Bump to v4.12.0.

_cacheHas.js

@@ -1,25 +1,15 @@
-define(['./_isKeyable'], function(isKeyable) {
-
-  /** Used to stand-in for `undefined` hash values. */
-  var HASH_UNDEFINED = '__lodash_hash_undefined__';
+define([], function() {
 
   /**
-   * Checks if `value` is in `cache`.
+   * Checks if a cache value for `key` exists.
    *
    * @private
-   * @param {Object} cache The set cache to search.
-   * @param {*} value The value to search for.
-   * @returns {number} Returns `true` if `value` is found, else `false`.
+   * @param {Object} cache The cache to query.
+   * @param {string} key The key of the entry to check.
+   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
    */
-  function cacheHas(cache, value) {
-    var map = cache.__data__;
-    if (isKeyable(value)) {
-      var data = map.__data__,
-          hash = typeof value == 'string' ? data.string : data.hash;
-
-      return hash[value] === HASH_UNDEFINED;
-    }
-    return map.has(value);
+  function cacheHas(cache, key) {
+    return cache.has(key);
   }
 
   return cacheHas;