/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.dev/license
 */
import { AbstractType } from '../interface/type';
import { InjectionToken } from '../di/injection_token';
import type { EnvironmentProviders } from '../di/interface/provider';
/**
 * Service which configures custom 'on idle' behavior for Angular features like `@defer`.
 *
 * @publicApi
 *
 * @see [Customizing `idle` behavior](guide/templates/defer#customizing-idle-behavior)
 *
 */
export interface IdleService {
    /**
     * Schedule `callback` to be executed when the current application or browser is considered idle.
     *
     * @returns an id which allows the scheduled callback to be cancelled before it executes.
     */
    requestOnIdle(callback: (deadline?: IdleDeadline) => void, options?: IdleRequestOptions): number;
    /**
     * Cancel a previously scheduled callback using the id associated with it.
     */
    cancelOnIdle(id: number): void;
}
export declare const IDLE_SERVICE: InjectionToken<IdleService>;
/**
 * Configures Angular to use the given DI token as its `IdleService`.
 *
 * The given token must be available for injection from the root injector, and the injected value
 * must implement the `IdleService` interface.
 *
 * @publicApi
 *
 * @see [Customizing `idle` behavior](guide/templates/defer#customizing-idle-behavior)
 */
export declare function provideIdleServiceWith(useExisting: AbstractType<IdleService> | InjectionToken<IdleService>): EnvironmentProviders;