README.md

requestIdleCallback polyfill

This requestIdleCallback polyfill doesn't use the window object to detect if the feature is supported in the browser and falls back to a simple timeout if the feature isn't supported.

install

npm install @fseehawer/requestidlecallback

example

import requestIdleCallback from '@fseehawer/requestidlecallback'

requestIdleCallback(() => {
  // your non-splittable task
})

for splittable task you can use the yielding technique:

requestIdleCallback((deadline) => {
  while ((deadline.timeRemaining() > 0) || deadline.didTimeout) {
    // your splittable tasks
  }
})

Using the Promise-based API

import requestIdleCallback from '@fseehawer/requestidlecallback';

requestIdleCallback.promise({ timeout: 100 }).then((deadline) => {
// Use the idle deadline to perform tasks
});

for cancelling?

import requestIdleCallback, { cancelIdleCallback } from '@fseehawer/requestidlecallback'

// your code
const id = requestIdleCallback(doSomething)

// then if you need to cancel
cancelIdleCallback(id)

license

MIT License