nuxt/dist/app/compat/idle-callback.js

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export const requestIdleCallback = process.server ? () => {
} : globalThis.requestIdleCallback || ((cb) => {
  const start = Date.now();
  const idleDeadline = {
    didTimeout: false,
    timeRemaining: () => Math.max(0, 50 - (Date.now() - start))
  };
  return setTimeout(() => {
    cb(idleDeadline);
  }, 1);
});
export const cancelIdleCallback = process.server ? () => {
} : globalThis.cancelIdleCallback || ((id) => {
  clearTimeout(id);
});