import { BehaviorSubject } from 'rxjs';
import { InjectionToken, ValueProvider } from '@angular/core';
/**
 * An injectable token used for providing the maps api ready promise globally in the app.
 *
 * The promise is created and managed by the [`GoogleMapsInternalApiService`](/docs/injectables/GoogleMapsInternalApiService.html)
 * then fed to the token.
 *
 * @internal
 */
export declare const GoogleMapsApiReadyPromise: InjectionToken<BehaviorSubject<Promise<void>>>;
/**
 * The subject that will be used to feed the system with the maps api ready promise, and to read it as well.
 *
 * @internal
 */
export declare const DefaultApiReadyPromiseProvider: BehaviorSubject<any>;
/**
 * Provides the subject that will be used to feed the system with the maps api ready promise, and to read it as well, for the `GoogleMapsApiReadyPromise` token.
 *
 * @internal
 **/
export declare const GoogleMapsApiReadyPromiseProvider: ValueProvider;