/**
 * counter.ts
 *
 * @package  vrkd/src
 * @author  Fernando Salazar
 */
export declare class Counter {
    private _state;
    private _limit;
    private _start;
    /**
     * Counter constructor
     */
    constructor($limit: number, $start?: number);
    /**
     * Increase state by `$amount`
     */
    countUp($amount?: number): void;
    /**
     * Set state at start value
     */
    restart(): void;
    /**
     * Is state pass the limit
     */
    passLimit(): boolean;
    /**
     * Is state under the limit
     */
    underLimit(): boolean;
    /**
     * Is state at the limit
     */
    atLimit(): boolean;
}