type RequestIdleCallbackHandle = any;
type RequestIdleCallbackOptions = {
  timeout: number;
};
type RequestIdleCallbackDeadline = {
  readonly didTimeout: boolean;
  timeRemaining: () => number;
};

declare function requestIdleCallback(
  callback: (deadline: RequestIdleCallbackDeadline) => void,
  opts?: RequestIdleCallbackOptions
): RequestIdleCallbackHandle;

declare function cancelIdleCallback(handle: RequestIdleCallbackHandle): void;

declare module 'ember-compatibility-helpers';