1 files changed, 38 insertions, 0 deletions
diff --git a/frontend-old/node_modules/web-vitals/src/lib/whenIdle.ts b/frontend-old/node_modules/web-vitals/src/lib/whenIdle.ts
new file mode 100644
index 0000000..9abb30c
--- /dev/null
+++ b/frontend-old/node_modules/web-vitals/src/lib/whenIdle.ts
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2024 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 {onHidden} from './onHidden.js';
+import {runOnce} from './runOnce.js';
+
+/**
+ * Runs the passed callback during the next idle period, or immediately
+ * if the browser's visibility state is (or becomes) hidden.
+ */
+export const whenIdle = (cb: () => void): number => {
+  const rIC = self.requestIdleCallback || self.setTimeout;
+
+  let handle = -1;
+  cb = runOnce(cb);
+  // If the document is hidden, run the callback immediately, otherwise
+  // race an idle callback with the next `visibilitychange` event.
+  if (document.visibilityState === 'hidden') {
+    cb();
+  } else {
+    handle = rIC(cb);
+    onHidden(cb);
+  }
+  return handle;
+};