import { ChangeDetectorRef, OnDestroy, PipeTransform } from '@angular/core';
import { TimeDiffGenerator } from './time-diff';
import { UpdateIntervalGenerator } from './time-interval';
import { TAInput } from './time-past';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class TimePastPipe implements PipeTransform, OnDestroy {
    private readonly changeDetectorRef;
    private readonly ticker;
    private readonly timeDiffGenerator;
    private readonly updateIntervalGenerator;
    private initialSeconds;
    private lastInput;
    private lastSeconds;
    private lastResult;
    private currentPeriod;
    private readonly intervalTimer;
    private readonly intervalSubscription;
    /**
     * TimePastPipe Class Constructor
     */
    constructor(changeDetectorRef: ChangeDetectorRef, ticker: Observable<number>, timeDiffGenerator: TimeDiffGenerator, updateIntervalGenerator: UpdateIntervalGenerator);
    /**
     * Transform anything that can be parsed to a Date in the past, to a string that represent the relative
     *  time that has been passed between now and this point of time.
     *
     * @param value A value that can be parsed to a Date in the past or future
     * @param overflow Overflow to time in past when initial date was in future
     * @return The textual representation of the time that has been passed between the given Date
     *  and the current.
     */
    transform<T extends TAInput>(value: T, overflow?: boolean): string | T;
    /**
     * Validate the Input Value and log a warning per value when it fails
     *
     * @param value
     * @private
     */
    private isValidInput;
    /**
     * Clear interval ticker subscription
     */
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TimePastPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<TimePastPipe, "timePast", true>;
}
/**
 * @deprecated Use TimePastPipe instead
 */
export declare const NgTimePastPipePipe: typeof TimePastPipe;