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64 files changed, 5985 insertions, 0 deletions

diff --git a/frontend-old/node_modules/@firebase/app-check/dist/app-check-public.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/app-check-public.d.ts
new file mode 100644
index 0000000..f323943
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/app-check-public.d.ts
@@ -0,0 +1,248 @@
+/**
+ * The Firebase App Check Web SDK.
+ *
+ * @remarks
+ * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or
+ * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use
+ * `CustomProvider` and write your own attestation method.
+ *
+ * @packageDocumentation
+ */
+
+import { FirebaseApp } from '@firebase/app';
+import { PartialObserver } from '@firebase/util';
+import { Unsubscribe } from '@firebase/util';
+
+/**
+ * The Firebase App Check service interface.
+ *
+ * @public
+ */
+export declare interface AppCheck {
+    /**
+     * The {@link @firebase/app#FirebaseApp} this `AppCheck` instance is associated with.
+     */
+    app: FirebaseApp;
+}
+
+/* Excluded from this release type: _AppCheckComponentName */
+
+/* Excluded from this release type: _AppCheckInternalComponentName */
+
+/**
+ * Options for App Check initialization.
+ * @public
+ */
+export declare interface AppCheckOptions {
+    /**
+     * A reCAPTCHA V3 provider, reCAPTCHA Enterprise provider, or custom provider.
+     */
+    provider: CustomProvider | ReCaptchaV3Provider | ReCaptchaEnterpriseProvider;
+    /**
+     * If set to true, enables automatic background refresh of App Check token.
+     */
+    isTokenAutoRefreshEnabled?: boolean;
+}
+
+declare interface AppCheckProvider {
+    /* Excluded from this release type: getToken */
+    /* Excluded from this release type: initialize */
+}
+
+/**
+ * The token returned from an App Check provider.
+ * @public
+ */
+export declare interface AppCheckToken {
+    readonly token: string;
+    /**
+     * The local timestamp after which the token will expire.
+     */
+    readonly expireTimeMillis: number;
+}
+
+declare interface AppCheckTokenInternal extends AppCheckToken {
+    issuedAtTimeMillis: number;
+}
+
+/**
+ * A listener that is called whenever the App Check token changes.
+ * @public
+ */
+export declare type AppCheckTokenListener = (token: AppCheckTokenResult) => void;
+
+/**
+ * Result returned by `getToken()`.
+ * @public
+ */
+export declare interface AppCheckTokenResult {
+    /**
+     * The token string in JWT format.
+     */
+    readonly token: string;
+}
+
+/**
+ * Custom provider class.
+ * @public
+ */
+export declare class CustomProvider implements AppCheckProvider {
+    private _customProviderOptions;
+    private _app?;
+    constructor(_customProviderOptions: CustomProviderOptions);
+    /* Excluded from this release type: getToken */
+    /* Excluded from this release type: initialize */
+    /* Excluded from this release type: isEqual */
+}
+
+/**
+ * Options when creating a {@link CustomProvider}.
+ * @public
+ */
+export declare interface CustomProviderOptions {
+    /**
+     * Function to get an App Check token through a custom provider
+     * service.
+     */
+    getToken: () => Promise<AppCheckToken>;
+}
+
+/**
+ * Requests a Firebase App Check token. This method should be used
+ * only if you need to authorize requests to a non-Firebase backend.
+ *
+ * Returns limited-use tokens that are intended for use with your
+ * non-Firebase backend endpoints that are protected with
+ * <a href="https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection">
+ * Replay Protection</a>. This method
+ * does not affect the token generation behavior of the
+ * #getAppCheckToken() method.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @returns The limited use token.
+ * @public
+ */
+export declare function getLimitedUseToken(appCheckInstance: AppCheck): Promise<AppCheckTokenResult>;
+
+/**
+ * Get the current App Check token. If `forceRefresh` is false, this function first
+ * checks for a valid token in memory, then local persistence (IndexedDB).
+ * If not found, or if `forceRefresh` is true, it makes a request to the
+ * App Check endpoint for a fresh token. That request attaches
+ * to the most recent in-flight request if one is present.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param forceRefresh - If true, will always try to fetch a fresh token.
+ * If false, will use a cached token if found in storage.
+ * @public
+ */
+export declare function getToken(appCheckInstance: AppCheck, forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+
+/**
+ * Activate App Check for the given app. Can be called only once per app.
+ * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for
+ * @param options - App Check initialization options
+ * @public
+ */
+export declare function initializeAppCheck(app: FirebaseApp | undefined, options: AppCheckOptions): AppCheck;
+
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param observer - An object with `next`, `error`, and `complete`
+ * properties. `next` is called with an
+ * {@link AppCheckTokenResult}
+ * whenever the token changes. `error` is optional and is called if an
+ * error is thrown by the listener (the `next` function). `complete`
+ * is unused, as the token stream is unending.
+ *
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, observer: PartialObserver<AppCheckTokenResult>): Unsubscribe;
+
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param onNext - When the token changes, this function is called with an
+ * {@link AppCheckTokenResult}.
+ * @param onError - Optional. Called if there is an error thrown by the
+ * listener (the `onNext` function).
+ * @param onCompletion - Currently unused, as the token stream is unending.
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, onNext: (tokenResult: AppCheckTokenResult) => void, onError?: (error: Error) => void, onCompletion?: () => void): Unsubscribe;
+export { PartialObserver }
+
+/**
+ * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaEnterpriseProvider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaEnterpriseProvider instance.
+     * @param siteKey - reCAPTCHA Enterprise score-based site key.
+     */
+    constructor(_siteKey: string);
+    /* Excluded from this release type: getToken */
+    /* Excluded from this release type: initialize */
+    /* Excluded from this release type: isEqual */
+}
+
+/**
+ * App Check provider that can obtain a reCAPTCHA V3 token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaV3Provider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaV3Provider instance.
+     * @param siteKey - ReCAPTCHA V3 siteKey.
+     */
+    constructor(_siteKey: string);
+    /* Excluded from this release type: getToken */
+    /* Excluded from this release type: initialize */
+    /* Excluded from this release type: isEqual */
+}
+
+/**
+ * Set whether App Check will automatically refresh tokens as needed.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. This overrides any value set
+ * during `initializeAppCheck()`.
+ * @public
+ */
+export declare function setTokenAutoRefreshEnabled(appCheckInstance: AppCheck, isTokenAutoRefreshEnabled: boolean): void;
+export { Unsubscribe }
+
+export { }
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/app-check.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/app-check.d.ts
new file mode 100644
index 0000000..36fc7e2
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/app-check.d.ts
@@ -0,0 +1,290 @@
+/**
+ * The Firebase App Check Web SDK.
+ *
+ * @remarks
+ * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or
+ * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use
+ * `CustomProvider` and write your own attestation method.
+ *
+ * @packageDocumentation
+ */
+
+import { FirebaseApp } from '@firebase/app';
+import { PartialObserver } from '@firebase/util';
+import { Unsubscribe } from '@firebase/util';
+
+/**
+ * The Firebase App Check service interface.
+ *
+ * @public
+ */
+export declare interface AppCheck {
+    /**
+     * The {@link @firebase/app#FirebaseApp} this `AppCheck` instance is associated with.
+     */
+    app: FirebaseApp;
+}
+
+/**
+ * @internal
+ */
+export declare type _AppCheckComponentName = 'app-check';
+
+/**
+ * @internal
+ */
+export declare type _AppCheckInternalComponentName = 'app-check-internal';
+
+/**
+ * Options for App Check initialization.
+ * @public
+ */
+export declare interface AppCheckOptions {
+    /**
+     * A reCAPTCHA V3 provider, reCAPTCHA Enterprise provider, or custom provider.
+     */
+    provider: CustomProvider | ReCaptchaV3Provider | ReCaptchaEnterpriseProvider;
+    /**
+     * If set to true, enables automatic background refresh of App Check token.
+     */
+    isTokenAutoRefreshEnabled?: boolean;
+}
+
+declare interface AppCheckProvider {
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken: () => Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+}
+
+/**
+ * The token returned from an App Check provider.
+ * @public
+ */
+export declare interface AppCheckToken {
+    readonly token: string;
+    /**
+     * The local timestamp after which the token will expire.
+     */
+    readonly expireTimeMillis: number;
+}
+
+declare interface AppCheckTokenInternal extends AppCheckToken {
+    issuedAtTimeMillis: number;
+}
+
+/**
+ * A listener that is called whenever the App Check token changes.
+ * @public
+ */
+export declare type AppCheckTokenListener = (token: AppCheckTokenResult) => void;
+
+/**
+ * Result returned by `getToken()`.
+ * @public
+ */
+export declare interface AppCheckTokenResult {
+    /**
+     * The token string in JWT format.
+     */
+    readonly token: string;
+}
+
+/**
+ * Custom provider class.
+ * @public
+ */
+export declare class CustomProvider implements AppCheckProvider {
+    private _customProviderOptions;
+    private _app?;
+    constructor(_customProviderOptions: CustomProviderOptions);
+    /**
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+
+/**
+ * Options when creating a {@link CustomProvider}.
+ * @public
+ */
+export declare interface CustomProviderOptions {
+    /**
+     * Function to get an App Check token through a custom provider
+     * service.
+     */
+    getToken: () => Promise<AppCheckToken>;
+}
+
+/**
+ * Requests a Firebase App Check token. This method should be used
+ * only if you need to authorize requests to a non-Firebase backend.
+ *
+ * Returns limited-use tokens that are intended for use with your
+ * non-Firebase backend endpoints that are protected with
+ * <a href="https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection">
+ * Replay Protection</a>. This method
+ * does not affect the token generation behavior of the
+ * #getAppCheckToken() method.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @returns The limited use token.
+ * @public
+ */
+export declare function getLimitedUseToken(appCheckInstance: AppCheck): Promise<AppCheckTokenResult>;
+
+/**
+ * Get the current App Check token. If `forceRefresh` is false, this function first
+ * checks for a valid token in memory, then local persistence (IndexedDB).
+ * If not found, or if `forceRefresh` is true, it makes a request to the
+ * App Check endpoint for a fresh token. That request attaches
+ * to the most recent in-flight request if one is present.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param forceRefresh - If true, will always try to fetch a fresh token.
+ * If false, will use a cached token if found in storage.
+ * @public
+ */
+export declare function getToken(appCheckInstance: AppCheck, forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+
+/**
+ * Activate App Check for the given app. Can be called only once per app.
+ * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for
+ * @param options - App Check initialization options
+ * @public
+ */
+export declare function initializeAppCheck(app: FirebaseApp | undefined, options: AppCheckOptions): AppCheck;
+
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param observer - An object with `next`, `error`, and `complete`
+ * properties. `next` is called with an
+ * {@link AppCheckTokenResult}
+ * whenever the token changes. `error` is optional and is called if an
+ * error is thrown by the listener (the `next` function). `complete`
+ * is unused, as the token stream is unending.
+ *
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, observer: PartialObserver<AppCheckTokenResult>): Unsubscribe;
+
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param onNext - When the token changes, this function is called with an
+ * {@link AppCheckTokenResult}.
+ * @param onError - Optional. Called if there is an error thrown by the
+ * listener (the `onNext` function).
+ * @param onCompletion - Currently unused, as the token stream is unending.
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, onNext: (tokenResult: AppCheckTokenResult) => void, onError?: (error: Error) => void, onCompletion?: () => void): Unsubscribe;
+export { PartialObserver }
+
+/**
+ * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaEnterpriseProvider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaEnterpriseProvider instance.
+     * @param siteKey - reCAPTCHA Enterprise score-based site key.
+     */
+    constructor(_siteKey: string);
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+
+/**
+ * App Check provider that can obtain a reCAPTCHA V3 token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaV3Provider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaV3Provider instance.
+     * @param siteKey - ReCAPTCHA V3 siteKey.
+     */
+    constructor(_siteKey: string);
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+
+/**
+ * Set whether App Check will automatically refresh tokens as needed.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. This overrides any value set
+ * during `initializeAppCheck()`.
+ * @public
+ */
+export declare function setTokenAutoRefreshEnabled(appCheckInstance: AppCheck, isTokenAutoRefreshEnabled: boolean): void;
+export { Unsubscribe }
+
+export { }
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/index.esm.js b/frontend-old/node_modules/@firebase/app-check/dist/esm/index.esm.js
new file mode 100644
index 0000000..d06b015
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/index.esm.js
@@ -0,0 +1,1693 @@
+import { _getProvider, getApp, _registerComponent, registerVersion } from '@firebase/app';
+import { Component } from '@firebase/component';
+import { Deferred, ErrorFactory, isIndexedDBAvailable, getGlobal, base64, issuedAtTime, calculateBackoffMillis, getModularInstance } from '@firebase/util';
+import { Logger } from '@firebase/logger';
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const APP_CHECK_STATES = new Map();
+const DEFAULT_STATE = {
+    activated: false,
+    tokenObservers: []
+};
+const DEBUG_STATE = {
+    initialized: false,
+    enabled: false
+};
+/**
+ * Gets a reference to the state object.
+ */
+function getStateReference(app) {
+    return APP_CHECK_STATES.get(app) || { ...DEFAULT_STATE };
+}
+/**
+ * Set once on initialization. The map should hold the same reference to the
+ * same object until this entry is deleted.
+ */
+function setInitialState(app, state) {
+    APP_CHECK_STATES.set(app, state);
+    return APP_CHECK_STATES.get(app);
+}
+function getDebugState() {
+    return DEBUG_STATE;
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const BASE_ENDPOINT = 'https://content-firebaseappcheck.googleapis.com/v1';
+const EXCHANGE_RECAPTCHA_TOKEN_METHOD = 'exchangeRecaptchaV3Token';
+const EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD = 'exchangeRecaptchaEnterpriseToken';
+const EXCHANGE_DEBUG_TOKEN_METHOD = 'exchangeDebugToken';
+const TOKEN_REFRESH_TIME = {
+    /**
+     * The offset time before token natural expiration to run the refresh.
+     * This is currently 5 minutes.
+     */
+    OFFSET_DURATION: 5 * 60 * 1000,
+    /**
+     * This is the first retrial wait after an error. This is currently
+     * 30 seconds.
+     */
+    RETRIAL_MIN_WAIT: 30 * 1000,
+    /**
+     * This is the maximum retrial wait, currently 16 minutes.
+     */
+    RETRIAL_MAX_WAIT: 16 * 60 * 1000
+};
+/**
+ * One day in millis, for certain error code backoffs.
+ */
+const ONE_DAY = 24 * 60 * 60 * 1000;
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Port from auth proactiverefresh.js
+ *
+ */
+// TODO: move it to @firebase/util?
+// TODO: allow to config whether refresh should happen in the background
+class Refresher {
+    constructor(operation, retryPolicy, getWaitDuration, lowerBound, upperBound) {
+        this.operation = operation;
+        this.retryPolicy = retryPolicy;
+        this.getWaitDuration = getWaitDuration;
+        this.lowerBound = lowerBound;
+        this.upperBound = upperBound;
+        this.pending = null;
+        this.nextErrorWaitInterval = lowerBound;
+        if (lowerBound > upperBound) {
+            throw new Error('Proactive refresh lower bound greater than upper bound!');
+        }
+    }
+    start() {
+        this.nextErrorWaitInterval = this.lowerBound;
+        this.process(true).catch(() => {
+            /* we don't care about the result */
+        });
+    }
+    stop() {
+        if (this.pending) {
+            this.pending.reject('cancelled');
+            this.pending = null;
+        }
+    }
+    isRunning() {
+        return !!this.pending;
+    }
+    async process(hasSucceeded) {
+        this.stop();
+        try {
+            this.pending = new Deferred();
+            this.pending.promise.catch(_e => {
+                /* ignore */
+            });
+            await sleep(this.getNextRun(hasSucceeded));
+            // Why do we resolve a promise, then immediate wait for it?
+            // We do it to make the promise chain cancellable.
+            // We can call stop() which rejects the promise before the following line execute, which makes
+            // the code jump to the catch block.
+            // TODO: unit test this
+            this.pending.resolve();
+            await this.pending.promise;
+            this.pending = new Deferred();
+            this.pending.promise.catch(_e => {
+                /* ignore */
+            });
+            await this.operation();
+            this.pending.resolve();
+            await this.pending.promise;
+            this.process(true).catch(() => {
+                /* we don't care about the result */
+            });
+        }
+        catch (error) {
+            if (this.retryPolicy(error)) {
+                this.process(false).catch(() => {
+                    /* we don't care about the result */
+                });
+            }
+            else {
+                this.stop();
+            }
+        }
+    }
+    getNextRun(hasSucceeded) {
+        if (hasSucceeded) {
+            // If last operation succeeded, reset next error wait interval and return
+            // the default wait duration.
+            this.nextErrorWaitInterval = this.lowerBound;
+            // Return typical wait duration interval after a successful operation.
+            return this.getWaitDuration();
+        }
+        else {
+            // Get next error wait interval.
+            const currentErrorWaitInterval = this.nextErrorWaitInterval;
+            // Double interval for next consecutive error.
+            this.nextErrorWaitInterval *= 2;
+            // Make sure next wait interval does not exceed the maximum upper bound.
+            if (this.nextErrorWaitInterval > this.upperBound) {
+                this.nextErrorWaitInterval = this.upperBound;
+            }
+            return currentErrorWaitInterval;
+        }
+    }
+}
+function sleep(ms) {
+    return new Promise(resolve => {
+        setTimeout(resolve, ms);
+    });
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const ERRORS = {
+    ["already-initialized" /* AppCheckError.ALREADY_INITIALIZED */]: 'You have already called initializeAppCheck() for FirebaseApp {$appName} with ' +
+        'different options. To avoid this error, call initializeAppCheck() with the ' +
+        'same options as when it was originally called. This will return the ' +
+        'already initialized instance.',
+    ["use-before-activation" /* AppCheckError.USE_BEFORE_ACTIVATION */]: 'App Check is being used before initializeAppCheck() is called for FirebaseApp {$appName}. ' +
+        'Call initializeAppCheck() before instantiating other Firebase services.',
+    ["fetch-network-error" /* AppCheckError.FETCH_NETWORK_ERROR */]: 'Fetch failed to connect to a network. Check Internet connection. ' +
+        'Original error: {$originalErrorMessage}.',
+    ["fetch-parse-error" /* AppCheckError.FETCH_PARSE_ERROR */]: 'Fetch client could not parse response.' +
+        ' Original error: {$originalErrorMessage}.',
+    ["fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */]: 'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',
+    ["storage-open" /* AppCheckError.STORAGE_OPEN */]: 'Error thrown when opening storage. Original error: {$originalErrorMessage}.',
+    ["storage-get" /* AppCheckError.STORAGE_GET */]: 'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',
+    ["storage-set" /* AppCheckError.STORAGE_WRITE */]: 'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',
+    ["recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */]: 'ReCAPTCHA error.',
+    ["initial-throttle" /* AppCheckError.INITIAL_THROTTLE */]: `{$httpStatus} error. Attempts allowed again after {$time}`,
+    ["throttled" /* AppCheckError.THROTTLED */]: `Requests throttled due to previous {$httpStatus} error. Attempts allowed again after {$time}`
+};
+const ERROR_FACTORY = new ErrorFactory('appCheck', 'AppCheck', ERRORS);
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+function getRecaptcha(isEnterprise = false) {
+    if (isEnterprise) {
+        return self.grecaptcha?.enterprise;
+    }
+    return self.grecaptcha;
+}
+function ensureActivated(app) {
+    if (!getStateReference(app).activated) {
+        throw ERROR_FACTORY.create("use-before-activation" /* AppCheckError.USE_BEFORE_ACTIVATION */, {
+            appName: app.name
+        });
+    }
+}
+function getDurationString(durationInMillis) {
+    const totalSeconds = Math.round(durationInMillis / 1000);
+    const days = Math.floor(totalSeconds / (3600 * 24));
+    const hours = Math.floor((totalSeconds - days * 3600 * 24) / 3600);
+    const minutes = Math.floor((totalSeconds - days * 3600 * 24 - hours * 3600) / 60);
+    const seconds = totalSeconds - days * 3600 * 24 - hours * 3600 - minutes * 60;
+    let result = '';
+    if (days) {
+        result += pad(days) + 'd:';
+    }
+    if (hours) {
+        result += pad(hours) + 'h:';
+    }
+    result += pad(minutes) + 'm:' + pad(seconds) + 's';
+    return result;
+}
+function pad(value) {
+    if (value === 0) {
+        return '00';
+    }
+    return value >= 10 ? value.toString() : '0' + value;
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+async function exchangeToken({ url, body }, heartbeatServiceProvider) {
+    const headers = {
+        'Content-Type': 'application/json'
+    };
+    // If heartbeat service exists, add heartbeat header string to the header.
+    const heartbeatService = heartbeatServiceProvider.getImmediate({
+        optional: true
+    });
+    if (heartbeatService) {
+        const heartbeatsHeader = await heartbeatService.getHeartbeatsHeader();
+        if (heartbeatsHeader) {
+            headers['X-Firebase-Client'] = heartbeatsHeader;
+        }
+    }
+    const options = {
+        method: 'POST',
+        body: JSON.stringify(body),
+        headers
+    };
+    let response;
+    try {
+        response = await fetch(url, options);
+    }
+    catch (originalError) {
+        throw ERROR_FACTORY.create("fetch-network-error" /* AppCheckError.FETCH_NETWORK_ERROR */, {
+            originalErrorMessage: originalError?.message
+        });
+    }
+    if (response.status !== 200) {
+        throw ERROR_FACTORY.create("fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */, {
+            httpStatus: response.status
+        });
+    }
+    let responseBody;
+    try {
+        // JSON parsing throws SyntaxError if the response body isn't a JSON string.
+        responseBody = await response.json();
+    }
+    catch (originalError) {
+        throw ERROR_FACTORY.create("fetch-parse-error" /* AppCheckError.FETCH_PARSE_ERROR */, {
+            originalErrorMessage: originalError?.message
+        });
+    }
+    // Protobuf duration format.
+    // https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/Duration
+    const match = responseBody.ttl.match(/^([\d.]+)(s)$/);
+    if (!match || !match[2] || isNaN(Number(match[1]))) {
+        throw ERROR_FACTORY.create("fetch-parse-error" /* AppCheckError.FETCH_PARSE_ERROR */, {
+            originalErrorMessage: `ttl field (timeToLive) is not in standard Protobuf Duration ` +
+                `format: ${responseBody.ttl}`
+        });
+    }
+    const timeToLiveAsNumber = Number(match[1]) * 1000;
+    const now = Date.now();
+    return {
+        token: responseBody.token,
+        expireTimeMillis: now + timeToLiveAsNumber,
+        issuedAtTimeMillis: now
+    };
+}
+function getExchangeRecaptchaV3TokenRequest(app, reCAPTCHAToken) {
+    const { projectId, appId, apiKey } = app.options;
+    return {
+        url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_TOKEN_METHOD}?key=${apiKey}`,
+        body: {
+            'recaptcha_v3_token': reCAPTCHAToken
+        }
+    };
+}
+function getExchangeRecaptchaEnterpriseTokenRequest(app, reCAPTCHAToken) {
+    const { projectId, appId, apiKey } = app.options;
+    return {
+        url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD}?key=${apiKey}`,
+        body: {
+            'recaptcha_enterprise_token': reCAPTCHAToken
+        }
+    };
+}
+function getExchangeDebugTokenRequest(app, debugToken) {
+    const { projectId, appId, apiKey } = app.options;
+    return {
+        url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_DEBUG_TOKEN_METHOD}?key=${apiKey}`,
+        body: {
+            // eslint-disable-next-line
+            debug_token: debugToken
+        }
+    };
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const DB_NAME = 'firebase-app-check-database';
+const DB_VERSION = 1;
+const STORE_NAME = 'firebase-app-check-store';
+const DEBUG_TOKEN_KEY = 'debug-token';
+let dbPromise = null;
+function getDBPromise() {
+    if (dbPromise) {
+        return dbPromise;
+    }
+    dbPromise = new Promise((resolve, reject) => {
+        try {
+            const request = indexedDB.open(DB_NAME, DB_VERSION);
+            request.onsuccess = event => {
+                resolve(event.target.result);
+            };
+            request.onerror = event => {
+                reject(ERROR_FACTORY.create("storage-open" /* AppCheckError.STORAGE_OPEN */, {
+                    originalErrorMessage: event.target.error?.message
+                }));
+            };
+            request.onupgradeneeded = event => {
+                const db = event.target.result;
+                // We don't use 'break' in this switch statement, the fall-through
+                // behavior is what we want, because if there are multiple versions between
+                // the old version and the current version, we want ALL the migrations
+                // that correspond to those versions to run, not only the last one.
+                // eslint-disable-next-line default-case
+                switch (event.oldVersion) {
+                    case 0:
+                        db.createObjectStore(STORE_NAME, {
+                            keyPath: 'compositeKey'
+                        });
+                }
+            };
+        }
+        catch (e) {
+            reject(ERROR_FACTORY.create("storage-open" /* AppCheckError.STORAGE_OPEN */, {
+                originalErrorMessage: e?.message
+            }));
+        }
+    });
+    return dbPromise;
+}
+function readTokenFromIndexedDB(app) {
+    return read(computeKey(app));
+}
+function writeTokenToIndexedDB(app, token) {
+    return write(computeKey(app), token);
+}
+function writeDebugTokenToIndexedDB(token) {
+    return write(DEBUG_TOKEN_KEY, token);
+}
+function readDebugTokenFromIndexedDB() {
+    return read(DEBUG_TOKEN_KEY);
+}
+async function write(key, value) {
+    const db = await getDBPromise();
+    const transaction = db.transaction(STORE_NAME, 'readwrite');
+    const store = transaction.objectStore(STORE_NAME);
+    const request = store.put({
+        compositeKey: key,
+        value
+    });
+    return new Promise((resolve, reject) => {
+        request.onsuccess = _event => {
+            resolve();
+        };
+        transaction.onerror = event => {
+            reject(ERROR_FACTORY.create("storage-set" /* AppCheckError.STORAGE_WRITE */, {
+                originalErrorMessage: event.target.error?.message
+            }));
+        };
+    });
+}
+async function read(key) {
+    const db = await getDBPromise();
+    const transaction = db.transaction(STORE_NAME, 'readonly');
+    const store = transaction.objectStore(STORE_NAME);
+    const request = store.get(key);
+    return new Promise((resolve, reject) => {
+        request.onsuccess = event => {
+            const result = event.target.result;
+            if (result) {
+                resolve(result.value);
+            }
+            else {
+                resolve(undefined);
+            }
+        };
+        transaction.onerror = event => {
+            reject(ERROR_FACTORY.create("storage-get" /* AppCheckError.STORAGE_GET */, {
+                originalErrorMessage: event.target.error?.message
+            }));
+        };
+    });
+}
+function computeKey(app) {
+    return `${app.options.appId}-${app.name}`;
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const logger = new Logger('@firebase/app-check');
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Always resolves. In case of an error reading from indexeddb, resolve with undefined
+ */
+async function readTokenFromStorage(app) {
+    if (isIndexedDBAvailable()) {
+        let token = undefined;
+        try {
+            token = await readTokenFromIndexedDB(app);
+        }
+        catch (e) {
+            // swallow the error and return undefined
+            logger.warn(`Failed to read token from IndexedDB. Error: ${e}`);
+        }
+        return token;
+    }
+    return undefined;
+}
+/**
+ * Always resolves. In case of an error writing to indexeddb, print a warning and resolve the promise
+ */
+function writeTokenToStorage(app, token) {
+    if (isIndexedDBAvailable()) {
+        return writeTokenToIndexedDB(app, token).catch(e => {
+            // swallow the error and resolve the promise
+            logger.warn(`Failed to write token to IndexedDB. Error: ${e}`);
+        });
+    }
+    return Promise.resolve();
+}
+async function readOrCreateDebugTokenFromStorage() {
+    /**
+     * Theoretically race condition can happen if we read, then write in 2 separate transactions.
+     * But it won't happen here, because this function will be called exactly once.
+     */
+    let existingDebugToken = undefined;
+    try {
+        existingDebugToken = await readDebugTokenFromIndexedDB();
+    }
+    catch (_e) {
+        // failed to read from indexeddb. We assume there is no existing debug token, and generate a new one.
+    }
+    if (!existingDebugToken) {
+        // create a new debug token
+        // This function is only available in secure contexts. See https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts
+        const newToken = crypto.randomUUID();
+        // We don't need to block on writing to indexeddb
+        // In case persistence failed, a new debug token will be generated every time the page is refreshed.
+        // It renders the debug token useless because you have to manually register(whitelist) the new token in the firebase console again and again.
+        // If you see this error trying to use debug token, it probably means you are using a browser that doesn't support indexeddb.
+        // You should switch to a different browser that supports indexeddb
+        writeDebugTokenToIndexedDB(newToken).catch(e => logger.warn(`Failed to persist debug token to IndexedDB. Error: ${e}`));
+        return newToken;
+    }
+    else {
+        return existingDebugToken;
+    }
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+function isDebugMode() {
+    const debugState = getDebugState();
+    return debugState.enabled;
+}
+async function getDebugToken() {
+    const state = getDebugState();
+    if (state.enabled && state.token) {
+        return state.token.promise;
+    }
+    else {
+        // should not happen!
+        throw Error(`
+            Can't get debug token in production mode.
+        `);
+    }
+}
+function initializeDebugMode() {
+    const globals = getGlobal();
+    const debugState = getDebugState();
+    // Set to true if this function has been called, whether or not
+    // it enabled debug mode.
+    debugState.initialized = true;
+    if (typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== 'string' &&
+        globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== true) {
+        return;
+    }
+    debugState.enabled = true;
+    const deferredToken = new Deferred();
+    debugState.token = deferredToken;
+    if (typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN === 'string') {
+        deferredToken.resolve(globals.FIREBASE_APPCHECK_DEBUG_TOKEN);
+    }
+    else {
+        deferredToken.resolve(readOrCreateDebugTokenFromStorage());
+    }
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Initial hardcoded value agreed upon across platforms for initial launch.
+// Format left open for possible dynamic error values and other fields in the future.
+const defaultTokenErrorData = { error: 'UNKNOWN_ERROR' };
+/**
+ * Stringify and base64 encode token error data.
+ *
+ * @param tokenError Error data, currently hardcoded.
+ */
+function formatDummyToken(tokenErrorData) {
+    return base64.encodeString(JSON.stringify(tokenErrorData), 
+    /* webSafe= */ false);
+}
+/**
+ * This function always resolves.
+ * The result will contain an error field if there is any error.
+ * In case there is an error, the token field in the result will be populated with a dummy value
+ */
+async function getToken$2(appCheck, forceRefresh = false, shouldLogErrors = false) {
+    const app = appCheck.app;
+    ensureActivated(app);
+    const state = getStateReference(app);
+    /**
+     * First check if there is a token in memory from a previous `getToken()` call.
+     */
+    let token = state.token;
+    let error = undefined;
+    /**
+     * If an invalid token was found in memory, clear token from
+     * memory and unset the local variable `token`.
+     */
+    if (token && !isValid(token)) {
+        state.token = undefined;
+        token = undefined;
+    }
+    /**
+     * If there is no valid token in memory, try to load token from indexedDB.
+     */
+    if (!token) {
+        // cachedTokenPromise contains the token found in IndexedDB or undefined if not found.
+        const cachedToken = await state.cachedTokenPromise;
+        if (cachedToken) {
+            if (isValid(cachedToken)) {
+                token = cachedToken;
+            }
+            else {
+                // If there was an invalid token in the indexedDB cache, clear it.
+                await writeTokenToStorage(app, undefined);
+            }
+        }
+    }
+    // Return the cached token (from either memory or indexedDB) if it's valid
+    if (!forceRefresh && token && isValid(token)) {
+        return {
+            token: token.token
+        };
+    }
+    // Only set to true if this `getToken()` call is making the actual
+    // REST call to the exchange endpoint, versus waiting for an already
+    // in-flight call (see debug and regular exchange endpoint paths below)
+    let shouldCallListeners = false;
+    /**
+     * DEBUG MODE
+     * If debug mode is set, and there is no cached token, fetch a new App
+     * Check token using the debug token, and return it directly.
+     */
+    if (isDebugMode()) {
+        try {
+            // Avoid making another call to the exchange endpoint if one is in flight.
+            if (!state.exchangeTokenPromise) {
+                state.exchangeTokenPromise = exchangeToken(getExchangeDebugTokenRequest(app, await getDebugToken()), appCheck.heartbeatServiceProvider).finally(() => {
+                    // Clear promise when settled - either resolved or rejected.
+                    state.exchangeTokenPromise = undefined;
+                });
+                shouldCallListeners = true;
+            }
+            const tokenFromDebugExchange = await state.exchangeTokenPromise;
+            // Write debug token to indexedDB.
+            await writeTokenToStorage(app, tokenFromDebugExchange);
+            // Write debug token to state.
+            state.token = tokenFromDebugExchange;
+            return { token: tokenFromDebugExchange.token };
+        }
+        catch (e) {
+            if (e.code === `appCheck/${"throttled" /* AppCheckError.THROTTLED */}` ||
+                e.code ===
+                    `appCheck/${"initial-throttle" /* AppCheckError.INITIAL_THROTTLE */}`) {
+                // Warn if throttled, but do not treat it as an error.
+                logger.warn(e.message);
+            }
+            else if (shouldLogErrors) {
+                logger.error(e);
+            }
+            // Return dummy token and error
+            return makeDummyTokenResult(e);
+        }
+    }
+    /**
+     * There are no valid tokens in memory or indexedDB and we are not in
+     * debug mode.
+     * Request a new token from the exchange endpoint.
+     */
+    try {
+        // Avoid making another call to the exchange endpoint if one is in flight.
+        if (!state.exchangeTokenPromise) {
+            // state.provider is populated in initializeAppCheck()
+            // ensureActivated() at the top of this function checks that
+            // initializeAppCheck() has been called.
+            state.exchangeTokenPromise = state.provider.getToken().finally(() => {
+                // Clear promise when settled - either resolved or rejected.
+                state.exchangeTokenPromise = undefined;
+            });
+            shouldCallListeners = true;
+        }
+        token = await getStateReference(app).exchangeTokenPromise;
+    }
+    catch (e) {
+        if (e.code === `appCheck/${"throttled" /* AppCheckError.THROTTLED */}` ||
+            e.code === `appCheck/${"initial-throttle" /* AppCheckError.INITIAL_THROTTLE */}`) {
+            // Warn if throttled, but do not treat it as an error.
+            logger.warn(e.message);
+        }
+        else if (shouldLogErrors) {
+            logger.error(e);
+        }
+        // Always save error to be added to dummy token.
+        error = e;
+    }
+    let interopTokenResult;
+    if (!token) {
+        // If token is undefined, there must be an error.
+        // Return a dummy token along with the error.
+        interopTokenResult = makeDummyTokenResult(error);
+    }
+    else if (error) {
+        if (isValid(token)) {
+            // It's also possible a valid token exists, but there's also an error.
+            // (Such as if the token is almost expired, tries to refresh, and
+            // the exchange request fails.)
+            // We add a special error property here so that the refresher will
+            // count this as a failed attempt and use the backoff instead of
+            // retrying repeatedly with no delay, but any 3P listeners will not
+            // be hindered in getting the still-valid token.
+            interopTokenResult = {
+                token: token.token,
+                internalError: error
+            };
+        }
+        else {
+            // No invalid tokens should make it to this step. Memory and cached tokens
+            // are checked. Other tokens are from fresh exchanges. But just in case.
+            interopTokenResult = makeDummyTokenResult(error);
+        }
+    }
+    else {
+        interopTokenResult = {
+            token: token.token
+        };
+        // write the new token to the memory state as well as the persistent storage.
+        // Only do it if we got a valid new token
+        state.token = token;
+        await writeTokenToStorage(app, token);
+    }
+    if (shouldCallListeners) {
+        notifyTokenListeners(app, interopTokenResult);
+    }
+    return interopTokenResult;
+}
+/**
+ * Internal API for limited use tokens. Skips all FAC state and simply calls
+ * the underlying provider.
+ */
+async function getLimitedUseToken$1(appCheck) {
+    const app = appCheck.app;
+    ensureActivated(app);
+    const { provider } = getStateReference(app);
+    if (isDebugMode()) {
+        const debugToken = await getDebugToken();
+        const { token } = await exchangeToken(getExchangeDebugTokenRequest(app, debugToken), appCheck.heartbeatServiceProvider);
+        return { token };
+    }
+    else {
+        // provider is definitely valid since we ensure AppCheck was activated
+        const { token } = await provider.getToken();
+        return { token };
+    }
+}
+function addTokenListener(appCheck, type, listener, onError) {
+    const { app } = appCheck;
+    const state = getStateReference(app);
+    const tokenObserver = {
+        next: listener,
+        error: onError,
+        type
+    };
+    state.tokenObservers = [...state.tokenObservers, tokenObserver];
+    // Invoke the listener async immediately if there is a valid token
+    // in memory.
+    if (state.token && isValid(state.token)) {
+        const validToken = state.token;
+        Promise.resolve()
+            .then(() => {
+            listener({ token: validToken.token });
+            initTokenRefresher(appCheck);
+        })
+            .catch(() => {
+            /* we don't care about exceptions thrown in listeners */
+        });
+    }
+    /**
+     * Wait for any cached token promise to resolve before starting the token
+     * refresher. The refresher checks to see if there is an existing token
+     * in state and calls the exchange endpoint if not. We should first let the
+     * IndexedDB check have a chance to populate state if it can.
+     *
+     * Listener call isn't needed here because cachedTokenPromise will call any
+     * listeners that exist when it resolves.
+     */
+    // state.cachedTokenPromise is always populated in `activate()`.
+    void state.cachedTokenPromise.then(() => initTokenRefresher(appCheck));
+}
+function removeTokenListener(app, listener) {
+    const state = getStateReference(app);
+    const newObservers = state.tokenObservers.filter(tokenObserver => tokenObserver.next !== listener);
+    if (newObservers.length === 0 &&
+        state.tokenRefresher &&
+        state.tokenRefresher.isRunning()) {
+        state.tokenRefresher.stop();
+    }
+    state.tokenObservers = newObservers;
+}
+/**
+ * Logic to create and start refresher as needed.
+ */
+function initTokenRefresher(appCheck) {
+    const { app } = appCheck;
+    const state = getStateReference(app);
+    // Create the refresher but don't start it if `isTokenAutoRefreshEnabled`
+    // is not true.
+    let refresher = state.tokenRefresher;
+    if (!refresher) {
+        refresher = createTokenRefresher(appCheck);
+        state.tokenRefresher = refresher;
+    }
+    if (!refresher.isRunning() && state.isTokenAutoRefreshEnabled) {
+        refresher.start();
+    }
+}
+function createTokenRefresher(appCheck) {
+    const { app } = appCheck;
+    return new Refresher(
+    // Keep in mind when this fails for any reason other than the ones
+    // for which we should retry, it will effectively stop the proactive refresh.
+    async () => {
+        const state = getStateReference(app);
+        // If there is no token, we will try to load it from storage and use it
+        // If there is a token, we force refresh it because we know it's going to expire soon
+        let result;
+        if (!state.token) {
+            result = await getToken$2(appCheck);
+        }
+        else {
+            result = await getToken$2(appCheck, true);
+        }
+        /**
+         * getToken() always resolves. In case the result has an error field defined, it means
+         * the operation failed, and we should retry.
+         */
+        if (result.error) {
+            throw result.error;
+        }
+        /**
+         * A special `internalError` field reflects that there was an error
+         * getting a new token from the exchange endpoint, but there's still a
+         * previous token that's valid for now and this should be passed to 2P/3P
+         * requests for a token. But we want this callback (`this.operation` in
+         * `Refresher`) to throw in order to kick off the Refresher's retry
+         * backoff. (Setting `hasSucceeded` to false.)
+         */
+        if (result.internalError) {
+            throw result.internalError;
+        }
+    }, () => {
+        return true;
+    }, () => {
+        const state = getStateReference(app);
+        if (state.token) {
+            // issuedAtTime + (50% * total TTL) + 5 minutes
+            let nextRefreshTimeMillis = state.token.issuedAtTimeMillis +
+                (state.token.expireTimeMillis - state.token.issuedAtTimeMillis) *
+                    0.5 +
+                5 * 60 * 1000;
+            // Do not allow refresh time to be past (expireTime - 5 minutes)
+            const latestAllowableRefresh = state.token.expireTimeMillis - 5 * 60 * 1000;
+            nextRefreshTimeMillis = Math.min(nextRefreshTimeMillis, latestAllowableRefresh);
+            return Math.max(0, nextRefreshTimeMillis - Date.now());
+        }
+        else {
+            return 0;
+        }
+    }, TOKEN_REFRESH_TIME.RETRIAL_MIN_WAIT, TOKEN_REFRESH_TIME.RETRIAL_MAX_WAIT);
+}
+function notifyTokenListeners(app, token) {
+    const observers = getStateReference(app).tokenObservers;
+    for (const observer of observers) {
+        try {
+            if (observer.type === "EXTERNAL" /* ListenerType.EXTERNAL */ && token.error != null) {
+                // If this listener was added by a 3P call, send any token error to
+                // the supplied error handler. A 3P observer always has an error
+                // handler.
+                observer.error(token.error);
+            }
+            else {
+                // If the token has no error field, always return the token.
+                // If this is a 2P listener, return the token, whether or not it
+                // has an error field.
+                observer.next(token);
+            }
+        }
+        catch (e) {
+            // Errors in the listener function itself are always ignored.
+        }
+    }
+}
+function isValid(token) {
+    return token.expireTimeMillis - Date.now() > 0;
+}
+function makeDummyTokenResult(error) {
+    return {
+        token: formatDummyToken(defaultTokenErrorData),
+        error
+    };
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * AppCheck Service class.
+ */
+class AppCheckService {
+    constructor(app, heartbeatServiceProvider) {
+        this.app = app;
+        this.heartbeatServiceProvider = heartbeatServiceProvider;
+    }
+    _delete() {
+        const { tokenObservers } = getStateReference(this.app);
+        for (const tokenObserver of tokenObservers) {
+            removeTokenListener(this.app, tokenObserver.next);
+        }
+        return Promise.resolve();
+    }
+}
+function factory(app, heartbeatServiceProvider) {
+    return new AppCheckService(app, heartbeatServiceProvider);
+}
+function internalFactory(appCheck) {
+    return {
+        getToken: forceRefresh => getToken$2(appCheck, forceRefresh),
+        getLimitedUseToken: () => getLimitedUseToken$1(appCheck),
+        addTokenListener: listener => addTokenListener(appCheck, "INTERNAL" /* ListenerType.INTERNAL */, listener),
+        removeTokenListener: listener => removeTokenListener(appCheck.app, listener)
+    };
+}
+
+const name = "@firebase/app-check";
+const version = "0.11.0";
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const RECAPTCHA_URL = 'https://www.google.com/recaptcha/api.js';
+const RECAPTCHA_ENTERPRISE_URL = 'https://www.google.com/recaptcha/enterprise.js';
+function initializeV3(app, siteKey) {
+    const initialized = new Deferred();
+    const state = getStateReference(app);
+    state.reCAPTCHAState = { initialized };
+    const divId = makeDiv(app);
+    const grecaptcha = getRecaptcha(false);
+    if (!grecaptcha) {
+        loadReCAPTCHAV3Script(() => {
+            const grecaptcha = getRecaptcha(false);
+            if (!grecaptcha) {
+                // it shouldn't happen.
+                throw new Error('no recaptcha');
+            }
+            queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+        });
+    }
+    else {
+        queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+    }
+    return initialized.promise;
+}
+function initializeEnterprise(app, siteKey) {
+    const initialized = new Deferred();
+    const state = getStateReference(app);
+    state.reCAPTCHAState = { initialized };
+    const divId = makeDiv(app);
+    const grecaptcha = getRecaptcha(true);
+    if (!grecaptcha) {
+        loadReCAPTCHAEnterpriseScript(() => {
+            const grecaptcha = getRecaptcha(true);
+            if (!grecaptcha) {
+                // it shouldn't happen.
+                throw new Error('no recaptcha');
+            }
+            queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+        });
+    }
+    else {
+        queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+    }
+    return initialized.promise;
+}
+/**
+ * Add listener to render the widget and resolve the promise when
+ * the grecaptcha.ready() event fires.
+ */
+function queueWidgetRender(app, siteKey, grecaptcha, container, initialized) {
+    grecaptcha.ready(() => {
+        // Invisible widgets allow us to set a different siteKey for each widget,
+        // so we use them to support multiple apps
+        renderInvisibleWidget(app, siteKey, grecaptcha, container);
+        initialized.resolve(grecaptcha);
+    });
+}
+/**
+ * Add invisible div to page.
+ */
+function makeDiv(app) {
+    const divId = `fire_app_check_${app.name}`;
+    const invisibleDiv = document.createElement('div');
+    invisibleDiv.id = divId;
+    invisibleDiv.style.display = 'none';
+    document.body.appendChild(invisibleDiv);
+    return divId;
+}
+async function getToken$1(app) {
+    ensureActivated(app);
+    // ensureActivated() guarantees that reCAPTCHAState is set
+    const reCAPTCHAState = getStateReference(app).reCAPTCHAState;
+    const recaptcha = await reCAPTCHAState.initialized.promise;
+    return new Promise((resolve, _reject) => {
+        // Updated after initialization is complete.
+        const reCAPTCHAState = getStateReference(app).reCAPTCHAState;
+        recaptcha.ready(() => {
+            resolve(
+            // widgetId is guaranteed to be available if reCAPTCHAState.initialized.promise resolved.
+            recaptcha.execute(reCAPTCHAState.widgetId, {
+                action: 'fire_app_check'
+            }));
+        });
+    });
+}
+/**
+ *
+ * @param app
+ * @param container - Id of a HTML element.
+ */
+function renderInvisibleWidget(app, siteKey, grecaptcha, container) {
+    const widgetId = grecaptcha.render(container, {
+        sitekey: siteKey,
+        size: 'invisible',
+        // Success callback - set state
+        callback: () => {
+            getStateReference(app).reCAPTCHAState.succeeded = true;
+        },
+        // Failure callback - set state
+        'error-callback': () => {
+            getStateReference(app).reCAPTCHAState.succeeded = false;
+        }
+    });
+    const state = getStateReference(app);
+    state.reCAPTCHAState = {
+        ...state.reCAPTCHAState, // state.reCAPTCHAState is set in the initialize()
+        widgetId
+    };
+}
+function loadReCAPTCHAV3Script(onload) {
+    const script = document.createElement('script');
+    script.src = RECAPTCHA_URL;
+    script.onload = onload;
+    document.head.appendChild(script);
+}
+function loadReCAPTCHAEnterpriseScript(onload) {
+    const script = document.createElement('script');
+    script.src = RECAPTCHA_ENTERPRISE_URL;
+    script.onload = onload;
+    document.head.appendChild(script);
+}
+
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * App Check provider that can obtain a reCAPTCHA V3 token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+class ReCaptchaV3Provider {
+    /**
+     * Create a ReCaptchaV3Provider instance.
+     * @param siteKey - ReCAPTCHA V3 siteKey.
+     */
+    constructor(_siteKey) {
+        this._siteKey = _siteKey;
+        /**
+         * Throttle requests on certain error codes to prevent too many retries
+         * in a short time.
+         */
+        this._throttleData = null;
+    }
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    async getToken() {
+        throwIfThrottled(this._throttleData);
+        // Top-level `getToken()` has already checked that App Check is initialized
+        // and therefore this._app and this._heartbeatServiceProvider are available.
+        const attestedClaimsToken = await getToken$1(this._app).catch(_e => {
+            // reCaptcha.execute() throws null which is not very descriptive.
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        });
+        // Check if a failure state was set by the recaptcha "error-callback".
+        if (!getStateReference(this._app).reCAPTCHAState?.succeeded) {
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        }
+        let result;
+        try {
+            result = await exchangeToken(getExchangeRecaptchaV3TokenRequest(this._app, attestedClaimsToken), this._heartbeatServiceProvider);
+        }
+        catch (e) {
+            if (e.code?.includes("fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */)) {
+                this._throttleData = setBackoff(Number(e.customData?.httpStatus), this._throttleData);
+                throw ERROR_FACTORY.create("initial-throttle" /* AppCheckError.INITIAL_THROTTLE */, {
+                    time: getDurationString(this._throttleData.allowRequestsAfter - Date.now()),
+                    httpStatus: this._throttleData.httpStatus
+                });
+            }
+            else {
+                throw e;
+            }
+        }
+        // If successful, clear throttle data.
+        this._throttleData = null;
+        return result;
+    }
+    /**
+     * @internal
+     */
+    initialize(app) {
+        this._app = app;
+        this._heartbeatServiceProvider = _getProvider(app, 'heartbeat');
+        initializeV3(app, this._siteKey).catch(() => {
+            /* we don't care about the initialization result */
+        });
+    }
+    /**
+     * @internal
+     */
+    isEqual(otherProvider) {
+        if (otherProvider instanceof ReCaptchaV3Provider) {
+            return this._siteKey === otherProvider._siteKey;
+        }
+        else {
+            return false;
+        }
+    }
+}
+/**
+ * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+class ReCaptchaEnterpriseProvider {
+    /**
+     * Create a ReCaptchaEnterpriseProvider instance.
+     * @param siteKey - reCAPTCHA Enterprise score-based site key.
+     */
+    constructor(_siteKey) {
+        this._siteKey = _siteKey;
+        /**
+         * Throttle requests on certain error codes to prevent too many retries
+         * in a short time.
+         */
+        this._throttleData = null;
+    }
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    async getToken() {
+        throwIfThrottled(this._throttleData);
+        // Top-level `getToken()` has already checked that App Check is initialized
+        // and therefore this._app and this._heartbeatServiceProvider are available.
+        const attestedClaimsToken = await getToken$1(this._app).catch(_e => {
+            // reCaptcha.execute() throws null which is not very descriptive.
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        });
+        // Check if a failure state was set by the recaptcha "error-callback".
+        if (!getStateReference(this._app).reCAPTCHAState?.succeeded) {
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        }
+        let result;
+        try {
+            result = await exchangeToken(getExchangeRecaptchaEnterpriseTokenRequest(this._app, attestedClaimsToken), this._heartbeatServiceProvider);
+        }
+        catch (e) {
+            if (e.code?.includes("fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */)) {
+                this._throttleData = setBackoff(Number(e.customData?.httpStatus), this._throttleData);
+                throw ERROR_FACTORY.create("initial-throttle" /* AppCheckError.INITIAL_THROTTLE */, {
+                    time: getDurationString(this._throttleData.allowRequestsAfter - Date.now()),
+                    httpStatus: this._throttleData.httpStatus
+                });
+            }
+            else {
+                throw e;
+            }
+        }
+        // If successful, clear throttle data.
+        this._throttleData = null;
+        return result;
+    }
+    /**
+     * @internal
+     */
+    initialize(app) {
+        this._app = app;
+        this._heartbeatServiceProvider = _getProvider(app, 'heartbeat');
+        initializeEnterprise(app, this._siteKey).catch(() => {
+            /* we don't care about the initialization result */
+        });
+    }
+    /**
+     * @internal
+     */
+    isEqual(otherProvider) {
+        if (otherProvider instanceof ReCaptchaEnterpriseProvider) {
+            return this._siteKey === otherProvider._siteKey;
+        }
+        else {
+            return false;
+        }
+    }
+}
+/**
+ * Custom provider class.
+ * @public
+ */
+class CustomProvider {
+    constructor(_customProviderOptions) {
+        this._customProviderOptions = _customProviderOptions;
+    }
+    /**
+     * @internal
+     */
+    async getToken() {
+        // custom provider
+        const customToken = await this._customProviderOptions.getToken();
+        // Try to extract IAT from custom token, in case this token is not
+        // being newly issued. JWT timestamps are in seconds since epoch.
+        const issuedAtTimeSeconds = issuedAtTime(customToken.token);
+        // Very basic validation, use current timestamp as IAT if JWT
+        // has no `iat` field or value is out of bounds.
+        const issuedAtTimeMillis = issuedAtTimeSeconds !== null &&
+            issuedAtTimeSeconds < Date.now() &&
+            issuedAtTimeSeconds > 0
+            ? issuedAtTimeSeconds * 1000
+            : Date.now();
+        return { ...customToken, issuedAtTimeMillis };
+    }
+    /**
+     * @internal
+     */
+    initialize(app) {
+        this._app = app;
+    }
+    /**
+     * @internal
+     */
+    isEqual(otherProvider) {
+        if (otherProvider instanceof CustomProvider) {
+            return (this._customProviderOptions.getToken.toString() ===
+                otherProvider._customProviderOptions.getToken.toString());
+        }
+        else {
+            return false;
+        }
+    }
+}
+/**
+ * Set throttle data to block requests until after a certain time
+ * depending on the failed request's status code.
+ * @param httpStatus - Status code of failed request.
+ * @param throttleData - `ThrottleData` object containing previous throttle
+ * data state.
+ * @returns Data about current throttle state and expiration time.
+ */
+function setBackoff(httpStatus, throttleData) {
+    /**
+     * Block retries for 1 day for the following error codes:
+     *
+     * 404: Likely malformed URL.
+     *
+     * 403:
+     * - Attestation failed
+     * - Wrong API key
+     * - Project deleted
+     */
+    if (httpStatus === 404 || httpStatus === 403) {
+        return {
+            backoffCount: 1,
+            allowRequestsAfter: Date.now() + ONE_DAY,
+            httpStatus
+        };
+    }
+    else {
+        /**
+         * For all other error codes, the time when it is ok to retry again
+         * is based on exponential backoff.
+         */
+        const backoffCount = throttleData ? throttleData.backoffCount : 0;
+        const backoffMillis = calculateBackoffMillis(backoffCount, 1000, 2);
+        return {
+            backoffCount: backoffCount + 1,
+            allowRequestsAfter: Date.now() + backoffMillis,
+            httpStatus
+        };
+    }
+}
+function throwIfThrottled(throttleData) {
+    if (throttleData) {
+        if (Date.now() - throttleData.allowRequestsAfter <= 0) {
+            // If before, throw.
+            throw ERROR_FACTORY.create("throttled" /* AppCheckError.THROTTLED */, {
+                time: getDurationString(throttleData.allowRequestsAfter - Date.now()),
+                httpStatus: throttleData.httpStatus
+            });
+        }
+    }
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Activate App Check for the given app. Can be called only once per app.
+ * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for
+ * @param options - App Check initialization options
+ * @public
+ */
+function initializeAppCheck(app = getApp(), options) {
+    app = getModularInstance(app);
+    const provider = _getProvider(app, 'app-check');
+    // Ensure initializeDebugMode() is only called once.
+    if (!getDebugState().initialized) {
+        initializeDebugMode();
+    }
+    // Log a message containing the debug token when `initializeAppCheck()`
+    // is called in debug mode.
+    if (isDebugMode()) {
+        // Do not block initialization to get the token for the message.
+        void getDebugToken().then(token => 
+        // Not using logger because I don't think we ever want this accidentally hidden.
+        console.log(`App Check debug token: ${token}. You will need to add it to your app's App Check settings in the Firebase console for it to work.`));
+    }
+    if (provider.isInitialized()) {
+        const existingInstance = provider.getImmediate();
+        const initialOptions = provider.getOptions();
+        if (initialOptions.isTokenAutoRefreshEnabled ===
+            options.isTokenAutoRefreshEnabled &&
+            initialOptions.provider.isEqual(options.provider)) {
+            return existingInstance;
+        }
+        else {
+            throw ERROR_FACTORY.create("already-initialized" /* AppCheckError.ALREADY_INITIALIZED */, {
+                appName: app.name
+            });
+        }
+    }
+    const appCheck = provider.initialize({ options });
+    _activate(app, options.provider, options.isTokenAutoRefreshEnabled);
+    // If isTokenAutoRefreshEnabled is false, do not send any requests to the
+    // exchange endpoint without an explicit call from the user either directly
+    // or through another Firebase library (storage, functions, etc.)
+    if (getStateReference(app).isTokenAutoRefreshEnabled) {
+        // Adding a listener will start the refresher and fetch a token if needed.
+        // This gets a token ready and prevents a delay when an internal library
+        // requests the token.
+        // Listener function does not need to do anything, its base functionality
+        // of calling getToken() already fetches token and writes it to memory/storage.
+        addTokenListener(appCheck, "INTERNAL" /* ListenerType.INTERNAL */, () => { });
+    }
+    return appCheck;
+}
+/**
+ * Activate App Check
+ * @param app - Firebase app to activate App Check for.
+ * @param provider - reCAPTCHA v3 provider or
+ * custom token provider.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. If undefined, defaults to the
+ * value of `app.automaticDataCollectionEnabled`, which defaults to
+ * false and can be set in the app config.
+ */
+function _activate(app, provider, isTokenAutoRefreshEnabled = false) {
+    // Create an entry in the APP_CHECK_STATES map. Further changes should
+    // directly mutate this object.
+    const state = setInitialState(app, { ...DEFAULT_STATE });
+    state.activated = true;
+    state.provider = provider; // Read cached token from storage if it exists and store it in memory.
+    state.cachedTokenPromise = readTokenFromStorage(app).then(cachedToken => {
+        if (cachedToken && isValid(cachedToken)) {
+            state.token = cachedToken;
+            // notify all listeners with the cached token
+            notifyTokenListeners(app, { token: cachedToken.token });
+        }
+        return cachedToken;
+    });
+    // Global `automaticDataCollectionEnabled` (defaults to true) and
+    // `isTokenAutoRefreshEnabled` must both be true.
+    state.isTokenAutoRefreshEnabled =
+        isTokenAutoRefreshEnabled && app.automaticDataCollectionEnabled;
+    if (!app.automaticDataCollectionEnabled && isTokenAutoRefreshEnabled) {
+        logger.warn('`isTokenAutoRefreshEnabled` is true but ' +
+            '`automaticDataCollectionEnabled` was set to false during' +
+            ' `initializeApp()`. This blocks automatic token refresh.');
+    }
+    state.provider.initialize(app);
+}
+/**
+ * Set whether App Check will automatically refresh tokens as needed.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. This overrides any value set
+ * during `initializeAppCheck()`.
+ * @public
+ */
+function setTokenAutoRefreshEnabled(appCheckInstance, isTokenAutoRefreshEnabled) {
+    const app = appCheckInstance.app;
+    const state = getStateReference(app);
+    // This will exist if any product libraries have called
+    // `addTokenListener()`
+    if (state.tokenRefresher) {
+        if (isTokenAutoRefreshEnabled === true) {
+            state.tokenRefresher.start();
+        }
+        else {
+            state.tokenRefresher.stop();
+        }
+    }
+    state.isTokenAutoRefreshEnabled = isTokenAutoRefreshEnabled;
+}
+/**
+ * Get the current App Check token. If `forceRefresh` is false, this function first
+ * checks for a valid token in memory, then local persistence (IndexedDB).
+ * If not found, or if `forceRefresh` is true, it makes a request to the
+ * App Check endpoint for a fresh token. That request attaches
+ * to the most recent in-flight request if one is present.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param forceRefresh - If true, will always try to fetch a fresh token.
+ * If false, will use a cached token if found in storage.
+ * @public
+ */
+async function getToken(appCheckInstance, forceRefresh) {
+    const result = await getToken$2(appCheckInstance, forceRefresh);
+    if (result.error) {
+        throw result.error;
+    }
+    if (result.internalError) {
+        throw result.internalError;
+    }
+    return { token: result.token };
+}
+/**
+ * Requests a Firebase App Check token. This method should be used
+ * only if you need to authorize requests to a non-Firebase backend.
+ *
+ * Returns limited-use tokens that are intended for use with your
+ * non-Firebase backend endpoints that are protected with
+ * <a href="https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection">
+ * Replay Protection</a>. This method
+ * does not affect the token generation behavior of the
+ * #getAppCheckToken() method.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @returns The limited use token.
+ * @public
+ */
+function getLimitedUseToken(appCheckInstance) {
+    return getLimitedUseToken$1(appCheckInstance);
+}
+/**
+ * Wraps `addTokenListener`/`removeTokenListener` methods in an `Observer`
+ * pattern for public use.
+ */
+function onTokenChanged(appCheckInstance, onNextOrObserver, onError, 
+/**
+ * NOTE: Although an `onCompletion` callback can be provided, it will
+ * never be called because the token stream is never-ending.
+ * It is added only for API consistency with the observer pattern, which
+ * we follow in JS APIs.
+ */
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+onCompletion) {
+    let nextFn = () => { };
+    let errorFn = () => { };
+    if (onNextOrObserver.next != null) {
+        nextFn = onNextOrObserver.next.bind(onNextOrObserver);
+    }
+    else {
+        nextFn = onNextOrObserver;
+    }
+    if (onNextOrObserver.error != null) {
+        errorFn = onNextOrObserver.error.bind(onNextOrObserver);
+    }
+    else if (onError) {
+        errorFn = onError;
+    }
+    addTokenListener(appCheckInstance, "EXTERNAL" /* ListenerType.EXTERNAL */, nextFn, errorFn);
+    return () => removeTokenListener(appCheckInstance.app, nextFn);
+}
+
+/**
+ * The Firebase App Check Web SDK.
+ *
+ * @remarks
+ * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or
+ * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use
+ * `CustomProvider` and write your own attestation method.
+ *
+ * @packageDocumentation
+ */
+const APP_CHECK_NAME = 'app-check';
+const APP_CHECK_NAME_INTERNAL = 'app-check-internal';
+function registerAppCheck() {
+    // The public interface
+    _registerComponent(new Component(APP_CHECK_NAME, container => {
+        // getImmediate for FirebaseApp will always succeed
+        const app = container.getProvider('app').getImmediate();
+        const heartbeatServiceProvider = container.getProvider('heartbeat');
+        return factory(app, heartbeatServiceProvider);
+    }, "PUBLIC" /* ComponentType.PUBLIC */)
+        .setInstantiationMode("EXPLICIT" /* InstantiationMode.EXPLICIT */)
+        /**
+         * Initialize app-check-internal after app-check is initialized to make AppCheck available to
+         * other Firebase SDKs
+         */
+        .setInstanceCreatedCallback((container, _identifier, _appcheckService) => {
+        container.getProvider(APP_CHECK_NAME_INTERNAL).initialize();
+    }));
+    // The internal interface used by other Firebase products
+    _registerComponent(new Component(APP_CHECK_NAME_INTERNAL, container => {
+        const appCheck = container.getProvider('app-check').getImmediate();
+        return internalFactory(appCheck);
+    }, "PUBLIC" /* ComponentType.PUBLIC */).setInstantiationMode("EXPLICIT" /* InstantiationMode.EXPLICIT */));
+    registerVersion(name, version);
+}
+registerAppCheck();
+
+export { CustomProvider, ReCaptchaEnterpriseProvider, ReCaptchaV3Provider, getLimitedUseToken, getToken, initializeAppCheck, onTokenChanged, setTokenAutoRefreshEnabled };
+//# sourceMappingURL=index.esm.js.map
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/index.esm.js.map b/frontend-old/node_modules/@firebase/app-check/dist/esm/index.esm.js.map
new file mode 100644
index 0000000..cc29023
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/index.esm.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.esm.js","sources":["../../src/state.ts","../../src/constants.ts","../../src/proactive-refresh.ts","../../src/errors.ts","../../src/util.ts","../../src/client.ts","../../src/indexeddb.ts","../../src/logger.ts","../../src/storage.ts","../../src/debug.ts","../../src/internal-api.ts","../../src/factory.ts","../../src/recaptcha.ts","../../src/providers.ts","../../src/api.ts","../../src/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport {\n  AppCheckProvider,\n  AppCheckTokenInternal,\n  AppCheckTokenObserver\n} from './types';\nimport { Refresher } from './proactive-refresh';\nimport { Deferred } from '@firebase/util';\nimport { GreCAPTCHA } from './recaptcha';\nexport interface AppCheckState {\n  activated: boolean;\n  tokenObservers: AppCheckTokenObserver[];\n  provider?: AppCheckProvider;\n  token?: AppCheckTokenInternal;\n  cachedTokenPromise?: Promise<AppCheckTokenInternal | undefined>;\n  exchangeTokenPromise?: Promise<AppCheckTokenInternal>;\n  tokenRefresher?: Refresher;\n  reCAPTCHAState?: ReCAPTCHAState;\n  isTokenAutoRefreshEnabled?: boolean;\n}\n\nexport interface ReCAPTCHAState {\n  initialized: Deferred<GreCAPTCHA>;\n  widgetId?: string;\n  // True if the most recent recaptcha check succeeded.\n  succeeded?: boolean;\n}\n\nexport interface DebugState {\n  initialized: boolean;\n  enabled: boolean;\n  token?: Deferred<string>;\n}\n\nconst APP_CHECK_STATES = new Map<FirebaseApp, AppCheckState>();\nexport const DEFAULT_STATE: AppCheckState = {\n  activated: false,\n  tokenObservers: []\n};\n\nconst DEBUG_STATE: DebugState = {\n  initialized: false,\n  enabled: false\n};\n\n/**\n * Gets a reference to the state object.\n */\nexport function getStateReference(app: FirebaseApp): AppCheckState {\n  return APP_CHECK_STATES.get(app) || { ...DEFAULT_STATE };\n}\n\n/**\n * Set once on initialization. The map should hold the same reference to the\n * same object until this entry is deleted.\n */\nexport function setInitialState(\n  app: FirebaseApp,\n  state: AppCheckState\n): AppCheckState {\n  APP_CHECK_STATES.set(app, state);\n  return APP_CHECK_STATES.get(app) as AppCheckState;\n}\n\n// for testing only\nexport function clearState(): void {\n  APP_CHECK_STATES.clear();\n  DEBUG_STATE.enabled = false;\n  DEBUG_STATE.token = undefined;\n  DEBUG_STATE.initialized = false;\n}\n\nexport function getDebugState(): DebugState {\n  return DEBUG_STATE;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nexport const BASE_ENDPOINT =\n  'https://content-firebaseappcheck.googleapis.com/v1';\n\nexport const EXCHANGE_RECAPTCHA_TOKEN_METHOD = 'exchangeRecaptchaV3Token';\nexport const EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD =\n  'exchangeRecaptchaEnterpriseToken';\nexport const EXCHANGE_DEBUG_TOKEN_METHOD = 'exchangeDebugToken';\n\nexport const TOKEN_REFRESH_TIME = {\n  /**\n   * The offset time before token natural expiration to run the refresh.\n   * This is currently 5 minutes.\n   */\n  OFFSET_DURATION: 5 * 60 * 1000,\n  /**\n   * This is the first retrial wait after an error. This is currently\n   * 30 seconds.\n   */\n  RETRIAL_MIN_WAIT: 30 * 1000,\n  /**\n   * This is the maximum retrial wait, currently 16 minutes.\n   */\n  RETRIAL_MAX_WAIT: 16 * 60 * 1000\n};\n\n/**\n * One day in millis, for certain error code backoffs.\n */\nexport const ONE_DAY = 24 * 60 * 60 * 1000;\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Deferred } from '@firebase/util';\n\n/**\n * Port from auth proactiverefresh.js\n *\n */\n// TODO: move it to @firebase/util?\n// TODO: allow to config whether refresh should happen in the background\nexport class Refresher {\n  private pending: Deferred<unknown> | null = null;\n  private nextErrorWaitInterval: number;\n  constructor(\n    private readonly operation: () => Promise<unknown>,\n    private readonly retryPolicy: (error: unknown) => boolean,\n    private readonly getWaitDuration: () => number,\n    private readonly lowerBound: number,\n    private readonly upperBound: number\n  ) {\n    this.nextErrorWaitInterval = lowerBound;\n\n    if (lowerBound > upperBound) {\n      throw new Error(\n        'Proactive refresh lower bound greater than upper bound!'\n      );\n    }\n  }\n\n  start(): void {\n    this.nextErrorWaitInterval = this.lowerBound;\n    this.process(true).catch(() => {\n      /* we don't care about the result */\n    });\n  }\n\n  stop(): void {\n    if (this.pending) {\n      this.pending.reject('cancelled');\n      this.pending = null;\n    }\n  }\n\n  isRunning(): boolean {\n    return !!this.pending;\n  }\n\n  private async process(hasSucceeded: boolean): Promise<void> {\n    this.stop();\n    try {\n      this.pending = new Deferred();\n      this.pending.promise.catch(_e => {\n        /* ignore */\n      });\n      await sleep(this.getNextRun(hasSucceeded));\n\n      // Why do we resolve a promise, then immediate wait for it?\n      // We do it to make the promise chain cancellable.\n      // We can call stop() which rejects the promise before the following line execute, which makes\n      // the code jump to the catch block.\n      // TODO: unit test this\n      this.pending.resolve();\n      await this.pending.promise;\n      this.pending = new Deferred();\n      this.pending.promise.catch(_e => {\n        /* ignore */\n      });\n      await this.operation();\n\n      this.pending.resolve();\n      await this.pending.promise;\n\n      this.process(true).catch(() => {\n        /* we don't care about the result */\n      });\n    } catch (error) {\n      if (this.retryPolicy(error)) {\n        this.process(false).catch(() => {\n          /* we don't care about the result */\n        });\n      } else {\n        this.stop();\n      }\n    }\n  }\n\n  private getNextRun(hasSucceeded: boolean): number {\n    if (hasSucceeded) {\n      // If last operation succeeded, reset next error wait interval and return\n      // the default wait duration.\n      this.nextErrorWaitInterval = this.lowerBound;\n      // Return typical wait duration interval after a successful operation.\n      return this.getWaitDuration();\n    } else {\n      // Get next error wait interval.\n      const currentErrorWaitInterval = this.nextErrorWaitInterval;\n      // Double interval for next consecutive error.\n      this.nextErrorWaitInterval *= 2;\n      // Make sure next wait interval does not exceed the maximum upper bound.\n      if (this.nextErrorWaitInterval > this.upperBound) {\n        this.nextErrorWaitInterval = this.upperBound;\n      }\n      return currentErrorWaitInterval;\n    }\n  }\n}\n\nfunction sleep(ms: number): Promise<void> {\n  return new Promise<void>(resolve => {\n    setTimeout(resolve, ms);\n  });\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ErrorFactory, ErrorMap } from '@firebase/util';\n\nexport const enum AppCheckError {\n  ALREADY_INITIALIZED = 'already-initialized',\n  USE_BEFORE_ACTIVATION = 'use-before-activation',\n  FETCH_NETWORK_ERROR = 'fetch-network-error',\n  FETCH_PARSE_ERROR = 'fetch-parse-error',\n  FETCH_STATUS_ERROR = 'fetch-status-error',\n  STORAGE_OPEN = 'storage-open',\n  STORAGE_GET = 'storage-get',\n  STORAGE_WRITE = 'storage-set',\n  RECAPTCHA_ERROR = 'recaptcha-error',\n  INITIAL_THROTTLE = 'initial-throttle',\n  THROTTLED = 'throttled'\n}\n\nconst ERRORS: ErrorMap<AppCheckError> = {\n  [AppCheckError.ALREADY_INITIALIZED]:\n    'You have already called initializeAppCheck() for FirebaseApp {$appName} with ' +\n    'different options. To avoid this error, call initializeAppCheck() with the ' +\n    'same options as when it was originally called. This will return the ' +\n    'already initialized instance.',\n  [AppCheckError.USE_BEFORE_ACTIVATION]:\n    'App Check is being used before initializeAppCheck() is called for FirebaseApp {$appName}. ' +\n    'Call initializeAppCheck() before instantiating other Firebase services.',\n  [AppCheckError.FETCH_NETWORK_ERROR]:\n    'Fetch failed to connect to a network. Check Internet connection. ' +\n    'Original error: {$originalErrorMessage}.',\n  [AppCheckError.FETCH_PARSE_ERROR]:\n    'Fetch client could not parse response.' +\n    ' Original error: {$originalErrorMessage}.',\n  [AppCheckError.FETCH_STATUS_ERROR]:\n    'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',\n  [AppCheckError.STORAGE_OPEN]:\n    'Error thrown when opening storage. Original error: {$originalErrorMessage}.',\n  [AppCheckError.STORAGE_GET]:\n    'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',\n  [AppCheckError.STORAGE_WRITE]:\n    'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',\n  [AppCheckError.RECAPTCHA_ERROR]: 'ReCAPTCHA error.',\n  [AppCheckError.INITIAL_THROTTLE]: `{$httpStatus} error. Attempts allowed again after {$time}`,\n  [AppCheckError.THROTTLED]: `Requests throttled due to previous {$httpStatus} error. Attempts allowed again after {$time}`\n};\n\ninterface ErrorParams {\n  [AppCheckError.ALREADY_INITIALIZED]: { appName: string };\n  [AppCheckError.USE_BEFORE_ACTIVATION]: { appName: string };\n  [AppCheckError.FETCH_NETWORK_ERROR]: { originalErrorMessage: string };\n  [AppCheckError.FETCH_PARSE_ERROR]: { originalErrorMessage: string };\n  [AppCheckError.FETCH_STATUS_ERROR]: { httpStatus: number };\n  [AppCheckError.STORAGE_OPEN]: { originalErrorMessage?: string };\n  [AppCheckError.STORAGE_GET]: { originalErrorMessage?: string };\n  [AppCheckError.STORAGE_WRITE]: { originalErrorMessage?: string };\n  [AppCheckError.INITIAL_THROTTLE]: { time: string; httpStatus: number };\n  [AppCheckError.THROTTLED]: { time: string; httpStatus: number };\n}\n\nexport const ERROR_FACTORY = new ErrorFactory<AppCheckError, ErrorParams>(\n  'appCheck',\n  'AppCheck',\n  ERRORS\n);\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { GreCAPTCHA } from './recaptcha';\nimport { getStateReference } from './state';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport { FirebaseApp } from '@firebase/app';\n\nexport function getRecaptcha(\n  isEnterprise: boolean = false\n): GreCAPTCHA | undefined {\n  if (isEnterprise) {\n    return self.grecaptcha?.enterprise;\n  }\n  return self.grecaptcha;\n}\n\nexport function ensureActivated(app: FirebaseApp): void {\n  if (!getStateReference(app).activated) {\n    throw ERROR_FACTORY.create(AppCheckError.USE_BEFORE_ACTIVATION, {\n      appName: app.name\n    });\n  }\n}\n\nexport function getDurationString(durationInMillis: number): string {\n  const totalSeconds = Math.round(durationInMillis / 1000);\n  const days = Math.floor(totalSeconds / (3600 * 24));\n  const hours = Math.floor((totalSeconds - days * 3600 * 24) / 3600);\n  const minutes = Math.floor(\n    (totalSeconds - days * 3600 * 24 - hours * 3600) / 60\n  );\n  const seconds = totalSeconds - days * 3600 * 24 - hours * 3600 - minutes * 60;\n\n  let result = '';\n  if (days) {\n    result += pad(days) + 'd:';\n  }\n  if (hours) {\n    result += pad(hours) + 'h:';\n  }\n  result += pad(minutes) + 'm:' + pad(seconds) + 's';\n  return result;\n}\n\nfunction pad(value: number): string {\n  if (value === 0) {\n    return '00';\n  }\n  return value >= 10 ? value.toString() : '0' + value;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  BASE_ENDPOINT,\n  EXCHANGE_DEBUG_TOKEN_METHOD,\n  EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD,\n  EXCHANGE_RECAPTCHA_TOKEN_METHOD\n} from './constants';\nimport { FirebaseApp } from '@firebase/app';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport { Provider } from '@firebase/component';\nimport { AppCheckTokenInternal } from './types';\n\n/**\n * Response JSON returned from AppCheck server endpoint.\n */\ninterface AppCheckResponse {\n  token: string;\n  // timeToLive\n  ttl: string;\n}\n\ninterface AppCheckRequest {\n  url: string;\n  body: { [key: string]: string };\n}\n\nexport async function exchangeToken(\n  { url, body }: AppCheckRequest,\n  heartbeatServiceProvider: Provider<'heartbeat'>\n): Promise<AppCheckTokenInternal> {\n  const headers: HeadersInit = {\n    'Content-Type': 'application/json'\n  };\n  // If heartbeat service exists, add heartbeat header string to the header.\n  const heartbeatService = heartbeatServiceProvider.getImmediate({\n    optional: true\n  });\n  if (heartbeatService) {\n    const heartbeatsHeader = await heartbeatService.getHeartbeatsHeader();\n    if (heartbeatsHeader) {\n      headers['X-Firebase-Client'] = heartbeatsHeader;\n    }\n  }\n  const options: RequestInit = {\n    method: 'POST',\n    body: JSON.stringify(body),\n    headers\n  };\n  let response;\n  try {\n    response = await fetch(url, options);\n  } catch (originalError) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_NETWORK_ERROR, {\n      originalErrorMessage: (originalError as Error)?.message\n    });\n  }\n\n  if (response.status !== 200) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_STATUS_ERROR, {\n      httpStatus: response.status\n    });\n  }\n\n  let responseBody: AppCheckResponse;\n  try {\n    // JSON parsing throws SyntaxError if the response body isn't a JSON string.\n    responseBody = await response.json();\n  } catch (originalError) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_PARSE_ERROR, {\n      originalErrorMessage: (originalError as Error)?.message\n    });\n  }\n\n  // Protobuf duration format.\n  // https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/Duration\n  const match = responseBody.ttl.match(/^([\\d.]+)(s)$/);\n  if (!match || !match[2] || isNaN(Number(match[1]))) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_PARSE_ERROR, {\n      originalErrorMessage:\n        `ttl field (timeToLive) is not in standard Protobuf Duration ` +\n        `format: ${responseBody.ttl}`\n    });\n  }\n  const timeToLiveAsNumber = Number(match[1]) * 1000;\n\n  const now = Date.now();\n  return {\n    token: responseBody.token,\n    expireTimeMillis: now + timeToLiveAsNumber,\n    issuedAtTimeMillis: now\n  };\n}\n\nexport function getExchangeRecaptchaV3TokenRequest(\n  app: FirebaseApp,\n  reCAPTCHAToken: string\n): AppCheckRequest {\n  const { projectId, appId, apiKey } = app.options;\n\n  return {\n    url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_TOKEN_METHOD}?key=${apiKey}`,\n    body: {\n      'recaptcha_v3_token': reCAPTCHAToken\n    }\n  };\n}\n\nexport function getExchangeRecaptchaEnterpriseTokenRequest(\n  app: FirebaseApp,\n  reCAPTCHAToken: string\n): AppCheckRequest {\n  const { projectId, appId, apiKey } = app.options;\n\n  return {\n    url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD}?key=${apiKey}`,\n    body: {\n      'recaptcha_enterprise_token': reCAPTCHAToken\n    }\n  };\n}\n\nexport function getExchangeDebugTokenRequest(\n  app: FirebaseApp,\n  debugToken: string\n): AppCheckRequest {\n  const { projectId, appId, apiKey } = app.options;\n\n  return {\n    url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_DEBUG_TOKEN_METHOD}?key=${apiKey}`,\n    body: {\n      // eslint-disable-next-line\n      debug_token: debugToken\n    }\n  };\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport { AppCheckTokenInternal } from './types';\nconst DB_NAME = 'firebase-app-check-database';\nconst DB_VERSION = 1;\nconst STORE_NAME = 'firebase-app-check-store';\nconst DEBUG_TOKEN_KEY = 'debug-token';\n\nlet dbPromise: Promise<IDBDatabase> | null = null;\nfunction getDBPromise(): Promise<IDBDatabase> {\n  if (dbPromise) {\n    return dbPromise;\n  }\n\n  dbPromise = new Promise((resolve, reject) => {\n    try {\n      const request = indexedDB.open(DB_NAME, DB_VERSION);\n\n      request.onsuccess = event => {\n        resolve((event.target as IDBOpenDBRequest).result);\n      };\n\n      request.onerror = event => {\n        reject(\n          ERROR_FACTORY.create(AppCheckError.STORAGE_OPEN, {\n            originalErrorMessage: (event.target as IDBRequest).error?.message\n          })\n        );\n      };\n\n      request.onupgradeneeded = event => {\n        const db = (event.target as IDBOpenDBRequest).result;\n\n        // We don't use 'break' in this switch statement, the fall-through\n        // behavior is what we want, because if there are multiple versions between\n        // the old version and the current version, we want ALL the migrations\n        // that correspond to those versions to run, not only the last one.\n        // eslint-disable-next-line default-case\n        switch (event.oldVersion) {\n          case 0:\n            db.createObjectStore(STORE_NAME, {\n              keyPath: 'compositeKey'\n            });\n        }\n      };\n    } catch (e) {\n      reject(\n        ERROR_FACTORY.create(AppCheckError.STORAGE_OPEN, {\n          originalErrorMessage: (e as Error)?.message\n        })\n      );\n    }\n  });\n\n  return dbPromise;\n}\n\nexport function readTokenFromIndexedDB(\n  app: FirebaseApp\n): Promise<AppCheckTokenInternal | undefined> {\n  return read(computeKey(app)) as Promise<AppCheckTokenInternal | undefined>;\n}\n\nexport function writeTokenToIndexedDB(\n  app: FirebaseApp,\n  token?: AppCheckTokenInternal\n): Promise<void> {\n  return write(computeKey(app), token);\n}\n\nexport function writeDebugTokenToIndexedDB(token: string): Promise<void> {\n  return write(DEBUG_TOKEN_KEY, token);\n}\n\nexport function readDebugTokenFromIndexedDB(): Promise<string | undefined> {\n  return read(DEBUG_TOKEN_KEY) as Promise<string | undefined>;\n}\n\nasync function write(key: string, value: unknown): Promise<void> {\n  const db = await getDBPromise();\n\n  const transaction = db.transaction(STORE_NAME, 'readwrite');\n  const store = transaction.objectStore(STORE_NAME);\n  const request = store.put({\n    compositeKey: key,\n    value\n  });\n\n  return new Promise((resolve, reject) => {\n    request.onsuccess = _event => {\n      resolve();\n    };\n\n    transaction.onerror = event => {\n      reject(\n        ERROR_FACTORY.create(AppCheckError.STORAGE_WRITE, {\n          originalErrorMessage: (event.target as IDBRequest).error?.message\n        })\n      );\n    };\n  });\n}\n\nasync function read(key: string): Promise<unknown> {\n  const db = await getDBPromise();\n\n  const transaction = db.transaction(STORE_NAME, 'readonly');\n  const store = transaction.objectStore(STORE_NAME);\n  const request = store.get(key);\n\n  return new Promise((resolve, reject) => {\n    request.onsuccess = event => {\n      const result = (event.target as IDBRequest).result;\n\n      if (result) {\n        resolve(result.value);\n      } else {\n        resolve(undefined);\n      }\n    };\n\n    transaction.onerror = event => {\n      reject(\n        ERROR_FACTORY.create(AppCheckError.STORAGE_GET, {\n          originalErrorMessage: (event.target as IDBRequest).error?.message\n        })\n      );\n    };\n  });\n}\n\nfunction computeKey(app: FirebaseApp): string {\n  return `${app.options.appId}-${app.name}`;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Logger } from '@firebase/logger';\n\nexport const logger = new Logger('@firebase/app-check');\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport { isIndexedDBAvailable } from '@firebase/util';\nimport {\n  readDebugTokenFromIndexedDB,\n  readTokenFromIndexedDB,\n  writeDebugTokenToIndexedDB,\n  writeTokenToIndexedDB\n} from './indexeddb';\nimport { logger } from './logger';\nimport { AppCheckTokenInternal } from './types';\n\n/**\n * Always resolves. In case of an error reading from indexeddb, resolve with undefined\n */\nexport async function readTokenFromStorage(\n  app: FirebaseApp\n): Promise<AppCheckTokenInternal | undefined> {\n  if (isIndexedDBAvailable()) {\n    let token = undefined;\n    try {\n      token = await readTokenFromIndexedDB(app);\n    } catch (e) {\n      // swallow the error and return undefined\n      logger.warn(`Failed to read token from IndexedDB. Error: ${e}`);\n    }\n    return token;\n  }\n\n  return undefined;\n}\n\n/**\n * Always resolves. In case of an error writing to indexeddb, print a warning and resolve the promise\n */\nexport function writeTokenToStorage(\n  app: FirebaseApp,\n  token?: AppCheckTokenInternal\n): Promise<void> {\n  if (isIndexedDBAvailable()) {\n    return writeTokenToIndexedDB(app, token).catch(e => {\n      // swallow the error and resolve the promise\n      logger.warn(`Failed to write token to IndexedDB. Error: ${e}`);\n    });\n  }\n\n  return Promise.resolve();\n}\n\nexport async function readOrCreateDebugTokenFromStorage(): Promise<string> {\n  /**\n   * Theoretically race condition can happen if we read, then write in 2 separate transactions.\n   * But it won't happen here, because this function will be called exactly once.\n   */\n  let existingDebugToken: string | undefined = undefined;\n  try {\n    existingDebugToken = await readDebugTokenFromIndexedDB();\n  } catch (_e) {\n    // failed to read from indexeddb. We assume there is no existing debug token, and generate a new one.\n  }\n\n  if (!existingDebugToken) {\n    // create a new debug token\n    // This function is only available in secure contexts. See https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts\n    const newToken = crypto.randomUUID();\n    // We don't need to block on writing to indexeddb\n    // In case persistence failed, a new debug token will be generated every time the page is refreshed.\n    // It renders the debug token useless because you have to manually register(whitelist) the new token in the firebase console again and again.\n    // If you see this error trying to use debug token, it probably means you are using a browser that doesn't support indexeddb.\n    // You should switch to a different browser that supports indexeddb\n    writeDebugTokenToIndexedDB(newToken).catch(e =>\n      logger.warn(`Failed to persist debug token to IndexedDB. Error: ${e}`)\n    );\n    return newToken;\n  } else {\n    return existingDebugToken;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { getDebugState } from './state';\nimport { readOrCreateDebugTokenFromStorage } from './storage';\nimport { Deferred, getGlobal } from '@firebase/util';\n\ndeclare global {\n  // var must be used for global scopes\n  // https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-4.html#type-checking-for-globalthis\n  // eslint-disable-next-line no-var\n  var FIREBASE_APPCHECK_DEBUG_TOKEN: boolean | string | undefined;\n}\n\nexport function isDebugMode(): boolean {\n  const debugState = getDebugState();\n  return debugState.enabled;\n}\n\nexport async function getDebugToken(): Promise<string> {\n  const state = getDebugState();\n\n  if (state.enabled && state.token) {\n    return state.token.promise;\n  } else {\n    // should not happen!\n    throw Error(`\n            Can't get debug token in production mode.\n        `);\n  }\n}\n\nexport function initializeDebugMode(): void {\n  const globals = getGlobal();\n  const debugState = getDebugState();\n  // Set to true if this function has been called, whether or not\n  // it enabled debug mode.\n  debugState.initialized = true;\n\n  if (\n    typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== 'string' &&\n    globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== true\n  ) {\n    return;\n  }\n\n  debugState.enabled = true;\n  const deferredToken = new Deferred<string>();\n  debugState.token = deferredToken;\n\n  if (typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN === 'string') {\n    deferredToken.resolve(globals.FIREBASE_APPCHECK_DEBUG_TOKEN);\n  } else {\n    deferredToken.resolve(readOrCreateDebugTokenFromStorage());\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport {\n  AppCheckTokenResult,\n  AppCheckTokenInternal,\n  AppCheckTokenObserver,\n  ListenerType\n} from './types';\nimport { AppCheckTokenListener } from './public-types';\nimport { getStateReference } from './state';\nimport { TOKEN_REFRESH_TIME } from './constants';\nimport { Refresher } from './proactive-refresh';\nimport { ensureActivated } from './util';\nimport { exchangeToken, getExchangeDebugTokenRequest } from './client';\nimport { writeTokenToStorage } from './storage';\nimport { getDebugToken, isDebugMode } from './debug';\nimport { base64, FirebaseError } from '@firebase/util';\nimport { logger } from './logger';\nimport { AppCheckService } from './factory';\nimport { AppCheckError } from './errors';\n\n// Initial hardcoded value agreed upon across platforms for initial launch.\n// Format left open for possible dynamic error values and other fields in the future.\nexport const defaultTokenErrorData = { error: 'UNKNOWN_ERROR' };\n\n/**\n * Stringify and base64 encode token error data.\n *\n * @param tokenError Error data, currently hardcoded.\n */\nexport function formatDummyToken(\n  tokenErrorData: Record<string, string>\n): string {\n  return base64.encodeString(\n    JSON.stringify(tokenErrorData),\n    /* webSafe= */ false\n  );\n}\n\n/**\n * This function always resolves.\n * The result will contain an error field if there is any error.\n * In case there is an error, the token field in the result will be populated with a dummy value\n */\nexport async function getToken(\n  appCheck: AppCheckService,\n  forceRefresh = false,\n  shouldLogErrors = false\n): Promise<AppCheckTokenResult> {\n  const app = appCheck.app;\n  ensureActivated(app);\n\n  const state = getStateReference(app);\n\n  /**\n   * First check if there is a token in memory from a previous `getToken()` call.\n   */\n  let token: AppCheckTokenInternal | undefined = state.token;\n  let error: Error | undefined = undefined;\n\n  /**\n   * If an invalid token was found in memory, clear token from\n   * memory and unset the local variable `token`.\n   */\n  if (token && !isValid(token)) {\n    state.token = undefined;\n    token = undefined;\n  }\n\n  /**\n   * If there is no valid token in memory, try to load token from indexedDB.\n   */\n  if (!token) {\n    // cachedTokenPromise contains the token found in IndexedDB or undefined if not found.\n    const cachedToken = await state.cachedTokenPromise;\n    if (cachedToken) {\n      if (isValid(cachedToken)) {\n        token = cachedToken;\n      } else {\n        // If there was an invalid token in the indexedDB cache, clear it.\n        await writeTokenToStorage(app, undefined);\n      }\n    }\n  }\n\n  // Return the cached token (from either memory or indexedDB) if it's valid\n  if (!forceRefresh && token && isValid(token)) {\n    return {\n      token: token.token\n    };\n  }\n\n  // Only set to true if this `getToken()` call is making the actual\n  // REST call to the exchange endpoint, versus waiting for an already\n  // in-flight call (see debug and regular exchange endpoint paths below)\n  let shouldCallListeners = false;\n\n  /**\n   * DEBUG MODE\n   * If debug mode is set, and there is no cached token, fetch a new App\n   * Check token using the debug token, and return it directly.\n   */\n  if (isDebugMode()) {\n    try {\n      // Avoid making another call to the exchange endpoint if one is in flight.\n      if (!state.exchangeTokenPromise) {\n        state.exchangeTokenPromise = exchangeToken(\n          getExchangeDebugTokenRequest(app, await getDebugToken()),\n          appCheck.heartbeatServiceProvider\n        ).finally(() => {\n          // Clear promise when settled - either resolved or rejected.\n          state.exchangeTokenPromise = undefined;\n        });\n        shouldCallListeners = true;\n      }\n      const tokenFromDebugExchange: AppCheckTokenInternal =\n        await state.exchangeTokenPromise;\n      // Write debug token to indexedDB.\n      await writeTokenToStorage(app, tokenFromDebugExchange);\n      // Write debug token to state.\n      state.token = tokenFromDebugExchange;\n      return { token: tokenFromDebugExchange.token };\n    } catch (e) {\n      if (\n        (e as FirebaseError).code === `appCheck/${AppCheckError.THROTTLED}` ||\n        (e as FirebaseError).code ===\n          `appCheck/${AppCheckError.INITIAL_THROTTLE}`\n      ) {\n        // Warn if throttled, but do not treat it as an error.\n        logger.warn((e as FirebaseError).message);\n      } else if (shouldLogErrors) {\n        logger.error(e);\n      }\n      // Return dummy token and error\n      return makeDummyTokenResult(e as FirebaseError);\n    }\n  }\n\n  /**\n   * There are no valid tokens in memory or indexedDB and we are not in\n   * debug mode.\n   * Request a new token from the exchange endpoint.\n   */\n  try {\n    // Avoid making another call to the exchange endpoint if one is in flight.\n    if (!state.exchangeTokenPromise) {\n      // state.provider is populated in initializeAppCheck()\n      // ensureActivated() at the top of this function checks that\n      // initializeAppCheck() has been called.\n      state.exchangeTokenPromise = state.provider!.getToken().finally(() => {\n        // Clear promise when settled - either resolved or rejected.\n        state.exchangeTokenPromise = undefined;\n      });\n      shouldCallListeners = true;\n    }\n    token = await getStateReference(app).exchangeTokenPromise;\n  } catch (e) {\n    if (\n      (e as FirebaseError).code === `appCheck/${AppCheckError.THROTTLED}` ||\n      (e as FirebaseError).code === `appCheck/${AppCheckError.INITIAL_THROTTLE}`\n    ) {\n      // Warn if throttled, but do not treat it as an error.\n      logger.warn((e as FirebaseError).message);\n    } else if (shouldLogErrors) {\n      logger.error(e);\n    }\n    // Always save error to be added to dummy token.\n    error = e as FirebaseError;\n  }\n\n  let interopTokenResult: AppCheckTokenResult | undefined;\n  if (!token) {\n    // If token is undefined, there must be an error.\n    // Return a dummy token along with the error.\n    interopTokenResult = makeDummyTokenResult(error!);\n  } else if (error) {\n    if (isValid(token)) {\n      // It's also possible a valid token exists, but there's also an error.\n      // (Such as if the token is almost expired, tries to refresh, and\n      // the exchange request fails.)\n      // We add a special error property here so that the refresher will\n      // count this as a failed attempt and use the backoff instead of\n      // retrying repeatedly with no delay, but any 3P listeners will not\n      // be hindered in getting the still-valid token.\n      interopTokenResult = {\n        token: token.token,\n        internalError: error\n      };\n    } else {\n      // No invalid tokens should make it to this step. Memory and cached tokens\n      // are checked. Other tokens are from fresh exchanges. But just in case.\n      interopTokenResult = makeDummyTokenResult(error!);\n    }\n  } else {\n    interopTokenResult = {\n      token: token.token\n    };\n    // write the new token to the memory state as well as the persistent storage.\n    // Only do it if we got a valid new token\n    state.token = token;\n    await writeTokenToStorage(app, token);\n  }\n\n  if (shouldCallListeners) {\n    notifyTokenListeners(app, interopTokenResult);\n  }\n  return interopTokenResult;\n}\n\n/**\n * Internal API for limited use tokens. Skips all FAC state and simply calls\n * the underlying provider.\n */\nexport async function getLimitedUseToken(\n  appCheck: AppCheckService\n): Promise<AppCheckTokenResult> {\n  const app = appCheck.app;\n  ensureActivated(app);\n\n  const { provider } = getStateReference(app);\n\n  if (isDebugMode()) {\n    const debugToken = await getDebugToken();\n    const { token } = await exchangeToken(\n      getExchangeDebugTokenRequest(app, debugToken),\n      appCheck.heartbeatServiceProvider\n    );\n    return { token };\n  } else {\n    // provider is definitely valid since we ensure AppCheck was activated\n    const { token } = await provider!.getToken();\n    return { token };\n  }\n}\n\nexport function addTokenListener(\n  appCheck: AppCheckService,\n  type: ListenerType,\n  listener: AppCheckTokenListener,\n  onError?: (error: Error) => void\n): void {\n  const { app } = appCheck;\n  const state = getStateReference(app);\n  const tokenObserver: AppCheckTokenObserver = {\n    next: listener,\n    error: onError,\n    type\n  };\n  state.tokenObservers = [...state.tokenObservers, tokenObserver];\n\n  // Invoke the listener async immediately if there is a valid token\n  // in memory.\n  if (state.token && isValid(state.token)) {\n    const validToken = state.token;\n    Promise.resolve()\n      .then(() => {\n        listener({ token: validToken.token });\n        initTokenRefresher(appCheck);\n      })\n      .catch(() => {\n        /* we don't care about exceptions thrown in listeners */\n      });\n  }\n\n  /**\n   * Wait for any cached token promise to resolve before starting the token\n   * refresher. The refresher checks to see if there is an existing token\n   * in state and calls the exchange endpoint if not. We should first let the\n   * IndexedDB check have a chance to populate state if it can.\n   *\n   * Listener call isn't needed here because cachedTokenPromise will call any\n   * listeners that exist when it resolves.\n   */\n\n  // state.cachedTokenPromise is always populated in `activate()`.\n  void state.cachedTokenPromise!.then(() => initTokenRefresher(appCheck));\n}\n\nexport function removeTokenListener(\n  app: FirebaseApp,\n  listener: AppCheckTokenListener\n): void {\n  const state = getStateReference(app);\n\n  const newObservers = state.tokenObservers.filter(\n    tokenObserver => tokenObserver.next !== listener\n  );\n  if (\n    newObservers.length === 0 &&\n    state.tokenRefresher &&\n    state.tokenRefresher.isRunning()\n  ) {\n    state.tokenRefresher.stop();\n  }\n\n  state.tokenObservers = newObservers;\n}\n\n/**\n * Logic to create and start refresher as needed.\n */\nfunction initTokenRefresher(appCheck: AppCheckService): void {\n  const { app } = appCheck;\n  const state = getStateReference(app);\n  // Create the refresher but don't start it if `isTokenAutoRefreshEnabled`\n  // is not true.\n  let refresher: Refresher | undefined = state.tokenRefresher;\n  if (!refresher) {\n    refresher = createTokenRefresher(appCheck);\n    state.tokenRefresher = refresher;\n  }\n  if (!refresher.isRunning() && state.isTokenAutoRefreshEnabled) {\n    refresher.start();\n  }\n}\n\nfunction createTokenRefresher(appCheck: AppCheckService): Refresher {\n  const { app } = appCheck;\n  return new Refresher(\n    // Keep in mind when this fails for any reason other than the ones\n    // for which we should retry, it will effectively stop the proactive refresh.\n    async () => {\n      const state = getStateReference(app);\n      // If there is no token, we will try to load it from storage and use it\n      // If there is a token, we force refresh it because we know it's going to expire soon\n      let result;\n      if (!state.token) {\n        result = await getToken(appCheck);\n      } else {\n        result = await getToken(appCheck, true);\n      }\n\n      /**\n       * getToken() always resolves. In case the result has an error field defined, it means\n       * the operation failed, and we should retry.\n       */\n      if (result.error) {\n        throw result.error;\n      }\n      /**\n       * A special `internalError` field reflects that there was an error\n       * getting a new token from the exchange endpoint, but there's still a\n       * previous token that's valid for now and this should be passed to 2P/3P\n       * requests for a token. But we want this callback (`this.operation` in\n       * `Refresher`) to throw in order to kick off the Refresher's retry\n       * backoff. (Setting `hasSucceeded` to false.)\n       */\n      if (result.internalError) {\n        throw result.internalError;\n      }\n    },\n    () => {\n      return true;\n    },\n    () => {\n      const state = getStateReference(app);\n\n      if (state.token) {\n        // issuedAtTime + (50% * total TTL) + 5 minutes\n        let nextRefreshTimeMillis =\n          state.token.issuedAtTimeMillis +\n          (state.token.expireTimeMillis - state.token.issuedAtTimeMillis) *\n            0.5 +\n          5 * 60 * 1000;\n        // Do not allow refresh time to be past (expireTime - 5 minutes)\n        const latestAllowableRefresh =\n          state.token.expireTimeMillis - 5 * 60 * 1000;\n        nextRefreshTimeMillis = Math.min(\n          nextRefreshTimeMillis,\n          latestAllowableRefresh\n        );\n        return Math.max(0, nextRefreshTimeMillis - Date.now());\n      } else {\n        return 0;\n      }\n    },\n    TOKEN_REFRESH_TIME.RETRIAL_MIN_WAIT,\n    TOKEN_REFRESH_TIME.RETRIAL_MAX_WAIT\n  );\n}\n\nexport function notifyTokenListeners(\n  app: FirebaseApp,\n  token: AppCheckTokenResult\n): void {\n  const observers = getStateReference(app).tokenObservers;\n\n  for (const observer of observers) {\n    try {\n      if (observer.type === ListenerType.EXTERNAL && token.error != null) {\n        // If this listener was added by a 3P call, send any token error to\n        // the supplied error handler. A 3P observer always has an error\n        // handler.\n        observer.error!(token.error);\n      } else {\n        // If the token has no error field, always return the token.\n        // If this is a 2P listener, return the token, whether or not it\n        // has an error field.\n        observer.next(token);\n      }\n    } catch (e) {\n      // Errors in the listener function itself are always ignored.\n    }\n  }\n}\n\nexport function isValid(token: AppCheckTokenInternal): boolean {\n  return token.expireTimeMillis - Date.now() > 0;\n}\n\nfunction makeDummyTokenResult(error: Error): AppCheckTokenResult {\n  return {\n    token: formatDummyToken(defaultTokenErrorData),\n    error\n  };\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { AppCheck } from './public-types';\nimport { FirebaseApp, _FirebaseService } from '@firebase/app';\nimport { FirebaseAppCheckInternal, ListenerType } from './types';\nimport {\n  getToken,\n  getLimitedUseToken,\n  addTokenListener,\n  removeTokenListener\n} from './internal-api';\nimport { Provider } from '@firebase/component';\nimport { getStateReference } from './state';\n\n/**\n * AppCheck Service class.\n */\nexport class AppCheckService implements AppCheck, _FirebaseService {\n  constructor(\n    public app: FirebaseApp,\n    public heartbeatServiceProvider: Provider<'heartbeat'>\n  ) {}\n  _delete(): Promise<void> {\n    const { tokenObservers } = getStateReference(this.app);\n    for (const tokenObserver of tokenObservers) {\n      removeTokenListener(this.app, tokenObserver.next);\n    }\n    return Promise.resolve();\n  }\n}\n\nexport function factory(\n  app: FirebaseApp,\n  heartbeatServiceProvider: Provider<'heartbeat'>\n): AppCheckService {\n  return new AppCheckService(app, heartbeatServiceProvider);\n}\n\nexport function internalFactory(\n  appCheck: AppCheckService\n): FirebaseAppCheckInternal {\n  return {\n    getToken: forceRefresh => getToken(appCheck, forceRefresh),\n    getLimitedUseToken: () => getLimitedUseToken(appCheck),\n    addTokenListener: listener =>\n      addTokenListener(appCheck, ListenerType.INTERNAL, listener),\n    removeTokenListener: listener => removeTokenListener(appCheck.app, listener)\n  };\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport { getStateReference } from './state';\nimport { Deferred } from '@firebase/util';\nimport { getRecaptcha, ensureActivated } from './util';\n\nexport const RECAPTCHA_URL = 'https://www.google.com/recaptcha/api.js';\nexport const RECAPTCHA_ENTERPRISE_URL =\n  'https://www.google.com/recaptcha/enterprise.js';\n\nexport function initializeV3(\n  app: FirebaseApp,\n  siteKey: string\n): Promise<GreCAPTCHA> {\n  const initialized = new Deferred<GreCAPTCHA>();\n\n  const state = getStateReference(app);\n  state.reCAPTCHAState = { initialized };\n\n  const divId = makeDiv(app);\n\n  const grecaptcha = getRecaptcha(false);\n  if (!grecaptcha) {\n    loadReCAPTCHAV3Script(() => {\n      const grecaptcha = getRecaptcha(false);\n\n      if (!grecaptcha) {\n        // it shouldn't happen.\n        throw new Error('no recaptcha');\n      }\n      queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n    });\n  } else {\n    queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n  }\n  return initialized.promise;\n}\nexport function initializeEnterprise(\n  app: FirebaseApp,\n  siteKey: string\n): Promise<GreCAPTCHA> {\n  const initialized = new Deferred<GreCAPTCHA>();\n\n  const state = getStateReference(app);\n  state.reCAPTCHAState = { initialized };\n\n  const divId = makeDiv(app);\n\n  const grecaptcha = getRecaptcha(true);\n  if (!grecaptcha) {\n    loadReCAPTCHAEnterpriseScript(() => {\n      const grecaptcha = getRecaptcha(true);\n\n      if (!grecaptcha) {\n        // it shouldn't happen.\n        throw new Error('no recaptcha');\n      }\n      queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n    });\n  } else {\n    queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n  }\n  return initialized.promise;\n}\n\n/**\n * Add listener to render the widget and resolve the promise when\n * the grecaptcha.ready() event fires.\n */\nfunction queueWidgetRender(\n  app: FirebaseApp,\n  siteKey: string,\n  grecaptcha: GreCAPTCHA,\n  container: string,\n  initialized: Deferred<GreCAPTCHA>\n): void {\n  grecaptcha.ready(() => {\n    // Invisible widgets allow us to set a different siteKey for each widget,\n    // so we use them to support multiple apps\n    renderInvisibleWidget(app, siteKey, grecaptcha, container);\n    initialized.resolve(grecaptcha);\n  });\n}\n\n/**\n * Add invisible div to page.\n */\nfunction makeDiv(app: FirebaseApp): string {\n  const divId = `fire_app_check_${app.name}`;\n  const invisibleDiv = document.createElement('div');\n  invisibleDiv.id = divId;\n  invisibleDiv.style.display = 'none';\n\n  document.body.appendChild(invisibleDiv);\n  return divId;\n}\n\nexport async function getToken(app: FirebaseApp): Promise<string> {\n  ensureActivated(app);\n\n  // ensureActivated() guarantees that reCAPTCHAState is set\n  const reCAPTCHAState = getStateReference(app).reCAPTCHAState!;\n  const recaptcha = await reCAPTCHAState.initialized.promise;\n\n  return new Promise((resolve, _reject) => {\n    // Updated after initialization is complete.\n    const reCAPTCHAState = getStateReference(app).reCAPTCHAState!;\n    recaptcha.ready(() => {\n      resolve(\n        // widgetId is guaranteed to be available if reCAPTCHAState.initialized.promise resolved.\n        recaptcha.execute(reCAPTCHAState.widgetId!, {\n          action: 'fire_app_check'\n        })\n      );\n    });\n  });\n}\n\n/**\n *\n * @param app\n * @param container - Id of a HTML element.\n */\nfunction renderInvisibleWidget(\n  app: FirebaseApp,\n  siteKey: string,\n  grecaptcha: GreCAPTCHA,\n  container: string\n): void {\n  const widgetId = grecaptcha.render(container, {\n    sitekey: siteKey,\n    size: 'invisible',\n    // Success callback - set state\n    callback: () => {\n      getStateReference(app).reCAPTCHAState!.succeeded = true;\n    },\n    // Failure callback - set state\n    'error-callback': () => {\n      getStateReference(app).reCAPTCHAState!.succeeded = false;\n    }\n  });\n\n  const state = getStateReference(app);\n\n  state.reCAPTCHAState = {\n    ...state.reCAPTCHAState!, // state.reCAPTCHAState is set in the initialize()\n    widgetId\n  };\n}\n\nfunction loadReCAPTCHAV3Script(onload: () => void): void {\n  const script = document.createElement('script');\n  script.src = RECAPTCHA_URL;\n  script.onload = onload;\n  document.head.appendChild(script);\n}\n\nfunction loadReCAPTCHAEnterpriseScript(onload: () => void): void {\n  const script = document.createElement('script');\n  script.src = RECAPTCHA_ENTERPRISE_URL;\n  script.onload = onload;\n  document.head.appendChild(script);\n}\n\ndeclare global {\n  interface Window {\n    grecaptcha: GreCAPTCHATopLevel | undefined;\n  }\n}\n\nexport interface GreCAPTCHATopLevel extends GreCAPTCHA {\n  enterprise: GreCAPTCHA;\n}\n\nexport interface GreCAPTCHA {\n  ready: (callback: () => void) => void;\n  execute: (siteKey: string, options: { action: string }) => Promise<string>;\n  render: (\n    container: string | HTMLElement,\n    parameters: GreCAPTCHARenderOption\n  ) => string;\n}\n\nexport interface GreCAPTCHARenderOption {\n  sitekey: string;\n  size: 'invisible';\n  callback: () => void;\n  'error-callback': () => void;\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp, _getProvider } from '@firebase/app';\nimport { Provider } from '@firebase/component';\nimport {\n  FirebaseError,\n  issuedAtTime,\n  calculateBackoffMillis\n} from '@firebase/util';\nimport {\n  exchangeToken,\n  getExchangeRecaptchaEnterpriseTokenRequest,\n  getExchangeRecaptchaV3TokenRequest\n} from './client';\nimport { ONE_DAY } from './constants';\nimport { AppCheckError, ERROR_FACTORY } from './errors';\nimport { CustomProviderOptions } from './public-types';\nimport {\n  getToken as getReCAPTCHAToken,\n  initializeV3 as initializeRecaptchaV3,\n  initializeEnterprise as initializeRecaptchaEnterprise\n} from './recaptcha';\nimport { getStateReference } from './state';\nimport { AppCheckProvider, AppCheckTokenInternal, ThrottleData } from './types';\nimport { getDurationString } from './util';\n\n/**\n * App Check provider that can obtain a reCAPTCHA V3 token and exchange it\n * for an App Check token.\n *\n * @public\n */\nexport class ReCaptchaV3Provider implements AppCheckProvider {\n  private _app?: FirebaseApp;\n  private _heartbeatServiceProvider?: Provider<'heartbeat'>;\n  /**\n   * Throttle requests on certain error codes to prevent too many retries\n   * in a short time.\n   */\n  private _throttleData: ThrottleData | null = null;\n  /**\n   * Create a ReCaptchaV3Provider instance.\n   * @param siteKey - ReCAPTCHA V3 siteKey.\n   */\n  constructor(private _siteKey: string) {}\n\n  /**\n   * Returns an App Check token.\n   * @internal\n   */\n  async getToken(): Promise<AppCheckTokenInternal> {\n    throwIfThrottled(this._throttleData);\n\n    // Top-level `getToken()` has already checked that App Check is initialized\n    // and therefore this._app and this._heartbeatServiceProvider are available.\n    const attestedClaimsToken = await getReCAPTCHAToken(this._app!).catch(\n      _e => {\n        // reCaptcha.execute() throws null which is not very descriptive.\n        throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n      }\n    );\n    // Check if a failure state was set by the recaptcha \"error-callback\".\n    if (!getStateReference(this._app!).reCAPTCHAState?.succeeded) {\n      throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n    }\n    let result;\n    try {\n      result = await exchangeToken(\n        getExchangeRecaptchaV3TokenRequest(this._app!, attestedClaimsToken),\n        this._heartbeatServiceProvider!\n      );\n    } catch (e) {\n      if (\n        (e as FirebaseError).code?.includes(AppCheckError.FETCH_STATUS_ERROR)\n      ) {\n        this._throttleData = setBackoff(\n          Number((e as FirebaseError).customData?.httpStatus),\n          this._throttleData\n        );\n        throw ERROR_FACTORY.create(AppCheckError.INITIAL_THROTTLE, {\n          time: getDurationString(\n            this._throttleData.allowRequestsAfter - Date.now()\n          ),\n          httpStatus: this._throttleData.httpStatus\n        });\n      } else {\n        throw e;\n      }\n    }\n    // If successful, clear throttle data.\n    this._throttleData = null;\n    return result;\n  }\n\n  /**\n   * @internal\n   */\n  initialize(app: FirebaseApp): void {\n    this._app = app;\n    this._heartbeatServiceProvider = _getProvider(app, 'heartbeat');\n    initializeRecaptchaV3(app, this._siteKey).catch(() => {\n      /* we don't care about the initialization result */\n    });\n  }\n\n  /**\n   * @internal\n   */\n  isEqual(otherProvider: unknown): boolean {\n    if (otherProvider instanceof ReCaptchaV3Provider) {\n      return this._siteKey === otherProvider._siteKey;\n    } else {\n      return false;\n    }\n  }\n}\n\n/**\n * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it\n * for an App Check token.\n *\n * @public\n */\nexport class ReCaptchaEnterpriseProvider implements AppCheckProvider {\n  private _app?: FirebaseApp;\n  private _heartbeatServiceProvider?: Provider<'heartbeat'>;\n  /**\n   * Throttle requests on certain error codes to prevent too many retries\n   * in a short time.\n   */\n  private _throttleData: ThrottleData | null = null;\n  /**\n   * Create a ReCaptchaEnterpriseProvider instance.\n   * @param siteKey - reCAPTCHA Enterprise score-based site key.\n   */\n  constructor(private _siteKey: string) {}\n\n  /**\n   * Returns an App Check token.\n   * @internal\n   */\n  async getToken(): Promise<AppCheckTokenInternal> {\n    throwIfThrottled(this._throttleData);\n    // Top-level `getToken()` has already checked that App Check is initialized\n    // and therefore this._app and this._heartbeatServiceProvider are available.\n    const attestedClaimsToken = await getReCAPTCHAToken(this._app!).catch(\n      _e => {\n        // reCaptcha.execute() throws null which is not very descriptive.\n        throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n      }\n    );\n    // Check if a failure state was set by the recaptcha \"error-callback\".\n    if (!getStateReference(this._app!).reCAPTCHAState?.succeeded) {\n      throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n    }\n    let result;\n    try {\n      result = await exchangeToken(\n        getExchangeRecaptchaEnterpriseTokenRequest(\n          this._app!,\n          attestedClaimsToken\n        ),\n        this._heartbeatServiceProvider!\n      );\n    } catch (e) {\n      if (\n        (e as FirebaseError).code?.includes(AppCheckError.FETCH_STATUS_ERROR)\n      ) {\n        this._throttleData = setBackoff(\n          Number((e as FirebaseError).customData?.httpStatus),\n          this._throttleData\n        );\n        throw ERROR_FACTORY.create(AppCheckError.INITIAL_THROTTLE, {\n          time: getDurationString(\n            this._throttleData.allowRequestsAfter - Date.now()\n          ),\n          httpStatus: this._throttleData.httpStatus\n        });\n      } else {\n        throw e;\n      }\n    }\n    // If successful, clear throttle data.\n    this._throttleData = null;\n    return result;\n  }\n\n  /**\n   * @internal\n   */\n  initialize(app: FirebaseApp): void {\n    this._app = app;\n    this._heartbeatServiceProvider = _getProvider(app, 'heartbeat');\n    initializeRecaptchaEnterprise(app, this._siteKey).catch(() => {\n      /* we don't care about the initialization result */\n    });\n  }\n\n  /**\n   * @internal\n   */\n  isEqual(otherProvider: unknown): boolean {\n    if (otherProvider instanceof ReCaptchaEnterpriseProvider) {\n      return this._siteKey === otherProvider._siteKey;\n    } else {\n      return false;\n    }\n  }\n}\n\n/**\n * Custom provider class.\n * @public\n */\nexport class CustomProvider implements AppCheckProvider {\n  private _app?: FirebaseApp;\n\n  constructor(private _customProviderOptions: CustomProviderOptions) {}\n\n  /**\n   * @internal\n   */\n  async getToken(): Promise<AppCheckTokenInternal> {\n    // custom provider\n    const customToken = await this._customProviderOptions.getToken();\n    // Try to extract IAT from custom token, in case this token is not\n    // being newly issued. JWT timestamps are in seconds since epoch.\n    const issuedAtTimeSeconds = issuedAtTime(customToken.token);\n    // Very basic validation, use current timestamp as IAT if JWT\n    // has no `iat` field or value is out of bounds.\n    const issuedAtTimeMillis =\n      issuedAtTimeSeconds !== null &&\n      issuedAtTimeSeconds < Date.now() &&\n      issuedAtTimeSeconds > 0\n        ? issuedAtTimeSeconds * 1000\n        : Date.now();\n\n    return { ...customToken, issuedAtTimeMillis };\n  }\n\n  /**\n   * @internal\n   */\n  initialize(app: FirebaseApp): void {\n    this._app = app;\n  }\n\n  /**\n   * @internal\n   */\n  isEqual(otherProvider: unknown): boolean {\n    if (otherProvider instanceof CustomProvider) {\n      return (\n        this._customProviderOptions.getToken.toString() ===\n        otherProvider._customProviderOptions.getToken.toString()\n      );\n    } else {\n      return false;\n    }\n  }\n}\n\n/**\n * Set throttle data to block requests until after a certain time\n * depending on the failed request's status code.\n * @param httpStatus - Status code of failed request.\n * @param throttleData - `ThrottleData` object containing previous throttle\n * data state.\n * @returns Data about current throttle state and expiration time.\n */\nfunction setBackoff(\n  httpStatus: number,\n  throttleData: ThrottleData | null\n): ThrottleData {\n  /**\n   * Block retries for 1 day for the following error codes:\n   *\n   * 404: Likely malformed URL.\n   *\n   * 403:\n   * - Attestation failed\n   * - Wrong API key\n   * - Project deleted\n   */\n  if (httpStatus === 404 || httpStatus === 403) {\n    return {\n      backoffCount: 1,\n      allowRequestsAfter: Date.now() + ONE_DAY,\n      httpStatus\n    };\n  } else {\n    /**\n     * For all other error codes, the time when it is ok to retry again\n     * is based on exponential backoff.\n     */\n    const backoffCount = throttleData ? throttleData.backoffCount : 0;\n    const backoffMillis = calculateBackoffMillis(backoffCount, 1000, 2);\n    return {\n      backoffCount: backoffCount + 1,\n      allowRequestsAfter: Date.now() + backoffMillis,\n      httpStatus\n    };\n  }\n}\n\nfunction throwIfThrottled(throttleData: ThrottleData | null): void {\n  if (throttleData) {\n    if (Date.now() - throttleData.allowRequestsAfter <= 0) {\n      // If before, throw.\n      throw ERROR_FACTORY.create(AppCheckError.THROTTLED, {\n        time: getDurationString(throttleData.allowRequestsAfter - Date.now()),\n        httpStatus: throttleData.httpStatus\n      });\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  AppCheck,\n  AppCheckOptions,\n  AppCheckTokenResult,\n  Unsubscribe,\n  PartialObserver\n} from './public-types';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport {\n  getStateReference,\n  getDebugState,\n  DEFAULT_STATE,\n  setInitialState\n} from './state';\nimport { FirebaseApp, getApp, _getProvider } from '@firebase/app';\nimport { getModularInstance, ErrorFn, NextFn } from '@firebase/util';\nimport { AppCheckService } from './factory';\nimport { AppCheckProvider, ListenerType } from './types';\nimport {\n  getToken as getTokenInternal,\n  getLimitedUseToken as getLimitedUseTokenInternal,\n  addTokenListener,\n  removeTokenListener,\n  isValid,\n  notifyTokenListeners\n} from './internal-api';\nimport { readTokenFromStorage } from './storage';\nimport { getDebugToken, initializeDebugMode, isDebugMode } from './debug';\nimport { logger } from './logger';\n\ndeclare module '@firebase/component' {\n  interface NameServiceMapping {\n    'app-check': AppCheckService;\n  }\n}\n\nexport {\n  ReCaptchaV3Provider,\n  CustomProvider,\n  ReCaptchaEnterpriseProvider\n} from './providers';\n\n/**\n * Activate App Check for the given app. Can be called only once per app.\n * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for\n * @param options - App Check initialization options\n * @public\n */\nexport function initializeAppCheck(\n  app: FirebaseApp = getApp(),\n  options: AppCheckOptions\n): AppCheck {\n  app = getModularInstance(app);\n  const provider = _getProvider(app, 'app-check');\n\n  // Ensure initializeDebugMode() is only called once.\n  if (!getDebugState().initialized) {\n    initializeDebugMode();\n  }\n\n  // Log a message containing the debug token when `initializeAppCheck()`\n  // is called in debug mode.\n  if (isDebugMode()) {\n    // Do not block initialization to get the token for the message.\n    void getDebugToken().then(token =>\n      // Not using logger because I don't think we ever want this accidentally hidden.\n      console.log(\n        `App Check debug token: ${token}. You will need to add it to your app's App Check settings in the Firebase console for it to work.`\n      )\n    );\n  }\n\n  if (provider.isInitialized()) {\n    const existingInstance = provider.getImmediate();\n    const initialOptions = provider.getOptions() as unknown as AppCheckOptions;\n    if (\n      initialOptions.isTokenAutoRefreshEnabled ===\n        options.isTokenAutoRefreshEnabled &&\n      initialOptions.provider.isEqual(options.provider)\n    ) {\n      return existingInstance;\n    } else {\n      throw ERROR_FACTORY.create(AppCheckError.ALREADY_INITIALIZED, {\n        appName: app.name\n      });\n    }\n  }\n\n  const appCheck = provider.initialize({ options });\n  _activate(app, options.provider, options.isTokenAutoRefreshEnabled);\n  // If isTokenAutoRefreshEnabled is false, do not send any requests to the\n  // exchange endpoint without an explicit call from the user either directly\n  // or through another Firebase library (storage, functions, etc.)\n  if (getStateReference(app).isTokenAutoRefreshEnabled) {\n    // Adding a listener will start the refresher and fetch a token if needed.\n    // This gets a token ready and prevents a delay when an internal library\n    // requests the token.\n    // Listener function does not need to do anything, its base functionality\n    // of calling getToken() already fetches token and writes it to memory/storage.\n    addTokenListener(appCheck, ListenerType.INTERNAL, () => {});\n  }\n\n  return appCheck;\n}\n\n/**\n * Activate App Check\n * @param app - Firebase app to activate App Check for.\n * @param provider - reCAPTCHA v3 provider or\n * custom token provider.\n * @param isTokenAutoRefreshEnabled - If true, the SDK automatically\n * refreshes App Check tokens as needed. If undefined, defaults to the\n * value of `app.automaticDataCollectionEnabled`, which defaults to\n * false and can be set in the app config.\n */\nfunction _activate(\n  app: FirebaseApp,\n  provider: AppCheckProvider,\n  isTokenAutoRefreshEnabled: boolean = false\n): void {\n  // Create an entry in the APP_CHECK_STATES map. Further changes should\n  // directly mutate this object.\n  const state = setInitialState(app, { ...DEFAULT_STATE });\n\n  state.activated = true;\n  state.provider = provider; // Read cached token from storage if it exists and store it in memory.\n  state.cachedTokenPromise = readTokenFromStorage(app).then(cachedToken => {\n    if (cachedToken && isValid(cachedToken)) {\n      state.token = cachedToken;\n      // notify all listeners with the cached token\n      notifyTokenListeners(app, { token: cachedToken.token });\n    }\n    return cachedToken;\n  });\n\n  // Global `automaticDataCollectionEnabled` (defaults to true) and\n  // `isTokenAutoRefreshEnabled` must both be true.\n  state.isTokenAutoRefreshEnabled =\n    isTokenAutoRefreshEnabled && app.automaticDataCollectionEnabled;\n\n  if (!app.automaticDataCollectionEnabled && isTokenAutoRefreshEnabled) {\n    logger.warn(\n      '`isTokenAutoRefreshEnabled` is true but ' +\n        '`automaticDataCollectionEnabled` was set to false during' +\n        ' `initializeApp()`. This blocks automatic token refresh.'\n    );\n  }\n\n  state.provider.initialize(app);\n}\n\n/**\n * Set whether App Check will automatically refresh tokens as needed.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param isTokenAutoRefreshEnabled - If true, the SDK automatically\n * refreshes App Check tokens as needed. This overrides any value set\n * during `initializeAppCheck()`.\n * @public\n */\nexport function setTokenAutoRefreshEnabled(\n  appCheckInstance: AppCheck,\n  isTokenAutoRefreshEnabled: boolean\n): void {\n  const app = appCheckInstance.app;\n  const state = getStateReference(app);\n  // This will exist if any product libraries have called\n  // `addTokenListener()`\n  if (state.tokenRefresher) {\n    if (isTokenAutoRefreshEnabled === true) {\n      state.tokenRefresher.start();\n    } else {\n      state.tokenRefresher.stop();\n    }\n  }\n  state.isTokenAutoRefreshEnabled = isTokenAutoRefreshEnabled;\n}\n/**\n * Get the current App Check token. If `forceRefresh` is false, this function first\n * checks for a valid token in memory, then local persistence (IndexedDB).\n * If not found, or if `forceRefresh` is true, it makes a request to the\n * App Check endpoint for a fresh token. That request attaches\n * to the most recent in-flight request if one is present.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param forceRefresh - If true, will always try to fetch a fresh token.\n * If false, will use a cached token if found in storage.\n * @public\n */\nexport async function getToken(\n  appCheckInstance: AppCheck,\n  forceRefresh?: boolean\n): Promise<AppCheckTokenResult> {\n  const result = await getTokenInternal(\n    appCheckInstance as AppCheckService,\n    forceRefresh\n  );\n  if (result.error) {\n    throw result.error;\n  }\n  if (result.internalError) {\n    throw result.internalError;\n  }\n  return { token: result.token };\n}\n\n/**\n * Requests a Firebase App Check token. This method should be used\n * only if you need to authorize requests to a non-Firebase backend.\n *\n * Returns limited-use tokens that are intended for use with your\n * non-Firebase backend endpoints that are protected with\n * <a href=\"https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection\">\n * Replay Protection</a>. This method\n * does not affect the token generation behavior of the\n * #getAppCheckToken() method.\n *\n * @param appCheckInstance - The App Check service instance.\n * @returns The limited use token.\n * @public\n */\nexport function getLimitedUseToken(\n  appCheckInstance: AppCheck\n): Promise<AppCheckTokenResult> {\n  return getLimitedUseTokenInternal(appCheckInstance as AppCheckService);\n}\n\n/**\n * Registers a listener to changes in the token state. There can be more\n * than one listener registered at the same time for one or more\n * App Check instances. The listeners call back on the UI thread whenever\n * the current token associated with this App Check instance changes.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param observer - An object with `next`, `error`, and `complete`\n * properties. `next` is called with an\n * {@link AppCheckTokenResult}\n * whenever the token changes. `error` is optional and is called if an\n * error is thrown by the listener (the `next` function). `complete`\n * is unused, as the token stream is unending.\n *\n * @returns A function that unsubscribes this listener.\n * @public\n */\nexport function onTokenChanged(\n  appCheckInstance: AppCheck,\n  observer: PartialObserver<AppCheckTokenResult>\n): Unsubscribe;\n/**\n * Registers a listener to changes in the token state. There can be more\n * than one listener registered at the same time for one or more\n * App Check instances. The listeners call back on the UI thread whenever\n * the current token associated with this App Check instance changes.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param onNext - When the token changes, this function is called with an\n * {@link AppCheckTokenResult}.\n * @param onError - Optional. Called if there is an error thrown by the\n * listener (the `onNext` function).\n * @param onCompletion - Currently unused, as the token stream is unending.\n * @returns A function that unsubscribes this listener.\n * @public\n */\nexport function onTokenChanged(\n  appCheckInstance: AppCheck,\n  onNext: (tokenResult: AppCheckTokenResult) => void,\n  onError?: (error: Error) => void,\n  onCompletion?: () => void\n): Unsubscribe;\n/**\n * Wraps `addTokenListener`/`removeTokenListener` methods in an `Observer`\n * pattern for public use.\n */\nexport function onTokenChanged(\n  appCheckInstance: AppCheck,\n  onNextOrObserver:\n    | ((tokenResult: AppCheckTokenResult) => void)\n    | PartialObserver<AppCheckTokenResult>,\n  onError?: (error: Error) => void,\n  /**\n   * NOTE: Although an `onCompletion` callback can be provided, it will\n   * never be called because the token stream is never-ending.\n   * It is added only for API consistency with the observer pattern, which\n   * we follow in JS APIs.\n   */\n  // eslint-disable-next-line @typescript-eslint/no-unused-vars\n  onCompletion?: () => void\n): Unsubscribe {\n  let nextFn: NextFn<AppCheckTokenResult> = () => {};\n  let errorFn: ErrorFn = () => {};\n  if ((onNextOrObserver as PartialObserver<AppCheckTokenResult>).next != null) {\n    nextFn = (\n      onNextOrObserver as PartialObserver<AppCheckTokenResult>\n    ).next!.bind(onNextOrObserver);\n  } else {\n    nextFn = onNextOrObserver as NextFn<AppCheckTokenResult>;\n  }\n  if (\n    (onNextOrObserver as PartialObserver<AppCheckTokenResult>).error != null\n  ) {\n    errorFn = (\n      onNextOrObserver as PartialObserver<AppCheckTokenResult>\n    ).error!.bind(onNextOrObserver);\n  } else if (onError) {\n    errorFn = onError;\n  }\n  addTokenListener(\n    appCheckInstance as AppCheckService,\n    ListenerType.EXTERNAL,\n    nextFn,\n    errorFn\n  );\n  return () => removeTokenListener(appCheckInstance.app, nextFn);\n}\n","/**\n * The Firebase App Check Web SDK.\n *\n * @remarks\n * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or\n * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use\n * `CustomProvider` and write your own attestation method.\n *\n * @packageDocumentation\n */\n\n/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { registerVersion, _registerComponent } from '@firebase/app';\nimport {\n  Component,\n  ComponentType,\n  InstantiationMode\n} from '@firebase/component';\nimport { _AppCheckComponentName } from './public-types';\nimport { factory, internalFactory } from './factory';\nimport { _AppCheckInternalComponentName } from './types';\nimport { name, version } from '../package.json';\n\n// Used by other Firebase packages.\nexport { _AppCheckInternalComponentName };\n\nexport * from './api';\nexport * from './public-types';\n\nconst APP_CHECK_NAME: _AppCheckComponentName = 'app-check';\nconst APP_CHECK_NAME_INTERNAL: _AppCheckInternalComponentName =\n  'app-check-internal';\nfunction registerAppCheck(): void {\n  // The public interface\n  _registerComponent(\n    new Component(\n      APP_CHECK_NAME,\n      container => {\n        // getImmediate for FirebaseApp will always succeed\n        const app = container.getProvider('app').getImmediate();\n        const heartbeatServiceProvider = container.getProvider('heartbeat');\n        return factory(app, heartbeatServiceProvider);\n      },\n      ComponentType.PUBLIC\n    )\n      .setInstantiationMode(InstantiationMode.EXPLICIT)\n      /**\n       * Initialize app-check-internal after app-check is initialized to make AppCheck available to\n       * other Firebase SDKs\n       */\n      .setInstanceCreatedCallback(\n        (container, _identifier, _appcheckService) => {\n          container.getProvider(APP_CHECK_NAME_INTERNAL).initialize();\n        }\n      )\n  );\n\n  // The internal interface used by other Firebase products\n  _registerComponent(\n    new Component(\n      APP_CHECK_NAME_INTERNAL,\n      container => {\n        const appCheck = container.getProvider('app-check').getImmediate();\n        return internalFactory(appCheck);\n      },\n      ComponentType.PUBLIC\n    ).setInstantiationMode(InstantiationMode.EXPLICIT)\n  );\n\n  registerVersion(name, 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\ No newline at end of file
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/package.json b/frontend-old/node_modules/@firebase/app-check/dist/esm/package.json
new file mode 100644
index 0000000..7c34deb
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/package.json
@@ -0,0 +1 @@
+{"type":"module"}
\ No newline at end of file
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/api.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/api.d.ts
new file mode 100644
index 0000000..def58a8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/api.d.ts
@@ -0,0 +1,105 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AppCheck, AppCheckOptions, AppCheckTokenResult, Unsubscribe, PartialObserver } from './public-types';
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckService } from './factory';
+declare module '@firebase/component' {
+    interface NameServiceMapping {
+        'app-check': AppCheckService;
+    }
+}
+export { ReCaptchaV3Provider, CustomProvider, ReCaptchaEnterpriseProvider } from './providers';
+/**
+ * Activate App Check for the given app. Can be called only once per app.
+ * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for
+ * @param options - App Check initialization options
+ * @public
+ */
+export declare function initializeAppCheck(app: FirebaseApp | undefined, options: AppCheckOptions): AppCheck;
+/**
+ * Set whether App Check will automatically refresh tokens as needed.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. This overrides any value set
+ * during `initializeAppCheck()`.
+ * @public
+ */
+export declare function setTokenAutoRefreshEnabled(appCheckInstance: AppCheck, isTokenAutoRefreshEnabled: boolean): void;
+/**
+ * Get the current App Check token. If `forceRefresh` is false, this function first
+ * checks for a valid token in memory, then local persistence (IndexedDB).
+ * If not found, or if `forceRefresh` is true, it makes a request to the
+ * App Check endpoint for a fresh token. That request attaches
+ * to the most recent in-flight request if one is present.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param forceRefresh - If true, will always try to fetch a fresh token.
+ * If false, will use a cached token if found in storage.
+ * @public
+ */
+export declare function getToken(appCheckInstance: AppCheck, forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+/**
+ * Requests a Firebase App Check token. This method should be used
+ * only if you need to authorize requests to a non-Firebase backend.
+ *
+ * Returns limited-use tokens that are intended for use with your
+ * non-Firebase backend endpoints that are protected with
+ * <a href="https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection">
+ * Replay Protection</a>. This method
+ * does not affect the token generation behavior of the
+ * #getAppCheckToken() method.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @returns The limited use token.
+ * @public
+ */
+export declare function getLimitedUseToken(appCheckInstance: AppCheck): Promise<AppCheckTokenResult>;
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param observer - An object with `next`, `error`, and `complete`
+ * properties. `next` is called with an
+ * {@link AppCheckTokenResult}
+ * whenever the token changes. `error` is optional and is called if an
+ * error is thrown by the listener (the `next` function). `complete`
+ * is unused, as the token stream is unending.
+ *
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, observer: PartialObserver<AppCheckTokenResult>): Unsubscribe;
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param onNext - When the token changes, this function is called with an
+ * {@link AppCheckTokenResult}.
+ * @param onError - Optional. Called if there is an error thrown by the
+ * listener (the `onNext` function).
+ * @param onCompletion - Currently unused, as the token stream is unending.
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, onNext: (tokenResult: AppCheckTokenResult) => void, onError?: (error: Error) => void, onCompletion?: () => void): Unsubscribe;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/api.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/api.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/api.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/client.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/client.d.ts
new file mode 100644
index 0000000..d49e05c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/client.d.ts
@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { Provider } from '@firebase/component';
+import { AppCheckTokenInternal } from './types';
+interface AppCheckRequest {
+    url: string;
+    body: {
+        [key: string]: string;
+    };
+}
+export declare function exchangeToken({ url, body }: AppCheckRequest, heartbeatServiceProvider: Provider<'heartbeat'>): Promise<AppCheckTokenInternal>;
+export declare function getExchangeRecaptchaV3TokenRequest(app: FirebaseApp, reCAPTCHAToken: string): AppCheckRequest;
+export declare function getExchangeRecaptchaEnterpriseTokenRequest(app: FirebaseApp, reCAPTCHAToken: string): AppCheckRequest;
+export declare function getExchangeDebugTokenRequest(app: FirebaseApp, debugToken: string): AppCheckRequest;
+export {};
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/client.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/client.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/client.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/constants.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/constants.d.ts
new file mode 100644
index 0000000..2b1e3dc
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/constants.d.ts
@@ -0,0 +1,40 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export declare const BASE_ENDPOINT = "https://content-firebaseappcheck.googleapis.com/v1";
+export declare const EXCHANGE_RECAPTCHA_TOKEN_METHOD = "exchangeRecaptchaV3Token";
+export declare const EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD = "exchangeRecaptchaEnterpriseToken";
+export declare const EXCHANGE_DEBUG_TOKEN_METHOD = "exchangeDebugToken";
+export declare const TOKEN_REFRESH_TIME: {
+    /**
+     * The offset time before token natural expiration to run the refresh.
+     * This is currently 5 minutes.
+     */
+    OFFSET_DURATION: number;
+    /**
+     * This is the first retrial wait after an error. This is currently
+     * 30 seconds.
+     */
+    RETRIAL_MIN_WAIT: number;
+    /**
+     * This is the maximum retrial wait, currently 16 minutes.
+     */
+    RETRIAL_MAX_WAIT: number;
+};
+/**
+ * One day in millis, for certain error code backoffs.
+ */
+export declare const ONE_DAY: number;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/debug.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/debug.d.ts
new file mode 100644
index 0000000..c5abdf9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/debug.d.ts
@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+declare global {
+    var FIREBASE_APPCHECK_DEBUG_TOKEN: boolean | string | undefined;
+}
+export declare function isDebugMode(): boolean;
+export declare function getDebugToken(): Promise<string>;
+export declare function initializeDebugMode(): void;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/debug.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/debug.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/debug.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/errors.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/errors.d.ts
new file mode 100644
index 0000000..c9549d8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/errors.d.ts
@@ -0,0 +1,66 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ErrorFactory } from '@firebase/util';
+export declare const enum AppCheckError {
+    ALREADY_INITIALIZED = "already-initialized",
+    USE_BEFORE_ACTIVATION = "use-before-activation",
+    FETCH_NETWORK_ERROR = "fetch-network-error",
+    FETCH_PARSE_ERROR = "fetch-parse-error",
+    FETCH_STATUS_ERROR = "fetch-status-error",
+    STORAGE_OPEN = "storage-open",
+    STORAGE_GET = "storage-get",
+    STORAGE_WRITE = "storage-set",
+    RECAPTCHA_ERROR = "recaptcha-error",
+    INITIAL_THROTTLE = "initial-throttle",
+    THROTTLED = "throttled"
+}
+interface ErrorParams {
+    [AppCheckError.ALREADY_INITIALIZED]: {
+        appName: string;
+    };
+    [AppCheckError.USE_BEFORE_ACTIVATION]: {
+        appName: string;
+    };
+    [AppCheckError.FETCH_NETWORK_ERROR]: {
+        originalErrorMessage: string;
+    };
+    [AppCheckError.FETCH_PARSE_ERROR]: {
+        originalErrorMessage: string;
+    };
+    [AppCheckError.FETCH_STATUS_ERROR]: {
+        httpStatus: number;
+    };
+    [AppCheckError.STORAGE_OPEN]: {
+        originalErrorMessage?: string;
+    };
+    [AppCheckError.STORAGE_GET]: {
+        originalErrorMessage?: string;
+    };
+    [AppCheckError.STORAGE_WRITE]: {
+        originalErrorMessage?: string;
+    };
+    [AppCheckError.INITIAL_THROTTLE]: {
+        time: string;
+        httpStatus: number;
+    };
+    [AppCheckError.THROTTLED]: {
+        time: string;
+        httpStatus: number;
+    };
+}
+export declare const ERROR_FACTORY: ErrorFactory<AppCheckError, ErrorParams>;
+export {};
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/factory.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/factory.d.ts
new file mode 100644
index 0000000..805f982
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/factory.d.ts
@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AppCheck } from './public-types';
+import { FirebaseApp, _FirebaseService } from '@firebase/app';
+import { FirebaseAppCheckInternal } from './types';
+import { Provider } from '@firebase/component';
+/**
+ * AppCheck Service class.
+ */
+export declare class AppCheckService implements AppCheck, _FirebaseService {
+    app: FirebaseApp;
+    heartbeatServiceProvider: Provider<'heartbeat'>;
+    constructor(app: FirebaseApp, heartbeatServiceProvider: Provider<'heartbeat'>);
+    _delete(): Promise<void>;
+}
+export declare function factory(app: FirebaseApp, heartbeatServiceProvider: Provider<'heartbeat'>): AppCheckService;
+export declare function internalFactory(appCheck: AppCheckService): FirebaseAppCheckInternal;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/index.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/index.d.ts
new file mode 100644
index 0000000..2d51c62
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/index.d.ts
@@ -0,0 +1,14 @@
+/**
+ * The Firebase App Check Web SDK.
+ *
+ * @remarks
+ * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or
+ * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use
+ * `CustomProvider` and write your own attestation method.
+ *
+ * @packageDocumentation
+ */
+import { _AppCheckInternalComponentName } from './types';
+export { _AppCheckInternalComponentName };
+export * from './api';
+export * from './public-types';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/indexeddb.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/indexeddb.d.ts
new file mode 100644
index 0000000..b6942da
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/indexeddb.d.ts
@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckTokenInternal } from './types';
+export declare function readTokenFromIndexedDB(app: FirebaseApp): Promise<AppCheckTokenInternal | undefined>;
+export declare function writeTokenToIndexedDB(app: FirebaseApp, token?: AppCheckTokenInternal): Promise<void>;
+export declare function writeDebugTokenToIndexedDB(token: string): Promise<void>;
+export declare function readDebugTokenFromIndexedDB(): Promise<string | undefined>;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/internal-api.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/internal-api.d.ts
new file mode 100644
index 0000000..a4f5fe3
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/internal-api.d.ts
@@ -0,0 +1,44 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckTokenResult, AppCheckTokenInternal, ListenerType } from './types';
+import { AppCheckTokenListener } from './public-types';
+import { AppCheckService } from './factory';
+export declare const defaultTokenErrorData: {
+    error: string;
+};
+/**
+ * Stringify and base64 encode token error data.
+ *
+ * @param tokenError Error data, currently hardcoded.
+ */
+export declare function formatDummyToken(tokenErrorData: Record<string, string>): string;
+/**
+ * This function always resolves.
+ * The result will contain an error field if there is any error.
+ * In case there is an error, the token field in the result will be populated with a dummy value
+ */
+export declare function getToken(appCheck: AppCheckService, forceRefresh?: boolean, shouldLogErrors?: boolean): Promise<AppCheckTokenResult>;
+/**
+ * Internal API for limited use tokens. Skips all FAC state and simply calls
+ * the underlying provider.
+ */
+export declare function getLimitedUseToken(appCheck: AppCheckService): Promise<AppCheckTokenResult>;
+export declare function addTokenListener(appCheck: AppCheckService, type: ListenerType, listener: AppCheckTokenListener, onError?: (error: Error) => void): void;
+export declare function removeTokenListener(app: FirebaseApp, listener: AppCheckTokenListener): void;
+export declare function notifyTokenListeners(app: FirebaseApp, token: AppCheckTokenResult): void;
+export declare function isValid(token: AppCheckTokenInternal): boolean;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/internal-api.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/internal-api.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/internal-api.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/logger.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/logger.d.ts
new file mode 100644
index 0000000..bfd6d07
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/logger.d.ts
@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Logger } from '@firebase/logger';
+export declare const logger: Logger;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/proactive-refresh.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/proactive-refresh.d.ts
new file mode 100644
index 0000000..d90731c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/proactive-refresh.d.ts
@@ -0,0 +1,35 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Port from auth proactiverefresh.js
+ *
+ */
+export declare class Refresher {
+    private readonly operation;
+    private readonly retryPolicy;
+    private readonly getWaitDuration;
+    private readonly lowerBound;
+    private readonly upperBound;
+    private pending;
+    private nextErrorWaitInterval;
+    constructor(operation: () => Promise<unknown>, retryPolicy: (error: unknown) => boolean, getWaitDuration: () => number, lowerBound: number, upperBound: number);
+    start(): void;
+    stop(): void;
+    isRunning(): boolean;
+    private process;
+    private getNextRun;
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/proactive-refresh.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/proactive-refresh.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/proactive-refresh.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/providers.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/providers.d.ts
new file mode 100644
index 0000000..787cea7
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/providers.d.ts
@@ -0,0 +1,108 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { CustomProviderOptions } from './public-types';
+import { AppCheckProvider, AppCheckTokenInternal } from './types';
+/**
+ * App Check provider that can obtain a reCAPTCHA V3 token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaV3Provider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaV3Provider instance.
+     * @param siteKey - ReCAPTCHA V3 siteKey.
+     */
+    constructor(_siteKey: string);
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+/**
+ * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaEnterpriseProvider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaEnterpriseProvider instance.
+     * @param siteKey - reCAPTCHA Enterprise score-based site key.
+     */
+    constructor(_siteKey: string);
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+/**
+ * Custom provider class.
+ * @public
+ */
+export declare class CustomProvider implements AppCheckProvider {
+    private _customProviderOptions;
+    private _app?;
+    constructor(_customProviderOptions: CustomProviderOptions);
+    /**
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/providers.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/providers.test.d.ts
new file mode 100644
index 0000000..c5efdd9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/providers.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/public-types.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/public-types.d.ts
new file mode 100644
index 0000000..0fe5708
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/public-types.d.ts
@@ -0,0 +1,85 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { CustomProvider, ReCaptchaEnterpriseProvider, ReCaptchaV3Provider } from './providers';
+export { Unsubscribe, PartialObserver } from '@firebase/util';
+/**
+ * The Firebase App Check service interface.
+ *
+ * @public
+ */
+export interface AppCheck {
+    /**
+     * The {@link @firebase/app#FirebaseApp} this `AppCheck` instance is associated with.
+     */
+    app: FirebaseApp;
+}
+/**
+ * The token returned from an App Check provider.
+ * @public
+ */
+export interface AppCheckToken {
+    readonly token: string;
+    /**
+     * The local timestamp after which the token will expire.
+     */
+    readonly expireTimeMillis: number;
+}
+/**
+ * @internal
+ */
+export type _AppCheckComponentName = 'app-check';
+/**
+ * Options for App Check initialization.
+ * @public
+ */
+export interface AppCheckOptions {
+    /**
+     * A reCAPTCHA V3 provider, reCAPTCHA Enterprise provider, or custom provider.
+     */
+    provider: CustomProvider | ReCaptchaV3Provider | ReCaptchaEnterpriseProvider;
+    /**
+     * If set to true, enables automatic background refresh of App Check token.
+     */
+    isTokenAutoRefreshEnabled?: boolean;
+}
+/**
+ * Options when creating a {@link CustomProvider}.
+ * @public
+ */
+export interface CustomProviderOptions {
+    /**
+     * Function to get an App Check token through a custom provider
+     * service.
+     */
+    getToken: () => Promise<AppCheckToken>;
+}
+/**
+ * Result returned by `getToken()`.
+ * @public
+ */
+export interface AppCheckTokenResult {
+    /**
+     * The token string in JWT format.
+     */
+    readonly token: string;
+}
+/**
+ * A listener that is called whenever the App Check token changes.
+ * @public
+ */
+export type AppCheckTokenListener = (token: AppCheckTokenResult) => void;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/recaptcha.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/recaptcha.d.ts
new file mode 100644
index 0000000..22a51d2
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/recaptcha.d.ts
@@ -0,0 +1,43 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+export declare const RECAPTCHA_URL = "https://www.google.com/recaptcha/api.js";
+export declare const RECAPTCHA_ENTERPRISE_URL = "https://www.google.com/recaptcha/enterprise.js";
+export declare function initializeV3(app: FirebaseApp, siteKey: string): Promise<GreCAPTCHA>;
+export declare function initializeEnterprise(app: FirebaseApp, siteKey: string): Promise<GreCAPTCHA>;
+export declare function getToken(app: FirebaseApp): Promise<string>;
+declare global {
+    interface Window {
+        grecaptcha: GreCAPTCHATopLevel | undefined;
+    }
+}
+export interface GreCAPTCHATopLevel extends GreCAPTCHA {
+    enterprise: GreCAPTCHA;
+}
+export interface GreCAPTCHA {
+    ready: (callback: () => void) => void;
+    execute: (siteKey: string, options: {
+        action: string;
+    }) => Promise<string>;
+    render: (container: string | HTMLElement, parameters: GreCAPTCHARenderOption) => string;
+}
+export interface GreCAPTCHARenderOption {
+    sitekey: string;
+    size: 'invisible';
+    callback: () => void;
+    'error-callback': () => void;
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/recaptcha.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/recaptcha.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/recaptcha.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/state.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/state.d.ts
new file mode 100644
index 0000000..698374b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/state.d.ts
@@ -0,0 +1,54 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckProvider, AppCheckTokenInternal, AppCheckTokenObserver } from './types';
+import { Refresher } from './proactive-refresh';
+import { Deferred } from '@firebase/util';
+import { GreCAPTCHA } from './recaptcha';
+export interface AppCheckState {
+    activated: boolean;
+    tokenObservers: AppCheckTokenObserver[];
+    provider?: AppCheckProvider;
+    token?: AppCheckTokenInternal;
+    cachedTokenPromise?: Promise<AppCheckTokenInternal | undefined>;
+    exchangeTokenPromise?: Promise<AppCheckTokenInternal>;
+    tokenRefresher?: Refresher;
+    reCAPTCHAState?: ReCAPTCHAState;
+    isTokenAutoRefreshEnabled?: boolean;
+}
+export interface ReCAPTCHAState {
+    initialized: Deferred<GreCAPTCHA>;
+    widgetId?: string;
+    succeeded?: boolean;
+}
+export interface DebugState {
+    initialized: boolean;
+    enabled: boolean;
+    token?: Deferred<string>;
+}
+export declare const DEFAULT_STATE: AppCheckState;
+/**
+ * Gets a reference to the state object.
+ */
+export declare function getStateReference(app: FirebaseApp): AppCheckState;
+/**
+ * Set once on initialization. The map should hold the same reference to the
+ * same object until this entry is deleted.
+ */
+export declare function setInitialState(app: FirebaseApp, state: AppCheckState): AppCheckState;
+export declare function clearState(): void;
+export declare function getDebugState(): DebugState;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/storage.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/storage.d.ts
new file mode 100644
index 0000000..b1dfd96
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/storage.d.ts
@@ -0,0 +1,27 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckTokenInternal } from './types';
+/**
+ * Always resolves. In case of an error reading from indexeddb, resolve with undefined
+ */
+export declare function readTokenFromStorage(app: FirebaseApp): Promise<AppCheckTokenInternal | undefined>;
+/**
+ * Always resolves. In case of an error writing to indexeddb, print a warning and resolve the promise
+ */
+export declare function writeTokenToStorage(app: FirebaseApp, token?: AppCheckTokenInternal): Promise<void>;
+export declare function readOrCreateDebugTokenFromStorage(): Promise<string>;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/storage.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/storage.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/storage.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/types.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/types.d.ts
new file mode 100644
index 0000000..e1b916c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/types.d.ts
@@ -0,0 +1,66 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { PartialObserver } from '@firebase/util';
+import { AppCheckToken, AppCheckTokenListener } from './public-types';
+export interface FirebaseAppCheckInternal {
+    getToken(forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+    getLimitedUseToken(): Promise<AppCheckTokenResult>;
+    addTokenListener(listener: AppCheckTokenListener): void;
+    removeTokenListener(listener: AppCheckTokenListener): void;
+}
+export interface AppCheckTokenObserver extends PartialObserver<AppCheckTokenResult> {
+    next: AppCheckTokenListener;
+    type: ListenerType;
+}
+export declare const enum ListenerType {
+    'INTERNAL' = "INTERNAL",
+    'EXTERNAL' = "EXTERNAL"
+}
+export interface AppCheckTokenResult {
+    readonly token: string;
+    readonly error?: Error;
+    readonly internalError?: Error;
+}
+export interface AppCheckTokenInternal extends AppCheckToken {
+    issuedAtTimeMillis: number;
+}
+export interface AppCheckProvider {
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken: () => Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+}
+/**
+ * @internal
+ */
+export type _AppCheckInternalComponentName = 'app-check-internal';
+export interface ThrottleData {
+    allowRequestsAfter: number;
+    backoffCount: number;
+    httpStatus: number;
+}
+declare module '@firebase/component' {
+    interface NameServiceMapping {
+        'app-check-internal': FirebaseAppCheckInternal;
+    }
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/src/util.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/util.d.ts
new file mode 100644
index 0000000..29cc2e3
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/src/util.d.ts
@@ -0,0 +1,21 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { GreCAPTCHA } from './recaptcha';
+import { FirebaseApp } from '@firebase/app';
+export declare function getRecaptcha(isEnterprise?: boolean): GreCAPTCHA | undefined;
+export declare function ensureActivated(app: FirebaseApp): void;
+export declare function getDurationString(durationInMillis: number): string;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/test/setup.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/test/setup.d.ts
new file mode 100644
index 0000000..731d2d9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/test/setup.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export {};
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/esm/test/util.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/esm/test/util.d.ts
new file mode 100644
index 0000000..3590096
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/esm/test/util.d.ts
@@ -0,0 +1,34 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { GreCAPTCHA, GreCAPTCHATopLevel } from '../src/recaptcha';
+import { Provider } from '@firebase/component';
+import { AppCheck, CustomProvider } from '../src';
+export declare const FAKE_SITE_KEY = "fake-site-key";
+export declare function getFakeApp(overrides?: Record<string, any>): FirebaseApp;
+export declare function getFakeAppCheck(app: FirebaseApp): AppCheck;
+export declare function getFullApp(): FirebaseApp;
+export declare function getFakeCustomTokenProvider(): CustomProvider;
+export declare function getFakeHeartbeatServiceProvider(fakeLogString?: string): Provider<'heartbeat'>;
+export declare function getFakeGreCAPTCHA(isTopLevel?: boolean): GreCAPTCHATopLevel | GreCAPTCHA;
+/**
+ * Returns all script tags in DOM matching our reCAPTCHA url pattern.
+ * Tests in other files may have inserted multiple reCAPTCHA scripts, because they don't
+ * care about it.
+ */
+export declare function findgreCAPTCHAScriptsOnPage(): HTMLScriptElement[];
+export declare function removegreCAPTCHAScriptsOnPage(): void;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/index.cjs.js b/frontend-old/node_modules/@firebase/app-check/dist/index.cjs.js
new file mode 100644
index 0000000..340b411
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/index.cjs.js
@@ -0,0 +1,1704 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var app = require('@firebase/app');
+var component = require('@firebase/component');
+var util = require('@firebase/util');
+var logger$1 = require('@firebase/logger');
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const APP_CHECK_STATES = new Map();
+const DEFAULT_STATE = {
+    activated: false,
+    tokenObservers: []
+};
+const DEBUG_STATE = {
+    initialized: false,
+    enabled: false
+};
+/**
+ * Gets a reference to the state object.
+ */
+function getStateReference(app) {
+    return APP_CHECK_STATES.get(app) || { ...DEFAULT_STATE };
+}
+/**
+ * Set once on initialization. The map should hold the same reference to the
+ * same object until this entry is deleted.
+ */
+function setInitialState(app, state) {
+    APP_CHECK_STATES.set(app, state);
+    return APP_CHECK_STATES.get(app);
+}
+function getDebugState() {
+    return DEBUG_STATE;
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const BASE_ENDPOINT = 'https://content-firebaseappcheck.googleapis.com/v1';
+const EXCHANGE_RECAPTCHA_TOKEN_METHOD = 'exchangeRecaptchaV3Token';
+const EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD = 'exchangeRecaptchaEnterpriseToken';
+const EXCHANGE_DEBUG_TOKEN_METHOD = 'exchangeDebugToken';
+const TOKEN_REFRESH_TIME = {
+    /**
+     * The offset time before token natural expiration to run the refresh.
+     * This is currently 5 minutes.
+     */
+    OFFSET_DURATION: 5 * 60 * 1000,
+    /**
+     * This is the first retrial wait after an error. This is currently
+     * 30 seconds.
+     */
+    RETRIAL_MIN_WAIT: 30 * 1000,
+    /**
+     * This is the maximum retrial wait, currently 16 minutes.
+     */
+    RETRIAL_MAX_WAIT: 16 * 60 * 1000
+};
+/**
+ * One day in millis, for certain error code backoffs.
+ */
+const ONE_DAY = 24 * 60 * 60 * 1000;
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Port from auth proactiverefresh.js
+ *
+ */
+// TODO: move it to @firebase/util?
+// TODO: allow to config whether refresh should happen in the background
+class Refresher {
+    constructor(operation, retryPolicy, getWaitDuration, lowerBound, upperBound) {
+        this.operation = operation;
+        this.retryPolicy = retryPolicy;
+        this.getWaitDuration = getWaitDuration;
+        this.lowerBound = lowerBound;
+        this.upperBound = upperBound;
+        this.pending = null;
+        this.nextErrorWaitInterval = lowerBound;
+        if (lowerBound > upperBound) {
+            throw new Error('Proactive refresh lower bound greater than upper bound!');
+        }
+    }
+    start() {
+        this.nextErrorWaitInterval = this.lowerBound;
+        this.process(true).catch(() => {
+            /* we don't care about the result */
+        });
+    }
+    stop() {
+        if (this.pending) {
+            this.pending.reject('cancelled');
+            this.pending = null;
+        }
+    }
+    isRunning() {
+        return !!this.pending;
+    }
+    async process(hasSucceeded) {
+        this.stop();
+        try {
+            this.pending = new util.Deferred();
+            this.pending.promise.catch(_e => {
+                /* ignore */
+            });
+            await sleep(this.getNextRun(hasSucceeded));
+            // Why do we resolve a promise, then immediate wait for it?
+            // We do it to make the promise chain cancellable.
+            // We can call stop() which rejects the promise before the following line execute, which makes
+            // the code jump to the catch block.
+            // TODO: unit test this
+            this.pending.resolve();
+            await this.pending.promise;
+            this.pending = new util.Deferred();
+            this.pending.promise.catch(_e => {
+                /* ignore */
+            });
+            await this.operation();
+            this.pending.resolve();
+            await this.pending.promise;
+            this.process(true).catch(() => {
+                /* we don't care about the result */
+            });
+        }
+        catch (error) {
+            if (this.retryPolicy(error)) {
+                this.process(false).catch(() => {
+                    /* we don't care about the result */
+                });
+            }
+            else {
+                this.stop();
+            }
+        }
+    }
+    getNextRun(hasSucceeded) {
+        if (hasSucceeded) {
+            // If last operation succeeded, reset next error wait interval and return
+            // the default wait duration.
+            this.nextErrorWaitInterval = this.lowerBound;
+            // Return typical wait duration interval after a successful operation.
+            return this.getWaitDuration();
+        }
+        else {
+            // Get next error wait interval.
+            const currentErrorWaitInterval = this.nextErrorWaitInterval;
+            // Double interval for next consecutive error.
+            this.nextErrorWaitInterval *= 2;
+            // Make sure next wait interval does not exceed the maximum upper bound.
+            if (this.nextErrorWaitInterval > this.upperBound) {
+                this.nextErrorWaitInterval = this.upperBound;
+            }
+            return currentErrorWaitInterval;
+        }
+    }
+}
+function sleep(ms) {
+    return new Promise(resolve => {
+        setTimeout(resolve, ms);
+    });
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const ERRORS = {
+    ["already-initialized" /* AppCheckError.ALREADY_INITIALIZED */]: 'You have already called initializeAppCheck() for FirebaseApp {$appName} with ' +
+        'different options. To avoid this error, call initializeAppCheck() with the ' +
+        'same options as when it was originally called. This will return the ' +
+        'already initialized instance.',
+    ["use-before-activation" /* AppCheckError.USE_BEFORE_ACTIVATION */]: 'App Check is being used before initializeAppCheck() is called for FirebaseApp {$appName}. ' +
+        'Call initializeAppCheck() before instantiating other Firebase services.',
+    ["fetch-network-error" /* AppCheckError.FETCH_NETWORK_ERROR */]: 'Fetch failed to connect to a network. Check Internet connection. ' +
+        'Original error: {$originalErrorMessage}.',
+    ["fetch-parse-error" /* AppCheckError.FETCH_PARSE_ERROR */]: 'Fetch client could not parse response.' +
+        ' Original error: {$originalErrorMessage}.',
+    ["fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */]: 'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',
+    ["storage-open" /* AppCheckError.STORAGE_OPEN */]: 'Error thrown when opening storage. Original error: {$originalErrorMessage}.',
+    ["storage-get" /* AppCheckError.STORAGE_GET */]: 'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',
+    ["storage-set" /* AppCheckError.STORAGE_WRITE */]: 'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',
+    ["recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */]: 'ReCAPTCHA error.',
+    ["initial-throttle" /* AppCheckError.INITIAL_THROTTLE */]: `{$httpStatus} error. Attempts allowed again after {$time}`,
+    ["throttled" /* AppCheckError.THROTTLED */]: `Requests throttled due to previous {$httpStatus} error. Attempts allowed again after {$time}`
+};
+const ERROR_FACTORY = new util.ErrorFactory('appCheck', 'AppCheck', ERRORS);
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+function getRecaptcha(isEnterprise = false) {
+    if (isEnterprise) {
+        return self.grecaptcha?.enterprise;
+    }
+    return self.grecaptcha;
+}
+function ensureActivated(app) {
+    if (!getStateReference(app).activated) {
+        throw ERROR_FACTORY.create("use-before-activation" /* AppCheckError.USE_BEFORE_ACTIVATION */, {
+            appName: app.name
+        });
+    }
+}
+function getDurationString(durationInMillis) {
+    const totalSeconds = Math.round(durationInMillis / 1000);
+    const days = Math.floor(totalSeconds / (3600 * 24));
+    const hours = Math.floor((totalSeconds - days * 3600 * 24) / 3600);
+    const minutes = Math.floor((totalSeconds - days * 3600 * 24 - hours * 3600) / 60);
+    const seconds = totalSeconds - days * 3600 * 24 - hours * 3600 - minutes * 60;
+    let result = '';
+    if (days) {
+        result += pad(days) + 'd:';
+    }
+    if (hours) {
+        result += pad(hours) + 'h:';
+    }
+    result += pad(minutes) + 'm:' + pad(seconds) + 's';
+    return result;
+}
+function pad(value) {
+    if (value === 0) {
+        return '00';
+    }
+    return value >= 10 ? value.toString() : '0' + value;
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+async function exchangeToken({ url, body }, heartbeatServiceProvider) {
+    const headers = {
+        'Content-Type': 'application/json'
+    };
+    // If heartbeat service exists, add heartbeat header string to the header.
+    const heartbeatService = heartbeatServiceProvider.getImmediate({
+        optional: true
+    });
+    if (heartbeatService) {
+        const heartbeatsHeader = await heartbeatService.getHeartbeatsHeader();
+        if (heartbeatsHeader) {
+            headers['X-Firebase-Client'] = heartbeatsHeader;
+        }
+    }
+    const options = {
+        method: 'POST',
+        body: JSON.stringify(body),
+        headers
+    };
+    let response;
+    try {
+        response = await fetch(url, options);
+    }
+    catch (originalError) {
+        throw ERROR_FACTORY.create("fetch-network-error" /* AppCheckError.FETCH_NETWORK_ERROR */, {
+            originalErrorMessage: originalError?.message
+        });
+    }
+    if (response.status !== 200) {
+        throw ERROR_FACTORY.create("fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */, {
+            httpStatus: response.status
+        });
+    }
+    let responseBody;
+    try {
+        // JSON parsing throws SyntaxError if the response body isn't a JSON string.
+        responseBody = await response.json();
+    }
+    catch (originalError) {
+        throw ERROR_FACTORY.create("fetch-parse-error" /* AppCheckError.FETCH_PARSE_ERROR */, {
+            originalErrorMessage: originalError?.message
+        });
+    }
+    // Protobuf duration format.
+    // https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/Duration
+    const match = responseBody.ttl.match(/^([\d.]+)(s)$/);
+    if (!match || !match[2] || isNaN(Number(match[1]))) {
+        throw ERROR_FACTORY.create("fetch-parse-error" /* AppCheckError.FETCH_PARSE_ERROR */, {
+            originalErrorMessage: `ttl field (timeToLive) is not in standard Protobuf Duration ` +
+                `format: ${responseBody.ttl}`
+        });
+    }
+    const timeToLiveAsNumber = Number(match[1]) * 1000;
+    const now = Date.now();
+    return {
+        token: responseBody.token,
+        expireTimeMillis: now + timeToLiveAsNumber,
+        issuedAtTimeMillis: now
+    };
+}
+function getExchangeRecaptchaV3TokenRequest(app, reCAPTCHAToken) {
+    const { projectId, appId, apiKey } = app.options;
+    return {
+        url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_TOKEN_METHOD}?key=${apiKey}`,
+        body: {
+            'recaptcha_v3_token': reCAPTCHAToken
+        }
+    };
+}
+function getExchangeRecaptchaEnterpriseTokenRequest(app, reCAPTCHAToken) {
+    const { projectId, appId, apiKey } = app.options;
+    return {
+        url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD}?key=${apiKey}`,
+        body: {
+            'recaptcha_enterprise_token': reCAPTCHAToken
+        }
+    };
+}
+function getExchangeDebugTokenRequest(app, debugToken) {
+    const { projectId, appId, apiKey } = app.options;
+    return {
+        url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_DEBUG_TOKEN_METHOD}?key=${apiKey}`,
+        body: {
+            // eslint-disable-next-line
+            debug_token: debugToken
+        }
+    };
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const DB_NAME = 'firebase-app-check-database';
+const DB_VERSION = 1;
+const STORE_NAME = 'firebase-app-check-store';
+const DEBUG_TOKEN_KEY = 'debug-token';
+let dbPromise = null;
+function getDBPromise() {
+    if (dbPromise) {
+        return dbPromise;
+    }
+    dbPromise = new Promise((resolve, reject) => {
+        try {
+            const request = indexedDB.open(DB_NAME, DB_VERSION);
+            request.onsuccess = event => {
+                resolve(event.target.result);
+            };
+            request.onerror = event => {
+                reject(ERROR_FACTORY.create("storage-open" /* AppCheckError.STORAGE_OPEN */, {
+                    originalErrorMessage: event.target.error?.message
+                }));
+            };
+            request.onupgradeneeded = event => {
+                const db = event.target.result;
+                // We don't use 'break' in this switch statement, the fall-through
+                // behavior is what we want, because if there are multiple versions between
+                // the old version and the current version, we want ALL the migrations
+                // that correspond to those versions to run, not only the last one.
+                // eslint-disable-next-line default-case
+                switch (event.oldVersion) {
+                    case 0:
+                        db.createObjectStore(STORE_NAME, {
+                            keyPath: 'compositeKey'
+                        });
+                }
+            };
+        }
+        catch (e) {
+            reject(ERROR_FACTORY.create("storage-open" /* AppCheckError.STORAGE_OPEN */, {
+                originalErrorMessage: e?.message
+            }));
+        }
+    });
+    return dbPromise;
+}
+function readTokenFromIndexedDB(app) {
+    return read(computeKey(app));
+}
+function writeTokenToIndexedDB(app, token) {
+    return write(computeKey(app), token);
+}
+function writeDebugTokenToIndexedDB(token) {
+    return write(DEBUG_TOKEN_KEY, token);
+}
+function readDebugTokenFromIndexedDB() {
+    return read(DEBUG_TOKEN_KEY);
+}
+async function write(key, value) {
+    const db = await getDBPromise();
+    const transaction = db.transaction(STORE_NAME, 'readwrite');
+    const store = transaction.objectStore(STORE_NAME);
+    const request = store.put({
+        compositeKey: key,
+        value
+    });
+    return new Promise((resolve, reject) => {
+        request.onsuccess = _event => {
+            resolve();
+        };
+        transaction.onerror = event => {
+            reject(ERROR_FACTORY.create("storage-set" /* AppCheckError.STORAGE_WRITE */, {
+                originalErrorMessage: event.target.error?.message
+            }));
+        };
+    });
+}
+async function read(key) {
+    const db = await getDBPromise();
+    const transaction = db.transaction(STORE_NAME, 'readonly');
+    const store = transaction.objectStore(STORE_NAME);
+    const request = store.get(key);
+    return new Promise((resolve, reject) => {
+        request.onsuccess = event => {
+            const result = event.target.result;
+            if (result) {
+                resolve(result.value);
+            }
+            else {
+                resolve(undefined);
+            }
+        };
+        transaction.onerror = event => {
+            reject(ERROR_FACTORY.create("storage-get" /* AppCheckError.STORAGE_GET */, {
+                originalErrorMessage: event.target.error?.message
+            }));
+        };
+    });
+}
+function computeKey(app) {
+    return `${app.options.appId}-${app.name}`;
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const logger = new logger$1.Logger('@firebase/app-check');
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Always resolves. In case of an error reading from indexeddb, resolve with undefined
+ */
+async function readTokenFromStorage(app) {
+    if (util.isIndexedDBAvailable()) {
+        let token = undefined;
+        try {
+            token = await readTokenFromIndexedDB(app);
+        }
+        catch (e) {
+            // swallow the error and return undefined
+            logger.warn(`Failed to read token from IndexedDB. Error: ${e}`);
+        }
+        return token;
+    }
+    return undefined;
+}
+/**
+ * Always resolves. In case of an error writing to indexeddb, print a warning and resolve the promise
+ */
+function writeTokenToStorage(app, token) {
+    if (util.isIndexedDBAvailable()) {
+        return writeTokenToIndexedDB(app, token).catch(e => {
+            // swallow the error and resolve the promise
+            logger.warn(`Failed to write token to IndexedDB. Error: ${e}`);
+        });
+    }
+    return Promise.resolve();
+}
+async function readOrCreateDebugTokenFromStorage() {
+    /**
+     * Theoretically race condition can happen if we read, then write in 2 separate transactions.
+     * But it won't happen here, because this function will be called exactly once.
+     */
+    let existingDebugToken = undefined;
+    try {
+        existingDebugToken = await readDebugTokenFromIndexedDB();
+    }
+    catch (_e) {
+        // failed to read from indexeddb. We assume there is no existing debug token, and generate a new one.
+    }
+    if (!existingDebugToken) {
+        // create a new debug token
+        // This function is only available in secure contexts. See https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts
+        const newToken = crypto.randomUUID();
+        // We don't need to block on writing to indexeddb
+        // In case persistence failed, a new debug token will be generated every time the page is refreshed.
+        // It renders the debug token useless because you have to manually register(whitelist) the new token in the firebase console again and again.
+        // If you see this error trying to use debug token, it probably means you are using a browser that doesn't support indexeddb.
+        // You should switch to a different browser that supports indexeddb
+        writeDebugTokenToIndexedDB(newToken).catch(e => logger.warn(`Failed to persist debug token to IndexedDB. Error: ${e}`));
+        return newToken;
+    }
+    else {
+        return existingDebugToken;
+    }
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+function isDebugMode() {
+    const debugState = getDebugState();
+    return debugState.enabled;
+}
+async function getDebugToken() {
+    const state = getDebugState();
+    if (state.enabled && state.token) {
+        return state.token.promise;
+    }
+    else {
+        // should not happen!
+        throw Error(`
+            Can't get debug token in production mode.
+        `);
+    }
+}
+function initializeDebugMode() {
+    const globals = util.getGlobal();
+    const debugState = getDebugState();
+    // Set to true if this function has been called, whether or not
+    // it enabled debug mode.
+    debugState.initialized = true;
+    if (typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== 'string' &&
+        globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== true) {
+        return;
+    }
+    debugState.enabled = true;
+    const deferredToken = new util.Deferred();
+    debugState.token = deferredToken;
+    if (typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN === 'string') {
+        deferredToken.resolve(globals.FIREBASE_APPCHECK_DEBUG_TOKEN);
+    }
+    else {
+        deferredToken.resolve(readOrCreateDebugTokenFromStorage());
+    }
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Initial hardcoded value agreed upon across platforms for initial launch.
+// Format left open for possible dynamic error values and other fields in the future.
+const defaultTokenErrorData = { error: 'UNKNOWN_ERROR' };
+/**
+ * Stringify and base64 encode token error data.
+ *
+ * @param tokenError Error data, currently hardcoded.
+ */
+function formatDummyToken(tokenErrorData) {
+    return util.base64.encodeString(JSON.stringify(tokenErrorData), 
+    /* webSafe= */ false);
+}
+/**
+ * This function always resolves.
+ * The result will contain an error field if there is any error.
+ * In case there is an error, the token field in the result will be populated with a dummy value
+ */
+async function getToken$2(appCheck, forceRefresh = false, shouldLogErrors = false) {
+    const app = appCheck.app;
+    ensureActivated(app);
+    const state = getStateReference(app);
+    /**
+     * First check if there is a token in memory from a previous `getToken()` call.
+     */
+    let token = state.token;
+    let error = undefined;
+    /**
+     * If an invalid token was found in memory, clear token from
+     * memory and unset the local variable `token`.
+     */
+    if (token && !isValid(token)) {
+        state.token = undefined;
+        token = undefined;
+    }
+    /**
+     * If there is no valid token in memory, try to load token from indexedDB.
+     */
+    if (!token) {
+        // cachedTokenPromise contains the token found in IndexedDB or undefined if not found.
+        const cachedToken = await state.cachedTokenPromise;
+        if (cachedToken) {
+            if (isValid(cachedToken)) {
+                token = cachedToken;
+            }
+            else {
+                // If there was an invalid token in the indexedDB cache, clear it.
+                await writeTokenToStorage(app, undefined);
+            }
+        }
+    }
+    // Return the cached token (from either memory or indexedDB) if it's valid
+    if (!forceRefresh && token && isValid(token)) {
+        return {
+            token: token.token
+        };
+    }
+    // Only set to true if this `getToken()` call is making the actual
+    // REST call to the exchange endpoint, versus waiting for an already
+    // in-flight call (see debug and regular exchange endpoint paths below)
+    let shouldCallListeners = false;
+    /**
+     * DEBUG MODE
+     * If debug mode is set, and there is no cached token, fetch a new App
+     * Check token using the debug token, and return it directly.
+     */
+    if (isDebugMode()) {
+        try {
+            // Avoid making another call to the exchange endpoint if one is in flight.
+            if (!state.exchangeTokenPromise) {
+                state.exchangeTokenPromise = exchangeToken(getExchangeDebugTokenRequest(app, await getDebugToken()), appCheck.heartbeatServiceProvider).finally(() => {
+                    // Clear promise when settled - either resolved or rejected.
+                    state.exchangeTokenPromise = undefined;
+                });
+                shouldCallListeners = true;
+            }
+            const tokenFromDebugExchange = await state.exchangeTokenPromise;
+            // Write debug token to indexedDB.
+            await writeTokenToStorage(app, tokenFromDebugExchange);
+            // Write debug token to state.
+            state.token = tokenFromDebugExchange;
+            return { token: tokenFromDebugExchange.token };
+        }
+        catch (e) {
+            if (e.code === `appCheck/${"throttled" /* AppCheckError.THROTTLED */}` ||
+                e.code ===
+                    `appCheck/${"initial-throttle" /* AppCheckError.INITIAL_THROTTLE */}`) {
+                // Warn if throttled, but do not treat it as an error.
+                logger.warn(e.message);
+            }
+            else if (shouldLogErrors) {
+                logger.error(e);
+            }
+            // Return dummy token and error
+            return makeDummyTokenResult(e);
+        }
+    }
+    /**
+     * There are no valid tokens in memory or indexedDB and we are not in
+     * debug mode.
+     * Request a new token from the exchange endpoint.
+     */
+    try {
+        // Avoid making another call to the exchange endpoint if one is in flight.
+        if (!state.exchangeTokenPromise) {
+            // state.provider is populated in initializeAppCheck()
+            // ensureActivated() at the top of this function checks that
+            // initializeAppCheck() has been called.
+            state.exchangeTokenPromise = state.provider.getToken().finally(() => {
+                // Clear promise when settled - either resolved or rejected.
+                state.exchangeTokenPromise = undefined;
+            });
+            shouldCallListeners = true;
+        }
+        token = await getStateReference(app).exchangeTokenPromise;
+    }
+    catch (e) {
+        if (e.code === `appCheck/${"throttled" /* AppCheckError.THROTTLED */}` ||
+            e.code === `appCheck/${"initial-throttle" /* AppCheckError.INITIAL_THROTTLE */}`) {
+            // Warn if throttled, but do not treat it as an error.
+            logger.warn(e.message);
+        }
+        else if (shouldLogErrors) {
+            logger.error(e);
+        }
+        // Always save error to be added to dummy token.
+        error = e;
+    }
+    let interopTokenResult;
+    if (!token) {
+        // If token is undefined, there must be an error.
+        // Return a dummy token along with the error.
+        interopTokenResult = makeDummyTokenResult(error);
+    }
+    else if (error) {
+        if (isValid(token)) {
+            // It's also possible a valid token exists, but there's also an error.
+            // (Such as if the token is almost expired, tries to refresh, and
+            // the exchange request fails.)
+            // We add a special error property here so that the refresher will
+            // count this as a failed attempt and use the backoff instead of
+            // retrying repeatedly with no delay, but any 3P listeners will not
+            // be hindered in getting the still-valid token.
+            interopTokenResult = {
+                token: token.token,
+                internalError: error
+            };
+        }
+        else {
+            // No invalid tokens should make it to this step. Memory and cached tokens
+            // are checked. Other tokens are from fresh exchanges. But just in case.
+            interopTokenResult = makeDummyTokenResult(error);
+        }
+    }
+    else {
+        interopTokenResult = {
+            token: token.token
+        };
+        // write the new token to the memory state as well as the persistent storage.
+        // Only do it if we got a valid new token
+        state.token = token;
+        await writeTokenToStorage(app, token);
+    }
+    if (shouldCallListeners) {
+        notifyTokenListeners(app, interopTokenResult);
+    }
+    return interopTokenResult;
+}
+/**
+ * Internal API for limited use tokens. Skips all FAC state and simply calls
+ * the underlying provider.
+ */
+async function getLimitedUseToken$1(appCheck) {
+    const app = appCheck.app;
+    ensureActivated(app);
+    const { provider } = getStateReference(app);
+    if (isDebugMode()) {
+        const debugToken = await getDebugToken();
+        const { token } = await exchangeToken(getExchangeDebugTokenRequest(app, debugToken), appCheck.heartbeatServiceProvider);
+        return { token };
+    }
+    else {
+        // provider is definitely valid since we ensure AppCheck was activated
+        const { token } = await provider.getToken();
+        return { token };
+    }
+}
+function addTokenListener(appCheck, type, listener, onError) {
+    const { app } = appCheck;
+    const state = getStateReference(app);
+    const tokenObserver = {
+        next: listener,
+        error: onError,
+        type
+    };
+    state.tokenObservers = [...state.tokenObservers, tokenObserver];
+    // Invoke the listener async immediately if there is a valid token
+    // in memory.
+    if (state.token && isValid(state.token)) {
+        const validToken = state.token;
+        Promise.resolve()
+            .then(() => {
+            listener({ token: validToken.token });
+            initTokenRefresher(appCheck);
+        })
+            .catch(() => {
+            /* we don't care about exceptions thrown in listeners */
+        });
+    }
+    /**
+     * Wait for any cached token promise to resolve before starting the token
+     * refresher. The refresher checks to see if there is an existing token
+     * in state and calls the exchange endpoint if not. We should first let the
+     * IndexedDB check have a chance to populate state if it can.
+     *
+     * Listener call isn't needed here because cachedTokenPromise will call any
+     * listeners that exist when it resolves.
+     */
+    // state.cachedTokenPromise is always populated in `activate()`.
+    void state.cachedTokenPromise.then(() => initTokenRefresher(appCheck));
+}
+function removeTokenListener(app, listener) {
+    const state = getStateReference(app);
+    const newObservers = state.tokenObservers.filter(tokenObserver => tokenObserver.next !== listener);
+    if (newObservers.length === 0 &&
+        state.tokenRefresher &&
+        state.tokenRefresher.isRunning()) {
+        state.tokenRefresher.stop();
+    }
+    state.tokenObservers = newObservers;
+}
+/**
+ * Logic to create and start refresher as needed.
+ */
+function initTokenRefresher(appCheck) {
+    const { app } = appCheck;
+    const state = getStateReference(app);
+    // Create the refresher but don't start it if `isTokenAutoRefreshEnabled`
+    // is not true.
+    let refresher = state.tokenRefresher;
+    if (!refresher) {
+        refresher = createTokenRefresher(appCheck);
+        state.tokenRefresher = refresher;
+    }
+    if (!refresher.isRunning() && state.isTokenAutoRefreshEnabled) {
+        refresher.start();
+    }
+}
+function createTokenRefresher(appCheck) {
+    const { app } = appCheck;
+    return new Refresher(
+    // Keep in mind when this fails for any reason other than the ones
+    // for which we should retry, it will effectively stop the proactive refresh.
+    async () => {
+        const state = getStateReference(app);
+        // If there is no token, we will try to load it from storage and use it
+        // If there is a token, we force refresh it because we know it's going to expire soon
+        let result;
+        if (!state.token) {
+            result = await getToken$2(appCheck);
+        }
+        else {
+            result = await getToken$2(appCheck, true);
+        }
+        /**
+         * getToken() always resolves. In case the result has an error field defined, it means
+         * the operation failed, and we should retry.
+         */
+        if (result.error) {
+            throw result.error;
+        }
+        /**
+         * A special `internalError` field reflects that there was an error
+         * getting a new token from the exchange endpoint, but there's still a
+         * previous token that's valid for now and this should be passed to 2P/3P
+         * requests for a token. But we want this callback (`this.operation` in
+         * `Refresher`) to throw in order to kick off the Refresher's retry
+         * backoff. (Setting `hasSucceeded` to false.)
+         */
+        if (result.internalError) {
+            throw result.internalError;
+        }
+    }, () => {
+        return true;
+    }, () => {
+        const state = getStateReference(app);
+        if (state.token) {
+            // issuedAtTime + (50% * total TTL) + 5 minutes
+            let nextRefreshTimeMillis = state.token.issuedAtTimeMillis +
+                (state.token.expireTimeMillis - state.token.issuedAtTimeMillis) *
+                    0.5 +
+                5 * 60 * 1000;
+            // Do not allow refresh time to be past (expireTime - 5 minutes)
+            const latestAllowableRefresh = state.token.expireTimeMillis - 5 * 60 * 1000;
+            nextRefreshTimeMillis = Math.min(nextRefreshTimeMillis, latestAllowableRefresh);
+            return Math.max(0, nextRefreshTimeMillis - Date.now());
+        }
+        else {
+            return 0;
+        }
+    }, TOKEN_REFRESH_TIME.RETRIAL_MIN_WAIT, TOKEN_REFRESH_TIME.RETRIAL_MAX_WAIT);
+}
+function notifyTokenListeners(app, token) {
+    const observers = getStateReference(app).tokenObservers;
+    for (const observer of observers) {
+        try {
+            if (observer.type === "EXTERNAL" /* ListenerType.EXTERNAL */ && token.error != null) {
+                // If this listener was added by a 3P call, send any token error to
+                // the supplied error handler. A 3P observer always has an error
+                // handler.
+                observer.error(token.error);
+            }
+            else {
+                // If the token has no error field, always return the token.
+                // If this is a 2P listener, return the token, whether or not it
+                // has an error field.
+                observer.next(token);
+            }
+        }
+        catch (e) {
+            // Errors in the listener function itself are always ignored.
+        }
+    }
+}
+function isValid(token) {
+    return token.expireTimeMillis - Date.now() > 0;
+}
+function makeDummyTokenResult(error) {
+    return {
+        token: formatDummyToken(defaultTokenErrorData),
+        error
+    };
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * AppCheck Service class.
+ */
+class AppCheckService {
+    constructor(app, heartbeatServiceProvider) {
+        this.app = app;
+        this.heartbeatServiceProvider = heartbeatServiceProvider;
+    }
+    _delete() {
+        const { tokenObservers } = getStateReference(this.app);
+        for (const tokenObserver of tokenObservers) {
+            removeTokenListener(this.app, tokenObserver.next);
+        }
+        return Promise.resolve();
+    }
+}
+function factory(app, heartbeatServiceProvider) {
+    return new AppCheckService(app, heartbeatServiceProvider);
+}
+function internalFactory(appCheck) {
+    return {
+        getToken: forceRefresh => getToken$2(appCheck, forceRefresh),
+        getLimitedUseToken: () => getLimitedUseToken$1(appCheck),
+        addTokenListener: listener => addTokenListener(appCheck, "INTERNAL" /* ListenerType.INTERNAL */, listener),
+        removeTokenListener: listener => removeTokenListener(appCheck.app, listener)
+    };
+}
+
+const name = "@firebase/app-check";
+const version = "0.11.0";
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const RECAPTCHA_URL = 'https://www.google.com/recaptcha/api.js';
+const RECAPTCHA_ENTERPRISE_URL = 'https://www.google.com/recaptcha/enterprise.js';
+function initializeV3(app, siteKey) {
+    const initialized = new util.Deferred();
+    const state = getStateReference(app);
+    state.reCAPTCHAState = { initialized };
+    const divId = makeDiv(app);
+    const grecaptcha = getRecaptcha(false);
+    if (!grecaptcha) {
+        loadReCAPTCHAV3Script(() => {
+            const grecaptcha = getRecaptcha(false);
+            if (!grecaptcha) {
+                // it shouldn't happen.
+                throw new Error('no recaptcha');
+            }
+            queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+        });
+    }
+    else {
+        queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+    }
+    return initialized.promise;
+}
+function initializeEnterprise(app, siteKey) {
+    const initialized = new util.Deferred();
+    const state = getStateReference(app);
+    state.reCAPTCHAState = { initialized };
+    const divId = makeDiv(app);
+    const grecaptcha = getRecaptcha(true);
+    if (!grecaptcha) {
+        loadReCAPTCHAEnterpriseScript(() => {
+            const grecaptcha = getRecaptcha(true);
+            if (!grecaptcha) {
+                // it shouldn't happen.
+                throw new Error('no recaptcha');
+            }
+            queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+        });
+    }
+    else {
+        queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);
+    }
+    return initialized.promise;
+}
+/**
+ * Add listener to render the widget and resolve the promise when
+ * the grecaptcha.ready() event fires.
+ */
+function queueWidgetRender(app, siteKey, grecaptcha, container, initialized) {
+    grecaptcha.ready(() => {
+        // Invisible widgets allow us to set a different siteKey for each widget,
+        // so we use them to support multiple apps
+        renderInvisibleWidget(app, siteKey, grecaptcha, container);
+        initialized.resolve(grecaptcha);
+    });
+}
+/**
+ * Add invisible div to page.
+ */
+function makeDiv(app) {
+    const divId = `fire_app_check_${app.name}`;
+    const invisibleDiv = document.createElement('div');
+    invisibleDiv.id = divId;
+    invisibleDiv.style.display = 'none';
+    document.body.appendChild(invisibleDiv);
+    return divId;
+}
+async function getToken$1(app) {
+    ensureActivated(app);
+    // ensureActivated() guarantees that reCAPTCHAState is set
+    const reCAPTCHAState = getStateReference(app).reCAPTCHAState;
+    const recaptcha = await reCAPTCHAState.initialized.promise;
+    return new Promise((resolve, _reject) => {
+        // Updated after initialization is complete.
+        const reCAPTCHAState = getStateReference(app).reCAPTCHAState;
+        recaptcha.ready(() => {
+            resolve(
+            // widgetId is guaranteed to be available if reCAPTCHAState.initialized.promise resolved.
+            recaptcha.execute(reCAPTCHAState.widgetId, {
+                action: 'fire_app_check'
+            }));
+        });
+    });
+}
+/**
+ *
+ * @param app
+ * @param container - Id of a HTML element.
+ */
+function renderInvisibleWidget(app, siteKey, grecaptcha, container) {
+    const widgetId = grecaptcha.render(container, {
+        sitekey: siteKey,
+        size: 'invisible',
+        // Success callback - set state
+        callback: () => {
+            getStateReference(app).reCAPTCHAState.succeeded = true;
+        },
+        // Failure callback - set state
+        'error-callback': () => {
+            getStateReference(app).reCAPTCHAState.succeeded = false;
+        }
+    });
+    const state = getStateReference(app);
+    state.reCAPTCHAState = {
+        ...state.reCAPTCHAState, // state.reCAPTCHAState is set in the initialize()
+        widgetId
+    };
+}
+function loadReCAPTCHAV3Script(onload) {
+    const script = document.createElement('script');
+    script.src = RECAPTCHA_URL;
+    script.onload = onload;
+    document.head.appendChild(script);
+}
+function loadReCAPTCHAEnterpriseScript(onload) {
+    const script = document.createElement('script');
+    script.src = RECAPTCHA_ENTERPRISE_URL;
+    script.onload = onload;
+    document.head.appendChild(script);
+}
+
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * App Check provider that can obtain a reCAPTCHA V3 token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+class ReCaptchaV3Provider {
+    /**
+     * Create a ReCaptchaV3Provider instance.
+     * @param siteKey - ReCAPTCHA V3 siteKey.
+     */
+    constructor(_siteKey) {
+        this._siteKey = _siteKey;
+        /**
+         * Throttle requests on certain error codes to prevent too many retries
+         * in a short time.
+         */
+        this._throttleData = null;
+    }
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    async getToken() {
+        throwIfThrottled(this._throttleData);
+        // Top-level `getToken()` has already checked that App Check is initialized
+        // and therefore this._app and this._heartbeatServiceProvider are available.
+        const attestedClaimsToken = await getToken$1(this._app).catch(_e => {
+            // reCaptcha.execute() throws null which is not very descriptive.
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        });
+        // Check if a failure state was set by the recaptcha "error-callback".
+        if (!getStateReference(this._app).reCAPTCHAState?.succeeded) {
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        }
+        let result;
+        try {
+            result = await exchangeToken(getExchangeRecaptchaV3TokenRequest(this._app, attestedClaimsToken), this._heartbeatServiceProvider);
+        }
+        catch (e) {
+            if (e.code?.includes("fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */)) {
+                this._throttleData = setBackoff(Number(e.customData?.httpStatus), this._throttleData);
+                throw ERROR_FACTORY.create("initial-throttle" /* AppCheckError.INITIAL_THROTTLE */, {
+                    time: getDurationString(this._throttleData.allowRequestsAfter - Date.now()),
+                    httpStatus: this._throttleData.httpStatus
+                });
+            }
+            else {
+                throw e;
+            }
+        }
+        // If successful, clear throttle data.
+        this._throttleData = null;
+        return result;
+    }
+    /**
+     * @internal
+     */
+    initialize(app$1) {
+        this._app = app$1;
+        this._heartbeatServiceProvider = app._getProvider(app$1, 'heartbeat');
+        initializeV3(app$1, this._siteKey).catch(() => {
+            /* we don't care about the initialization result */
+        });
+    }
+    /**
+     * @internal
+     */
+    isEqual(otherProvider) {
+        if (otherProvider instanceof ReCaptchaV3Provider) {
+            return this._siteKey === otherProvider._siteKey;
+        }
+        else {
+            return false;
+        }
+    }
+}
+/**
+ * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+class ReCaptchaEnterpriseProvider {
+    /**
+     * Create a ReCaptchaEnterpriseProvider instance.
+     * @param siteKey - reCAPTCHA Enterprise score-based site key.
+     */
+    constructor(_siteKey) {
+        this._siteKey = _siteKey;
+        /**
+         * Throttle requests on certain error codes to prevent too many retries
+         * in a short time.
+         */
+        this._throttleData = null;
+    }
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    async getToken() {
+        throwIfThrottled(this._throttleData);
+        // Top-level `getToken()` has already checked that App Check is initialized
+        // and therefore this._app and this._heartbeatServiceProvider are available.
+        const attestedClaimsToken = await getToken$1(this._app).catch(_e => {
+            // reCaptcha.execute() throws null which is not very descriptive.
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        });
+        // Check if a failure state was set by the recaptcha "error-callback".
+        if (!getStateReference(this._app).reCAPTCHAState?.succeeded) {
+            throw ERROR_FACTORY.create("recaptcha-error" /* AppCheckError.RECAPTCHA_ERROR */);
+        }
+        let result;
+        try {
+            result = await exchangeToken(getExchangeRecaptchaEnterpriseTokenRequest(this._app, attestedClaimsToken), this._heartbeatServiceProvider);
+        }
+        catch (e) {
+            if (e.code?.includes("fetch-status-error" /* AppCheckError.FETCH_STATUS_ERROR */)) {
+                this._throttleData = setBackoff(Number(e.customData?.httpStatus), this._throttleData);
+                throw ERROR_FACTORY.create("initial-throttle" /* AppCheckError.INITIAL_THROTTLE */, {
+                    time: getDurationString(this._throttleData.allowRequestsAfter - Date.now()),
+                    httpStatus: this._throttleData.httpStatus
+                });
+            }
+            else {
+                throw e;
+            }
+        }
+        // If successful, clear throttle data.
+        this._throttleData = null;
+        return result;
+    }
+    /**
+     * @internal
+     */
+    initialize(app$1) {
+        this._app = app$1;
+        this._heartbeatServiceProvider = app._getProvider(app$1, 'heartbeat');
+        initializeEnterprise(app$1, this._siteKey).catch(() => {
+            /* we don't care about the initialization result */
+        });
+    }
+    /**
+     * @internal
+     */
+    isEqual(otherProvider) {
+        if (otherProvider instanceof ReCaptchaEnterpriseProvider) {
+            return this._siteKey === otherProvider._siteKey;
+        }
+        else {
+            return false;
+        }
+    }
+}
+/**
+ * Custom provider class.
+ * @public
+ */
+class CustomProvider {
+    constructor(_customProviderOptions) {
+        this._customProviderOptions = _customProviderOptions;
+    }
+    /**
+     * @internal
+     */
+    async getToken() {
+        // custom provider
+        const customToken = await this._customProviderOptions.getToken();
+        // Try to extract IAT from custom token, in case this token is not
+        // being newly issued. JWT timestamps are in seconds since epoch.
+        const issuedAtTimeSeconds = util.issuedAtTime(customToken.token);
+        // Very basic validation, use current timestamp as IAT if JWT
+        // has no `iat` field or value is out of bounds.
+        const issuedAtTimeMillis = issuedAtTimeSeconds !== null &&
+            issuedAtTimeSeconds < Date.now() &&
+            issuedAtTimeSeconds > 0
+            ? issuedAtTimeSeconds * 1000
+            : Date.now();
+        return { ...customToken, issuedAtTimeMillis };
+    }
+    /**
+     * @internal
+     */
+    initialize(app) {
+        this._app = app;
+    }
+    /**
+     * @internal
+     */
+    isEqual(otherProvider) {
+        if (otherProvider instanceof CustomProvider) {
+            return (this._customProviderOptions.getToken.toString() ===
+                otherProvider._customProviderOptions.getToken.toString());
+        }
+        else {
+            return false;
+        }
+    }
+}
+/**
+ * Set throttle data to block requests until after a certain time
+ * depending on the failed request's status code.
+ * @param httpStatus - Status code of failed request.
+ * @param throttleData - `ThrottleData` object containing previous throttle
+ * data state.
+ * @returns Data about current throttle state and expiration time.
+ */
+function setBackoff(httpStatus, throttleData) {
+    /**
+     * Block retries for 1 day for the following error codes:
+     *
+     * 404: Likely malformed URL.
+     *
+     * 403:
+     * - Attestation failed
+     * - Wrong API key
+     * - Project deleted
+     */
+    if (httpStatus === 404 || httpStatus === 403) {
+        return {
+            backoffCount: 1,
+            allowRequestsAfter: Date.now() + ONE_DAY,
+            httpStatus
+        };
+    }
+    else {
+        /**
+         * For all other error codes, the time when it is ok to retry again
+         * is based on exponential backoff.
+         */
+        const backoffCount = throttleData ? throttleData.backoffCount : 0;
+        const backoffMillis = util.calculateBackoffMillis(backoffCount, 1000, 2);
+        return {
+            backoffCount: backoffCount + 1,
+            allowRequestsAfter: Date.now() + backoffMillis,
+            httpStatus
+        };
+    }
+}
+function throwIfThrottled(throttleData) {
+    if (throttleData) {
+        if (Date.now() - throttleData.allowRequestsAfter <= 0) {
+            // If before, throw.
+            throw ERROR_FACTORY.create("throttled" /* AppCheckError.THROTTLED */, {
+                time: getDurationString(throttleData.allowRequestsAfter - Date.now()),
+                httpStatus: throttleData.httpStatus
+            });
+        }
+    }
+}
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Activate App Check for the given app. Can be called only once per app.
+ * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for
+ * @param options - App Check initialization options
+ * @public
+ */
+function initializeAppCheck(app$1 = app.getApp(), options) {
+    app$1 = util.getModularInstance(app$1);
+    const provider = app._getProvider(app$1, 'app-check');
+    // Ensure initializeDebugMode() is only called once.
+    if (!getDebugState().initialized) {
+        initializeDebugMode();
+    }
+    // Log a message containing the debug token when `initializeAppCheck()`
+    // is called in debug mode.
+    if (isDebugMode()) {
+        // Do not block initialization to get the token for the message.
+        void getDebugToken().then(token => 
+        // Not using logger because I don't think we ever want this accidentally hidden.
+        console.log(`App Check debug token: ${token}. You will need to add it to your app's App Check settings in the Firebase console for it to work.`));
+    }
+    if (provider.isInitialized()) {
+        const existingInstance = provider.getImmediate();
+        const initialOptions = provider.getOptions();
+        if (initialOptions.isTokenAutoRefreshEnabled ===
+            options.isTokenAutoRefreshEnabled &&
+            initialOptions.provider.isEqual(options.provider)) {
+            return existingInstance;
+        }
+        else {
+            throw ERROR_FACTORY.create("already-initialized" /* AppCheckError.ALREADY_INITIALIZED */, {
+                appName: app$1.name
+            });
+        }
+    }
+    const appCheck = provider.initialize({ options });
+    _activate(app$1, options.provider, options.isTokenAutoRefreshEnabled);
+    // If isTokenAutoRefreshEnabled is false, do not send any requests to the
+    // exchange endpoint without an explicit call from the user either directly
+    // or through another Firebase library (storage, functions, etc.)
+    if (getStateReference(app$1).isTokenAutoRefreshEnabled) {
+        // Adding a listener will start the refresher and fetch a token if needed.
+        // This gets a token ready and prevents a delay when an internal library
+        // requests the token.
+        // Listener function does not need to do anything, its base functionality
+        // of calling getToken() already fetches token and writes it to memory/storage.
+        addTokenListener(appCheck, "INTERNAL" /* ListenerType.INTERNAL */, () => { });
+    }
+    return appCheck;
+}
+/**
+ * Activate App Check
+ * @param app - Firebase app to activate App Check for.
+ * @param provider - reCAPTCHA v3 provider or
+ * custom token provider.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. If undefined, defaults to the
+ * value of `app.automaticDataCollectionEnabled`, which defaults to
+ * false and can be set in the app config.
+ */
+function _activate(app, provider, isTokenAutoRefreshEnabled = false) {
+    // Create an entry in the APP_CHECK_STATES map. Further changes should
+    // directly mutate this object.
+    const state = setInitialState(app, { ...DEFAULT_STATE });
+    state.activated = true;
+    state.provider = provider; // Read cached token from storage if it exists and store it in memory.
+    state.cachedTokenPromise = readTokenFromStorage(app).then(cachedToken => {
+        if (cachedToken && isValid(cachedToken)) {
+            state.token = cachedToken;
+            // notify all listeners with the cached token
+            notifyTokenListeners(app, { token: cachedToken.token });
+        }
+        return cachedToken;
+    });
+    // Global `automaticDataCollectionEnabled` (defaults to true) and
+    // `isTokenAutoRefreshEnabled` must both be true.
+    state.isTokenAutoRefreshEnabled =
+        isTokenAutoRefreshEnabled && app.automaticDataCollectionEnabled;
+    if (!app.automaticDataCollectionEnabled && isTokenAutoRefreshEnabled) {
+        logger.warn('`isTokenAutoRefreshEnabled` is true but ' +
+            '`automaticDataCollectionEnabled` was set to false during' +
+            ' `initializeApp()`. This blocks automatic token refresh.');
+    }
+    state.provider.initialize(app);
+}
+/**
+ * Set whether App Check will automatically refresh tokens as needed.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. This overrides any value set
+ * during `initializeAppCheck()`.
+ * @public
+ */
+function setTokenAutoRefreshEnabled(appCheckInstance, isTokenAutoRefreshEnabled) {
+    const app = appCheckInstance.app;
+    const state = getStateReference(app);
+    // This will exist if any product libraries have called
+    // `addTokenListener()`
+    if (state.tokenRefresher) {
+        if (isTokenAutoRefreshEnabled === true) {
+            state.tokenRefresher.start();
+        }
+        else {
+            state.tokenRefresher.stop();
+        }
+    }
+    state.isTokenAutoRefreshEnabled = isTokenAutoRefreshEnabled;
+}
+/**
+ * Get the current App Check token. If `forceRefresh` is false, this function first
+ * checks for a valid token in memory, then local persistence (IndexedDB).
+ * If not found, or if `forceRefresh` is true, it makes a request to the
+ * App Check endpoint for a fresh token. That request attaches
+ * to the most recent in-flight request if one is present.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param forceRefresh - If true, will always try to fetch a fresh token.
+ * If false, will use a cached token if found in storage.
+ * @public
+ */
+async function getToken(appCheckInstance, forceRefresh) {
+    const result = await getToken$2(appCheckInstance, forceRefresh);
+    if (result.error) {
+        throw result.error;
+    }
+    if (result.internalError) {
+        throw result.internalError;
+    }
+    return { token: result.token };
+}
+/**
+ * Requests a Firebase App Check token. This method should be used
+ * only if you need to authorize requests to a non-Firebase backend.
+ *
+ * Returns limited-use tokens that are intended for use with your
+ * non-Firebase backend endpoints that are protected with
+ * <a href="https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection">
+ * Replay Protection</a>. This method
+ * does not affect the token generation behavior of the
+ * #getAppCheckToken() method.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @returns The limited use token.
+ * @public
+ */
+function getLimitedUseToken(appCheckInstance) {
+    return getLimitedUseToken$1(appCheckInstance);
+}
+/**
+ * Wraps `addTokenListener`/`removeTokenListener` methods in an `Observer`
+ * pattern for public use.
+ */
+function onTokenChanged(appCheckInstance, onNextOrObserver, onError, 
+/**
+ * NOTE: Although an `onCompletion` callback can be provided, it will
+ * never be called because the token stream is never-ending.
+ * It is added only for API consistency with the observer pattern, which
+ * we follow in JS APIs.
+ */
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+onCompletion) {
+    let nextFn = () => { };
+    let errorFn = () => { };
+    if (onNextOrObserver.next != null) {
+        nextFn = onNextOrObserver.next.bind(onNextOrObserver);
+    }
+    else {
+        nextFn = onNextOrObserver;
+    }
+    if (onNextOrObserver.error != null) {
+        errorFn = onNextOrObserver.error.bind(onNextOrObserver);
+    }
+    else if (onError) {
+        errorFn = onError;
+    }
+    addTokenListener(appCheckInstance, "EXTERNAL" /* ListenerType.EXTERNAL */, nextFn, errorFn);
+    return () => removeTokenListener(appCheckInstance.app, nextFn);
+}
+
+/**
+ * The Firebase App Check Web SDK.
+ *
+ * @remarks
+ * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or
+ * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use
+ * `CustomProvider` and write your own attestation method.
+ *
+ * @packageDocumentation
+ */
+const APP_CHECK_NAME = 'app-check';
+const APP_CHECK_NAME_INTERNAL = 'app-check-internal';
+function registerAppCheck() {
+    // The public interface
+    app._registerComponent(new component.Component(APP_CHECK_NAME, container => {
+        // getImmediate for FirebaseApp will always succeed
+        const app = container.getProvider('app').getImmediate();
+        const heartbeatServiceProvider = container.getProvider('heartbeat');
+        return factory(app, heartbeatServiceProvider);
+    }, "PUBLIC" /* ComponentType.PUBLIC */)
+        .setInstantiationMode("EXPLICIT" /* InstantiationMode.EXPLICIT */)
+        /**
+         * Initialize app-check-internal after app-check is initialized to make AppCheck available to
+         * other Firebase SDKs
+         */
+        .setInstanceCreatedCallback((container, _identifier, _appcheckService) => {
+        container.getProvider(APP_CHECK_NAME_INTERNAL).initialize();
+    }));
+    // The internal interface used by other Firebase products
+    app._registerComponent(new component.Component(APP_CHECK_NAME_INTERNAL, container => {
+        const appCheck = container.getProvider('app-check').getImmediate();
+        return internalFactory(appCheck);
+    }, "PUBLIC" /* ComponentType.PUBLIC */).setInstantiationMode("EXPLICIT" /* InstantiationMode.EXPLICIT */));
+    app.registerVersion(name, version);
+}
+registerAppCheck();
+
+exports.CustomProvider = CustomProvider;
+exports.ReCaptchaEnterpriseProvider = ReCaptchaEnterpriseProvider;
+exports.ReCaptchaV3Provider = ReCaptchaV3Provider;
+exports.getLimitedUseToken = getLimitedUseToken;
+exports.getToken = getToken;
+exports.initializeAppCheck = initializeAppCheck;
+exports.onTokenChanged = onTokenChanged;
+exports.setTokenAutoRefreshEnabled = setTokenAutoRefreshEnabled;
+//# sourceMappingURL=index.cjs.js.map
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/index.cjs.js.map b/frontend-old/node_modules/@firebase/app-check/dist/index.cjs.js.map
new file mode 100644
index 0000000..a89917e
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/index.cjs.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.cjs.js","sources":["../src/state.ts","../src/constants.ts","../src/proactive-refresh.ts","../src/errors.ts","../src/util.ts","../src/client.ts","../src/indexeddb.ts","../src/logger.ts","../src/storage.ts","../src/debug.ts","../src/internal-api.ts","../src/factory.ts","../src/recaptcha.ts","../src/providers.ts","../src/api.ts","../src/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport {\n  AppCheckProvider,\n  AppCheckTokenInternal,\n  AppCheckTokenObserver\n} from './types';\nimport { Refresher } from './proactive-refresh';\nimport { Deferred } from '@firebase/util';\nimport { GreCAPTCHA } from './recaptcha';\nexport interface AppCheckState {\n  activated: boolean;\n  tokenObservers: AppCheckTokenObserver[];\n  provider?: AppCheckProvider;\n  token?: AppCheckTokenInternal;\n  cachedTokenPromise?: Promise<AppCheckTokenInternal | undefined>;\n  exchangeTokenPromise?: Promise<AppCheckTokenInternal>;\n  tokenRefresher?: Refresher;\n  reCAPTCHAState?: ReCAPTCHAState;\n  isTokenAutoRefreshEnabled?: boolean;\n}\n\nexport interface ReCAPTCHAState {\n  initialized: Deferred<GreCAPTCHA>;\n  widgetId?: string;\n  // True if the most recent recaptcha check succeeded.\n  succeeded?: boolean;\n}\n\nexport interface DebugState {\n  initialized: boolean;\n  enabled: boolean;\n  token?: Deferred<string>;\n}\n\nconst APP_CHECK_STATES = new Map<FirebaseApp, AppCheckState>();\nexport const DEFAULT_STATE: AppCheckState = {\n  activated: false,\n  tokenObservers: []\n};\n\nconst DEBUG_STATE: DebugState = {\n  initialized: false,\n  enabled: false\n};\n\n/**\n * Gets a reference to the state object.\n */\nexport function getStateReference(app: FirebaseApp): AppCheckState {\n  return APP_CHECK_STATES.get(app) || { ...DEFAULT_STATE };\n}\n\n/**\n * Set once on initialization. The map should hold the same reference to the\n * same object until this entry is deleted.\n */\nexport function setInitialState(\n  app: FirebaseApp,\n  state: AppCheckState\n): AppCheckState {\n  APP_CHECK_STATES.set(app, state);\n  return APP_CHECK_STATES.get(app) as AppCheckState;\n}\n\n// for testing only\nexport function clearState(): void {\n  APP_CHECK_STATES.clear();\n  DEBUG_STATE.enabled = false;\n  DEBUG_STATE.token = undefined;\n  DEBUG_STATE.initialized = false;\n}\n\nexport function getDebugState(): DebugState {\n  return DEBUG_STATE;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nexport const BASE_ENDPOINT =\n  'https://content-firebaseappcheck.googleapis.com/v1';\n\nexport const EXCHANGE_RECAPTCHA_TOKEN_METHOD = 'exchangeRecaptchaV3Token';\nexport const EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD =\n  'exchangeRecaptchaEnterpriseToken';\nexport const EXCHANGE_DEBUG_TOKEN_METHOD = 'exchangeDebugToken';\n\nexport const TOKEN_REFRESH_TIME = {\n  /**\n   * The offset time before token natural expiration to run the refresh.\n   * This is currently 5 minutes.\n   */\n  OFFSET_DURATION: 5 * 60 * 1000,\n  /**\n   * This is the first retrial wait after an error. This is currently\n   * 30 seconds.\n   */\n  RETRIAL_MIN_WAIT: 30 * 1000,\n  /**\n   * This is the maximum retrial wait, currently 16 minutes.\n   */\n  RETRIAL_MAX_WAIT: 16 * 60 * 1000\n};\n\n/**\n * One day in millis, for certain error code backoffs.\n */\nexport const ONE_DAY = 24 * 60 * 60 * 1000;\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Deferred } from '@firebase/util';\n\n/**\n * Port from auth proactiverefresh.js\n *\n */\n// TODO: move it to @firebase/util?\n// TODO: allow to config whether refresh should happen in the background\nexport class Refresher {\n  private pending: Deferred<unknown> | null = null;\n  private nextErrorWaitInterval: number;\n  constructor(\n    private readonly operation: () => Promise<unknown>,\n    private readonly retryPolicy: (error: unknown) => boolean,\n    private readonly getWaitDuration: () => number,\n    private readonly lowerBound: number,\n    private readonly upperBound: number\n  ) {\n    this.nextErrorWaitInterval = lowerBound;\n\n    if (lowerBound > upperBound) {\n      throw new Error(\n        'Proactive refresh lower bound greater than upper bound!'\n      );\n    }\n  }\n\n  start(): void {\n    this.nextErrorWaitInterval = this.lowerBound;\n    this.process(true).catch(() => {\n      /* we don't care about the result */\n    });\n  }\n\n  stop(): void {\n    if (this.pending) {\n      this.pending.reject('cancelled');\n      this.pending = null;\n    }\n  }\n\n  isRunning(): boolean {\n    return !!this.pending;\n  }\n\n  private async process(hasSucceeded: boolean): Promise<void> {\n    this.stop();\n    try {\n      this.pending = new Deferred();\n      this.pending.promise.catch(_e => {\n        /* ignore */\n      });\n      await sleep(this.getNextRun(hasSucceeded));\n\n      // Why do we resolve a promise, then immediate wait for it?\n      // We do it to make the promise chain cancellable.\n      // We can call stop() which rejects the promise before the following line execute, which makes\n      // the code jump to the catch block.\n      // TODO: unit test this\n      this.pending.resolve();\n      await this.pending.promise;\n      this.pending = new Deferred();\n      this.pending.promise.catch(_e => {\n        /* ignore */\n      });\n      await this.operation();\n\n      this.pending.resolve();\n      await this.pending.promise;\n\n      this.process(true).catch(() => {\n        /* we don't care about the result */\n      });\n    } catch (error) {\n      if (this.retryPolicy(error)) {\n        this.process(false).catch(() => {\n          /* we don't care about the result */\n        });\n      } else {\n        this.stop();\n      }\n    }\n  }\n\n  private getNextRun(hasSucceeded: boolean): number {\n    if (hasSucceeded) {\n      // If last operation succeeded, reset next error wait interval and return\n      // the default wait duration.\n      this.nextErrorWaitInterval = this.lowerBound;\n      // Return typical wait duration interval after a successful operation.\n      return this.getWaitDuration();\n    } else {\n      // Get next error wait interval.\n      const currentErrorWaitInterval = this.nextErrorWaitInterval;\n      // Double interval for next consecutive error.\n      this.nextErrorWaitInterval *= 2;\n      // Make sure next wait interval does not exceed the maximum upper bound.\n      if (this.nextErrorWaitInterval > this.upperBound) {\n        this.nextErrorWaitInterval = this.upperBound;\n      }\n      return currentErrorWaitInterval;\n    }\n  }\n}\n\nfunction sleep(ms: number): Promise<void> {\n  return new Promise<void>(resolve => {\n    setTimeout(resolve, ms);\n  });\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ErrorFactory, ErrorMap } from '@firebase/util';\n\nexport const enum AppCheckError {\n  ALREADY_INITIALIZED = 'already-initialized',\n  USE_BEFORE_ACTIVATION = 'use-before-activation',\n  FETCH_NETWORK_ERROR = 'fetch-network-error',\n  FETCH_PARSE_ERROR = 'fetch-parse-error',\n  FETCH_STATUS_ERROR = 'fetch-status-error',\n  STORAGE_OPEN = 'storage-open',\n  STORAGE_GET = 'storage-get',\n  STORAGE_WRITE = 'storage-set',\n  RECAPTCHA_ERROR = 'recaptcha-error',\n  INITIAL_THROTTLE = 'initial-throttle',\n  THROTTLED = 'throttled'\n}\n\nconst ERRORS: ErrorMap<AppCheckError> = {\n  [AppCheckError.ALREADY_INITIALIZED]:\n    'You have already called initializeAppCheck() for FirebaseApp {$appName} with ' +\n    'different options. To avoid this error, call initializeAppCheck() with the ' +\n    'same options as when it was originally called. This will return the ' +\n    'already initialized instance.',\n  [AppCheckError.USE_BEFORE_ACTIVATION]:\n    'App Check is being used before initializeAppCheck() is called for FirebaseApp {$appName}. ' +\n    'Call initializeAppCheck() before instantiating other Firebase services.',\n  [AppCheckError.FETCH_NETWORK_ERROR]:\n    'Fetch failed to connect to a network. Check Internet connection. ' +\n    'Original error: {$originalErrorMessage}.',\n  [AppCheckError.FETCH_PARSE_ERROR]:\n    'Fetch client could not parse response.' +\n    ' Original error: {$originalErrorMessage}.',\n  [AppCheckError.FETCH_STATUS_ERROR]:\n    'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',\n  [AppCheckError.STORAGE_OPEN]:\n    'Error thrown when opening storage. Original error: {$originalErrorMessage}.',\n  [AppCheckError.STORAGE_GET]:\n    'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',\n  [AppCheckError.STORAGE_WRITE]:\n    'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',\n  [AppCheckError.RECAPTCHA_ERROR]: 'ReCAPTCHA error.',\n  [AppCheckError.INITIAL_THROTTLE]: `{$httpStatus} error. Attempts allowed again after {$time}`,\n  [AppCheckError.THROTTLED]: `Requests throttled due to previous {$httpStatus} error. Attempts allowed again after {$time}`\n};\n\ninterface ErrorParams {\n  [AppCheckError.ALREADY_INITIALIZED]: { appName: string };\n  [AppCheckError.USE_BEFORE_ACTIVATION]: { appName: string };\n  [AppCheckError.FETCH_NETWORK_ERROR]: { originalErrorMessage: string };\n  [AppCheckError.FETCH_PARSE_ERROR]: { originalErrorMessage: string };\n  [AppCheckError.FETCH_STATUS_ERROR]: { httpStatus: number };\n  [AppCheckError.STORAGE_OPEN]: { originalErrorMessage?: string };\n  [AppCheckError.STORAGE_GET]: { originalErrorMessage?: string };\n  [AppCheckError.STORAGE_WRITE]: { originalErrorMessage?: string };\n  [AppCheckError.INITIAL_THROTTLE]: { time: string; httpStatus: number };\n  [AppCheckError.THROTTLED]: { time: string; httpStatus: number };\n}\n\nexport const ERROR_FACTORY = new ErrorFactory<AppCheckError, ErrorParams>(\n  'appCheck',\n  'AppCheck',\n  ERRORS\n);\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { GreCAPTCHA } from './recaptcha';\nimport { getStateReference } from './state';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport { FirebaseApp } from '@firebase/app';\n\nexport function getRecaptcha(\n  isEnterprise: boolean = false\n): GreCAPTCHA | undefined {\n  if (isEnterprise) {\n    return self.grecaptcha?.enterprise;\n  }\n  return self.grecaptcha;\n}\n\nexport function ensureActivated(app: FirebaseApp): void {\n  if (!getStateReference(app).activated) {\n    throw ERROR_FACTORY.create(AppCheckError.USE_BEFORE_ACTIVATION, {\n      appName: app.name\n    });\n  }\n}\n\nexport function getDurationString(durationInMillis: number): string {\n  const totalSeconds = Math.round(durationInMillis / 1000);\n  const days = Math.floor(totalSeconds / (3600 * 24));\n  const hours = Math.floor((totalSeconds - days * 3600 * 24) / 3600);\n  const minutes = Math.floor(\n    (totalSeconds - days * 3600 * 24 - hours * 3600) / 60\n  );\n  const seconds = totalSeconds - days * 3600 * 24 - hours * 3600 - minutes * 60;\n\n  let result = '';\n  if (days) {\n    result += pad(days) + 'd:';\n  }\n  if (hours) {\n    result += pad(hours) + 'h:';\n  }\n  result += pad(minutes) + 'm:' + pad(seconds) + 's';\n  return result;\n}\n\nfunction pad(value: number): string {\n  if (value === 0) {\n    return '00';\n  }\n  return value >= 10 ? value.toString() : '0' + value;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  BASE_ENDPOINT,\n  EXCHANGE_DEBUG_TOKEN_METHOD,\n  EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD,\n  EXCHANGE_RECAPTCHA_TOKEN_METHOD\n} from './constants';\nimport { FirebaseApp } from '@firebase/app';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport { Provider } from '@firebase/component';\nimport { AppCheckTokenInternal } from './types';\n\n/**\n * Response JSON returned from AppCheck server endpoint.\n */\ninterface AppCheckResponse {\n  token: string;\n  // timeToLive\n  ttl: string;\n}\n\ninterface AppCheckRequest {\n  url: string;\n  body: { [key: string]: string };\n}\n\nexport async function exchangeToken(\n  { url, body }: AppCheckRequest,\n  heartbeatServiceProvider: Provider<'heartbeat'>\n): Promise<AppCheckTokenInternal> {\n  const headers: HeadersInit = {\n    'Content-Type': 'application/json'\n  };\n  // If heartbeat service exists, add heartbeat header string to the header.\n  const heartbeatService = heartbeatServiceProvider.getImmediate({\n    optional: true\n  });\n  if (heartbeatService) {\n    const heartbeatsHeader = await heartbeatService.getHeartbeatsHeader();\n    if (heartbeatsHeader) {\n      headers['X-Firebase-Client'] = heartbeatsHeader;\n    }\n  }\n  const options: RequestInit = {\n    method: 'POST',\n    body: JSON.stringify(body),\n    headers\n  };\n  let response;\n  try {\n    response = await fetch(url, options);\n  } catch (originalError) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_NETWORK_ERROR, {\n      originalErrorMessage: (originalError as Error)?.message\n    });\n  }\n\n  if (response.status !== 200) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_STATUS_ERROR, {\n      httpStatus: response.status\n    });\n  }\n\n  let responseBody: AppCheckResponse;\n  try {\n    // JSON parsing throws SyntaxError if the response body isn't a JSON string.\n    responseBody = await response.json();\n  } catch (originalError) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_PARSE_ERROR, {\n      originalErrorMessage: (originalError as Error)?.message\n    });\n  }\n\n  // Protobuf duration format.\n  // https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/Duration\n  const match = responseBody.ttl.match(/^([\\d.]+)(s)$/);\n  if (!match || !match[2] || isNaN(Number(match[1]))) {\n    throw ERROR_FACTORY.create(AppCheckError.FETCH_PARSE_ERROR, {\n      originalErrorMessage:\n        `ttl field (timeToLive) is not in standard Protobuf Duration ` +\n        `format: ${responseBody.ttl}`\n    });\n  }\n  const timeToLiveAsNumber = Number(match[1]) * 1000;\n\n  const now = Date.now();\n  return {\n    token: responseBody.token,\n    expireTimeMillis: now + timeToLiveAsNumber,\n    issuedAtTimeMillis: now\n  };\n}\n\nexport function getExchangeRecaptchaV3TokenRequest(\n  app: FirebaseApp,\n  reCAPTCHAToken: string\n): AppCheckRequest {\n  const { projectId, appId, apiKey } = app.options;\n\n  return {\n    url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_TOKEN_METHOD}?key=${apiKey}`,\n    body: {\n      'recaptcha_v3_token': reCAPTCHAToken\n    }\n  };\n}\n\nexport function getExchangeRecaptchaEnterpriseTokenRequest(\n  app: FirebaseApp,\n  reCAPTCHAToken: string\n): AppCheckRequest {\n  const { projectId, appId, apiKey } = app.options;\n\n  return {\n    url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD}?key=${apiKey}`,\n    body: {\n      'recaptcha_enterprise_token': reCAPTCHAToken\n    }\n  };\n}\n\nexport function getExchangeDebugTokenRequest(\n  app: FirebaseApp,\n  debugToken: string\n): AppCheckRequest {\n  const { projectId, appId, apiKey } = app.options;\n\n  return {\n    url: `${BASE_ENDPOINT}/projects/${projectId}/apps/${appId}:${EXCHANGE_DEBUG_TOKEN_METHOD}?key=${apiKey}`,\n    body: {\n      // eslint-disable-next-line\n      debug_token: debugToken\n    }\n  };\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport { AppCheckTokenInternal } from './types';\nconst DB_NAME = 'firebase-app-check-database';\nconst DB_VERSION = 1;\nconst STORE_NAME = 'firebase-app-check-store';\nconst DEBUG_TOKEN_KEY = 'debug-token';\n\nlet dbPromise: Promise<IDBDatabase> | null = null;\nfunction getDBPromise(): Promise<IDBDatabase> {\n  if (dbPromise) {\n    return dbPromise;\n  }\n\n  dbPromise = new Promise((resolve, reject) => {\n    try {\n      const request = indexedDB.open(DB_NAME, DB_VERSION);\n\n      request.onsuccess = event => {\n        resolve((event.target as IDBOpenDBRequest).result);\n      };\n\n      request.onerror = event => {\n        reject(\n          ERROR_FACTORY.create(AppCheckError.STORAGE_OPEN, {\n            originalErrorMessage: (event.target as IDBRequest).error?.message\n          })\n        );\n      };\n\n      request.onupgradeneeded = event => {\n        const db = (event.target as IDBOpenDBRequest).result;\n\n        // We don't use 'break' in this switch statement, the fall-through\n        // behavior is what we want, because if there are multiple versions between\n        // the old version and the current version, we want ALL the migrations\n        // that correspond to those versions to run, not only the last one.\n        // eslint-disable-next-line default-case\n        switch (event.oldVersion) {\n          case 0:\n            db.createObjectStore(STORE_NAME, {\n              keyPath: 'compositeKey'\n            });\n        }\n      };\n    } catch (e) {\n      reject(\n        ERROR_FACTORY.create(AppCheckError.STORAGE_OPEN, {\n          originalErrorMessage: (e as Error)?.message\n        })\n      );\n    }\n  });\n\n  return dbPromise;\n}\n\nexport function readTokenFromIndexedDB(\n  app: FirebaseApp\n): Promise<AppCheckTokenInternal | undefined> {\n  return read(computeKey(app)) as Promise<AppCheckTokenInternal | undefined>;\n}\n\nexport function writeTokenToIndexedDB(\n  app: FirebaseApp,\n  token?: AppCheckTokenInternal\n): Promise<void> {\n  return write(computeKey(app), token);\n}\n\nexport function writeDebugTokenToIndexedDB(token: string): Promise<void> {\n  return write(DEBUG_TOKEN_KEY, token);\n}\n\nexport function readDebugTokenFromIndexedDB(): Promise<string | undefined> {\n  return read(DEBUG_TOKEN_KEY) as Promise<string | undefined>;\n}\n\nasync function write(key: string, value: unknown): Promise<void> {\n  const db = await getDBPromise();\n\n  const transaction = db.transaction(STORE_NAME, 'readwrite');\n  const store = transaction.objectStore(STORE_NAME);\n  const request = store.put({\n    compositeKey: key,\n    value\n  });\n\n  return new Promise((resolve, reject) => {\n    request.onsuccess = _event => {\n      resolve();\n    };\n\n    transaction.onerror = event => {\n      reject(\n        ERROR_FACTORY.create(AppCheckError.STORAGE_WRITE, {\n          originalErrorMessage: (event.target as IDBRequest).error?.message\n        })\n      );\n    };\n  });\n}\n\nasync function read(key: string): Promise<unknown> {\n  const db = await getDBPromise();\n\n  const transaction = db.transaction(STORE_NAME, 'readonly');\n  const store = transaction.objectStore(STORE_NAME);\n  const request = store.get(key);\n\n  return new Promise((resolve, reject) => {\n    request.onsuccess = event => {\n      const result = (event.target as IDBRequest).result;\n\n      if (result) {\n        resolve(result.value);\n      } else {\n        resolve(undefined);\n      }\n    };\n\n    transaction.onerror = event => {\n      reject(\n        ERROR_FACTORY.create(AppCheckError.STORAGE_GET, {\n          originalErrorMessage: (event.target as IDBRequest).error?.message\n        })\n      );\n    };\n  });\n}\n\nfunction computeKey(app: FirebaseApp): string {\n  return `${app.options.appId}-${app.name}`;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Logger } from '@firebase/logger';\n\nexport const logger = new Logger('@firebase/app-check');\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport { isIndexedDBAvailable } from '@firebase/util';\nimport {\n  readDebugTokenFromIndexedDB,\n  readTokenFromIndexedDB,\n  writeDebugTokenToIndexedDB,\n  writeTokenToIndexedDB\n} from './indexeddb';\nimport { logger } from './logger';\nimport { AppCheckTokenInternal } from './types';\n\n/**\n * Always resolves. In case of an error reading from indexeddb, resolve with undefined\n */\nexport async function readTokenFromStorage(\n  app: FirebaseApp\n): Promise<AppCheckTokenInternal | undefined> {\n  if (isIndexedDBAvailable()) {\n    let token = undefined;\n    try {\n      token = await readTokenFromIndexedDB(app);\n    } catch (e) {\n      // swallow the error and return undefined\n      logger.warn(`Failed to read token from IndexedDB. Error: ${e}`);\n    }\n    return token;\n  }\n\n  return undefined;\n}\n\n/**\n * Always resolves. In case of an error writing to indexeddb, print a warning and resolve the promise\n */\nexport function writeTokenToStorage(\n  app: FirebaseApp,\n  token?: AppCheckTokenInternal\n): Promise<void> {\n  if (isIndexedDBAvailable()) {\n    return writeTokenToIndexedDB(app, token).catch(e => {\n      // swallow the error and resolve the promise\n      logger.warn(`Failed to write token to IndexedDB. Error: ${e}`);\n    });\n  }\n\n  return Promise.resolve();\n}\n\nexport async function readOrCreateDebugTokenFromStorage(): Promise<string> {\n  /**\n   * Theoretically race condition can happen if we read, then write in 2 separate transactions.\n   * But it won't happen here, because this function will be called exactly once.\n   */\n  let existingDebugToken: string | undefined = undefined;\n  try {\n    existingDebugToken = await readDebugTokenFromIndexedDB();\n  } catch (_e) {\n    // failed to read from indexeddb. We assume there is no existing debug token, and generate a new one.\n  }\n\n  if (!existingDebugToken) {\n    // create a new debug token\n    // This function is only available in secure contexts. See https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts\n    const newToken = crypto.randomUUID();\n    // We don't need to block on writing to indexeddb\n    // In case persistence failed, a new debug token will be generated every time the page is refreshed.\n    // It renders the debug token useless because you have to manually register(whitelist) the new token in the firebase console again and again.\n    // If you see this error trying to use debug token, it probably means you are using a browser that doesn't support indexeddb.\n    // You should switch to a different browser that supports indexeddb\n    writeDebugTokenToIndexedDB(newToken).catch(e =>\n      logger.warn(`Failed to persist debug token to IndexedDB. Error: ${e}`)\n    );\n    return newToken;\n  } else {\n    return existingDebugToken;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { getDebugState } from './state';\nimport { readOrCreateDebugTokenFromStorage } from './storage';\nimport { Deferred, getGlobal } from '@firebase/util';\n\ndeclare global {\n  // var must be used for global scopes\n  // https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-4.html#type-checking-for-globalthis\n  // eslint-disable-next-line no-var\n  var FIREBASE_APPCHECK_DEBUG_TOKEN: boolean | string | undefined;\n}\n\nexport function isDebugMode(): boolean {\n  const debugState = getDebugState();\n  return debugState.enabled;\n}\n\nexport async function getDebugToken(): Promise<string> {\n  const state = getDebugState();\n\n  if (state.enabled && state.token) {\n    return state.token.promise;\n  } else {\n    // should not happen!\n    throw Error(`\n            Can't get debug token in production mode.\n        `);\n  }\n}\n\nexport function initializeDebugMode(): void {\n  const globals = getGlobal();\n  const debugState = getDebugState();\n  // Set to true if this function has been called, whether or not\n  // it enabled debug mode.\n  debugState.initialized = true;\n\n  if (\n    typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== 'string' &&\n    globals.FIREBASE_APPCHECK_DEBUG_TOKEN !== true\n  ) {\n    return;\n  }\n\n  debugState.enabled = true;\n  const deferredToken = new Deferred<string>();\n  debugState.token = deferredToken;\n\n  if (typeof globals.FIREBASE_APPCHECK_DEBUG_TOKEN === 'string') {\n    deferredToken.resolve(globals.FIREBASE_APPCHECK_DEBUG_TOKEN);\n  } else {\n    deferredToken.resolve(readOrCreateDebugTokenFromStorage());\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport {\n  AppCheckTokenResult,\n  AppCheckTokenInternal,\n  AppCheckTokenObserver,\n  ListenerType\n} from './types';\nimport { AppCheckTokenListener } from './public-types';\nimport { getStateReference } from './state';\nimport { TOKEN_REFRESH_TIME } from './constants';\nimport { Refresher } from './proactive-refresh';\nimport { ensureActivated } from './util';\nimport { exchangeToken, getExchangeDebugTokenRequest } from './client';\nimport { writeTokenToStorage } from './storage';\nimport { getDebugToken, isDebugMode } from './debug';\nimport { base64, FirebaseError } from '@firebase/util';\nimport { logger } from './logger';\nimport { AppCheckService } from './factory';\nimport { AppCheckError } from './errors';\n\n// Initial hardcoded value agreed upon across platforms for initial launch.\n// Format left open for possible dynamic error values and other fields in the future.\nexport const defaultTokenErrorData = { error: 'UNKNOWN_ERROR' };\n\n/**\n * Stringify and base64 encode token error data.\n *\n * @param tokenError Error data, currently hardcoded.\n */\nexport function formatDummyToken(\n  tokenErrorData: Record<string, string>\n): string {\n  return base64.encodeString(\n    JSON.stringify(tokenErrorData),\n    /* webSafe= */ false\n  );\n}\n\n/**\n * This function always resolves.\n * The result will contain an error field if there is any error.\n * In case there is an error, the token field in the result will be populated with a dummy value\n */\nexport async function getToken(\n  appCheck: AppCheckService,\n  forceRefresh = false,\n  shouldLogErrors = false\n): Promise<AppCheckTokenResult> {\n  const app = appCheck.app;\n  ensureActivated(app);\n\n  const state = getStateReference(app);\n\n  /**\n   * First check if there is a token in memory from a previous `getToken()` call.\n   */\n  let token: AppCheckTokenInternal | undefined = state.token;\n  let error: Error | undefined = undefined;\n\n  /**\n   * If an invalid token was found in memory, clear token from\n   * memory and unset the local variable `token`.\n   */\n  if (token && !isValid(token)) {\n    state.token = undefined;\n    token = undefined;\n  }\n\n  /**\n   * If there is no valid token in memory, try to load token from indexedDB.\n   */\n  if (!token) {\n    // cachedTokenPromise contains the token found in IndexedDB or undefined if not found.\n    const cachedToken = await state.cachedTokenPromise;\n    if (cachedToken) {\n      if (isValid(cachedToken)) {\n        token = cachedToken;\n      } else {\n        // If there was an invalid token in the indexedDB cache, clear it.\n        await writeTokenToStorage(app, undefined);\n      }\n    }\n  }\n\n  // Return the cached token (from either memory or indexedDB) if it's valid\n  if (!forceRefresh && token && isValid(token)) {\n    return {\n      token: token.token\n    };\n  }\n\n  // Only set to true if this `getToken()` call is making the actual\n  // REST call to the exchange endpoint, versus waiting for an already\n  // in-flight call (see debug and regular exchange endpoint paths below)\n  let shouldCallListeners = false;\n\n  /**\n   * DEBUG MODE\n   * If debug mode is set, and there is no cached token, fetch a new App\n   * Check token using the debug token, and return it directly.\n   */\n  if (isDebugMode()) {\n    try {\n      // Avoid making another call to the exchange endpoint if one is in flight.\n      if (!state.exchangeTokenPromise) {\n        state.exchangeTokenPromise = exchangeToken(\n          getExchangeDebugTokenRequest(app, await getDebugToken()),\n          appCheck.heartbeatServiceProvider\n        ).finally(() => {\n          // Clear promise when settled - either resolved or rejected.\n          state.exchangeTokenPromise = undefined;\n        });\n        shouldCallListeners = true;\n      }\n      const tokenFromDebugExchange: AppCheckTokenInternal =\n        await state.exchangeTokenPromise;\n      // Write debug token to indexedDB.\n      await writeTokenToStorage(app, tokenFromDebugExchange);\n      // Write debug token to state.\n      state.token = tokenFromDebugExchange;\n      return { token: tokenFromDebugExchange.token };\n    } catch (e) {\n      if (\n        (e as FirebaseError).code === `appCheck/${AppCheckError.THROTTLED}` ||\n        (e as FirebaseError).code ===\n          `appCheck/${AppCheckError.INITIAL_THROTTLE}`\n      ) {\n        // Warn if throttled, but do not treat it as an error.\n        logger.warn((e as FirebaseError).message);\n      } else if (shouldLogErrors) {\n        logger.error(e);\n      }\n      // Return dummy token and error\n      return makeDummyTokenResult(e as FirebaseError);\n    }\n  }\n\n  /**\n   * There are no valid tokens in memory or indexedDB and we are not in\n   * debug mode.\n   * Request a new token from the exchange endpoint.\n   */\n  try {\n    // Avoid making another call to the exchange endpoint if one is in flight.\n    if (!state.exchangeTokenPromise) {\n      // state.provider is populated in initializeAppCheck()\n      // ensureActivated() at the top of this function checks that\n      // initializeAppCheck() has been called.\n      state.exchangeTokenPromise = state.provider!.getToken().finally(() => {\n        // Clear promise when settled - either resolved or rejected.\n        state.exchangeTokenPromise = undefined;\n      });\n      shouldCallListeners = true;\n    }\n    token = await getStateReference(app).exchangeTokenPromise;\n  } catch (e) {\n    if (\n      (e as FirebaseError).code === `appCheck/${AppCheckError.THROTTLED}` ||\n      (e as FirebaseError).code === `appCheck/${AppCheckError.INITIAL_THROTTLE}`\n    ) {\n      // Warn if throttled, but do not treat it as an error.\n      logger.warn((e as FirebaseError).message);\n    } else if (shouldLogErrors) {\n      logger.error(e);\n    }\n    // Always save error to be added to dummy token.\n    error = e as FirebaseError;\n  }\n\n  let interopTokenResult: AppCheckTokenResult | undefined;\n  if (!token) {\n    // If token is undefined, there must be an error.\n    // Return a dummy token along with the error.\n    interopTokenResult = makeDummyTokenResult(error!);\n  } else if (error) {\n    if (isValid(token)) {\n      // It's also possible a valid token exists, but there's also an error.\n      // (Such as if the token is almost expired, tries to refresh, and\n      // the exchange request fails.)\n      // We add a special error property here so that the refresher will\n      // count this as a failed attempt and use the backoff instead of\n      // retrying repeatedly with no delay, but any 3P listeners will not\n      // be hindered in getting the still-valid token.\n      interopTokenResult = {\n        token: token.token,\n        internalError: error\n      };\n    } else {\n      // No invalid tokens should make it to this step. Memory and cached tokens\n      // are checked. Other tokens are from fresh exchanges. But just in case.\n      interopTokenResult = makeDummyTokenResult(error!);\n    }\n  } else {\n    interopTokenResult = {\n      token: token.token\n    };\n    // write the new token to the memory state as well as the persistent storage.\n    // Only do it if we got a valid new token\n    state.token = token;\n    await writeTokenToStorage(app, token);\n  }\n\n  if (shouldCallListeners) {\n    notifyTokenListeners(app, interopTokenResult);\n  }\n  return interopTokenResult;\n}\n\n/**\n * Internal API for limited use tokens. Skips all FAC state and simply calls\n * the underlying provider.\n */\nexport async function getLimitedUseToken(\n  appCheck: AppCheckService\n): Promise<AppCheckTokenResult> {\n  const app = appCheck.app;\n  ensureActivated(app);\n\n  const { provider } = getStateReference(app);\n\n  if (isDebugMode()) {\n    const debugToken = await getDebugToken();\n    const { token } = await exchangeToken(\n      getExchangeDebugTokenRequest(app, debugToken),\n      appCheck.heartbeatServiceProvider\n    );\n    return { token };\n  } else {\n    // provider is definitely valid since we ensure AppCheck was activated\n    const { token } = await provider!.getToken();\n    return { token };\n  }\n}\n\nexport function addTokenListener(\n  appCheck: AppCheckService,\n  type: ListenerType,\n  listener: AppCheckTokenListener,\n  onError?: (error: Error) => void\n): void {\n  const { app } = appCheck;\n  const state = getStateReference(app);\n  const tokenObserver: AppCheckTokenObserver = {\n    next: listener,\n    error: onError,\n    type\n  };\n  state.tokenObservers = [...state.tokenObservers, tokenObserver];\n\n  // Invoke the listener async immediately if there is a valid token\n  // in memory.\n  if (state.token && isValid(state.token)) {\n    const validToken = state.token;\n    Promise.resolve()\n      .then(() => {\n        listener({ token: validToken.token });\n        initTokenRefresher(appCheck);\n      })\n      .catch(() => {\n        /* we don't care about exceptions thrown in listeners */\n      });\n  }\n\n  /**\n   * Wait for any cached token promise to resolve before starting the token\n   * refresher. The refresher checks to see if there is an existing token\n   * in state and calls the exchange endpoint if not. We should first let the\n   * IndexedDB check have a chance to populate state if it can.\n   *\n   * Listener call isn't needed here because cachedTokenPromise will call any\n   * listeners that exist when it resolves.\n   */\n\n  // state.cachedTokenPromise is always populated in `activate()`.\n  void state.cachedTokenPromise!.then(() => initTokenRefresher(appCheck));\n}\n\nexport function removeTokenListener(\n  app: FirebaseApp,\n  listener: AppCheckTokenListener\n): void {\n  const state = getStateReference(app);\n\n  const newObservers = state.tokenObservers.filter(\n    tokenObserver => tokenObserver.next !== listener\n  );\n  if (\n    newObservers.length === 0 &&\n    state.tokenRefresher &&\n    state.tokenRefresher.isRunning()\n  ) {\n    state.tokenRefresher.stop();\n  }\n\n  state.tokenObservers = newObservers;\n}\n\n/**\n * Logic to create and start refresher as needed.\n */\nfunction initTokenRefresher(appCheck: AppCheckService): void {\n  const { app } = appCheck;\n  const state = getStateReference(app);\n  // Create the refresher but don't start it if `isTokenAutoRefreshEnabled`\n  // is not true.\n  let refresher: Refresher | undefined = state.tokenRefresher;\n  if (!refresher) {\n    refresher = createTokenRefresher(appCheck);\n    state.tokenRefresher = refresher;\n  }\n  if (!refresher.isRunning() && state.isTokenAutoRefreshEnabled) {\n    refresher.start();\n  }\n}\n\nfunction createTokenRefresher(appCheck: AppCheckService): Refresher {\n  const { app } = appCheck;\n  return new Refresher(\n    // Keep in mind when this fails for any reason other than the ones\n    // for which we should retry, it will effectively stop the proactive refresh.\n    async () => {\n      const state = getStateReference(app);\n      // If there is no token, we will try to load it from storage and use it\n      // If there is a token, we force refresh it because we know it's going to expire soon\n      let result;\n      if (!state.token) {\n        result = await getToken(appCheck);\n      } else {\n        result = await getToken(appCheck, true);\n      }\n\n      /**\n       * getToken() always resolves. In case the result has an error field defined, it means\n       * the operation failed, and we should retry.\n       */\n      if (result.error) {\n        throw result.error;\n      }\n      /**\n       * A special `internalError` field reflects that there was an error\n       * getting a new token from the exchange endpoint, but there's still a\n       * previous token that's valid for now and this should be passed to 2P/3P\n       * requests for a token. But we want this callback (`this.operation` in\n       * `Refresher`) to throw in order to kick off the Refresher's retry\n       * backoff. (Setting `hasSucceeded` to false.)\n       */\n      if (result.internalError) {\n        throw result.internalError;\n      }\n    },\n    () => {\n      return true;\n    },\n    () => {\n      const state = getStateReference(app);\n\n      if (state.token) {\n        // issuedAtTime + (50% * total TTL) + 5 minutes\n        let nextRefreshTimeMillis =\n          state.token.issuedAtTimeMillis +\n          (state.token.expireTimeMillis - state.token.issuedAtTimeMillis) *\n            0.5 +\n          5 * 60 * 1000;\n        // Do not allow refresh time to be past (expireTime - 5 minutes)\n        const latestAllowableRefresh =\n          state.token.expireTimeMillis - 5 * 60 * 1000;\n        nextRefreshTimeMillis = Math.min(\n          nextRefreshTimeMillis,\n          latestAllowableRefresh\n        );\n        return Math.max(0, nextRefreshTimeMillis - Date.now());\n      } else {\n        return 0;\n      }\n    },\n    TOKEN_REFRESH_TIME.RETRIAL_MIN_WAIT,\n    TOKEN_REFRESH_TIME.RETRIAL_MAX_WAIT\n  );\n}\n\nexport function notifyTokenListeners(\n  app: FirebaseApp,\n  token: AppCheckTokenResult\n): void {\n  const observers = getStateReference(app).tokenObservers;\n\n  for (const observer of observers) {\n    try {\n      if (observer.type === ListenerType.EXTERNAL && token.error != null) {\n        // If this listener was added by a 3P call, send any token error to\n        // the supplied error handler. A 3P observer always has an error\n        // handler.\n        observer.error!(token.error);\n      } else {\n        // If the token has no error field, always return the token.\n        // If this is a 2P listener, return the token, whether or not it\n        // has an error field.\n        observer.next(token);\n      }\n    } catch (e) {\n      // Errors in the listener function itself are always ignored.\n    }\n  }\n}\n\nexport function isValid(token: AppCheckTokenInternal): boolean {\n  return token.expireTimeMillis - Date.now() > 0;\n}\n\nfunction makeDummyTokenResult(error: Error): AppCheckTokenResult {\n  return {\n    token: formatDummyToken(defaultTokenErrorData),\n    error\n  };\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { AppCheck } from './public-types';\nimport { FirebaseApp, _FirebaseService } from '@firebase/app';\nimport { FirebaseAppCheckInternal, ListenerType } from './types';\nimport {\n  getToken,\n  getLimitedUseToken,\n  addTokenListener,\n  removeTokenListener\n} from './internal-api';\nimport { Provider } from '@firebase/component';\nimport { getStateReference } from './state';\n\n/**\n * AppCheck Service class.\n */\nexport class AppCheckService implements AppCheck, _FirebaseService {\n  constructor(\n    public app: FirebaseApp,\n    public heartbeatServiceProvider: Provider<'heartbeat'>\n  ) {}\n  _delete(): Promise<void> {\n    const { tokenObservers } = getStateReference(this.app);\n    for (const tokenObserver of tokenObservers) {\n      removeTokenListener(this.app, tokenObserver.next);\n    }\n    return Promise.resolve();\n  }\n}\n\nexport function factory(\n  app: FirebaseApp,\n  heartbeatServiceProvider: Provider<'heartbeat'>\n): AppCheckService {\n  return new AppCheckService(app, heartbeatServiceProvider);\n}\n\nexport function internalFactory(\n  appCheck: AppCheckService\n): FirebaseAppCheckInternal {\n  return {\n    getToken: forceRefresh => getToken(appCheck, forceRefresh),\n    getLimitedUseToken: () => getLimitedUseToken(appCheck),\n    addTokenListener: listener =>\n      addTokenListener(appCheck, ListenerType.INTERNAL, listener),\n    removeTokenListener: listener => removeTokenListener(appCheck.app, listener)\n  };\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport { getStateReference } from './state';\nimport { Deferred } from '@firebase/util';\nimport { getRecaptcha, ensureActivated } from './util';\n\nexport const RECAPTCHA_URL = 'https://www.google.com/recaptcha/api.js';\nexport const RECAPTCHA_ENTERPRISE_URL =\n  'https://www.google.com/recaptcha/enterprise.js';\n\nexport function initializeV3(\n  app: FirebaseApp,\n  siteKey: string\n): Promise<GreCAPTCHA> {\n  const initialized = new Deferred<GreCAPTCHA>();\n\n  const state = getStateReference(app);\n  state.reCAPTCHAState = { initialized };\n\n  const divId = makeDiv(app);\n\n  const grecaptcha = getRecaptcha(false);\n  if (!grecaptcha) {\n    loadReCAPTCHAV3Script(() => {\n      const grecaptcha = getRecaptcha(false);\n\n      if (!grecaptcha) {\n        // it shouldn't happen.\n        throw new Error('no recaptcha');\n      }\n      queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n    });\n  } else {\n    queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n  }\n  return initialized.promise;\n}\nexport function initializeEnterprise(\n  app: FirebaseApp,\n  siteKey: string\n): Promise<GreCAPTCHA> {\n  const initialized = new Deferred<GreCAPTCHA>();\n\n  const state = getStateReference(app);\n  state.reCAPTCHAState = { initialized };\n\n  const divId = makeDiv(app);\n\n  const grecaptcha = getRecaptcha(true);\n  if (!grecaptcha) {\n    loadReCAPTCHAEnterpriseScript(() => {\n      const grecaptcha = getRecaptcha(true);\n\n      if (!grecaptcha) {\n        // it shouldn't happen.\n        throw new Error('no recaptcha');\n      }\n      queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n    });\n  } else {\n    queueWidgetRender(app, siteKey, grecaptcha, divId, initialized);\n  }\n  return initialized.promise;\n}\n\n/**\n * Add listener to render the widget and resolve the promise when\n * the grecaptcha.ready() event fires.\n */\nfunction queueWidgetRender(\n  app: FirebaseApp,\n  siteKey: string,\n  grecaptcha: GreCAPTCHA,\n  container: string,\n  initialized: Deferred<GreCAPTCHA>\n): void {\n  grecaptcha.ready(() => {\n    // Invisible widgets allow us to set a different siteKey for each widget,\n    // so we use them to support multiple apps\n    renderInvisibleWidget(app, siteKey, grecaptcha, container);\n    initialized.resolve(grecaptcha);\n  });\n}\n\n/**\n * Add invisible div to page.\n */\nfunction makeDiv(app: FirebaseApp): string {\n  const divId = `fire_app_check_${app.name}`;\n  const invisibleDiv = document.createElement('div');\n  invisibleDiv.id = divId;\n  invisibleDiv.style.display = 'none';\n\n  document.body.appendChild(invisibleDiv);\n  return divId;\n}\n\nexport async function getToken(app: FirebaseApp): Promise<string> {\n  ensureActivated(app);\n\n  // ensureActivated() guarantees that reCAPTCHAState is set\n  const reCAPTCHAState = getStateReference(app).reCAPTCHAState!;\n  const recaptcha = await reCAPTCHAState.initialized.promise;\n\n  return new Promise((resolve, _reject) => {\n    // Updated after initialization is complete.\n    const reCAPTCHAState = getStateReference(app).reCAPTCHAState!;\n    recaptcha.ready(() => {\n      resolve(\n        // widgetId is guaranteed to be available if reCAPTCHAState.initialized.promise resolved.\n        recaptcha.execute(reCAPTCHAState.widgetId!, {\n          action: 'fire_app_check'\n        })\n      );\n    });\n  });\n}\n\n/**\n *\n * @param app\n * @param container - Id of a HTML element.\n */\nfunction renderInvisibleWidget(\n  app: FirebaseApp,\n  siteKey: string,\n  grecaptcha: GreCAPTCHA,\n  container: string\n): void {\n  const widgetId = grecaptcha.render(container, {\n    sitekey: siteKey,\n    size: 'invisible',\n    // Success callback - set state\n    callback: () => {\n      getStateReference(app).reCAPTCHAState!.succeeded = true;\n    },\n    // Failure callback - set state\n    'error-callback': () => {\n      getStateReference(app).reCAPTCHAState!.succeeded = false;\n    }\n  });\n\n  const state = getStateReference(app);\n\n  state.reCAPTCHAState = {\n    ...state.reCAPTCHAState!, // state.reCAPTCHAState is set in the initialize()\n    widgetId\n  };\n}\n\nfunction loadReCAPTCHAV3Script(onload: () => void): void {\n  const script = document.createElement('script');\n  script.src = RECAPTCHA_URL;\n  script.onload = onload;\n  document.head.appendChild(script);\n}\n\nfunction loadReCAPTCHAEnterpriseScript(onload: () => void): void {\n  const script = document.createElement('script');\n  script.src = RECAPTCHA_ENTERPRISE_URL;\n  script.onload = onload;\n  document.head.appendChild(script);\n}\n\ndeclare global {\n  interface Window {\n    grecaptcha: GreCAPTCHATopLevel | undefined;\n  }\n}\n\nexport interface GreCAPTCHATopLevel extends GreCAPTCHA {\n  enterprise: GreCAPTCHA;\n}\n\nexport interface GreCAPTCHA {\n  ready: (callback: () => void) => void;\n  execute: (siteKey: string, options: { action: string }) => Promise<string>;\n  render: (\n    container: string | HTMLElement,\n    parameters: GreCAPTCHARenderOption\n  ) => string;\n}\n\nexport interface GreCAPTCHARenderOption {\n  sitekey: string;\n  size: 'invisible';\n  callback: () => void;\n  'error-callback': () => void;\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp, _getProvider } from '@firebase/app';\nimport { Provider } from '@firebase/component';\nimport {\n  FirebaseError,\n  issuedAtTime,\n  calculateBackoffMillis\n} from '@firebase/util';\nimport {\n  exchangeToken,\n  getExchangeRecaptchaEnterpriseTokenRequest,\n  getExchangeRecaptchaV3TokenRequest\n} from './client';\nimport { ONE_DAY } from './constants';\nimport { AppCheckError, ERROR_FACTORY } from './errors';\nimport { CustomProviderOptions } from './public-types';\nimport {\n  getToken as getReCAPTCHAToken,\n  initializeV3 as initializeRecaptchaV3,\n  initializeEnterprise as initializeRecaptchaEnterprise\n} from './recaptcha';\nimport { getStateReference } from './state';\nimport { AppCheckProvider, AppCheckTokenInternal, ThrottleData } from './types';\nimport { getDurationString } from './util';\n\n/**\n * App Check provider that can obtain a reCAPTCHA V3 token and exchange it\n * for an App Check token.\n *\n * @public\n */\nexport class ReCaptchaV3Provider implements AppCheckProvider {\n  private _app?: FirebaseApp;\n  private _heartbeatServiceProvider?: Provider<'heartbeat'>;\n  /**\n   * Throttle requests on certain error codes to prevent too many retries\n   * in a short time.\n   */\n  private _throttleData: ThrottleData | null = null;\n  /**\n   * Create a ReCaptchaV3Provider instance.\n   * @param siteKey - ReCAPTCHA V3 siteKey.\n   */\n  constructor(private _siteKey: string) {}\n\n  /**\n   * Returns an App Check token.\n   * @internal\n   */\n  async getToken(): Promise<AppCheckTokenInternal> {\n    throwIfThrottled(this._throttleData);\n\n    // Top-level `getToken()` has already checked that App Check is initialized\n    // and therefore this._app and this._heartbeatServiceProvider are available.\n    const attestedClaimsToken = await getReCAPTCHAToken(this._app!).catch(\n      _e => {\n        // reCaptcha.execute() throws null which is not very descriptive.\n        throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n      }\n    );\n    // Check if a failure state was set by the recaptcha \"error-callback\".\n    if (!getStateReference(this._app!).reCAPTCHAState?.succeeded) {\n      throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n    }\n    let result;\n    try {\n      result = await exchangeToken(\n        getExchangeRecaptchaV3TokenRequest(this._app!, attestedClaimsToken),\n        this._heartbeatServiceProvider!\n      );\n    } catch (e) {\n      if (\n        (e as FirebaseError).code?.includes(AppCheckError.FETCH_STATUS_ERROR)\n      ) {\n        this._throttleData = setBackoff(\n          Number((e as FirebaseError).customData?.httpStatus),\n          this._throttleData\n        );\n        throw ERROR_FACTORY.create(AppCheckError.INITIAL_THROTTLE, {\n          time: getDurationString(\n            this._throttleData.allowRequestsAfter - Date.now()\n          ),\n          httpStatus: this._throttleData.httpStatus\n        });\n      } else {\n        throw e;\n      }\n    }\n    // If successful, clear throttle data.\n    this._throttleData = null;\n    return result;\n  }\n\n  /**\n   * @internal\n   */\n  initialize(app: FirebaseApp): void {\n    this._app = app;\n    this._heartbeatServiceProvider = _getProvider(app, 'heartbeat');\n    initializeRecaptchaV3(app, this._siteKey).catch(() => {\n      /* we don't care about the initialization result */\n    });\n  }\n\n  /**\n   * @internal\n   */\n  isEqual(otherProvider: unknown): boolean {\n    if (otherProvider instanceof ReCaptchaV3Provider) {\n      return this._siteKey === otherProvider._siteKey;\n    } else {\n      return false;\n    }\n  }\n}\n\n/**\n * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it\n * for an App Check token.\n *\n * @public\n */\nexport class ReCaptchaEnterpriseProvider implements AppCheckProvider {\n  private _app?: FirebaseApp;\n  private _heartbeatServiceProvider?: Provider<'heartbeat'>;\n  /**\n   * Throttle requests on certain error codes to prevent too many retries\n   * in a short time.\n   */\n  private _throttleData: ThrottleData | null = null;\n  /**\n   * Create a ReCaptchaEnterpriseProvider instance.\n   * @param siteKey - reCAPTCHA Enterprise score-based site key.\n   */\n  constructor(private _siteKey: string) {}\n\n  /**\n   * Returns an App Check token.\n   * @internal\n   */\n  async getToken(): Promise<AppCheckTokenInternal> {\n    throwIfThrottled(this._throttleData);\n    // Top-level `getToken()` has already checked that App Check is initialized\n    // and therefore this._app and this._heartbeatServiceProvider are available.\n    const attestedClaimsToken = await getReCAPTCHAToken(this._app!).catch(\n      _e => {\n        // reCaptcha.execute() throws null which is not very descriptive.\n        throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n      }\n    );\n    // Check if a failure state was set by the recaptcha \"error-callback\".\n    if (!getStateReference(this._app!).reCAPTCHAState?.succeeded) {\n      throw ERROR_FACTORY.create(AppCheckError.RECAPTCHA_ERROR);\n    }\n    let result;\n    try {\n      result = await exchangeToken(\n        getExchangeRecaptchaEnterpriseTokenRequest(\n          this._app!,\n          attestedClaimsToken\n        ),\n        this._heartbeatServiceProvider!\n      );\n    } catch (e) {\n      if (\n        (e as FirebaseError).code?.includes(AppCheckError.FETCH_STATUS_ERROR)\n      ) {\n        this._throttleData = setBackoff(\n          Number((e as FirebaseError).customData?.httpStatus),\n          this._throttleData\n        );\n        throw ERROR_FACTORY.create(AppCheckError.INITIAL_THROTTLE, {\n          time: getDurationString(\n            this._throttleData.allowRequestsAfter - Date.now()\n          ),\n          httpStatus: this._throttleData.httpStatus\n        });\n      } else {\n        throw e;\n      }\n    }\n    // If successful, clear throttle data.\n    this._throttleData = null;\n    return result;\n  }\n\n  /**\n   * @internal\n   */\n  initialize(app: FirebaseApp): void {\n    this._app = app;\n    this._heartbeatServiceProvider = _getProvider(app, 'heartbeat');\n    initializeRecaptchaEnterprise(app, this._siteKey).catch(() => {\n      /* we don't care about the initialization result */\n    });\n  }\n\n  /**\n   * @internal\n   */\n  isEqual(otherProvider: unknown): boolean {\n    if (otherProvider instanceof ReCaptchaEnterpriseProvider) {\n      return this._siteKey === otherProvider._siteKey;\n    } else {\n      return false;\n    }\n  }\n}\n\n/**\n * Custom provider class.\n * @public\n */\nexport class CustomProvider implements AppCheckProvider {\n  private _app?: FirebaseApp;\n\n  constructor(private _customProviderOptions: CustomProviderOptions) {}\n\n  /**\n   * @internal\n   */\n  async getToken(): Promise<AppCheckTokenInternal> {\n    // custom provider\n    const customToken = await this._customProviderOptions.getToken();\n    // Try to extract IAT from custom token, in case this token is not\n    // being newly issued. JWT timestamps are in seconds since epoch.\n    const issuedAtTimeSeconds = issuedAtTime(customToken.token);\n    // Very basic validation, use current timestamp as IAT if JWT\n    // has no `iat` field or value is out of bounds.\n    const issuedAtTimeMillis =\n      issuedAtTimeSeconds !== null &&\n      issuedAtTimeSeconds < Date.now() &&\n      issuedAtTimeSeconds > 0\n        ? issuedAtTimeSeconds * 1000\n        : Date.now();\n\n    return { ...customToken, issuedAtTimeMillis };\n  }\n\n  /**\n   * @internal\n   */\n  initialize(app: FirebaseApp): void {\n    this._app = app;\n  }\n\n  /**\n   * @internal\n   */\n  isEqual(otherProvider: unknown): boolean {\n    if (otherProvider instanceof CustomProvider) {\n      return (\n        this._customProviderOptions.getToken.toString() ===\n        otherProvider._customProviderOptions.getToken.toString()\n      );\n    } else {\n      return false;\n    }\n  }\n}\n\n/**\n * Set throttle data to block requests until after a certain time\n * depending on the failed request's status code.\n * @param httpStatus - Status code of failed request.\n * @param throttleData - `ThrottleData` object containing previous throttle\n * data state.\n * @returns Data about current throttle state and expiration time.\n */\nfunction setBackoff(\n  httpStatus: number,\n  throttleData: ThrottleData | null\n): ThrottleData {\n  /**\n   * Block retries for 1 day for the following error codes:\n   *\n   * 404: Likely malformed URL.\n   *\n   * 403:\n   * - Attestation failed\n   * - Wrong API key\n   * - Project deleted\n   */\n  if (httpStatus === 404 || httpStatus === 403) {\n    return {\n      backoffCount: 1,\n      allowRequestsAfter: Date.now() + ONE_DAY,\n      httpStatus\n    };\n  } else {\n    /**\n     * For all other error codes, the time when it is ok to retry again\n     * is based on exponential backoff.\n     */\n    const backoffCount = throttleData ? throttleData.backoffCount : 0;\n    const backoffMillis = calculateBackoffMillis(backoffCount, 1000, 2);\n    return {\n      backoffCount: backoffCount + 1,\n      allowRequestsAfter: Date.now() + backoffMillis,\n      httpStatus\n    };\n  }\n}\n\nfunction throwIfThrottled(throttleData: ThrottleData | null): void {\n  if (throttleData) {\n    if (Date.now() - throttleData.allowRequestsAfter <= 0) {\n      // If before, throw.\n      throw ERROR_FACTORY.create(AppCheckError.THROTTLED, {\n        time: getDurationString(throttleData.allowRequestsAfter - Date.now()),\n        httpStatus: throttleData.httpStatus\n      });\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  AppCheck,\n  AppCheckOptions,\n  AppCheckTokenResult,\n  Unsubscribe,\n  PartialObserver\n} from './public-types';\nimport { ERROR_FACTORY, AppCheckError } from './errors';\nimport {\n  getStateReference,\n  getDebugState,\n  DEFAULT_STATE,\n  setInitialState\n} from './state';\nimport { FirebaseApp, getApp, _getProvider } from '@firebase/app';\nimport { getModularInstance, ErrorFn, NextFn } from '@firebase/util';\nimport { AppCheckService } from './factory';\nimport { AppCheckProvider, ListenerType } from './types';\nimport {\n  getToken as getTokenInternal,\n  getLimitedUseToken as getLimitedUseTokenInternal,\n  addTokenListener,\n  removeTokenListener,\n  isValid,\n  notifyTokenListeners\n} from './internal-api';\nimport { readTokenFromStorage } from './storage';\nimport { getDebugToken, initializeDebugMode, isDebugMode } from './debug';\nimport { logger } from './logger';\n\ndeclare module '@firebase/component' {\n  interface NameServiceMapping {\n    'app-check': AppCheckService;\n  }\n}\n\nexport {\n  ReCaptchaV3Provider,\n  CustomProvider,\n  ReCaptchaEnterpriseProvider\n} from './providers';\n\n/**\n * Activate App Check for the given app. Can be called only once per app.\n * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for\n * @param options - App Check initialization options\n * @public\n */\nexport function initializeAppCheck(\n  app: FirebaseApp = getApp(),\n  options: AppCheckOptions\n): AppCheck {\n  app = getModularInstance(app);\n  const provider = _getProvider(app, 'app-check');\n\n  // Ensure initializeDebugMode() is only called once.\n  if (!getDebugState().initialized) {\n    initializeDebugMode();\n  }\n\n  // Log a message containing the debug token when `initializeAppCheck()`\n  // is called in debug mode.\n  if (isDebugMode()) {\n    // Do not block initialization to get the token for the message.\n    void getDebugToken().then(token =>\n      // Not using logger because I don't think we ever want this accidentally hidden.\n      console.log(\n        `App Check debug token: ${token}. You will need to add it to your app's App Check settings in the Firebase console for it to work.`\n      )\n    );\n  }\n\n  if (provider.isInitialized()) {\n    const existingInstance = provider.getImmediate();\n    const initialOptions = provider.getOptions() as unknown as AppCheckOptions;\n    if (\n      initialOptions.isTokenAutoRefreshEnabled ===\n        options.isTokenAutoRefreshEnabled &&\n      initialOptions.provider.isEqual(options.provider)\n    ) {\n      return existingInstance;\n    } else {\n      throw ERROR_FACTORY.create(AppCheckError.ALREADY_INITIALIZED, {\n        appName: app.name\n      });\n    }\n  }\n\n  const appCheck = provider.initialize({ options });\n  _activate(app, options.provider, options.isTokenAutoRefreshEnabled);\n  // If isTokenAutoRefreshEnabled is false, do not send any requests to the\n  // exchange endpoint without an explicit call from the user either directly\n  // or through another Firebase library (storage, functions, etc.)\n  if (getStateReference(app).isTokenAutoRefreshEnabled) {\n    // Adding a listener will start the refresher and fetch a token if needed.\n    // This gets a token ready and prevents a delay when an internal library\n    // requests the token.\n    // Listener function does not need to do anything, its base functionality\n    // of calling getToken() already fetches token and writes it to memory/storage.\n    addTokenListener(appCheck, ListenerType.INTERNAL, () => {});\n  }\n\n  return appCheck;\n}\n\n/**\n * Activate App Check\n * @param app - Firebase app to activate App Check for.\n * @param provider - reCAPTCHA v3 provider or\n * custom token provider.\n * @param isTokenAutoRefreshEnabled - If true, the SDK automatically\n * refreshes App Check tokens as needed. If undefined, defaults to the\n * value of `app.automaticDataCollectionEnabled`, which defaults to\n * false and can be set in the app config.\n */\nfunction _activate(\n  app: FirebaseApp,\n  provider: AppCheckProvider,\n  isTokenAutoRefreshEnabled: boolean = false\n): void {\n  // Create an entry in the APP_CHECK_STATES map. Further changes should\n  // directly mutate this object.\n  const state = setInitialState(app, { ...DEFAULT_STATE });\n\n  state.activated = true;\n  state.provider = provider; // Read cached token from storage if it exists and store it in memory.\n  state.cachedTokenPromise = readTokenFromStorage(app).then(cachedToken => {\n    if (cachedToken && isValid(cachedToken)) {\n      state.token = cachedToken;\n      // notify all listeners with the cached token\n      notifyTokenListeners(app, { token: cachedToken.token });\n    }\n    return cachedToken;\n  });\n\n  // Global `automaticDataCollectionEnabled` (defaults to true) and\n  // `isTokenAutoRefreshEnabled` must both be true.\n  state.isTokenAutoRefreshEnabled =\n    isTokenAutoRefreshEnabled && app.automaticDataCollectionEnabled;\n\n  if (!app.automaticDataCollectionEnabled && isTokenAutoRefreshEnabled) {\n    logger.warn(\n      '`isTokenAutoRefreshEnabled` is true but ' +\n        '`automaticDataCollectionEnabled` was set to false during' +\n        ' `initializeApp()`. This blocks automatic token refresh.'\n    );\n  }\n\n  state.provider.initialize(app);\n}\n\n/**\n * Set whether App Check will automatically refresh tokens as needed.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param isTokenAutoRefreshEnabled - If true, the SDK automatically\n * refreshes App Check tokens as needed. This overrides any value set\n * during `initializeAppCheck()`.\n * @public\n */\nexport function setTokenAutoRefreshEnabled(\n  appCheckInstance: AppCheck,\n  isTokenAutoRefreshEnabled: boolean\n): void {\n  const app = appCheckInstance.app;\n  const state = getStateReference(app);\n  // This will exist if any product libraries have called\n  // `addTokenListener()`\n  if (state.tokenRefresher) {\n    if (isTokenAutoRefreshEnabled === true) {\n      state.tokenRefresher.start();\n    } else {\n      state.tokenRefresher.stop();\n    }\n  }\n  state.isTokenAutoRefreshEnabled = isTokenAutoRefreshEnabled;\n}\n/**\n * Get the current App Check token. If `forceRefresh` is false, this function first\n * checks for a valid token in memory, then local persistence (IndexedDB).\n * If not found, or if `forceRefresh` is true, it makes a request to the\n * App Check endpoint for a fresh token. That request attaches\n * to the most recent in-flight request if one is present.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param forceRefresh - If true, will always try to fetch a fresh token.\n * If false, will use a cached token if found in storage.\n * @public\n */\nexport async function getToken(\n  appCheckInstance: AppCheck,\n  forceRefresh?: boolean\n): Promise<AppCheckTokenResult> {\n  const result = await getTokenInternal(\n    appCheckInstance as AppCheckService,\n    forceRefresh\n  );\n  if (result.error) {\n    throw result.error;\n  }\n  if (result.internalError) {\n    throw result.internalError;\n  }\n  return { token: result.token };\n}\n\n/**\n * Requests a Firebase App Check token. This method should be used\n * only if you need to authorize requests to a non-Firebase backend.\n *\n * Returns limited-use tokens that are intended for use with your\n * non-Firebase backend endpoints that are protected with\n * <a href=\"https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection\">\n * Replay Protection</a>. This method\n * does not affect the token generation behavior of the\n * #getAppCheckToken() method.\n *\n * @param appCheckInstance - The App Check service instance.\n * @returns The limited use token.\n * @public\n */\nexport function getLimitedUseToken(\n  appCheckInstance: AppCheck\n): Promise<AppCheckTokenResult> {\n  return getLimitedUseTokenInternal(appCheckInstance as AppCheckService);\n}\n\n/**\n * Registers a listener to changes in the token state. There can be more\n * than one listener registered at the same time for one or more\n * App Check instances. The listeners call back on the UI thread whenever\n * the current token associated with this App Check instance changes.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param observer - An object with `next`, `error`, and `complete`\n * properties. `next` is called with an\n * {@link AppCheckTokenResult}\n * whenever the token changes. `error` is optional and is called if an\n * error is thrown by the listener (the `next` function). `complete`\n * is unused, as the token stream is unending.\n *\n * @returns A function that unsubscribes this listener.\n * @public\n */\nexport function onTokenChanged(\n  appCheckInstance: AppCheck,\n  observer: PartialObserver<AppCheckTokenResult>\n): Unsubscribe;\n/**\n * Registers a listener to changes in the token state. There can be more\n * than one listener registered at the same time for one or more\n * App Check instances. The listeners call back on the UI thread whenever\n * the current token associated with this App Check instance changes.\n *\n * @param appCheckInstance - The App Check service instance.\n * @param onNext - When the token changes, this function is called with an\n * {@link AppCheckTokenResult}.\n * @param onError - Optional. Called if there is an error thrown by the\n * listener (the `onNext` function).\n * @param onCompletion - Currently unused, as the token stream is unending.\n * @returns A function that unsubscribes this listener.\n * @public\n */\nexport function onTokenChanged(\n  appCheckInstance: AppCheck,\n  onNext: (tokenResult: AppCheckTokenResult) => void,\n  onError?: (error: Error) => void,\n  onCompletion?: () => void\n): Unsubscribe;\n/**\n * Wraps `addTokenListener`/`removeTokenListener` methods in an `Observer`\n * pattern for public use.\n */\nexport function onTokenChanged(\n  appCheckInstance: AppCheck,\n  onNextOrObserver:\n    | ((tokenResult: AppCheckTokenResult) => void)\n    | PartialObserver<AppCheckTokenResult>,\n  onError?: (error: Error) => void,\n  /**\n   * NOTE: Although an `onCompletion` callback can be provided, it will\n   * never be called because the token stream is never-ending.\n   * It is added only for API consistency with the observer pattern, which\n   * we follow in JS APIs.\n   */\n  // eslint-disable-next-line @typescript-eslint/no-unused-vars\n  onCompletion?: () => void\n): Unsubscribe {\n  let nextFn: NextFn<AppCheckTokenResult> = () => {};\n  let errorFn: ErrorFn = () => {};\n  if ((onNextOrObserver as PartialObserver<AppCheckTokenResult>).next != null) {\n    nextFn = (\n      onNextOrObserver as PartialObserver<AppCheckTokenResult>\n    ).next!.bind(onNextOrObserver);\n  } else {\n    nextFn = onNextOrObserver as NextFn<AppCheckTokenResult>;\n  }\n  if (\n    (onNextOrObserver as PartialObserver<AppCheckTokenResult>).error != null\n  ) {\n    errorFn = (\n      onNextOrObserver as PartialObserver<AppCheckTokenResult>\n    ).error!.bind(onNextOrObserver);\n  } else if (onError) {\n    errorFn = onError;\n  }\n  addTokenListener(\n    appCheckInstance as AppCheckService,\n    ListenerType.EXTERNAL,\n    nextFn,\n    errorFn\n  );\n  return () => removeTokenListener(appCheckInstance.app, nextFn);\n}\n","/**\n * The Firebase App Check Web SDK.\n *\n * @remarks\n * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or\n * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use\n * `CustomProvider` and write your own attestation method.\n *\n * @packageDocumentation\n */\n\n/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { registerVersion, _registerComponent } from '@firebase/app';\nimport {\n  Component,\n  ComponentType,\n  InstantiationMode\n} from '@firebase/component';\nimport { _AppCheckComponentName } from './public-types';\nimport { factory, internalFactory } from './factory';\nimport { _AppCheckInternalComponentName } from './types';\nimport { name, version } from '../package.json';\n\n// Used by other Firebase packages.\nexport { _AppCheckInternalComponentName };\n\nexport * from './api';\nexport * from './public-types';\n\nconst APP_CHECK_NAME: _AppCheckComponentName = 'app-check';\nconst APP_CHECK_NAME_INTERNAL: _AppCheckInternalComponentName =\n  'app-check-internal';\nfunction registerAppCheck(): void {\n  // The public interface\n  _registerComponent(\n    new Component(\n      APP_CHECK_NAME,\n      container => {\n        // getImmediate for FirebaseApp will always succeed\n        const app = container.getProvider('app').getImmediate();\n        const heartbeatServiceProvider = container.getProvider('heartbeat');\n        return factory(app, heartbeatServiceProvider);\n      },\n      ComponentType.PUBLIC\n    )\n      .setInstantiationMode(InstantiationMode.EXPLICIT)\n      /**\n       * Initialize app-check-internal after app-check is initialized to make AppCheck available to\n       * other Firebase SDKs\n       */\n      .setInstanceCreatedCallback(\n        (container, _identifier, _appcheckService) => {\n          container.getProvider(APP_CHECK_NAME_INTERNAL).initialize();\n        }\n      )\n  );\n\n  // The internal interface used by other Firebase products\n  _registerComponent(\n    new Component(\n      APP_CHECK_NAME_INTERNAL,\n      container => {\n        const appCheck = container.getProvider('app-check').getImmediate();\n        return internalFactory(appCheck);\n      },\n      ComponentType.PUBLIC\n    ).setInstantiationMode(InstantiationMode.EXPLICIT)\n  );\n\n  registerVersion(name, 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\ No newline at end of file
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/api.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/api.d.ts
new file mode 100644
index 0000000..def58a8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/api.d.ts
@@ -0,0 +1,105 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AppCheck, AppCheckOptions, AppCheckTokenResult, Unsubscribe, PartialObserver } from './public-types';
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckService } from './factory';
+declare module '@firebase/component' {
+    interface NameServiceMapping {
+        'app-check': AppCheckService;
+    }
+}
+export { ReCaptchaV3Provider, CustomProvider, ReCaptchaEnterpriseProvider } from './providers';
+/**
+ * Activate App Check for the given app. Can be called only once per app.
+ * @param app - the {@link @firebase/app#FirebaseApp} to activate App Check for
+ * @param options - App Check initialization options
+ * @public
+ */
+export declare function initializeAppCheck(app: FirebaseApp | undefined, options: AppCheckOptions): AppCheck;
+/**
+ * Set whether App Check will automatically refresh tokens as needed.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param isTokenAutoRefreshEnabled - If true, the SDK automatically
+ * refreshes App Check tokens as needed. This overrides any value set
+ * during `initializeAppCheck()`.
+ * @public
+ */
+export declare function setTokenAutoRefreshEnabled(appCheckInstance: AppCheck, isTokenAutoRefreshEnabled: boolean): void;
+/**
+ * Get the current App Check token. If `forceRefresh` is false, this function first
+ * checks for a valid token in memory, then local persistence (IndexedDB).
+ * If not found, or if `forceRefresh` is true, it makes a request to the
+ * App Check endpoint for a fresh token. That request attaches
+ * to the most recent in-flight request if one is present.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param forceRefresh - If true, will always try to fetch a fresh token.
+ * If false, will use a cached token if found in storage.
+ * @public
+ */
+export declare function getToken(appCheckInstance: AppCheck, forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+/**
+ * Requests a Firebase App Check token. This method should be used
+ * only if you need to authorize requests to a non-Firebase backend.
+ *
+ * Returns limited-use tokens that are intended for use with your
+ * non-Firebase backend endpoints that are protected with
+ * <a href="https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection">
+ * Replay Protection</a>. This method
+ * does not affect the token generation behavior of the
+ * #getAppCheckToken() method.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @returns The limited use token.
+ * @public
+ */
+export declare function getLimitedUseToken(appCheckInstance: AppCheck): Promise<AppCheckTokenResult>;
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param observer - An object with `next`, `error`, and `complete`
+ * properties. `next` is called with an
+ * {@link AppCheckTokenResult}
+ * whenever the token changes. `error` is optional and is called if an
+ * error is thrown by the listener (the `next` function). `complete`
+ * is unused, as the token stream is unending.
+ *
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, observer: PartialObserver<AppCheckTokenResult>): Unsubscribe;
+/**
+ * Registers a listener to changes in the token state. There can be more
+ * than one listener registered at the same time for one or more
+ * App Check instances. The listeners call back on the UI thread whenever
+ * the current token associated with this App Check instance changes.
+ *
+ * @param appCheckInstance - The App Check service instance.
+ * @param onNext - When the token changes, this function is called with an
+ * {@link AppCheckTokenResult}.
+ * @param onError - Optional. Called if there is an error thrown by the
+ * listener (the `onNext` function).
+ * @param onCompletion - Currently unused, as the token stream is unending.
+ * @returns A function that unsubscribes this listener.
+ * @public
+ */
+export declare function onTokenChanged(appCheckInstance: AppCheck, onNext: (tokenResult: AppCheckTokenResult) => void, onError?: (error: Error) => void, onCompletion?: () => void): Unsubscribe;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/api.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/api.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/api.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/client.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/client.d.ts
new file mode 100644
index 0000000..d49e05c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/client.d.ts
@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { Provider } from '@firebase/component';
+import { AppCheckTokenInternal } from './types';
+interface AppCheckRequest {
+    url: string;
+    body: {
+        [key: string]: string;
+    };
+}
+export declare function exchangeToken({ url, body }: AppCheckRequest, heartbeatServiceProvider: Provider<'heartbeat'>): Promise<AppCheckTokenInternal>;
+export declare function getExchangeRecaptchaV3TokenRequest(app: FirebaseApp, reCAPTCHAToken: string): AppCheckRequest;
+export declare function getExchangeRecaptchaEnterpriseTokenRequest(app: FirebaseApp, reCAPTCHAToken: string): AppCheckRequest;
+export declare function getExchangeDebugTokenRequest(app: FirebaseApp, debugToken: string): AppCheckRequest;
+export {};
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/client.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/client.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/client.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/constants.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/constants.d.ts
new file mode 100644
index 0000000..2b1e3dc
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/constants.d.ts
@@ -0,0 +1,40 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export declare const BASE_ENDPOINT = "https://content-firebaseappcheck.googleapis.com/v1";
+export declare const EXCHANGE_RECAPTCHA_TOKEN_METHOD = "exchangeRecaptchaV3Token";
+export declare const EXCHANGE_RECAPTCHA_ENTERPRISE_TOKEN_METHOD = "exchangeRecaptchaEnterpriseToken";
+export declare const EXCHANGE_DEBUG_TOKEN_METHOD = "exchangeDebugToken";
+export declare const TOKEN_REFRESH_TIME: {
+    /**
+     * The offset time before token natural expiration to run the refresh.
+     * This is currently 5 minutes.
+     */
+    OFFSET_DURATION: number;
+    /**
+     * This is the first retrial wait after an error. This is currently
+     * 30 seconds.
+     */
+    RETRIAL_MIN_WAIT: number;
+    /**
+     * This is the maximum retrial wait, currently 16 minutes.
+     */
+    RETRIAL_MAX_WAIT: number;
+};
+/**
+ * One day in millis, for certain error code backoffs.
+ */
+export declare const ONE_DAY: number;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/debug.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/debug.d.ts
new file mode 100644
index 0000000..c5abdf9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/debug.d.ts
@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+declare global {
+    var FIREBASE_APPCHECK_DEBUG_TOKEN: boolean | string | undefined;
+}
+export declare function isDebugMode(): boolean;
+export declare function getDebugToken(): Promise<string>;
+export declare function initializeDebugMode(): void;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/debug.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/debug.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/debug.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/errors.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/errors.d.ts
new file mode 100644
index 0000000..c9549d8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/errors.d.ts
@@ -0,0 +1,66 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ErrorFactory } from '@firebase/util';
+export declare const enum AppCheckError {
+    ALREADY_INITIALIZED = "already-initialized",
+    USE_BEFORE_ACTIVATION = "use-before-activation",
+    FETCH_NETWORK_ERROR = "fetch-network-error",
+    FETCH_PARSE_ERROR = "fetch-parse-error",
+    FETCH_STATUS_ERROR = "fetch-status-error",
+    STORAGE_OPEN = "storage-open",
+    STORAGE_GET = "storage-get",
+    STORAGE_WRITE = "storage-set",
+    RECAPTCHA_ERROR = "recaptcha-error",
+    INITIAL_THROTTLE = "initial-throttle",
+    THROTTLED = "throttled"
+}
+interface ErrorParams {
+    [AppCheckError.ALREADY_INITIALIZED]: {
+        appName: string;
+    };
+    [AppCheckError.USE_BEFORE_ACTIVATION]: {
+        appName: string;
+    };
+    [AppCheckError.FETCH_NETWORK_ERROR]: {
+        originalErrorMessage: string;
+    };
+    [AppCheckError.FETCH_PARSE_ERROR]: {
+        originalErrorMessage: string;
+    };
+    [AppCheckError.FETCH_STATUS_ERROR]: {
+        httpStatus: number;
+    };
+    [AppCheckError.STORAGE_OPEN]: {
+        originalErrorMessage?: string;
+    };
+    [AppCheckError.STORAGE_GET]: {
+        originalErrorMessage?: string;
+    };
+    [AppCheckError.STORAGE_WRITE]: {
+        originalErrorMessage?: string;
+    };
+    [AppCheckError.INITIAL_THROTTLE]: {
+        time: string;
+        httpStatus: number;
+    };
+    [AppCheckError.THROTTLED]: {
+        time: string;
+        httpStatus: number;
+    };
+}
+export declare const ERROR_FACTORY: ErrorFactory<AppCheckError, ErrorParams>;
+export {};
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/factory.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/factory.d.ts
new file mode 100644
index 0000000..805f982
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/factory.d.ts
@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AppCheck } from './public-types';
+import { FirebaseApp, _FirebaseService } from '@firebase/app';
+import { FirebaseAppCheckInternal } from './types';
+import { Provider } from '@firebase/component';
+/**
+ * AppCheck Service class.
+ */
+export declare class AppCheckService implements AppCheck, _FirebaseService {
+    app: FirebaseApp;
+    heartbeatServiceProvider: Provider<'heartbeat'>;
+    constructor(app: FirebaseApp, heartbeatServiceProvider: Provider<'heartbeat'>);
+    _delete(): Promise<void>;
+}
+export declare function factory(app: FirebaseApp, heartbeatServiceProvider: Provider<'heartbeat'>): AppCheckService;
+export declare function internalFactory(appCheck: AppCheckService): FirebaseAppCheckInternal;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/index.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/index.d.ts
new file mode 100644
index 0000000..2d51c62
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/index.d.ts
@@ -0,0 +1,14 @@
+/**
+ * The Firebase App Check Web SDK.
+ *
+ * @remarks
+ * Firebase App Check does not work in a Node.js environment using `ReCaptchaV3Provider` or
+ * `ReCaptchaEnterpriseProvider`, but can be used in Node.js if you use
+ * `CustomProvider` and write your own attestation method.
+ *
+ * @packageDocumentation
+ */
+import { _AppCheckInternalComponentName } from './types';
+export { _AppCheckInternalComponentName };
+export * from './api';
+export * from './public-types';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/indexeddb.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/indexeddb.d.ts
new file mode 100644
index 0000000..b6942da
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/indexeddb.d.ts
@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckTokenInternal } from './types';
+export declare function readTokenFromIndexedDB(app: FirebaseApp): Promise<AppCheckTokenInternal | undefined>;
+export declare function writeTokenToIndexedDB(app: FirebaseApp, token?: AppCheckTokenInternal): Promise<void>;
+export declare function writeDebugTokenToIndexedDB(token: string): Promise<void>;
+export declare function readDebugTokenFromIndexedDB(): Promise<string | undefined>;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/internal-api.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/internal-api.d.ts
new file mode 100644
index 0000000..a4f5fe3
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/internal-api.d.ts
@@ -0,0 +1,44 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckTokenResult, AppCheckTokenInternal, ListenerType } from './types';
+import { AppCheckTokenListener } from './public-types';
+import { AppCheckService } from './factory';
+export declare const defaultTokenErrorData: {
+    error: string;
+};
+/**
+ * Stringify and base64 encode token error data.
+ *
+ * @param tokenError Error data, currently hardcoded.
+ */
+export declare function formatDummyToken(tokenErrorData: Record<string, string>): string;
+/**
+ * This function always resolves.
+ * The result will contain an error field if there is any error.
+ * In case there is an error, the token field in the result will be populated with a dummy value
+ */
+export declare function getToken(appCheck: AppCheckService, forceRefresh?: boolean, shouldLogErrors?: boolean): Promise<AppCheckTokenResult>;
+/**
+ * Internal API for limited use tokens. Skips all FAC state and simply calls
+ * the underlying provider.
+ */
+export declare function getLimitedUseToken(appCheck: AppCheckService): Promise<AppCheckTokenResult>;
+export declare function addTokenListener(appCheck: AppCheckService, type: ListenerType, listener: AppCheckTokenListener, onError?: (error: Error) => void): void;
+export declare function removeTokenListener(app: FirebaseApp, listener: AppCheckTokenListener): void;
+export declare function notifyTokenListeners(app: FirebaseApp, token: AppCheckTokenResult): void;
+export declare function isValid(token: AppCheckTokenInternal): boolean;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/internal-api.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/internal-api.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/internal-api.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/logger.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/logger.d.ts
new file mode 100644
index 0000000..bfd6d07
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/logger.d.ts
@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Logger } from '@firebase/logger';
+export declare const logger: Logger;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/proactive-refresh.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/proactive-refresh.d.ts
new file mode 100644
index 0000000..d90731c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/proactive-refresh.d.ts
@@ -0,0 +1,35 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Port from auth proactiverefresh.js
+ *
+ */
+export declare class Refresher {
+    private readonly operation;
+    private readonly retryPolicy;
+    private readonly getWaitDuration;
+    private readonly lowerBound;
+    private readonly upperBound;
+    private pending;
+    private nextErrorWaitInterval;
+    constructor(operation: () => Promise<unknown>, retryPolicy: (error: unknown) => boolean, getWaitDuration: () => number, lowerBound: number, upperBound: number);
+    start(): void;
+    stop(): void;
+    isRunning(): boolean;
+    private process;
+    private getNextRun;
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/proactive-refresh.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/proactive-refresh.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/proactive-refresh.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/providers.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/providers.d.ts
new file mode 100644
index 0000000..787cea7
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/providers.d.ts
@@ -0,0 +1,108 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { CustomProviderOptions } from './public-types';
+import { AppCheckProvider, AppCheckTokenInternal } from './types';
+/**
+ * App Check provider that can obtain a reCAPTCHA V3 token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaV3Provider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaV3Provider instance.
+     * @param siteKey - ReCAPTCHA V3 siteKey.
+     */
+    constructor(_siteKey: string);
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+/**
+ * App Check provider that can obtain a reCAPTCHA Enterprise token and exchange it
+ * for an App Check token.
+ *
+ * @public
+ */
+export declare class ReCaptchaEnterpriseProvider implements AppCheckProvider {
+    private _siteKey;
+    private _app?;
+    private _heartbeatServiceProvider?;
+    /**
+     * Throttle requests on certain error codes to prevent too many retries
+     * in a short time.
+     */
+    private _throttleData;
+    /**
+     * Create a ReCaptchaEnterpriseProvider instance.
+     * @param siteKey - reCAPTCHA Enterprise score-based site key.
+     */
+    constructor(_siteKey: string);
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
+/**
+ * Custom provider class.
+ * @public
+ */
+export declare class CustomProvider implements AppCheckProvider {
+    private _customProviderOptions;
+    private _app?;
+    constructor(_customProviderOptions: CustomProviderOptions);
+    /**
+     * @internal
+     */
+    getToken(): Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+    /**
+     * @internal
+     */
+    isEqual(otherProvider: unknown): boolean;
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/providers.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/providers.test.d.ts
new file mode 100644
index 0000000..c5efdd9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/providers.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/public-types.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/public-types.d.ts
new file mode 100644
index 0000000..0fe5708
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/public-types.d.ts
@@ -0,0 +1,85 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { CustomProvider, ReCaptchaEnterpriseProvider, ReCaptchaV3Provider } from './providers';
+export { Unsubscribe, PartialObserver } from '@firebase/util';
+/**
+ * The Firebase App Check service interface.
+ *
+ * @public
+ */
+export interface AppCheck {
+    /**
+     * The {@link @firebase/app#FirebaseApp} this `AppCheck` instance is associated with.
+     */
+    app: FirebaseApp;
+}
+/**
+ * The token returned from an App Check provider.
+ * @public
+ */
+export interface AppCheckToken {
+    readonly token: string;
+    /**
+     * The local timestamp after which the token will expire.
+     */
+    readonly expireTimeMillis: number;
+}
+/**
+ * @internal
+ */
+export type _AppCheckComponentName = 'app-check';
+/**
+ * Options for App Check initialization.
+ * @public
+ */
+export interface AppCheckOptions {
+    /**
+     * A reCAPTCHA V3 provider, reCAPTCHA Enterprise provider, or custom provider.
+     */
+    provider: CustomProvider | ReCaptchaV3Provider | ReCaptchaEnterpriseProvider;
+    /**
+     * If set to true, enables automatic background refresh of App Check token.
+     */
+    isTokenAutoRefreshEnabled?: boolean;
+}
+/**
+ * Options when creating a {@link CustomProvider}.
+ * @public
+ */
+export interface CustomProviderOptions {
+    /**
+     * Function to get an App Check token through a custom provider
+     * service.
+     */
+    getToken: () => Promise<AppCheckToken>;
+}
+/**
+ * Result returned by `getToken()`.
+ * @public
+ */
+export interface AppCheckTokenResult {
+    /**
+     * The token string in JWT format.
+     */
+    readonly token: string;
+}
+/**
+ * A listener that is called whenever the App Check token changes.
+ * @public
+ */
+export type AppCheckTokenListener = (token: AppCheckTokenResult) => void;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/recaptcha.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/recaptcha.d.ts
new file mode 100644
index 0000000..22a51d2
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/recaptcha.d.ts
@@ -0,0 +1,43 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+export declare const RECAPTCHA_URL = "https://www.google.com/recaptcha/api.js";
+export declare const RECAPTCHA_ENTERPRISE_URL = "https://www.google.com/recaptcha/enterprise.js";
+export declare function initializeV3(app: FirebaseApp, siteKey: string): Promise<GreCAPTCHA>;
+export declare function initializeEnterprise(app: FirebaseApp, siteKey: string): Promise<GreCAPTCHA>;
+export declare function getToken(app: FirebaseApp): Promise<string>;
+declare global {
+    interface Window {
+        grecaptcha: GreCAPTCHATopLevel | undefined;
+    }
+}
+export interface GreCAPTCHATopLevel extends GreCAPTCHA {
+    enterprise: GreCAPTCHA;
+}
+export interface GreCAPTCHA {
+    ready: (callback: () => void) => void;
+    execute: (siteKey: string, options: {
+        action: string;
+    }) => Promise<string>;
+    render: (container: string | HTMLElement, parameters: GreCAPTCHARenderOption) => string;
+}
+export interface GreCAPTCHARenderOption {
+    sitekey: string;
+    size: 'invisible';
+    callback: () => void;
+    'error-callback': () => void;
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/recaptcha.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/recaptcha.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/recaptcha.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/state.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/state.d.ts
new file mode 100644
index 0000000..698374b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/state.d.ts
@@ -0,0 +1,54 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckProvider, AppCheckTokenInternal, AppCheckTokenObserver } from './types';
+import { Refresher } from './proactive-refresh';
+import { Deferred } from '@firebase/util';
+import { GreCAPTCHA } from './recaptcha';
+export interface AppCheckState {
+    activated: boolean;
+    tokenObservers: AppCheckTokenObserver[];
+    provider?: AppCheckProvider;
+    token?: AppCheckTokenInternal;
+    cachedTokenPromise?: Promise<AppCheckTokenInternal | undefined>;
+    exchangeTokenPromise?: Promise<AppCheckTokenInternal>;
+    tokenRefresher?: Refresher;
+    reCAPTCHAState?: ReCAPTCHAState;
+    isTokenAutoRefreshEnabled?: boolean;
+}
+export interface ReCAPTCHAState {
+    initialized: Deferred<GreCAPTCHA>;
+    widgetId?: string;
+    succeeded?: boolean;
+}
+export interface DebugState {
+    initialized: boolean;
+    enabled: boolean;
+    token?: Deferred<string>;
+}
+export declare const DEFAULT_STATE: AppCheckState;
+/**
+ * Gets a reference to the state object.
+ */
+export declare function getStateReference(app: FirebaseApp): AppCheckState;
+/**
+ * Set once on initialization. The map should hold the same reference to the
+ * same object until this entry is deleted.
+ */
+export declare function setInitialState(app: FirebaseApp, state: AppCheckState): AppCheckState;
+export declare function clearState(): void;
+export declare function getDebugState(): DebugState;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/storage.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/storage.d.ts
new file mode 100644
index 0000000..b1dfd96
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/storage.d.ts
@@ -0,0 +1,27 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckTokenInternal } from './types';
+/**
+ * Always resolves. In case of an error reading from indexeddb, resolve with undefined
+ */
+export declare function readTokenFromStorage(app: FirebaseApp): Promise<AppCheckTokenInternal | undefined>;
+/**
+ * Always resolves. In case of an error writing to indexeddb, print a warning and resolve the promise
+ */
+export declare function writeTokenToStorage(app: FirebaseApp, token?: AppCheckTokenInternal): Promise<void>;
+export declare function readOrCreateDebugTokenFromStorage(): Promise<string>;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/storage.test.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/storage.test.d.ts
new file mode 100644
index 0000000..68eefa5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/storage.test.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import '../test/setup';
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/tsdoc-metadata.json b/frontend-old/node_modules/@firebase/app-check/dist/src/tsdoc-metadata.json
new file mode 100644
index 0000000..6af1f6a
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/tsdoc-metadata.json
@@ -0,0 +1,11 @@
+// This file is read by tools that parse documentation comments conforming to the TSDoc standard.
+// It should be published with your NPM package.  It should not be tracked by Git.
+{
+  "tsdocVersion": "0.12",
+  "toolPackages": [
+    {
+      "packageName": "@microsoft/api-extractor",
+      "packageVersion": "0.1.2"
+    }
+  ]
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/types.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/types.d.ts
new file mode 100644
index 0000000..e1b916c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/types.d.ts
@@ -0,0 +1,66 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { PartialObserver } from '@firebase/util';
+import { AppCheckToken, AppCheckTokenListener } from './public-types';
+export interface FirebaseAppCheckInternal {
+    getToken(forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+    getLimitedUseToken(): Promise<AppCheckTokenResult>;
+    addTokenListener(listener: AppCheckTokenListener): void;
+    removeTokenListener(listener: AppCheckTokenListener): void;
+}
+export interface AppCheckTokenObserver extends PartialObserver<AppCheckTokenResult> {
+    next: AppCheckTokenListener;
+    type: ListenerType;
+}
+export declare const enum ListenerType {
+    'INTERNAL' = "INTERNAL",
+    'EXTERNAL' = "EXTERNAL"
+}
+export interface AppCheckTokenResult {
+    readonly token: string;
+    readonly error?: Error;
+    readonly internalError?: Error;
+}
+export interface AppCheckTokenInternal extends AppCheckToken {
+    issuedAtTimeMillis: number;
+}
+export interface AppCheckProvider {
+    /**
+     * Returns an App Check token.
+     * @internal
+     */
+    getToken: () => Promise<AppCheckTokenInternal>;
+    /**
+     * @internal
+     */
+    initialize(app: FirebaseApp): void;
+}
+/**
+ * @internal
+ */
+export type _AppCheckInternalComponentName = 'app-check-internal';
+export interface ThrottleData {
+    allowRequestsAfter: number;
+    backoffCount: number;
+    httpStatus: number;
+}
+declare module '@firebase/component' {
+    interface NameServiceMapping {
+        'app-check-internal': FirebaseAppCheckInternal;
+    }
+}
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/src/util.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/src/util.d.ts
new file mode 100644
index 0000000..29cc2e3
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/src/util.d.ts
@@ -0,0 +1,21 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { GreCAPTCHA } from './recaptcha';
+import { FirebaseApp } from '@firebase/app';
+export declare function getRecaptcha(isEnterprise?: boolean): GreCAPTCHA | undefined;
+export declare function ensureActivated(app: FirebaseApp): void;
+export declare function getDurationString(durationInMillis: number): string;
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/test/setup.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/test/setup.d.ts
new file mode 100644
index 0000000..731d2d9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/test/setup.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export {};
diff --git a/frontend-old/node_modules/@firebase/app-check/dist/test/util.d.ts b/frontend-old/node_modules/@firebase/app-check/dist/test/util.d.ts
new file mode 100644
index 0000000..3590096
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/app-check/dist/test/util.d.ts
@@ -0,0 +1,34 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { GreCAPTCHA, GreCAPTCHATopLevel } from '../src/recaptcha';
+import { Provider } from '@firebase/component';
+import { AppCheck, CustomProvider } from '../src';
+export declare const FAKE_SITE_KEY = "fake-site-key";
+export declare function getFakeApp(overrides?: Record<string, any>): FirebaseApp;
+export declare function getFakeAppCheck(app: FirebaseApp): AppCheck;
+export declare function getFullApp(): FirebaseApp;
+export declare function getFakeCustomTokenProvider(): CustomProvider;
+export declare function getFakeHeartbeatServiceProvider(fakeLogString?: string): Provider<'heartbeat'>;
+export declare function getFakeGreCAPTCHA(isTopLevel?: boolean): GreCAPTCHATopLevel | GreCAPTCHA;
+/**
+ * Returns all script tags in DOM matching our reCAPTCHA url pattern.
+ * Tests in other files may have inserted multiple reCAPTCHA scripts, because they don't
+ * care about it.
+ */
+export declare function findgreCAPTCHAScriptsOnPage(): HTMLScriptElement[];
+export declare function removegreCAPTCHAScriptsOnPage(): void;