sanity/src/core/components/hookCollection/requestIdleCallback.ts

Sanity is a real-time content infrastructure with a scalable, hosted backend featuring a Graph Oriented Query Language (GROQ), asset pipelines and fast edge caches

const requestIdleCallbackShim: Window['requestIdleCallback'] = (callback) => {
  const start = Date.now()

  return setTimeout(() => {
    callback({
      didTimeout: false,
      timeRemaining() {
        return Math.max(0, Date.now() - start)
      },
    })
  }, 1) as unknown as ReturnType<Window['requestIdleCallback']>
}

const cancelIdleCallbackShim: Window['cancelIdleCallback'] = (handle: unknown) => {
  return clearTimeout(handle as any)
}

const _requestIdleCallback =
  typeof requestIdleCallback === 'undefined' ? requestIdleCallbackShim : requestIdleCallback
const _cancelIdleCallback =
  typeof cancelIdleCallback === 'undefined' ? cancelIdleCallbackShim : cancelIdleCallback

export {_requestIdleCallback as requestIdleCallback}
export {_cancelIdleCallback as cancelIdleCallback}