index.js

/**
 * @author Behnam Mohammadi
 */
'use strict';

exports.__esModule = true;

const getCurrentTime =
  typeof performance === 'object' && typeof performance.now === 'function'
    ? () => performance.now()
    : () => Date.now();

/**
 * @description throttle
 * @public
 * @version 1.0.5
 * @param {function} func
 * @param {number} delay
 * @returns {function} throttled function
 */
exports.throttle = function throttle(func, delay) {
  var nextAllowed = 0;
  return function () {
    var now = getCurrentTime();
    if (now < nextAllowed) return;
    nextAllowed = now + delay;
    func.apply(this, arguments);
  };
};

/**
 * @description debounce
 * @public
 * @version 1.0.5
 * @param {function} func
 * @param {number} delay
 * @returns {function} debounced function
 */
exports.debounce = function debounce(func, delay) {
  let timeoutId = null;
  return function () {
    clearTimeout(timeoutId);
    var args = arguments;
    var selfThis = this;
    timeoutId = setTimeout(function () {
      func.apply(selfThis, args);
    }, delay);
  };
};

/**
 * @description delay
 * @public
 * @version 1.1.0
 * @param {number} time
 * @return {object} promise
 */
exports.delay = function (time) {
  return new Promise(function (done) {
    setTimeout(done, time);
  });
};