function arrayConcat(array, other) {
    var index = -1,
        length = array.length,
        othIndex = -1,
        othLength = other.length,
        result = Array(length + othLength);

    while (++index < length) {
      result[index] = array[index];
    }
    while (++othIndex < othLength) {
      result[index++] = other[othIndex];
    }
    return result;
  }
Creates a new array concatenating `array` with `other`.

@private
@param {Array} array The first array to concatenate.
@param {Array} other The second array to concatenate.
@returns {Array} Returns the new concatenated array.