Bump to v4.0.0.

max.js

@@ -0,0 +1,30 @@
+define(['./internal/baseExtremum', './gt', './identity'], function(baseExtremum, gt, identity) {
+
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
+  /**
+   * Computes the maximum value of `array`. If `array` is empty or falsey
+   * `undefined` is returned.
+   *
+   * @static
+   * @memberOf _
+   * @category Math
+   * @param {Array} array The array to iterate over.
+   * @returns {*} Returns the maximum value.
+   * @example
+   *
+   * _.max([4, 2, 8, 6]);
+   * // => 8
+   *
+   * _.max([]);
+   * // => undefined
+   */
+  function max(array) {
+    return (array && array.length)
+      ? baseExtremum(array, identity, gt)
+      : undefined;
+  }
+
+  return max;
+});