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diff --git a/frontend-old/node_modules/@firebase/messaging/dist/index.sw.cjs b/frontend-old/node_modules/@firebase/messaging/dist/index.sw.cjs
new file mode 100644
index 0000000..7b469e0
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/messaging/dist/index.sw.cjs
@@ -0,0 +1,1285 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+require('@firebase/installations');
+var component = require('@firebase/component');
+var idb = require('idb');
+var util = require('@firebase/util');
+var app = require('@firebase/app');
+
+/**
+ * @license
+ * Copyright 2019 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 DEFAULT_VAPID_KEY = 'BDOU99-h67HcA6JeFXHbSNMu7e2yNNu3RzoMj8TM4W88jITfq7ZmPvIM1Iv-4_l2LxQcYwhqby2xGpWwzjfAnG4';
+const ENDPOINT = 'https://fcmregistrations.googleapis.com/v1';
+/** Key of FCM Payload in Notification's data field. */
+const FCM_MSG = 'FCM_MSG';
+const CONSOLE_CAMPAIGN_ID = 'google.c.a.c_id';
+// Defined as in proto/messaging_event.proto. Neglecting fields that are supported.
+const SDK_PLATFORM_WEB = 3;
+const EVENT_MESSAGE_DELIVERED = 1;
+var MessageType$1;
+(function (MessageType) {
+    MessageType[MessageType["DATA_MESSAGE"] = 1] = "DATA_MESSAGE";
+    MessageType[MessageType["DISPLAY_NOTIFICATION"] = 3] = "DISPLAY_NOTIFICATION";
+})(MessageType$1 || (MessageType$1 = {}));
+
+/**
+ * @license
+ * Copyright 2018 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.
+ */
+var MessageType;
+(function (MessageType) {
+    MessageType["PUSH_RECEIVED"] = "push-received";
+    MessageType["NOTIFICATION_CLICKED"] = "notification-clicked";
+})(MessageType || (MessageType = {}));
+
+/**
+ * @license
+ * Copyright 2017 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 arrayToBase64(array) {
+    const uint8Array = new Uint8Array(array);
+    const base64String = btoa(String.fromCharCode(...uint8Array));
+    return base64String.replace(/=/g, '').replace(/\+/g, '-').replace(/\//g, '_');
+}
+function base64ToArray(base64String) {
+    const padding = '='.repeat((4 - (base64String.length % 4)) % 4);
+    const base64 = (base64String + padding)
+        .replace(/\-/g, '+')
+        .replace(/_/g, '/');
+    const rawData = atob(base64);
+    const outputArray = new Uint8Array(rawData.length);
+    for (let i = 0; i < rawData.length; ++i) {
+        outputArray[i] = rawData.charCodeAt(i);
+    }
+    return outputArray;
+}
+
+/**
+ * @license
+ * Copyright 2019 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 OLD_DB_NAME = 'fcm_token_details_db';
+/**
+ * The last DB version of 'fcm_token_details_db' was 4. This is one higher, so that the upgrade
+ * callback is called for all versions of the old DB.
+ */
+const OLD_DB_VERSION = 5;
+const OLD_OBJECT_STORE_NAME = 'fcm_token_object_Store';
+async function migrateOldDatabase(senderId) {
+    if ('databases' in indexedDB) {
+        // indexedDb.databases() is an IndexedDB v3 API and does not exist in all browsers. TODO: Remove
+        // typecast when it lands in TS types.
+        const databases = await indexedDB.databases();
+        const dbNames = databases.map(db => db.name);
+        if (!dbNames.includes(OLD_DB_NAME)) {
+            // old DB didn't exist, no need to open.
+            return null;
+        }
+    }
+    let tokenDetails = null;
+    const db = await idb.openDB(OLD_DB_NAME, OLD_DB_VERSION, {
+        upgrade: async (db, oldVersion, newVersion, upgradeTransaction) => {
+            if (oldVersion < 2) {
+                // Database too old, skip migration.
+                return;
+            }
+            if (!db.objectStoreNames.contains(OLD_OBJECT_STORE_NAME)) {
+                // Database did not exist. Nothing to do.
+                return;
+            }
+            const objectStore = upgradeTransaction.objectStore(OLD_OBJECT_STORE_NAME);
+            const value = await objectStore.index('fcmSenderId').get(senderId);
+            await objectStore.clear();
+            if (!value) {
+                // No entry in the database, nothing to migrate.
+                return;
+            }
+            if (oldVersion === 2) {
+                const oldDetails = value;
+                if (!oldDetails.auth || !oldDetails.p256dh || !oldDetails.endpoint) {
+                    return;
+                }
+                tokenDetails = {
+                    token: oldDetails.fcmToken,
+                    createTime: oldDetails.createTime ?? Date.now(),
+                    subscriptionOptions: {
+                        auth: oldDetails.auth,
+                        p256dh: oldDetails.p256dh,
+                        endpoint: oldDetails.endpoint,
+                        swScope: oldDetails.swScope,
+                        vapidKey: typeof oldDetails.vapidKey === 'string'
+                            ? oldDetails.vapidKey
+                            : arrayToBase64(oldDetails.vapidKey)
+                    }
+                };
+            }
+            else if (oldVersion === 3) {
+                const oldDetails = value;
+                tokenDetails = {
+                    token: oldDetails.fcmToken,
+                    createTime: oldDetails.createTime,
+                    subscriptionOptions: {
+                        auth: arrayToBase64(oldDetails.auth),
+                        p256dh: arrayToBase64(oldDetails.p256dh),
+                        endpoint: oldDetails.endpoint,
+                        swScope: oldDetails.swScope,
+                        vapidKey: arrayToBase64(oldDetails.vapidKey)
+                    }
+                };
+            }
+            else if (oldVersion === 4) {
+                const oldDetails = value;
+                tokenDetails = {
+                    token: oldDetails.fcmToken,
+                    createTime: oldDetails.createTime,
+                    subscriptionOptions: {
+                        auth: arrayToBase64(oldDetails.auth),
+                        p256dh: arrayToBase64(oldDetails.p256dh),
+                        endpoint: oldDetails.endpoint,
+                        swScope: oldDetails.swScope,
+                        vapidKey: arrayToBase64(oldDetails.vapidKey)
+                    }
+                };
+            }
+        }
+    });
+    db.close();
+    // Delete all old databases.
+    await idb.deleteDB(OLD_DB_NAME);
+    await idb.deleteDB('fcm_vapid_details_db');
+    await idb.deleteDB('undefined');
+    return checkTokenDetails(tokenDetails) ? tokenDetails : null;
+}
+function checkTokenDetails(tokenDetails) {
+    if (!tokenDetails || !tokenDetails.subscriptionOptions) {
+        return false;
+    }
+    const { subscriptionOptions } = tokenDetails;
+    return (typeof tokenDetails.createTime === 'number' &&
+        tokenDetails.createTime > 0 &&
+        typeof tokenDetails.token === 'string' &&
+        tokenDetails.token.length > 0 &&
+        typeof subscriptionOptions.auth === 'string' &&
+        subscriptionOptions.auth.length > 0 &&
+        typeof subscriptionOptions.p256dh === 'string' &&
+        subscriptionOptions.p256dh.length > 0 &&
+        typeof subscriptionOptions.endpoint === 'string' &&
+        subscriptionOptions.endpoint.length > 0 &&
+        typeof subscriptionOptions.swScope === 'string' &&
+        subscriptionOptions.swScope.length > 0 &&
+        typeof subscriptionOptions.vapidKey === 'string' &&
+        subscriptionOptions.vapidKey.length > 0);
+}
+
+/**
+ * @license
+ * Copyright 2019 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.
+ */
+// Exported for tests.
+const DATABASE_NAME = 'firebase-messaging-database';
+const DATABASE_VERSION = 1;
+const OBJECT_STORE_NAME = 'firebase-messaging-store';
+let dbPromise = null;
+function getDbPromise() {
+    if (!dbPromise) {
+        dbPromise = idb.openDB(DATABASE_NAME, DATABASE_VERSION, {
+            upgrade: (upgradeDb, oldVersion) => {
+                // 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 (oldVersion) {
+                    case 0:
+                        upgradeDb.createObjectStore(OBJECT_STORE_NAME);
+                }
+            }
+        });
+    }
+    return dbPromise;
+}
+/** Gets record(s) from the objectStore that match the given key. */
+async function dbGet(firebaseDependencies) {
+    const key = getKey(firebaseDependencies);
+    const db = await getDbPromise();
+    const tokenDetails = (await db
+        .transaction(OBJECT_STORE_NAME)
+        .objectStore(OBJECT_STORE_NAME)
+        .get(key));
+    if (tokenDetails) {
+        return tokenDetails;
+    }
+    else {
+        // Check if there is a tokenDetails object in the old DB.
+        const oldTokenDetails = await migrateOldDatabase(firebaseDependencies.appConfig.senderId);
+        if (oldTokenDetails) {
+            await dbSet(firebaseDependencies, oldTokenDetails);
+            return oldTokenDetails;
+        }
+    }
+}
+/** Assigns or overwrites the record for the given key with the given value. */
+async function dbSet(firebaseDependencies, tokenDetails) {
+    const key = getKey(firebaseDependencies);
+    const db = await getDbPromise();
+    const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
+    await tx.objectStore(OBJECT_STORE_NAME).put(tokenDetails, key);
+    await tx.done;
+    return tokenDetails;
+}
+/** Removes record(s) from the objectStore that match the given key. */
+async function dbRemove(firebaseDependencies) {
+    const key = getKey(firebaseDependencies);
+    const db = await getDbPromise();
+    const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
+    await tx.objectStore(OBJECT_STORE_NAME).delete(key);
+    await tx.done;
+}
+function getKey({ appConfig }) {
+    return appConfig.appId;
+}
+
+/**
+ * @license
+ * Copyright 2017 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 ERROR_MAP = {
+    ["missing-app-config-values" /* ErrorCode.MISSING_APP_CONFIG_VALUES */]: 'Missing App configuration value: "{$valueName}"',
+    ["only-available-in-window" /* ErrorCode.AVAILABLE_IN_WINDOW */]: 'This method is available in a Window context.',
+    ["only-available-in-sw" /* ErrorCode.AVAILABLE_IN_SW */]: 'This method is available in a service worker context.',
+    ["permission-default" /* ErrorCode.PERMISSION_DEFAULT */]: 'The notification permission was not granted and dismissed instead.',
+    ["permission-blocked" /* ErrorCode.PERMISSION_BLOCKED */]: 'The notification permission was not granted and blocked instead.',
+    ["unsupported-browser" /* ErrorCode.UNSUPPORTED_BROWSER */]: "This browser doesn't support the API's required to use the Firebase SDK.",
+    ["indexed-db-unsupported" /* ErrorCode.INDEXED_DB_UNSUPPORTED */]: "This browser doesn't support indexedDb.open() (ex. Safari iFrame, Firefox Private Browsing, etc)",
+    ["failed-service-worker-registration" /* ErrorCode.FAILED_DEFAULT_REGISTRATION */]: 'We are unable to register the default service worker. {$browserErrorMessage}',
+    ["token-subscribe-failed" /* ErrorCode.TOKEN_SUBSCRIBE_FAILED */]: 'A problem occurred while subscribing the user to FCM: {$errorInfo}',
+    ["token-subscribe-no-token" /* ErrorCode.TOKEN_SUBSCRIBE_NO_TOKEN */]: 'FCM returned no token when subscribing the user to push.',
+    ["token-unsubscribe-failed" /* ErrorCode.TOKEN_UNSUBSCRIBE_FAILED */]: 'A problem occurred while unsubscribing the ' +
+        'user from FCM: {$errorInfo}',
+    ["token-update-failed" /* ErrorCode.TOKEN_UPDATE_FAILED */]: 'A problem occurred while updating the user from FCM: {$errorInfo}',
+    ["token-update-no-token" /* ErrorCode.TOKEN_UPDATE_NO_TOKEN */]: 'FCM returned no token when updating the user to push.',
+    ["use-sw-after-get-token" /* ErrorCode.USE_SW_AFTER_GET_TOKEN */]: 'The useServiceWorker() method may only be called once and must be ' +
+        'called before calling getToken() to ensure your service worker is used.',
+    ["invalid-sw-registration" /* ErrorCode.INVALID_SW_REGISTRATION */]: 'The input to useServiceWorker() must be a ServiceWorkerRegistration.',
+    ["invalid-bg-handler" /* ErrorCode.INVALID_BG_HANDLER */]: 'The input to setBackgroundMessageHandler() must be a function.',
+    ["invalid-vapid-key" /* ErrorCode.INVALID_VAPID_KEY */]: 'The public VAPID key must be a string.',
+    ["use-vapid-key-after-get-token" /* ErrorCode.USE_VAPID_KEY_AFTER_GET_TOKEN */]: 'The usePublicVapidKey() method may only be called once and must be ' +
+        'called before calling getToken() to ensure your VAPID key is used.'
+};
+const ERROR_FACTORY = new util.ErrorFactory('messaging', 'Messaging', ERROR_MAP);
+
+/**
+ * @license
+ * Copyright 2019 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 requestGetToken(firebaseDependencies, subscriptionOptions) {
+    const headers = await getHeaders(firebaseDependencies);
+    const body = getBody(subscriptionOptions);
+    const subscribeOptions = {
+        method: 'POST',
+        headers,
+        body: JSON.stringify(body)
+    };
+    let responseData;
+    try {
+        const response = await fetch(getEndpoint(firebaseDependencies.appConfig), subscribeOptions);
+        responseData = await response.json();
+    }
+    catch (err) {
+        throw ERROR_FACTORY.create("token-subscribe-failed" /* ErrorCode.TOKEN_SUBSCRIBE_FAILED */, {
+            errorInfo: err?.toString()
+        });
+    }
+    if (responseData.error) {
+        const message = responseData.error.message;
+        throw ERROR_FACTORY.create("token-subscribe-failed" /* ErrorCode.TOKEN_SUBSCRIBE_FAILED */, {
+            errorInfo: message
+        });
+    }
+    if (!responseData.token) {
+        throw ERROR_FACTORY.create("token-subscribe-no-token" /* ErrorCode.TOKEN_SUBSCRIBE_NO_TOKEN */);
+    }
+    return responseData.token;
+}
+async function requestUpdateToken(firebaseDependencies, tokenDetails) {
+    const headers = await getHeaders(firebaseDependencies);
+    const body = getBody(tokenDetails.subscriptionOptions);
+    const updateOptions = {
+        method: 'PATCH',
+        headers,
+        body: JSON.stringify(body)
+    };
+    let responseData;
+    try {
+        const response = await fetch(`${getEndpoint(firebaseDependencies.appConfig)}/${tokenDetails.token}`, updateOptions);
+        responseData = await response.json();
+    }
+    catch (err) {
+        throw ERROR_FACTORY.create("token-update-failed" /* ErrorCode.TOKEN_UPDATE_FAILED */, {
+            errorInfo: err?.toString()
+        });
+    }
+    if (responseData.error) {
+        const message = responseData.error.message;
+        throw ERROR_FACTORY.create("token-update-failed" /* ErrorCode.TOKEN_UPDATE_FAILED */, {
+            errorInfo: message
+        });
+    }
+    if (!responseData.token) {
+        throw ERROR_FACTORY.create("token-update-no-token" /* ErrorCode.TOKEN_UPDATE_NO_TOKEN */);
+    }
+    return responseData.token;
+}
+async function requestDeleteToken(firebaseDependencies, token) {
+    const headers = await getHeaders(firebaseDependencies);
+    const unsubscribeOptions = {
+        method: 'DELETE',
+        headers
+    };
+    try {
+        const response = await fetch(`${getEndpoint(firebaseDependencies.appConfig)}/${token}`, unsubscribeOptions);
+        const responseData = await response.json();
+        if (responseData.error) {
+            const message = responseData.error.message;
+            throw ERROR_FACTORY.create("token-unsubscribe-failed" /* ErrorCode.TOKEN_UNSUBSCRIBE_FAILED */, {
+                errorInfo: message
+            });
+        }
+    }
+    catch (err) {
+        throw ERROR_FACTORY.create("token-unsubscribe-failed" /* ErrorCode.TOKEN_UNSUBSCRIBE_FAILED */, {
+            errorInfo: err?.toString()
+        });
+    }
+}
+function getEndpoint({ projectId }) {
+    return `${ENDPOINT}/projects/${projectId}/registrations`;
+}
+async function getHeaders({ appConfig, installations }) {
+    const authToken = await installations.getToken();
+    return new Headers({
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+        'x-goog-api-key': appConfig.apiKey,
+        'x-goog-firebase-installations-auth': `FIS ${authToken}`
+    });
+}
+function getBody({ p256dh, auth, endpoint, vapidKey }) {
+    const body = {
+        web: {
+            endpoint,
+            auth,
+            p256dh
+        }
+    };
+    if (vapidKey !== DEFAULT_VAPID_KEY) {
+        body.web.applicationPubKey = vapidKey;
+    }
+    return body;
+}
+
+/**
+ * @license
+ * Copyright 2019 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.
+ */
+// UpdateRegistration will be called once every week.
+const TOKEN_EXPIRATION_MS = 7 * 24 * 60 * 60 * 1000; // 7 days
+async function getTokenInternal(messaging) {
+    const pushSubscription = await getPushSubscription(messaging.swRegistration, messaging.vapidKey);
+    const subscriptionOptions = {
+        vapidKey: messaging.vapidKey,
+        swScope: messaging.swRegistration.scope,
+        endpoint: pushSubscription.endpoint,
+        auth: arrayToBase64(pushSubscription.getKey('auth')),
+        p256dh: arrayToBase64(pushSubscription.getKey('p256dh'))
+    };
+    const tokenDetails = await dbGet(messaging.firebaseDependencies);
+    if (!tokenDetails) {
+        // No token, get a new one.
+        return getNewToken(messaging.firebaseDependencies, subscriptionOptions);
+    }
+    else if (!isTokenValid(tokenDetails.subscriptionOptions, subscriptionOptions)) {
+        // Invalid token, get a new one.
+        try {
+            await requestDeleteToken(messaging.firebaseDependencies, tokenDetails.token);
+        }
+        catch (e) {
+            // Suppress errors because of #2364
+            console.warn(e);
+        }
+        return getNewToken(messaging.firebaseDependencies, subscriptionOptions);
+    }
+    else if (Date.now() >= tokenDetails.createTime + TOKEN_EXPIRATION_MS) {
+        // Weekly token refresh
+        return updateToken(messaging, {
+            token: tokenDetails.token,
+            createTime: Date.now(),
+            subscriptionOptions
+        });
+    }
+    else {
+        // Valid token, nothing to do.
+        return tokenDetails.token;
+    }
+}
+/**
+ * This method deletes the token from the database, unsubscribes the token from FCM, and unregisters
+ * the push subscription if it exists.
+ */
+async function deleteTokenInternal(messaging) {
+    const tokenDetails = await dbGet(messaging.firebaseDependencies);
+    if (tokenDetails) {
+        await requestDeleteToken(messaging.firebaseDependencies, tokenDetails.token);
+        await dbRemove(messaging.firebaseDependencies);
+    }
+    // Unsubscribe from the push subscription.
+    const pushSubscription = await messaging.swRegistration.pushManager.getSubscription();
+    if (pushSubscription) {
+        return pushSubscription.unsubscribe();
+    }
+    // If there's no SW, consider it a success.
+    return true;
+}
+async function updateToken(messaging, tokenDetails) {
+    try {
+        const updatedToken = await requestUpdateToken(messaging.firebaseDependencies, tokenDetails);
+        const updatedTokenDetails = {
+            ...tokenDetails,
+            token: updatedToken,
+            createTime: Date.now()
+        };
+        await dbSet(messaging.firebaseDependencies, updatedTokenDetails);
+        return updatedToken;
+    }
+    catch (e) {
+        throw e;
+    }
+}
+async function getNewToken(firebaseDependencies, subscriptionOptions) {
+    const token = await requestGetToken(firebaseDependencies, subscriptionOptions);
+    const tokenDetails = {
+        token,
+        createTime: Date.now(),
+        subscriptionOptions
+    };
+    await dbSet(firebaseDependencies, tokenDetails);
+    return tokenDetails.token;
+}
+/**
+ * Gets a PushSubscription for the current user.
+ */
+async function getPushSubscription(swRegistration, vapidKey) {
+    const subscription = await swRegistration.pushManager.getSubscription();
+    if (subscription) {
+        return subscription;
+    }
+    return swRegistration.pushManager.subscribe({
+        userVisibleOnly: true,
+        // Chrome <= 75 doesn't support base64-encoded VAPID key. For backward compatibility, VAPID key
+        // submitted to pushManager#subscribe must be of type Uint8Array.
+        applicationServerKey: base64ToArray(vapidKey)
+    });
+}
+/**
+ * Checks if the saved tokenDetails object matches the configuration provided.
+ */
+function isTokenValid(dbOptions, currentOptions) {
+    const isVapidKeyEqual = currentOptions.vapidKey === dbOptions.vapidKey;
+    const isEndpointEqual = currentOptions.endpoint === dbOptions.endpoint;
+    const isAuthEqual = currentOptions.auth === dbOptions.auth;
+    const isP256dhEqual = currentOptions.p256dh === dbOptions.p256dh;
+    return isVapidKeyEqual && isEndpointEqual && isAuthEqual && isP256dhEqual;
+}
+
+/**
+ * @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 externalizePayload(internalPayload) {
+    const payload = {
+        from: internalPayload.from,
+        // eslint-disable-next-line camelcase
+        collapseKey: internalPayload.collapse_key,
+        // eslint-disable-next-line camelcase
+        messageId: internalPayload.fcmMessageId
+    };
+    propagateNotificationPayload(payload, internalPayload);
+    propagateDataPayload(payload, internalPayload);
+    propagateFcmOptions(payload, internalPayload);
+    return payload;
+}
+function propagateNotificationPayload(payload, messagePayloadInternal) {
+    if (!messagePayloadInternal.notification) {
+        return;
+    }
+    payload.notification = {};
+    const title = messagePayloadInternal.notification.title;
+    if (!!title) {
+        payload.notification.title = title;
+    }
+    const body = messagePayloadInternal.notification.body;
+    if (!!body) {
+        payload.notification.body = body;
+    }
+    const image = messagePayloadInternal.notification.image;
+    if (!!image) {
+        payload.notification.image = image;
+    }
+    const icon = messagePayloadInternal.notification.icon;
+    if (!!icon) {
+        payload.notification.icon = icon;
+    }
+}
+function propagateDataPayload(payload, messagePayloadInternal) {
+    if (!messagePayloadInternal.data) {
+        return;
+    }
+    payload.data = messagePayloadInternal.data;
+}
+function propagateFcmOptions(payload, messagePayloadInternal) {
+    // fcmOptions.link value is written into notification.click_action. see more in b/232072111
+    if (!messagePayloadInternal.fcmOptions &&
+        !messagePayloadInternal.notification?.click_action) {
+        return;
+    }
+    payload.fcmOptions = {};
+    const link = messagePayloadInternal.fcmOptions?.link ??
+        messagePayloadInternal.notification?.click_action;
+    if (!!link) {
+        payload.fcmOptions.link = link;
+    }
+    // eslint-disable-next-line camelcase
+    const analyticsLabel = messagePayloadInternal.fcmOptions?.analytics_label;
+    if (!!analyticsLabel) {
+        payload.fcmOptions.analyticsLabel = analyticsLabel;
+    }
+}
+
+/**
+ * @license
+ * Copyright 2019 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 isConsoleMessage(data) {
+    // This message has a campaign ID, meaning it was sent using the Firebase Console.
+    return typeof data === 'object' && !!data && CONSOLE_CAMPAIGN_ID in data;
+}
+
+/**
+ * @license
+ * Copyright 2019 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.
+ */
+/** Returns a promise that resolves after given time passes. */
+function sleep(ms) {
+    return new Promise(resolve => {
+        setTimeout(resolve, ms);
+    });
+}
+
+/**
+ * @license
+ * Copyright 2019 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.
+ */
+_mergeStrings('AzSCbw63g1R0nCw85jG8', 'Iaya3yLKwmgvh7cF0q4');
+async function stageLog(messaging, internalPayload) {
+    const fcmEvent = createFcmEvent(internalPayload, await messaging.firebaseDependencies.installations.getId());
+    createAndEnqueueLogEvent(messaging, fcmEvent, internalPayload.productId);
+}
+function createFcmEvent(internalPayload, fid) {
+    const fcmEvent = {};
+    /* eslint-disable camelcase */
+    // some fields should always be non-null. Still check to ensure.
+    if (!!internalPayload.from) {
+        fcmEvent.project_number = internalPayload.from;
+    }
+    if (!!internalPayload.fcmMessageId) {
+        fcmEvent.message_id = internalPayload.fcmMessageId;
+    }
+    fcmEvent.instance_id = fid;
+    if (!!internalPayload.notification) {
+        fcmEvent.message_type = MessageType$1.DISPLAY_NOTIFICATION.toString();
+    }
+    else {
+        fcmEvent.message_type = MessageType$1.DATA_MESSAGE.toString();
+    }
+    fcmEvent.sdk_platform = SDK_PLATFORM_WEB.toString();
+    fcmEvent.package_name = self.origin.replace(/(^\w+:|^)\/\//, '');
+    if (!!internalPayload.collapse_key) {
+        fcmEvent.collapse_key = internalPayload.collapse_key;
+    }
+    fcmEvent.event = EVENT_MESSAGE_DELIVERED.toString();
+    if (!!internalPayload.fcmOptions?.analytics_label) {
+        fcmEvent.analytics_label = internalPayload.fcmOptions?.analytics_label;
+    }
+    /* eslint-enable camelcase */
+    return fcmEvent;
+}
+function createAndEnqueueLogEvent(messaging, fcmEvent, productId) {
+    const logEvent = {};
+    /* eslint-disable camelcase */
+    logEvent.event_time_ms = Math.floor(Date.now()).toString();
+    logEvent.source_extension_json_proto3 = JSON.stringify({
+        messaging_client_event: fcmEvent
+    });
+    if (!!productId) {
+        logEvent.compliance_data = buildComplianceData(productId);
+    }
+    // eslint-disable-next-line camelcase
+    messaging.logEvents.push(logEvent);
+}
+function buildComplianceData(productId) {
+    const complianceData = {
+        privacy_context: {
+            prequest: {
+                origin_associated_product_id: productId
+            }
+        }
+    };
+    return complianceData;
+}
+function _mergeStrings(s1, s2) {
+    const resultArray = [];
+    for (let i = 0; i < s1.length; i++) {
+        resultArray.push(s1.charAt(i));
+        if (i < s2.length) {
+            resultArray.push(s2.charAt(i));
+        }
+    }
+    return resultArray.join('');
+}
+
+/**
+ * @license
+ * Copyright 2017 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 onSubChange(event, messaging) {
+    const { newSubscription } = event;
+    if (!newSubscription) {
+        // Subscription revoked, delete token
+        await deleteTokenInternal(messaging);
+        return;
+    }
+    const tokenDetails = await dbGet(messaging.firebaseDependencies);
+    await deleteTokenInternal(messaging);
+    messaging.vapidKey =
+        tokenDetails?.subscriptionOptions?.vapidKey ?? DEFAULT_VAPID_KEY;
+    await getTokenInternal(messaging);
+}
+async function onPush(event, messaging) {
+    const internalPayload = getMessagePayloadInternal(event);
+    if (!internalPayload) {
+        // Failed to get parsed MessagePayload from the PushEvent. Skip handling the push.
+        return;
+    }
+    // log to Firelog with user consent
+    if (messaging.deliveryMetricsExportedToBigQueryEnabled) {
+        await stageLog(messaging, internalPayload);
+    }
+    // foreground handling: eventually passed to onMessage hook
+    const clientList = await getClientList();
+    if (hasVisibleClients(clientList)) {
+        return sendMessagePayloadInternalToWindows(clientList, internalPayload);
+    }
+    // background handling: display if possible and pass to onBackgroundMessage hook
+    if (!!internalPayload.notification) {
+        await showNotification(wrapInternalPayload(internalPayload));
+    }
+    if (!messaging) {
+        return;
+    }
+    if (!!messaging.onBackgroundMessageHandler) {
+        const payload = externalizePayload(internalPayload);
+        if (typeof messaging.onBackgroundMessageHandler === 'function') {
+            await messaging.onBackgroundMessageHandler(payload);
+        }
+        else {
+            messaging.onBackgroundMessageHandler.next(payload);
+        }
+    }
+}
+async function onNotificationClick(event) {
+    const internalPayload = event.notification?.data?.[FCM_MSG];
+    if (!internalPayload) {
+        return;
+    }
+    else if (event.action) {
+        // User clicked on an action button. This will allow developers to act on action button clicks
+        // by using a custom onNotificationClick listener that they define.
+        return;
+    }
+    // Prevent other listeners from receiving the event
+    event.stopImmediatePropagation();
+    event.notification.close();
+    // Note clicking on a notification with no link set will focus the Chrome's current tab.
+    const link = getLink(internalPayload);
+    if (!link) {
+        return;
+    }
+    // FM should only open/focus links from app's origin.
+    const url = new URL(link, self.location.href);
+    const originUrl = new URL(self.location.origin);
+    if (url.host !== originUrl.host) {
+        return;
+    }
+    let client = await getWindowClient(url);
+    if (!client) {
+        client = await self.clients.openWindow(link);
+        // Wait three seconds for the client to initialize and set up the message handler so that it
+        // can receive the message.
+        await sleep(3000);
+    }
+    else {
+        client = await client.focus();
+    }
+    if (!client) {
+        // Window Client will not be returned if it's for a third party origin.
+        return;
+    }
+    internalPayload.messageType = MessageType.NOTIFICATION_CLICKED;
+    internalPayload.isFirebaseMessaging = true;
+    return client.postMessage(internalPayload);
+}
+function wrapInternalPayload(internalPayload) {
+    const wrappedInternalPayload = {
+        ...internalPayload.notification
+    };
+    // Put the message payload under FCM_MSG name so we can identify the notification as being an FCM
+    // notification vs a notification from somewhere else (i.e. normal web push or developer generated
+    // notification).
+    wrappedInternalPayload.data = {
+        [FCM_MSG]: internalPayload
+    };
+    return wrappedInternalPayload;
+}
+function getMessagePayloadInternal({ data }) {
+    if (!data) {
+        return null;
+    }
+    try {
+        return data.json();
+    }
+    catch (err) {
+        // Not JSON so not an FCM message.
+        return null;
+    }
+}
+/**
+ * @param url The URL to look for when focusing a client.
+ * @return Returns an existing window client or a newly opened WindowClient.
+ */
+async function getWindowClient(url) {
+    const clientList = await getClientList();
+    for (const client of clientList) {
+        const clientUrl = new URL(client.url, self.location.href);
+        if (url.host === clientUrl.host) {
+            return client;
+        }
+    }
+    return null;
+}
+/**
+ * @returns If there is currently a visible WindowClient, this method will resolve to true,
+ * otherwise false.
+ */
+function hasVisibleClients(clientList) {
+    return clientList.some(client => client.visibilityState === 'visible' &&
+        // Ignore chrome-extension clients as that matches the background pages of extensions, which
+        // are always considered visible for some reason.
+        !client.url.startsWith('chrome-extension://'));
+}
+function sendMessagePayloadInternalToWindows(clientList, internalPayload) {
+    internalPayload.isFirebaseMessaging = true;
+    internalPayload.messageType = MessageType.PUSH_RECEIVED;
+    for (const client of clientList) {
+        client.postMessage(internalPayload);
+    }
+}
+function getClientList() {
+    return self.clients.matchAll({
+        type: 'window',
+        includeUncontrolled: true
+        // TS doesn't know that "type: 'window'" means it'll return WindowClient[]
+    });
+}
+function showNotification(notificationPayloadInternal) {
+    // Note: Firefox does not support the maxActions property.
+    // https://developer.mozilla.org/en-US/docs/Web/API/notification/maxActions
+    const { actions } = notificationPayloadInternal;
+    const { maxActions } = Notification;
+    if (actions && maxActions && actions.length > maxActions) {
+        console.warn(`This browser only supports ${maxActions} actions. The remaining actions will not be displayed.`);
+    }
+    return self.registration.showNotification(
+    /* title= */ notificationPayloadInternal.title ?? '', notificationPayloadInternal);
+}
+function getLink(payload) {
+    // eslint-disable-next-line camelcase
+    const link = payload.fcmOptions?.link ?? payload.notification?.click_action;
+    if (link) {
+        return link;
+    }
+    if (isConsoleMessage(payload.data)) {
+        // Notification created in the Firebase Console. Redirect to origin.
+        return self.location.origin;
+    }
+    else {
+        return null;
+    }
+}
+
+/**
+ * @license
+ * Copyright 2019 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 extractAppConfig(app) {
+    if (!app || !app.options) {
+        throw getMissingValueError('App Configuration Object');
+    }
+    if (!app.name) {
+        throw getMissingValueError('App Name');
+    }
+    // Required app config keys
+    const configKeys = [
+        'projectId',
+        'apiKey',
+        'appId',
+        'messagingSenderId'
+    ];
+    const { options } = app;
+    for (const keyName of configKeys) {
+        if (!options[keyName]) {
+            throw getMissingValueError(keyName);
+        }
+    }
+    return {
+        appName: app.name,
+        projectId: options.projectId,
+        apiKey: options.apiKey,
+        appId: options.appId,
+        senderId: options.messagingSenderId
+    };
+}
+function getMissingValueError(valueName) {
+    return ERROR_FACTORY.create("missing-app-config-values" /* ErrorCode.MISSING_APP_CONFIG_VALUES */, {
+        valueName
+    });
+}
+
+/**
+ * @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.
+ */
+class MessagingService {
+    constructor(app, installations, analyticsProvider) {
+        // logging is only done with end user consent. Default to false.
+        this.deliveryMetricsExportedToBigQueryEnabled = false;
+        this.onBackgroundMessageHandler = null;
+        this.onMessageHandler = null;
+        this.logEvents = [];
+        this.isLogServiceStarted = false;
+        const appConfig = extractAppConfig(app);
+        this.firebaseDependencies = {
+            app,
+            appConfig,
+            installations,
+            analyticsProvider
+        };
+    }
+    _delete() {
+        return Promise.resolve();
+    }
+}
+
+/**
+ * @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 SwMessagingFactory = (container) => {
+    const messaging = new MessagingService(container.getProvider('app').getImmediate(), container.getProvider('installations-internal').getImmediate(), container.getProvider('analytics-internal'));
+    self.addEventListener('push', e => {
+        e.waitUntil(onPush(e, messaging));
+    });
+    self.addEventListener('pushsubscriptionchange', e => {
+        e.waitUntil(onSubChange(e, messaging));
+    });
+    self.addEventListener('notificationclick', e => {
+        e.waitUntil(onNotificationClick(e));
+    });
+    return messaging;
+};
+/**
+ * The messaging instance registered in sw is named differently than that of in client. This is
+ * because both `registerMessagingInWindow` and `registerMessagingInSw` would be called in
+ * `messaging-compat` and component with the same name can only be registered once.
+ */
+function registerMessagingInSw() {
+    app._registerComponent(new component.Component('messaging-sw', SwMessagingFactory, "PUBLIC" /* ComponentType.PUBLIC */));
+}
+
+/**
+ * @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.
+ */
+/**
+ * Checks whether all required APIs exist within SW Context
+ * @returns a Promise that resolves to a boolean.
+ *
+ * @public
+ */
+async function isSwSupported() {
+    // firebase-js-sdk/issues/2393 reveals that idb#open in Safari iframe and Firefox private browsing
+    // might be prohibited to run. In these contexts, an error would be thrown during the messaging
+    // instantiating phase, informing the developers to import/call isSupported for special handling.
+    return (util.isIndexedDBAvailable() &&
+        (await util.validateIndexedDBOpenable()) &&
+        'PushManager' in self &&
+        'Notification' in self &&
+        ServiceWorkerRegistration.prototype.hasOwnProperty('showNotification') &&
+        PushSubscription.prototype.hasOwnProperty('getKey'));
+}
+
+/**
+ * @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 onBackgroundMessage$1(messaging, nextOrObserver) {
+    if (self.document !== undefined) {
+        throw ERROR_FACTORY.create("only-available-in-sw" /* ErrorCode.AVAILABLE_IN_SW */);
+    }
+    messaging.onBackgroundMessageHandler = nextOrObserver;
+    return () => {
+        messaging.onBackgroundMessageHandler = null;
+    };
+}
+
+/**
+ * @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 _setDeliveryMetricsExportedToBigQueryEnabled(messaging, enable) {
+    messaging.deliveryMetricsExportedToBigQueryEnabled =
+        enable;
+}
+
+/**
+ * @license
+ * Copyright 2017 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.
+ */
+/**
+ * Retrieves a Firebase Cloud Messaging instance.
+ *
+ * @returns The Firebase Cloud Messaging instance associated with the provided firebase app.
+ *
+ * @public
+ */
+function getMessagingInSw(app$1 = app.getApp()) {
+    // Conscious decision to make this async check non-blocking during the messaging instance
+    // initialization phase for performance consideration. An error would be thrown latter for
+    // developer's information. Developers can then choose to import and call `isSupported` for
+    // special handling.
+    isSwSupported().then(isSupported => {
+        // If `isSwSupported()` resolved, but returned false.
+        if (!isSupported) {
+            throw ERROR_FACTORY.create("unsupported-browser" /* ErrorCode.UNSUPPORTED_BROWSER */);
+        }
+    }, _ => {
+        // If `isSwSupported()` rejected.
+        throw ERROR_FACTORY.create("indexed-db-unsupported" /* ErrorCode.INDEXED_DB_UNSUPPORTED */);
+    });
+    return app._getProvider(util.getModularInstance(app$1), 'messaging-sw').getImmediate();
+}
+/**
+ * Called when a message is received while the app is in the background. An app is considered to be
+ * in the background if no active window is displayed.
+ *
+ * @param messaging - The {@link Messaging} instance.
+ * @param nextOrObserver - This function, or observer object with `next` defined, is called when a
+ * message is received and the app is currently in the background.
+ *
+ * @returns To stop listening for messages execute this returned function
+ *
+ * @public
+ */
+function onBackgroundMessage(messaging, nextOrObserver) {
+    messaging = util.getModularInstance(messaging);
+    return onBackgroundMessage$1(messaging, nextOrObserver);
+}
+/**
+ * Enables or disables Firebase Cloud Messaging message delivery metrics export to BigQuery. By
+ * default, message delivery metrics are not exported to BigQuery. Use this method to enable or
+ * disable the export at runtime.
+ *
+ * @param messaging - The `FirebaseMessaging` instance.
+ * @param enable - Whether Firebase Cloud Messaging should export message delivery metrics to
+ * BigQuery.
+ *
+ * @public
+ */
+function experimentalSetDeliveryMetricsExportedToBigQueryEnabled(messaging, enable) {
+    messaging = util.getModularInstance(messaging);
+    return _setDeliveryMetricsExportedToBigQueryEnabled(messaging, enable);
+}
+
+/**
+ * @license
+ * Copyright 2017 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.
+ */
+registerMessagingInSw();
+
+exports.experimentalSetDeliveryMetricsExportedToBigQueryEnabled = experimentalSetDeliveryMetricsExportedToBigQueryEnabled;
+exports.getMessaging = getMessagingInSw;
+exports.isSupported = isSwSupported;
+exports.onBackgroundMessage = onBackgroundMessage;
+//# sourceMappingURL=index.sw.cjs.map