/**
 * Executes a function once after a delay.
 */
export class AfterTimer extends TimerBase {
    /**
     * @param {string|number} duration - Delay before firing (e.g., '1s', 300)
     * @param {Function} fn - Main function to execute
     * @param {Function} [onFinish] - Optional callback when done
     */
    constructor(duration: string | number, fn: Function, onFinish?: Function);
}
import { TimerBase } from './TimerBase.js';