/// <reference types="node" />
import { NumberInput } from '@angular/cdk/coercion';
import { EventEmitter, OnChanges, SimpleChanges } from '@angular/core';
import * as i0 from "@angular/core";
export declare class MtnaCounterDirective implements OnChanges {
    static ngAcceptInputType_interval: NumberInput;
    static ngAcceptInputType_increment: NumberInput;
    static ngAcceptInputType_duration: NumberInput;
    static ngAcceptInputType_countTo: NumberInput;
    static ngAcceptInputType_countFrom: NumberInput;
    /** the count value to start */
    get countFrom(): number;
    set countFrom(countFrom: number);
    private _countFrom;
    /** the count value to reach */
    get countTo(): number;
    set countTo(countTo: number);
    private _countTo;
    /** The amount of time to run the counter, overrides the interval & increment */
    get duration(): number | null;
    set duration(duration: number | null);
    private _duration;
    /** The value by which to increment the count */
    get increment(): number;
    set increment(inc: number);
    private _increment;
    /** How often to emit the count & increment */
    get interval(): number;
    set interval(int: number);
    private _interval;
    /** the count after each interval */
    count: EventEmitter<number>;
    timer?: NodeJS.Timeout;
    private isIncrease;
    ngOnChanges(changes: SimpleChanges): void;
    private run;
    /**
     * Changes the count value, whether increasing or decreasing
     */
    private changeValue;
    /**
     * Determines if the counter has reached the countTo value.
     */
    private isComplete;
    /**
     * Uses the duration to set the interval/increment values, then calls runInterval().
     * If user provides interval/increment, it will override the calculated value;
     * A provided increment will override a provided interval.
     */
    private runDuration;
    /**
     * Sets a timer and after each interval, emits the counter then increments it.
     */
    private runInterval;
    static ɵfac: i0.ɵɵFactoryDeclaration<MtnaCounterDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<MtnaCounterDirective, "[mtnaCounter]", never, { "countFrom": "countFrom"; "countTo": "countTo"; "duration": "duration"; "increment": "increment"; "interval": "interval"; }, { "count": "count"; }, never>;
}