1  /**
 2   * Performs a
 3   * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 4   * comparison between two values to determine if they are equivalent.
 5   *
 6   * @static
 7   * @memberOf _
 8   * @since 4.0.0
 9   * @category Lang
10   * @param {*} value The value to compare.
11   * @param {*} other The other value to compare.
12   * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
13   * @example
14   *
15   * var object = { 'a': 1 };
16   * var other = { 'a': 1 };
17   *
18   * _.eq(object, object);
19   * // => true
20   *
21   * _.eq(object, other);
22   * // => false
23   *
24   * _.eq('a', 'a');
25   * // => true
26   *
27   * _.eq('a', Object('a'));
28   * // => false
29   *
30   * _.eq(NaN, NaN);
31   * // => true
32   */
33  function eq(value, other) {
34    return value === other || (value !== value && other !== other);
35  }
36  
37  module.exports = eq;