import { SwUpdate } from '@angular/service-worker';
import { MatDialog } from '@angular/material/dialog';
/**
 * @module
 * @ignore
 */
/**
 * Checks service worker if there is an available update.
 * If update available, try to use ngsw-config.json appData for shown dialog title, description, version, and askToUpdate.
 * Dialog will not be shown (thus new version will not be loaded until next page refresh) if askToUpdate is False.
 */
export declare class PromptUpdateService {
    dialog: MatDialog;
    constructor(updates: SwUpdate, dialog: MatDialog);
}
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