1  var isArray = require('./isArray');
 2  
 3  /**
 4   * Casts `value` as an array if it's not one.
 5   *
 6   * @static
 7   * @memberOf _
 8   * @since 4.4.0
 9   * @category Lang
10   * @param {*} value The value to inspect.
11   * @returns {Array} Returns the cast array.
12   * @example
13   *
14   * _.castArray(1);
15   * // => [1]
16   *
17   * _.castArray({ 'a': 1 });
18   * // => [{ 'a': 1 }]
19   *
20   * _.castArray('abc');
21   * // => ['abc']
22   *
23   * _.castArray(null);
24   * // => [null]
25   *
26   * _.castArray(undefined);
27   * // => [undefined]
28   *
29   * _.castArray();
30   * // => []
31   *
32   * var array = [1, 2, 3];
33   * console.log(_.castArray(array) === array);
34   * // => true
35   */
36  function castArray() {
37    if (!arguments.length) {
38      return [];
39    }
40    var value = arguments[0];
41    return isArray(value) ? value : [value];
42  }
43  
44  module.exports = castArray;