animation-frame-polyfill/lib/animation-frame-polyfill.cjs.js

Polyfill requestAnimationFrame and cancelAnimationFrame

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.cancelAnimationFrame = exports.requestAnimationFrame = void 0;
var prefix = ['webkit', 'moz', 'ms', 'o'];

var requestAnimationFrame = function () {
  for (var i = 0, limit = prefix.length; i < limit && !window.requestAnimationFrame; ++i) {
    window.requestAnimationFrame = window[prefix[i] + 'RequestAnimationFrame'];
  }

  if (!window.requestAnimationFrame) {
    var lastTime = 0;

    window.requestAnimationFrame = function (callback) {
      var now = new Date().getTime();
      var ttc = Math.max(0, 16 - now - lastTime);
      var timer = window.setTimeout(function () {
        return callback(now + ttc);
      }, ttc);
      lastTime = now + ttc;
      return timer;
    };
  }

  return window.requestAnimationFrame.bind(window);
}();

exports.requestAnimationFrame = requestAnimationFrame;

var cancelAnimationFrame = function () {
  for (var i = 0, limit = prefix.length; i < limit && !window.cancelAnimationFrame; ++i) {
    window.cancelAnimationFrame = window[prefix[i] + 'CancelAnimationFrame'] || window[prefix[i] + 'CancelRequestAnimationFrame'];
  }

  if (!window.cancelAnimationFrame) {
    window.cancelAnimationFrame = function (timer) {
      window.clearTimeout(timer);
    };
  }

  return window.cancelAnimationFrame.bind(window);
}();

exports.cancelAnimationFrame = cancelAnimationFrame;