Bump to v3.1.0.

lodash.has/index.js

@@ -1,11 +1,19 @@
 /**
- * lodash 3.0.0 (Custom Build) <https://lodash.com/>
+ * lodash 3.1.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash modern modularize exports="npm" -o ./`
  * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
- * Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
  * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
+var baseGet = require('lodash._baseget'),
+    baseSlice = require('lodash._baseslice'),
+    toPath = require('lodash._topath'),
+    isArray = require('lodash.isarray');
+
+/** Used to match property names within property paths. */
+var reIsDeepProp = /\.|\[(?:[^[\]]+|(["'])(?:(?!\1)[^\n\\]|\\.)*?)\1\]/,
+    reIsPlainProp = /^\w*$/;
 
 /** Used for native method references. */
 var objectProto = Object.prototype;
@@ -14,24 +22,115 @@ var objectProto = Object.prototype;
 var hasOwnProperty = objectProto.hasOwnProperty;
 
 /**
- * Checks if `key` exists as a direct property of `object` instead of an
- * inherited property.
+ * Checks if `value` is a property name and not a property path.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @param {Object} [object] The object to query keys on.
+ * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
+ */
+function isKey(value, object) {
+  var type = typeof value;
+  if ((type == 'string' && reIsPlainProp.test(value)) || type == 'number') {
+    return true;
+  }
+  if (isArray(value)) {
+    return false;
+  }
+  var result = !reIsDeepProp.test(value);
+  return result || (object != null && value in toObject(object));
+}
+
+/**
+ * Converts `value` to an object if it is not one.
+ *
+ * @private
+ * @param {*} value The value to process.
+ * @returns {Object} Returns the object.
+ */
+function toObject(value) {
+  return isObject(value) ? value : Object(value);
+}
+
+/**
+ * Gets the last element of `array`.
+ *
+ * @static
+ * @memberOf _
+ * @category Array
+ * @param {Array} array The array to query.
+ * @returns {*} Returns the last element of `array`.
+ * @example
+ *
+ * _.last([1, 2, 3]);
+ * // => 3
+ */
+function last(array) {
+  var length = array ? array.length : 0;
+  return length ? array[length - 1] : undefined;
+}
+
+/**
+ * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
+ * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an object, else `false`.
+ * @example
+ *
+ * _.isObject({});
+ * // => true
+ *
+ * _.isObject([1, 2, 3]);
+ * // => true
+ *
+ * _.isObject(1);
+ * // => false
+ */
+function isObject(value) {
+  // Avoid a V8 JIT bug in Chrome 19-20.
+  // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
+  var type = typeof value;
+  return type == 'function' || (!!value && type == 'object');
+}
+
+/**
+ * Checks if `path` is a direct property.
  *
  * @static
  * @memberOf _
  * @category Object
- * @param {Object} object The object to inspect.
- * @param {string} key The key to check.
- * @returns {boolean} Returns `true` if `key` is a direct property, else `false`.
+ * @param {Object} object The object to query.
+ * @param {Array|string} path The path to check.
+ * @returns {boolean} Returns `true` if `path` is a direct property, else `false`.
  * @example
  *
- * var object = { 'a': 1, 'b': 2, 'c': 3 };
+ * var object = { 'a': { 'b': { 'c': 3 } } };
  *
- * _.has(object, 'b');
+ * _.has(object, 'a');
+ * // => true
+ *
+ * _.has(object, 'a.b.c');
+ * // => true
+ *
+ * _.has(object, ['a', 'b', 'c']);
  * // => true
  */
-function has(object, key) {
-  return object ? hasOwnProperty.call(object, key) : false;
+function has(object, path) {
+  if (object == null) {
+    return false;
+  }
+  var result = hasOwnProperty.call(object, path);
+  if (!result && !isKey(path)) {
+    path = toPath(path);
+    object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1));
+    path = last(path);
+    result = object != null && hasOwnProperty.call(object, path);
+  }
+  return result;
 }
 
 module.exports = has;