code: function arrayLikeToArrayLike(arrayFrom, arrayTo) {
      for (var i = 0; i < arrayFrom.length; i++) {
          arrayTo[i] = arrayFrom[i];
      }
      return arrayTo;
  }
docs: Copy the data from an array-like to an other array-like.
  @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.
  @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.
  @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.