Bump to v4.3.0.

lodash.has/index.js

@@ -1,13 +1,12 @@
 /**
- * lodash 4.2.2 (Custom Build) <https://lodash.com/>
+ * lodash 4.3.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="npm" -o ./`
- * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
+ * Copyright jQuery Foundation and other contributors <https://jquery.org/>
+ * Released under MIT license <https://lodash.com/license>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
- * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
- * Available under MIT license <https://lodash.com/license>
+ * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  */
-var baseSlice = require('lodash._baseslice'),
-    toString = require('lodash.tostring');
+var stringToPath = require('lodash._stringtopath');
 
 /** Used as references for various `Number` constants. */
 var MAX_SAFE_INTEGER = 9007199254740991;
@@ -16,15 +15,12 @@ var MAX_SAFE_INTEGER = 9007199254740991;
 var argsTag = '[object Arguments]',
     funcTag = '[object Function]',
     genTag = '[object GeneratorFunction]',
-    stringTag = '[object String]';
+    stringTag = '[object String]',
+    symbolTag = '[object Symbol]';
 
 /** Used to match property names within property paths. */
 var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
-    reIsPlainProp = /^\w*$/,
-    rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]/g;
-
-/** Used to match backslashes in property paths. */
-var reEscapeChar = /\\(\\)?/g;
+    reIsPlainProp = /^\w*$/;
 
 /** Used to detect unsigned integer values. */
 var reIsUint = /^(?:0|[1-9]\d*)$/;
@@ -56,8 +52,10 @@ var hasOwnProperty = objectProto.hasOwnProperty;
 var objectToString = objectProto.toString;
 
 /** Built-in value references. */
-var getPrototypeOf = Object.getPrototypeOf,
-    propertyIsEnumerable = objectProto.propertyIsEnumerable;
+var propertyIsEnumerable = objectProto.propertyIsEnumerable;
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeGetPrototype = Object.getPrototypeOf;
 
 /**
  * Casts `value` to a path array if it's not one.
@@ -70,26 +68,6 @@ function baseCastPath(value) {
   return isArray(value) ? value : stringToPath(value);
 }
 
-/**
- * The base implementation of `_.get` without support for default values.
- *
- * @private
- * @param {Object} object The object to query.
- * @param {Array|string} path The path of the property to get.
- * @returns {*} Returns the resolved value.
- */
-function baseGet(object, path) {
-  path = isKey(path, object) ? [path + ''] : baseCastPath(path);
-
-  var index = 0,
-      length = path.length;
-
-  while (object != null && index < length) {
-    object = object[path[index++]];
-  }
-  return (index && index == length) ? object : undefined;
-}
-
 /**
  * The base implementation of `_.has` without support for deep paths.
  *
@@ -103,7 +81,7 @@ function baseHas(object, key) {
   // that are composed entirely of index properties, return `false` for
   // `hasOwnProperty` checks of them.
   return hasOwnProperty.call(object, key) ||
-    (typeof object == 'object' && key in object && getPrototypeOf(object) === null);
+    (typeof object == 'object' && key in object && getPrototype(object) === null);
 }
 
 /**
@@ -122,8 +100,9 @@ function baseProperty(key) {
 /**
  * Gets the "length" property value of `object`.
  *
- * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792)
- * that affects Safari on at least iOS 8.1-8.3 ARM64.
+ * **Note:** This function is used to avoid a
+ * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects
+ * Safari on at least iOS 8.1-8.3 ARM64.
  *
  * @private
  * @param {Object} object The object to query.
@@ -131,6 +110,17 @@ function baseProperty(key) {
  */
 var getLength = baseProperty('length');
 
+/**
+ * Gets the `[[Prototype]]` of `value`.
+ *
+ * @private
+ * @param {*} value The value to query.
+ * @returns {null|Object} Returns the `[[Prototype]]`.
+ */
+function getPrototype(value) {
+  return nativeGetPrototype(Object(value));
+}
+
 /**
  * Checks if `path` exists on `object`.
  *
@@ -147,10 +137,16 @@ function hasPath(object, path, hasFunc) {
   var result = hasFunc(object, path);
   if (!result && !isKey(path)) {
     path = baseCastPath(path);
-    object = parent(object, path);
-    if (object != null) {
-      path = last(path);
-      result = hasFunc(object, path);
+
+    var index = -1,
+        length = path.length;
+
+    while (object != null && ++index < length) {
+      var key = path[index];
+      if (!(result = hasFunc(object, key))) {
+        break;
+      }
+      object = object[key];
     }
   }
   var length = object ? object.length : undefined;
@@ -169,67 +165,25 @@ function hasPath(object, path, hasFunc) {
  * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
  */
 function isKey(value, object) {
-  if (typeof value == 'number') {
+  var type = typeof value;
+  if (type == 'number' || type == 'symbol') {
     return true;
   }
   return !isArray(value) &&
-    (reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
+    (isSymbol(value) || reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
       (object != null && value in Object(object)));
 }
 
-/**
- * Gets the parent value at `path` of `object`.
- *
- * @private
- * @param {Object} object The object to query.
- * @param {Array} path The path to get the parent value of.
- * @returns {*} Returns the parent value.
- */
-function parent(object, path) {
-  return path.length == 1 ? object : get(object, baseSlice(path, 0, -1));
-}
-
-/**
- * Converts `string` to a property path array.
- *
- * @private
- * @param {string} string The string to convert.
- * @returns {Array} Returns the property path array.
- */
-function stringToPath(string) {
-  var result = [];
-  toString(string).replace(rePropName, function(match, number, quote, string) {
-    result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
-  });
-  return result;
-}
-
-/**
- * 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 likely an `arguments` object.
  *
  * @static
  * @memberOf _
+ * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @returns {boolean} Returns `true` if `value` is correctly classified,
+ *  else `false`.
  * @example
  *
  * _.isArguments(function() { return arguments; }());
@@ -249,10 +203,12 @@ function isArguments(value) {
  *
  * @static
  * @memberOf _
+ * @since 0.1.0
  * @type {Function}
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @returns {boolean} Returns `true` if `value` is correctly classified,
+ *  else `false`.
  * @example
  *
  * _.isArray([1, 2, 3]);
@@ -276,6 +232,7 @@ var isArray = Array.isArray;
  *
  * @static
  * @memberOf _
+ * @since 4.0.0
  * @category Lang
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
@@ -303,9 +260,11 @@ function isArrayLike(value) {
  *
  * @static
  * @memberOf _
+ * @since 4.0.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is an array-like object, else `false`.
+ * @returns {boolean} Returns `true` if `value` is an array-like object,
+ *  else `false`.
  * @example
  *
  * _.isArrayLikeObject([1, 2, 3]);
@@ -329,9 +288,11 @@ function isArrayLikeObject(value) {
  *
  * @static
  * @memberOf _
+ * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @returns {boolean} Returns `true` if `value` is correctly classified,
+ *  else `false`.
  * @example
  *
  * _.isFunction(_);
@@ -351,13 +312,16 @@ function isFunction(value) {
 /**
  * Checks if `value` is a valid array-like length.
  *
- * **Note:** This function is loosely based on [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
+ * **Note:** This function is loosely based on
+ * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
  *
  * @static
  * @memberOf _
+ * @since 4.0.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
+ * @returns {boolean} Returns `true` if `value` is a valid length,
+ *  else `false`.
  * @example
  *
  * _.isLength(3);
@@ -383,6 +347,7 @@ function isLength(value) {
  *
  * @static
  * @memberOf _
+ * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is an object, else `false`.
@@ -411,6 +376,7 @@ function isObject(value) {
  *
  * @static
  * @memberOf _
+ * @since 4.0.0
  * @category Lang
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
@@ -436,10 +402,12 @@ function isObjectLike(value) {
  * Checks if `value` is classified as a `String` primitive or object.
  *
  * @static
+ * @since 0.1.0
  * @memberOf _
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @returns {boolean} Returns `true` if `value` is correctly classified,
+ *  else `false`.
  * @example
  *
  * _.isString('abc');
@@ -454,38 +422,33 @@ function isString(value) {
 }
 
 /**
- * Gets the value at `path` of `object`. If the resolved value is
- * `undefined` the `defaultValue` is used in its place.
+ * Checks if `value` is classified as a `Symbol` primitive or object.
  *
  * @static
  * @memberOf _
- * @category Object
- * @param {Object} object The object to query.
- * @param {Array|string} path The path of the property to get.
- * @param {*} [defaultValue] The value returned if the resolved value is `undefined`.
- * @returns {*} Returns the resolved value.
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is correctly classified,
+ *  else `false`.
  * @example
  *
- * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+ * _.isSymbol(Symbol.iterator);
+ * // => true
  *
- * _.get(object, 'a[0].b.c');
- * // => 3
- *
- * _.get(object, ['a', '0', 'b', 'c']);
- * // => 3
- *
- * _.get(object, 'a.b.c', 'default');
- * // => 'default'
+ * _.isSymbol('abc');
+ * // => false
  */
-function get(object, path, defaultValue) {
-  var result = object == null ? undefined : baseGet(object, path);
-  return result === undefined ? defaultValue : result;
+function isSymbol(value) {
+  return typeof value == 'symbol' ||
+    (isObjectLike(value) && objectToString.call(value) == symbolTag);
 }
 
 /**
  * Checks if `path` is a direct property of `object`.
  *
  * @static
+ * @since 0.1.0
  * @memberOf _
  * @category Object
  * @param {Object} object The object to query.