var arrayConcat = require('../internal/arrayConcat'),
      baseFlatten = require('../internal/baseFlatten'),
      isArray = require('../lang/isArray'),
      restParam = require('../function/restParam'),
      toObject = require('../internal/toObject');
  
  /**
   * Creates a new array joining a wrapped array with any additional arrays
   * and/or values.
   *
   * @name concat
   * @memberOf _
   * @category Chain
   * @param {...*} [values] The values to concatenate.
   * @returns {Array} Returns the new concatenated array.
   * @example
   *
   * var array = [1];
   * var wrapped = _(array).concat(2, [3], [[4]]);
   *
   * console.log(wrapped.value());
   * // => [1, 2, 3, [4]]
   *
   * console.log(array);
   * // => [1]
   */
  var wrapperConcat = restParam(function(values) {
    values = baseFlatten(values);
    return this.thru(function(array) {
      return arrayConcat(isArray(array) ? array : [toObject(array)], values);
    });
  });
  
  module.exports = wrapperConcat;