export type Attributes = {
    [key: string]: any;
};
/**
 * Patched version of requestAnimationFrame that avoids ngzone
 * Use only when you know ngzone should not run
 */
export declare const raf: (h: FrameRequestCallback) => number;
/**
 * Waits for a component to be ready for
 * both custom element and non-custom element builds.
 * If non-custom element build, el.componentOnReady
 * will be used.
 * For custom element builds, we wait a frame
 * so that the inner contents of the component
 * have a chance to render.
 *
 * Use this utility rather than calling
 * el.componentOnReady yourself.
 */
export declare const componentOnReady: (el: any, callback: any) => void;
export declare const addEventListener: (el: any, eventName: string, callback: any, opts?: any) => any;
export declare const removeEventListener: (el: any, eventName: string, callback: any, opts?: any) => any;