code: function slice() {
    for (var
      o = +this,                // offset
      i = o,                    // start index
      l = arguments.length,     // length
      n = l - o,                // new length
      a = Array(n < 0 ? 0 : n); // new Array
      i < l; i++
    ) a[i - o] = arguments[i];
    return a;
  }
docs: https://gist.github.com/WebReflection/4327762cb87a8c634a29