import * as i0 from "@angular/core";
export declare class KeyboardService {
    private logger;
    constructor();
    listen(keyNameOrKeyNames: Array<string> | string): import("rxjs").Observable<string>;
    static ɵfac: i0.ɵɵFactoryDeclaration<KeyboardService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<KeyboardService>;
}
