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1 files changed, 51 insertions, 0 deletions

diff --git a/frontend-old/node_modules/web-vitals/src/lib/getLoadState.ts b/frontend-old/node_modules/web-vitals/src/lib/getLoadState.ts
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index 0000000..788db0f
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+++ b/frontend-old/node_modules/web-vitals/src/lib/getLoadState.ts
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2022 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
+ *
+ *     https://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 {getNavigationEntry} from './getNavigationEntry.js';
+import {LoadState} from '../types.js';
+
+export const getLoadState = (timestamp: number): LoadState => {
+  if (document.readyState === 'loading') {
+    // If the `readyState` is 'loading' there's no need to look at timestamps
+    // since the timestamp has to be the current time or earlier.
+    return 'loading';
+  } else {
+    const navigationEntry = getNavigationEntry();
+    if (navigationEntry) {
+      if (timestamp < navigationEntry.domInteractive) {
+        return 'loading';
+      } else if (
+        navigationEntry.domContentLoadedEventStart === 0 ||
+        timestamp < navigationEntry.domContentLoadedEventStart
+      ) {
+        // If the `domContentLoadedEventStart` timestamp has not yet been
+        // set, or if the given timestamp is less than that value.
+        return 'dom-interactive';
+      } else if (
+        navigationEntry.domComplete === 0 ||
+        timestamp < navigationEntry.domComplete
+      ) {
+        // If the `domComplete` timestamp has not yet been
+        // set, or if the given timestamp is less than that value.
+        return 'dom-content-loaded';
+      }
+    }
+  }
+  // If any of the above fail, default to loaded. This could really only
+  // happy if the browser doesn't support the performance timeline, which
+  // most likely means this code would never run anyway.
+  return 'complete';
+};