rook2pawn

// only polyfill .finished in browsers that already support animate()
if (document.body.animate) {
  
  // Chrome does not seem to expose the Animation constructor globally
  if (typeof Animation === 'undefined') {
    window.Animation = document.body.animate({}).constructor;
  }

  if (Animation.prototype.finished === undefined) {
    Object.defineProperty(Animation.prototype, 'finished', {

rook2pawn

// accepts optional transformer
// now transformers are compatible with ES6
String.prototype.template = function (fn, object) {'use strict';
  // Andrea Giammarchi - WTFPL License
  var
    hasTransformer = typeof fn === 'function',
    stringify = JSON.stringify,
    re = /\$\{([\S\s]*?)\}/g,
    strings = [],
    values = hasTransformer ? [] : strings,