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.
npm install @fseehawer/requestidlecallback 
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.
``
npm install @fseehawer/requestidlecallback
`javascript
import requestIdleCallback from '@fseehawer/requestidlecallback'
requestIdleCallback(() => {
// your non-splittable task
})
`
for splittable task you can use the yielding technique:
`javascript`
requestIdleCallback((deadline) => {
while ((deadline.timeRemaining() > 0) || deadline.didTimeout) {
// your splittable tasks
}
})
`javascript
import requestIdleCallback from '@fseehawer/requestidlecallback';
requestIdleCallback.promise({ timeout: 100 }).then((deadline) => {
// Use the idle deadline to perform tasks
});
`
`javascript
import requestIdleCallback, { cancelIdleCallback } from '@fseehawer/requestidlecallback'
// your code
const id = requestIdleCallback(doSomething)
// then if you need to cancel
cancelIdleCallback(id)
``