define([], function() {

/**

* Performs a [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)

* comparison between two values to determine if they are equivalent.

*

* @static

* @memberOf _

* @category Lang

* @param {*} value The value to compare.

* @param {*} other The other value to compare.

* @returns {boolean} Returns `true` if the values are equivalent, else `false`.

* @example

*

* var object = { 'user': 'fred' };

* var other = { 'user': 'fred' };

*

* _.eq(object, object);

* // => true

*

* _.eq(object, other);

* // => false

*

* _.eq('a', 'a');

* // => true

*

* _.eq('a', Object('a'));

* // => false

*

* _.eq(NaN, NaN);

* // => true

*/

function eq(value, other) {

return value === other || (value !== value && other !== other);

}

return eq;

});