Bump to v4.0.0.

internal/baseXor.js

@@ -0,0 +1,29 @@
+define(['./arrayPush', './baseDifference', './baseUniq'], function(arrayPush, baseDifference, baseUniq) {
+
+  /**
+   * The base implementation of methods like `_.xor`, without support for
+   * iteratee shorthands, that accepts an array of arrays to inspect.
+   *
+   * @private
+   * @param {Array} arrays The arrays to inspect.
+   * @param {Function} [iteratee] The iteratee invoked per element.
+   * @param {Function} [comparator] The comparator invoked per element.
+   * @returns {Array} Returns the new array of values.
+   */
+  function baseXor(arrays, iteratee, comparator) {
+    var index = -1,
+        length = arrays.length;
+
+    while (++index < length) {
+      var result = result
+        ? arrayPush(
+            baseDifference(result, arrays[index], iteratee, comparator),
+            baseDifference(arrays[index], result, iteratee, comparator)
+          )
+        : arrays[index];
+    }
+    return (result && result.length) ? baseUniq(result, iteratee, comparator) : [];
+  }
+
+  return baseXor;
+});