import { PipeTransform } from "@angular/core";
import * as i0 from "@angular/core";
export declare class DurationPipe implements PipeTransform {
    transform(seconds: number | null): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<DurationPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<DurationPipe, "duration", true>;
}