import { AnyFunction } from '../../types';
/**
 * Calculates the execution time of a function in milliseconds
 *
 * @since v1.7.0
 * @category Function
 * @param {{ now: () => number }} performance - The performance object; <blockquote>For use in the browser, simply pass in <code>performance</code> which is a native object; for use in NodeJS, use <code>import { performance } from 'perf_hooks';</code></blockquote>
 * @param {number} [n=1] - The number of times to execute the function; if greater than 1, the average time is returned
 * @returns {(func: AnyFunction, ...args: any[]) => number}
 * @example
 * const addOne = x => x + 1;
 * calcPerformance(performance)(addOne, 25);
 *
 * // exec 'addOne' 100 times and return the average
 * calcPerformance(performance, 100)(addOne, 25);
 */
export declare const executionTime: (performance: {
    now: () => number;
}, n?: number) => (func: AnyFunction, ...args: any[]) => number;