Bump to v4.0.0.

internal/baseIteratee.js

@@ -0,0 +1,27 @@
+define(['./baseMatches', './baseMatchesProperty', '../identity', '../isArray', '../property'], function(baseMatches, baseMatchesProperty, identity, isArray, property) {
+
+  /**
+   * The base implementation of `_.iteratee`.
+   *
+   * @private
+   * @param {*} [value=_.identity] The value to convert to an iteratee.
+   * @returns {Function} Returns the iteratee.
+   */
+  function baseIteratee(value) {
+    var type = typeof value;
+    if (type == 'function') {
+      return value;
+    }
+    if (value == null) {
+      return identity;
+    }
+    if (type == 'object') {
+      return isArray(value)
+        ? baseMatchesProperty(value[0], value[1])
+        : baseMatches(value);
+    }
+    return property(value);
+  }
+
+  return baseIteratee;
+});