preact-arco-design/es/_util/raf.js

Arco Design React UI Library.

var target = typeof window === 'undefined' ? global : window;
var vendors = ['webkit', 'ms', 'moz', 'o'];
var raf = target.requestAnimationFrame; // eslint-disable-line

var caf = target.cancelAnimationFrame; // eslint-disable-line

if (!raf || !caf) {
  vendors.some(function (prefix) {
    raf = target["".concat(prefix, "RequestAnimationFrame")];
    caf = target["".concat(prefix, "CancelAnimationFrame")] || target["".concat(prefix, "CancelRequestAnimationFrame")];
    return raf && caf;
  });

  if (!raf || !caf) {
    var lastTime_1 = 0;

    raf = function raf(cb) {
      var currentTime = Date.now();
      var diff = Math.max(0, 16 - (currentTime - lastTime_1));
      var timer = setTimeout(function () {
        cb();
        lastTime_1 = currentTime + diff;
      }, diff);
      return timer;
    };

    caf = function caf(timer) {
      clearTimeout(timer);
    };
  }
}

raf = raf.bind(target);
caf = caf.bind(target);
export { raf, caf };