threejs.interaction-fixed/src/utils/Raf.js

a interaction manager, serve the three.js, help you build a interactivity 3d-scene

(function() {
  if(typeof window==="undefined"){
    return;
  }
  let lastTime = 0;
  let vendors = ['ms', 'moz', 'webkit', 'o'];
  for (let x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
    window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
    window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] ||
            window[vendors[x] + 'CancelRequestAnimationFrame'];
  }

  if (!window.requestAnimationFrame) {
    window.requestAnimationFrame = function(callback) {
      let currTime = new Date().getTime();
      let timeToCall = Math.max(0, 16 - (currTime - lastTime));
      let id = window.setTimeout(function() {
        callback(currTime + timeToCall);
      }, timeToCall);
      lastTime = currTime + timeToCall;
      return id;
    };
  }

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

  window.RAF = window.requestAnimationFrame;
  window.CAF = window.cancelAnimationFrame;
})();