import { Observable } from 'rxjs';
export declare class DialogRef<R = any> {
    private _destroy;
    private _afterClosed;
    constructor(_destroy: (result?: R) => void);
    /** Call from inside your dialog content component to close it. */
    close(result?: R): void;
    /** Subscribe to get the result once the dialog closes. */
    afterClosed(): Observable<R | undefined>;
    /** @internal called by DialogService once teardown starts */
    _emitClosed(result?: R): void;
}