requestIdleCallback method
Implementation
int requestIdleCallback(IdleRequestCallback callback,
[IdleRequestOptions? options]) =>
js_util.callMethod(
this, 'requestIdleCallback', [allowInterop(callback), options]);
int requestIdleCallback(IdleRequestCallback callback,
[IdleRequestOptions? options]) =>
js_util.callMethod(
this, 'requestIdleCallback', [allowInterop(callback), options]);