Bump to v4.3.0.

LICENSE

@@ -1,22 +1,23 @@
+The MIT License (MIT)
+
 Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
 Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
 
-Permission is hereby granted, free of charge, to any person obtaining
+Permission is hereby granted, free of charge, to any person obtaining a copy
-a copy of this software and associated documentation files (the
+of this software and associated documentation files (the "Software"), to deal
-"Software"), to deal in the Software without restriction, including
+in the Software without restriction, including without limitation the rights
-without limitation the rights to use, copy, modify, merge, publish,
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-distribute, sublicense, and/or sell copies of the Software, and to
+copies of the Software, and to permit persons to whom the Software is
-permit persons to whom the Software is furnished to do so, subject to
+furnished to do so, subject to the following conditions:
-the following conditions:
 
-The above copyright notice and this permission notice shall be
+The above copyright notice and this permission notice shall be included in all
-included in all copies or substantial portions of the Software.
+copies or substantial portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+SOFTWARE.

README.md

@@ -1,4 +1,4 @@
-# lodash v4.1.0
+# lodash v4.3.0
 
 The [lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules.
 
@@ -28,29 +28,13 @@ var chunk = require('lodash/chunk');
 var extend = require('lodash/fp/extend');
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.1.0-npm) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.3.0-npm) for more details.
 
 **Note:**<br>
 Don’t assign values to the [special variable](http://nodejs.org/api/repl.html#repl_repl_features) `_` when in the REPL.<br>
 Install [n_](https://www.npmjs.com/package/n_) for a REPL that includes lodash by default.
 
-## Module formats
-
-Lodash is also available in a variety of other builds & module formats.
-
- * [lodash](https://www.npmjs.com/package/lodash) & [per method](https://www.npmjs.com/browse/keyword/lodash-modularized) packages
- * [lodash-amd](https://www.npmjs.com/package/lodash-amd)
- * [lodash-es](https://www.npmjs.com/package/lodash-es) & [babel-plugin-lodash](https://www.npmjs.com/package/babel-plugin-lodash)
-
-## Further Reading
-
-  * [API Documentation](https://lodash.com/docs)
-  * [Build Differences](https://github.com/lodash/lodash/wiki/Build-Differences)
-  * [Changelog](https://github.com/lodash/lodash/wiki/Changelog)
-  * [Roadmap](https://github.com/lodash/lodash/wiki/Roadmap)
-  * [More Resources](https://github.com/lodash/lodash/wiki/Resources)
-
 ## Support
 
-Tested in Chrome 46-47, Firefox 42-43, IE 9-11, Edge 13, Safari 8-9, Node.js 0.10, 0.12, 4, & 5, & PhantomJS 1.9.8.
+Tested in Chrome 47-48, Firefox 43-44, IE 9-11, Edge 13, Safari 8-9, Node.js 0.10, 0.12, 4, & 5, & PhantomJS 1.9.8.<br>
-Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available. Special thanks to [Sauce Labs](https://saucelabs.com/) for providing automated browser testing.
+Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available.

_Hash.js

@@ -1,7 +1,7 @@
 var nativeCreate = require('./_nativeCreate');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /**
  * Creates an hash object.

_Map.js

@@ -1,6 +1,7 @@
-var getNative = require('./_getNative');
+var getNative = require('./_getNative'),
+    root = require('./_root');
 
 /* Built-in method references that are verified to be native. */
-var Map = getNative(global, 'Map');
+var Map = getNative(root, 'Map');
 
 module.exports = Map;

_Reflect.js

@@ -1,4 +1,6 @@
+var root = require('./_root');
+
 /** Built-in value references. */
-var Reflect = global.Reflect;
+var Reflect = root.Reflect;
 
 module.exports = Reflect;

_Set.js

@@ -1,6 +1,7 @@
-var getNative = require('./_getNative');
+var getNative = require('./_getNative'),
+    root = require('./_root');
 
 /* Built-in method references that are verified to be native. */
-var Set = getNative(global, 'Set');
+var Set = getNative(root, 'Set');
 
 module.exports = Set;

_Symbol.js

@@ -1,4 +1,6 @@
+var root = require('./_root');
+
 /** Built-in value references. */
-var Symbol = global.Symbol;
+var Symbol = root.Symbol;
 
 module.exports = Symbol;

_Uint8Array.js

@@ -1,4 +1,6 @@
+var root = require('./_root');
+
 /** Built-in value references. */
-var Uint8Array = global.Uint8Array;
+var Uint8Array = root.Uint8Array;
 
 module.exports = Uint8Array;

_WeakMap.js

@@ -1,6 +1,7 @@
-var getNative = require('./_getNative');
+var getNative = require('./_getNative'),
+    root = require('./_root');
 
 /* Built-in method references that are verified to be native. */
-var WeakMap = getNative(global, 'WeakMap');
+var WeakMap = getNative(root, 'WeakMap');
 
 module.exports = WeakMap;

_apply.js

@@ -5,11 +5,11 @@
  * @private
  * @param {Function} func The function to invoke.
  * @param {*} thisArg The `this` binding of `func`.
- * @param {...*} [args] The arguments to invoke `func` with.
+ * @param {...*} args The arguments to invoke `func` with.
  * @returns {*} Returns the result of `func`.
  */
 function apply(func, thisArg, args) {
-  var length = args ? args.length : 0;
+  var length = args.length;
   switch (length) {
     case 0: return func.call(thisArg);
     case 1: return func.call(thisArg, args[0]);

_assignInDefaults.js

@@ -1,7 +1,7 @@
 var eq = require('./eq');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_assignValue.js

@@ -1,7 +1,7 @@
 var eq = require('./eq');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_assocDelete.js

@@ -1,7 +1,7 @@
 var assocIndexOf = require('./_assocIndexOf');
 
 /** Used for built-in method references. */
-var arrayProto = global.Array.prototype;
+var arrayProto = Array.prototype;
 
 /** Built-in value references. */
 var splice = arrayProto.splice;

_baseClone.js

@@ -3,6 +3,7 @@ var Stack = require('./_Stack'),
     assignValue = require('./_assignValue'),
     baseAssign = require('./_baseAssign'),
     baseForOwn = require('./_baseForOwn'),
+    cloneBuffer = require('./_cloneBuffer'),
     copyArray = require('./_copyArray'),
     copySymbols = require('./_copySymbols'),
     getTag = require('./_getTag'),
@@ -10,6 +11,7 @@ var Stack = require('./_Stack'),
     initCloneByTag = require('./_initCloneByTag'),
     initCloneObject = require('./_initCloneObject'),
     isArray = require('./isArray'),
+    isBuffer = require('./isBuffer'),
     isHostObject = require('./_isHostObject'),
     isObject = require('./isObject');
 
@@ -91,6 +93,9 @@ function baseClone(value, isDeep, customizer, key, object, stack) {
     var tag = getTag(value),
         isFunc = tag == funcTag || tag == genTag;
 
+    if (isBuffer(value)) {
+      return cloneBuffer(value, isDeep);
+    }
     if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
       if (isHostObject(value)) {
         return object ? value : {};

_baseDelay.js

@@ -8,7 +8,7 @@ var FUNC_ERROR_TEXT = 'Expected a function';
  * @private
  * @param {Function} func The function to delay.
  * @param {number} wait The number of milliseconds to delay invocation.
- * @param {Object} args The arguments provide to `func`.
+ * @param {Object} args The arguments to provide to `func`.
  * @returns {number} Returns the timer id.
  */
 function baseDelay(func, wait, args) {

_baseFunctions.js

@@ -3,7 +3,7 @@ var arrayFilter = require('./_arrayFilter'),
 
 /**
  * The base implementation of `_.functions` which creates an array of
- * `object` function property names filtered from those provided.
+ * `object` function property names filtered from `props`.
  *
  * @private
  * @param {Object} object The object to inspect.

_baseHas.js

@@ -1,5 +1,5 @@
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_baseIsEqualDeep.js

@@ -16,7 +16,7 @@ var argsTag = '[object Arguments]',
     objectTag = '[object Object]';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_baseKeysIn.js

@@ -2,7 +2,7 @@ var Reflect = require('./_Reflect'),
     iteratorToArray = require('./_iteratorToArray');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Built-in value references. */
 var enumerate = Reflect ? Reflect.enumerate : undefined,

_basePullAllBy.js

@@ -2,7 +2,7 @@ var arrayMap = require('./_arrayMap'),
     baseIndexOf = require('./_baseIndexOf');
 
 /** Used for built-in method references. */
-var arrayProto = global.Array.prototype;
+var arrayProto = Array.prototype;
 
 /** Built-in value references. */
 var splice = arrayProto.splice;

_basePullAt.js

@@ -5,7 +5,7 @@ var baseToPath = require('./_baseToPath'),
     parent = require('./_parent');
 
 /** Used for built-in method references. */
-var arrayProto = global.Array.prototype;
+var arrayProto = Array.prototype;
 
 /** Built-in value references. */
 var splice = arrayProto.splice;

_baseSum.js

@@ -17,7 +17,7 @@ function baseSum(array, iteratee) {
       result = result === undefined ? current : (result + current);
     }
   }
-  return length ? result : 0;
+  return result;
 }
 
 module.exports = baseSum;

_checkGlobal.js

@@ -0,0 +1,12 @@
+/**
+ * Checks if `value` is a global object.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {null|Object} Returns `value` if it's a global object, else `null`.
+ */
+function checkGlobal(value) {
+  return (value && value.Object === Object) ? value : null;
+}
+
+module.exports = checkGlobal;

_cloneArrayBuffer.js

@@ -0,0 +1,19 @@
+var Uint8Array = require('./_Uint8Array');
+
+/**
+ * Creates a clone of `arrayBuffer`.
+ *
+ * @private
+ * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
+ * @returns {ArrayBuffer} Returns the cloned array buffer.
+ */
+function cloneArrayBuffer(arrayBuffer) {
+  var Ctor = arrayBuffer.constructor,
+      result = new Ctor(arrayBuffer.byteLength),
+      view = new Uint8Array(result);
+
+  view.set(new Uint8Array(arrayBuffer));
+  return result;
+}
+
+module.exports = cloneArrayBuffer;

_cloneBuffer.js

@@ -1,18 +1,19 @@
-var Uint8Array = require('./_Uint8Array');
-
 /**
- * Creates a clone of `buffer`.
+ * Creates a clone of  `buffer`.
  *
  * @private
- * @param {ArrayBuffer} buffer The array buffer to clone.
+ * @param {Buffer} buffer The buffer to clone.
- * @returns {ArrayBuffer} Returns the cloned array buffer.
+ * @param {boolean} [isDeep] Specify a deep clone.
+ * @returns {Buffer} Returns the cloned buffer.
  */
-function cloneBuffer(buffer) {
+function cloneBuffer(buffer, isDeep) {
+  if (isDeep) {
+    return buffer.slice();
+  }
   var Ctor = buffer.constructor,
-      result = new Ctor(buffer.byteLength),
+      result = new Ctor(buffer.length);
-      view = new Uint8Array(result);
 
-  view.set(new Uint8Array(buffer));
+  buffer.copy(result);
   return result;
 }
 

_cloneTypedArray.js

@@ -1,4 +1,4 @@
-var cloneBuffer = require('./_cloneBuffer');
+var cloneArrayBuffer = require('./_cloneArrayBuffer');
 
 /**
  * Creates a clone of `typedArray`.
@@ -12,7 +12,7 @@ function cloneTypedArray(typedArray, isDeep) {
   var buffer = typedArray.buffer,
       Ctor = typedArray.constructor;
 
-  return new Ctor(isDeep ? cloneBuffer(buffer) : buffer, typedArray.byteOffset, typedArray.length);
+  return new Ctor(isDeep ? cloneArrayBuffer(buffer) : buffer, typedArray.byteOffset, typedArray.length);
 }
 
 module.exports = cloneTypedArray;

_createBaseWrapper.js

@@ -1,4 +1,5 @@
-var createCtorWrapper = require('./_createCtorWrapper');
+var createCtorWrapper = require('./_createCtorWrapper'),
+    root = require('./_root');
 
 /** Used to compose bitmasks for wrapper metadata. */
 var BIND_FLAG = 1;
@@ -18,7 +19,7 @@ function createBaseWrapper(func, bitmask, thisArg) {
       Ctor = createCtorWrapper(func);
 
   function wrapper() {
-    var fn = (this && this !== global && this instanceof wrapper) ? Ctor : func;
+    var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
     return fn.apply(isBind ? thisArg : this, arguments);
   }
   return wrapper;

_createCurryWrapper.js

@@ -2,7 +2,8 @@ var apply = require('./_apply'),
     createCtorWrapper = require('./_createCtorWrapper'),
     createHybridWrapper = require('./_createHybridWrapper'),
     createRecurryWrapper = require('./_createRecurryWrapper'),
-    replaceHolders = require('./_replaceHolders');
+    replaceHolders = require('./_replaceHolders'),
+    root = require('./_root');
 
 /**
  * Creates a function that wraps `func` to enable currying.
@@ -20,7 +21,7 @@ function createCurryWrapper(func, bitmask, arity) {
     var length = arguments.length,
         index = length,
         args = Array(length),
-        fn = (this && this !== global && this instanceof wrapper) ? Ctor : func,
+        fn = (this && this !== root && this instanceof wrapper) ? Ctor : func,
         placeholder = wrapper.placeholder;
 
     while (index--) {

_createHybridWrapper.js

@@ -3,7 +3,8 @@ var composeArgs = require('./_composeArgs'),
     createCtorWrapper = require('./_createCtorWrapper'),
     createRecurryWrapper = require('./_createRecurryWrapper'),
     reorder = require('./_reorder'),
-    replaceHolders = require('./_replaceHolders');
+    replaceHolders = require('./_replaceHolders'),
+    root = require('./_root');
 
 /** Used to compose bitmasks for wrapper metadata. */
 var BIND_FLAG = 1,
@@ -73,7 +74,7 @@ function createHybridWrapper(func, bitmask, thisArg, partials, holders, partials
     if (isAry && ary < args.length) {
       args.length = ary;
     }
-    if (this && this !== global && this instanceof wrapper) {
+    if (this && this !== root && this instanceof wrapper) {
       fn = Ctor || createCtorWrapper(fn);
     }
     return fn.apply(thisBinding, args);

_createPartialWrapper.js

@@ -1,5 +1,6 @@
 var apply = require('./_apply'),
-    createCtorWrapper = require('./_createCtorWrapper');
+    createCtorWrapper = require('./_createCtorWrapper'),
+    root = require('./_root');
 
 /** Used to compose bitmasks for wrapper metadata. */
 var BIND_FLAG = 1;
@@ -26,7 +27,7 @@ function createPartialWrapper(func, bitmask, thisArg, partials) {
         leftIndex = -1,
         leftLength = partials.length,
         args = Array(leftLength + argsLength),
-        fn = (this && this !== global && this instanceof wrapper) ? Ctor : func;
+        fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
 
     while (++leftIndex < leftLength) {
       args[leftIndex] = partials[leftIndex];

_getFuncName.js

@@ -1,7 +1,7 @@
 var realNames = require('./_realNames');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_getTag.js

@@ -1,16 +1,18 @@
 var Map = require('./_Map'),
-    Set = require('./_Set');
+    Set = require('./_Set'),
+    WeakMap = require('./_WeakMap');
 
 /** `Object#toString` result references. */
 var mapTag = '[object Map]',
     objectTag = '[object Object]',
-    setTag = '[object Set]';
+    setTag = '[object Set]',
+    weakMapTag = '[object WeakMap]';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to resolve the decompiled source of functions. */
-var funcToString = global.Function.prototype.toString;
+var funcToString = Function.prototype.toString;
 
 /**
  * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
@@ -18,9 +20,10 @@ var funcToString = global.Function.prototype.toString;
  */
 var objectToString = objectProto.toString;
 
-/** Used to detect maps and sets. */
+/** Used to detect maps, sets, and weakmaps. */
 var mapCtorString = Map ? funcToString.call(Map) : '',
-    setCtorString = Set ? funcToString.call(Set) : '';
+    setCtorString = Set ? funcToString.call(Set) : '',
+    weakMapCtorString = WeakMap ? funcToString.call(WeakMap) : '';
 
 /**
  * Gets the `toStringTag` of `value`.
@@ -33,19 +36,20 @@ function getTag(value) {
   return objectToString.call(value);
 }
 
-// Fallback for IE 11 providing `toStringTag` values for maps and sets.
+// Fallback for IE 11 providing `toStringTag` values for maps, sets, and weakmaps.
-if ((Map && getTag(new Map) != mapTag) || (Set && getTag(new Set) != setTag)) {
+if ((Map && getTag(new Map) != mapTag) ||
+    (Set && getTag(new Set) != setTag) ||
+    (WeakMap && getTag(new WeakMap) != weakMapTag)) {
   getTag = function(value) {
     var result = objectToString.call(value),
         Ctor = result == objectTag ? value.constructor : null,
         ctorString = typeof Ctor == 'function' ? funcToString.call(Ctor) : '';
 
     if (ctorString) {
-      if (ctorString == mapCtorString) {
+      switch (ctorString) {
-        return mapTag;
+        case mapCtorString: return mapTag;
-      }
+        case setCtorString: return setTag;
-      if (ctorString == setCtorString) {
+        case weakMapCtorString: return weakMapTag;
-        return setTag;
       }
     }
     return result;

_hashGet.js

@@ -4,7 +4,7 @@ var nativeCreate = require('./_nativeCreate');
 var HASH_UNDEFINED = '__lodash_hash_undefined__';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_hashHas.js

@@ -1,7 +1,7 @@
 var nativeCreate = require('./_nativeCreate');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_initCloneArray.js

@@ -1,5 +1,5 @@
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

_initCloneByTag.js

@@ -1,4 +1,4 @@
-var cloneBuffer = require('./_cloneBuffer'),
+var cloneArrayBuffer = require('./_cloneArrayBuffer'),
     cloneMap = require('./_cloneMap'),
     cloneRegExp = require('./_cloneRegExp'),
     cloneSet = require('./_cloneSet'),
@@ -42,7 +42,7 @@ function initCloneByTag(object, tag, isDeep) {
   var Ctor = object.constructor;
   switch (tag) {
     case arrayBufferTag:
-      return cloneBuffer(object);
+      return cloneArrayBuffer(object);
 
     case boolTag:
     case dateTag:

_isIterateeCall.js

@@ -4,7 +4,7 @@ var eq = require('./eq'),
     isObject = require('./isObject');
 
 /**
- * Checks if the provided arguments are from an iteratee call.
+ * Checks if the given arguments are from an iteratee call.
  *
  * @private
  * @param {*} value The potential iteratee value argument.

_isPrototype.js

@@ -1,5 +1,5 @@
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /**
  * Checks if `value` is likely a prototype object.

_root.js

@@ -0,0 +1,35 @@
+var checkGlobal = require('./_checkGlobal');
+
+/** Used to determine if values are of the language type `Object`. */
+var objectTypes = {
+  'function': true,
+  'object': true
+};
+
+/** Detect free variable `exports`. */
+var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+
+/** Detect free variable `module`. */
+var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+
+/** Detect free variable `global` from Node.js. */
+var freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global);
+
+/** Detect free variable `self`. */
+var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+
+/** Detect free variable `window`. */
+var freeWindow = checkGlobal(objectTypes[typeof window] && window);
+
+/** Detect `this` as the global object. */
+var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+
+/**
+ * Used as a reference to the global object.
+ *
+ * The `this` value is used if it's the global object to avoid Greasemonkey's
+ * restricted `window` object, otherwise the `window` object is used.
+ */
+var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')();
+
+module.exports = root;

add.js

@@ -14,6 +14,9 @@
  */
 function add(augend, addend) {
   var result;
+  if (augend === undefined && addend === undefined) {
+    return 0;
+  }
   if (augend !== undefined) {
     result = augend;
   }

array.js

@@ -12,7 +12,6 @@ module.exports = {
   'fill': require('./fill'),
   'findIndex': require('./findIndex'),
   'findLastIndex': require('./findLastIndex'),
-  'flatMap': require('./flatMap'),
   'flatten': require('./flatten'),
   'flattenDeep': require('./flattenDeep'),
   'fromPairs': require('./fromPairs'),

attempt.js

@@ -1,5 +1,5 @@
 var apply = require('./_apply'),
-    isError = require('./isError'),
+    isObject = require('./isObject'),
     rest = require('./rest');
 
 /**
@@ -13,7 +13,7 @@ var apply = require('./_apply'),
  * @returns {*} Returns the `func` result or error object.
  * @example
  *
- * // avoid throwing errors for invalid selectors
+ * // Avoid throwing errors for invalid selectors.
  * var elements = _.attempt(function(selector) {
  *   return document.querySelectorAll(selector);
  * }, '>_>');
@@ -26,7 +26,7 @@ var attempt = rest(function(func, args) {
   try {
     return apply(func, undefined, args);
   } catch (e) {
-    return isError(e) ? e : new Error(e);
+    return isObject(e) ? e : new Error(e);
   }
 });
 

bind.js

@@ -36,7 +36,7 @@ var BIND_FLAG = 1,
  * bound('!');
  * // => 'hi fred!'
  *
- * // using placeholders
+ * // Bound with placeholders.
  * var bound = _.bind(greet, object, _, '!');
  * bound('hi');
  * // => 'hi fred!'
@@ -44,10 +44,15 @@ var BIND_FLAG = 1,
 var bind = rest(function(func, thisArg, partials) {
   var bitmask = BIND_FLAG;
   if (partials.length) {
-    var holders = replaceHolders(partials, bind.placeholder);
+    var placeholder = bind.placeholder,
+        holders = replaceHolders(partials, placeholder);
+
     bitmask |= PARTIAL_FLAG;
   }
   return createWrapper(func, bitmask, thisArg, partials, holders);
 });
 
+// Assign default placeholders.
+bind.placeholder = {};
+
 module.exports = bind;

bindKey.js

@@ -46,7 +46,7 @@ var BIND_FLAG = 1,
  * bound('!');
  * // => 'hiya fred!'
  *
- * // using placeholders
+ * // Bound with placeholders.
  * var bound = _.bindKey(object, 'greet', _, '!');
  * bound('hi');
  * // => 'hiya fred!'
@@ -54,10 +54,15 @@ var BIND_FLAG = 1,
 var bindKey = rest(function(object, key, partials) {
   var bitmask = BIND_FLAG | BIND_KEY_FLAG;
   if (partials.length) {
-    var holders = replaceHolders(partials, bindKey.placeholder);
+    var placeholder = bindKey.placeholder,
+        holders = replaceHolders(partials, placeholder);
+
     bitmask |= PARTIAL_FLAG;
   }
   return createWrapper(key, bitmask, object, partials, holders);
 });
 
+// Assign default placeholders.
+bindKey.placeholder = {};
+
 module.exports = bindKey;

collection.js

@@ -7,6 +7,7 @@ module.exports = {
   'filter': require('./filter'),
   'find': require('./find'),
   'findLast': require('./findLast'),
+  'flatMap': require('./flatMap'),
   'forEach': require('./forEach'),
   'forEachRight': require('./forEachRight'),
   'groupBy': require('./groupBy'),

core.js

@@ -1,6 +1,6 @@
 /**
  * @license
- * lodash 4.1.0 (Custom Build) <https://lodash.com/>
+ * lodash 4.3.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash core -o ./dist/lodash.core.js`
  * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
@@ -13,7 +13,7 @@
   var undefined;
 
   /** Used as the semantic version number. */
-  var VERSION = '4.1.0';
+  var VERSION = '4.3.0';
 
   /** Used to compose bitmasks for wrapper metadata. */
   var BIND_FLAG = 1,
@@ -472,11 +472,11 @@
    *
    * var wrapped = _([1, 2, 3]);
    *
-   * // returns an unwrapped value
+   * // Returns an unwrapped value.
    * wrapped.reduce(_.add);
    * // => 6
    *
-   * // returns a wrapped value
+   * // Returns a wrapped value.
    * var squares = wrapped.map(square);
    *
    * _.isArray(squares);
@@ -576,7 +576,7 @@
    * @private
    * @param {Function} func The function to delay.
    * @param {number} wait The number of milliseconds to delay invocation.
-   * @param {Object} args The arguments provide to `func`.
+   * @param {Object} args The arguments to provide to `func`.
    * @returns {number} Returns the timer id.
    */
   function baseDelay(func, wait, args) {
@@ -692,7 +692,7 @@
 
   /**
    * The base implementation of `_.functions` which creates an array of
-   * `object` function property names filtered from those provided.
+   * `object` function property names filtered from `props`.
    *
    * @private
    * @param {Object} object The object to inspect.
@@ -1516,8 +1516,7 @@
    * Gets the index at which the first occurrence of `value` is found in `array`
    * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
    * for equality comparisons. If `fromIndex` is negative, it's used as the offset
-   * from the end of `array`. If `array` is sorted providing `true` for `fromIndex`
+   * from the end of `array`.
-   * performs a faster binary search.
    *
    * @static
    * @memberOf _
@@ -1531,7 +1530,7 @@
    * _.indexOf([1, 2, 1, 2], 2);
    * // => 1
    *
-   * // using `fromIndex`
+   * // Search from the `fromIndex`.
    * _.indexOf([1, 2, 1, 2], 2, 2);
    * // => 3
    */
@@ -1629,10 +1628,9 @@
   }
 
   /**
-   * This method invokes `interceptor` and returns `value`. The interceptor is
+   * This method invokes `interceptor` and returns `value`. The interceptor
-   * invoked with one argument; (value). The purpose of this method is to "tap into"
+   * is invoked with one argument; (value). The purpose of this method is to
-   * a method chain in order to perform operations on intermediate results within
+   * "tap into" a method chain in order to modify intermediate results.
-   * the chain.
    *
    * @static
    * @memberOf _
@@ -1644,6 +1642,7 @@
    *
    * _([1, 2, 3])
    *  .tap(function(array) {
+   *    // Mutate input array.
    *    array.pop();
    *  })
    *  .reverse()
@@ -1657,6 +1656,8 @@
 
   /**
    * This method is like `_.tap` except that it returns the result of `interceptor`.
+   * The purpose of this method is to "pass thru" values replacing intermediate
+   * results in a method chain.
    *
    * @static
    * @memberOf _
@@ -1693,11 +1694,11 @@
    *   { 'user': 'fred',   'age': 40 }
    * ];
    *
-   * // without explicit chaining
+   * // A sequence without explicit chaining.
    * _(users).head();
    * // => { 'user': 'barney', 'age': 36 }
    *
-   * // with explicit chaining
+   * // A sequence with explicit chaining.
    * _(users)
    *   .chain()
    *   .head()
@@ -1750,15 +1751,15 @@
    *   { 'user': 'fred',   'active': false }
    * ];
    *
-   * // using the `_.matches` iteratee shorthand
+   * // The `_.matches` iteratee shorthand.
    * _.every(users, { 'user': 'barney', 'active': false });
    * // => false
    *
-   * // using the `_.matchesProperty` iteratee shorthand
+   * // The `_.matchesProperty` iteratee shorthand.
    * _.every(users, ['active', false]);
    * // => true
    *
-   * // using the `_.property` iteratee shorthand
+   * // The `_.property` iteratee shorthand.
    * _.every(users, 'active');
    * // => false
    */
@@ -1788,15 +1789,15 @@
    * _.filter(users, function(o) { return !o.active; });
    * // => objects for ['fred']
    *
-   * // using the `_.matches` iteratee shorthand
+   * // The `_.matches` iteratee shorthand.
    * _.filter(users, { 'age': 36, 'active': true });
    * // => objects for ['barney']
    *
-   * // using the `_.matchesProperty` iteratee shorthand
+   * // The `_.matchesProperty` iteratee shorthand.
    * _.filter(users, ['active', false]);
    * // => objects for ['fred']
    *
-   * // using the `_.property` iteratee shorthand
+   * // The `_.property` iteratee shorthand.
    * _.filter(users, 'active');
    * // => objects for ['barney']
    */
@@ -1826,15 +1827,15 @@
    * _.find(users, function(o) { return o.age < 40; });
    * // => object for 'barney'
    *
-   * // using the `_.matches` iteratee shorthand
+   * // The `_.matches` iteratee shorthand.
    * _.find(users, { 'age': 1, 'active': true });
    * // => object for 'pebbles'
    *
-   * // using the `_.matchesProperty` iteratee shorthand
+   * // The `_.matchesProperty` iteratee shorthand.
    * _.find(users, ['active', false]);
    * // => object for 'fred'
    *
-   * // using the `_.property` iteratee shorthand
+   * // The `_.property` iteratee shorthand.
    * _.find(users, 'active');
    * // => object for 'barney'
    */
@@ -1911,7 +1912,7 @@
    *   { 'user': 'fred' }
    * ];
    *
-   * // using the `_.property` iteratee shorthand
+   * // The `_.property` iteratee shorthand.
    * _.map(users, 'user');
    * // => ['barney', 'fred']
    */
@@ -1923,7 +1924,7 @@
    * Reduces `collection` to a value which is the accumulated result of running
    * each element in `collection` through `iteratee`, where each successive
    * invocation is supplied the return value of the previous. If `accumulator`
-   * is not provided the first element of `collection` is used as the initial
+   * is not given the first element of `collection` is used as the initial
    * value. The iteratee is invoked with four arguments:
    * (accumulator, value, index|key, collection).
    *
@@ -2008,15 +2009,15 @@
    *   { 'user': 'fred',   'active': false }
    * ];
    *
-   * // using the `_.matches` iteratee shorthand
+   * // The `_.matches` iteratee shorthand.
    * _.some(users, { 'user': 'barney', 'active': false });
    * // => false
    *
-   * // using the `_.matchesProperty` iteratee shorthand
+   * // The `_.matchesProperty` iteratee shorthand.
    * _.some(users, ['active', false]);
    * // => true
    *
-   * // using the `_.property` iteratee shorthand
+   * // The `_.property` iteratee shorthand.
    * _.some(users, 'active');
    * // => true
    */
@@ -2134,7 +2135,7 @@
    * bound('!');
    * // => 'hi fred!'
    *
-   * // using placeholders
+   * // Bound with placeholders.
    * var bound = _.bind(greet, object, _, '!');
    * bound('hi');
    * // => 'hi fred!'
@@ -2158,7 +2159,7 @@
    * _.defer(function(text) {
    *   console.log(text);
    * }, 'deferred');
-   * // logs 'deferred' after one or more milliseconds
+   * // => logs 'deferred' after one or more milliseconds
    */
   var defer = rest(function(func, args) {
     return baseDelay(func, 1, args);
@@ -3098,7 +3099,7 @@
 
   /**
    * Creates an object that inherits from the `prototype` object. If a `properties`
-   * object is provided its own enumerable properties are assigned to the created object.
+   * object is given its own enumerable properties are assigned to the created object.
    *
    * @static
    * @memberOf _
@@ -3406,7 +3407,7 @@
   /*------------------------------------------------------------------------*/
 
   /**
-   * This method returns the first argument provided to it.
+   * This method returns the first argument given to it.
    *
    * @static
    * @memberOf _
@@ -3442,7 +3443,7 @@
    *   { 'user': 'fred',   'age': 40 }
    * ];
    *
-   * // create custom iteratee shorthands
+   * // Create custom iteratee shorthands.
    * _.iteratee = _.wrap(_.iteratee, function(callback, func) {
    *   var p = /^(\S+)\s*([<>])\s*(\S+)$/.exec(func);
    *   return !p ? callback(func) : function(object) {
@@ -3591,7 +3592,7 @@
   }
 
   /**
-   * Generates a unique ID. If `prefix` is provided the ID is appended to it.
+   * Generates a unique ID. If `prefix` is given the ID is appended to it.
    *
    * @static
    * @memberOf _

countBy.js

@@ -1,7 +1,7 @@
 var createAggregator = require('./_createAggregator');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

create.js

@@ -3,7 +3,7 @@ var baseAssign = require('./_baseAssign'),
 
 /**
  * Creates an object that inherits from the `prototype` object. If a `properties`
- * object is provided its own enumerable properties are assigned to the created object.
+ * object is given its own enumerable properties are assigned to the created object.
  *
  * @static
  * @memberOf _

curry.js

@@ -39,7 +39,7 @@ var CURRY_FLAG = 8;
  * curried(1, 2, 3);
  * // => [1, 2, 3]
  *
- * // using placeholders
+ * // Curried with placeholders.
  * curried(1)(_, 3)(2);
  * // => [1, 2, 3]
  */
@@ -50,4 +50,7 @@ function curry(func, arity, guard) {
   return result;
 }
 
+// Assign default placeholders.
+curry.placeholder = {};
+
 module.exports = curry;

curryRight.js

@@ -36,7 +36,7 @@ var CURRY_RIGHT_FLAG = 16;
  * curried(1, 2, 3);
  * // => [1, 2, 3]
  *
- * // using placeholders
+ * // Curried with placeholders.
  * curried(3)(1, _)(2);
  * // => [1, 2, 3]
  */
@@ -47,4 +47,7 @@ function curryRight(func, arity, guard) {
   return result;
 }
 
+// Assign default placeholders.
+curryRight.placeholder = {};
+
 module.exports = curryRight;

debounce.js

@@ -19,7 +19,7 @@ var nativeMax = Math.max;
  * to the debounced function return the result of the last `func` invocation.
  *
  * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
- * on the trailing edge of the timeout only if the the debounced function is
+ * on the trailing edge of the timeout only if the debounced function is
  * invoked more than once during the `wait` timeout.
  *
  * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
@@ -40,21 +40,21 @@ var nativeMax = Math.max;
  * @returns {Function} Returns the new debounced function.
  * @example
  *
- * // avoid costly calculations while the window size is in flux
+ * // Avoid costly calculations while the window size is in flux.
  * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
  *
- * // invoke `sendMail` when clicked, debouncing subsequent calls
+ * // Invoke `sendMail` when clicked, debouncing subsequent calls.
  * jQuery(element).on('click', _.debounce(sendMail, 300, {
  *   'leading': true,
  *   'trailing': false
  * }));
  *
- * // ensure `batchLog` is invoked once after 1 second of debounced calls
+ * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
  * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
  * var source = new EventSource('/stream');
  * jQuery(source).on('message', debounced);
  *
- * // cancel a trailing debounced invocation
+ * // Cancel the trailing debounced invocation.
  * jQuery(window).on('popstate', debounced.cancel);
  */
 function debounce(func, wait, options) {
@@ -135,7 +135,7 @@ function debounce(func, wait, options) {
     if (maxWait === false) {
       var leadingCall = leading && !timeoutId;
     } else {
-      if (!maxTimeoutId && !leading) {
+      if (!lastCalled && !maxTimeoutId && !leading) {
         lastCalled = stamp;
       }
       var remaining = maxWait - (stamp - lastCalled),

defer.js

@@ -16,7 +16,7 @@ var baseDelay = require('./_baseDelay'),
  * _.defer(function(text) {
  *   console.log(text);
  * }, 'deferred');
- * // logs 'deferred' after one or more milliseconds
+ * // => logs 'deferred' after one or more milliseconds
  */
 var defer = rest(function(func, args) {
   return baseDelay(func, 1, args);

difference.js

@@ -5,7 +5,7 @@ var baseDifference = require('./_baseDifference'),
 
 /**
  * Creates an array of unique `array` values not included in the other
- * provided arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+ * given arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
  * for equality comparisons.
  *
  * @static

differenceBy.js

@@ -22,7 +22,7 @@ var baseDifference = require('./_baseDifference'),
  * _.differenceBy([3.1, 2.2, 1.3], [4.4, 2.5], Math.floor);
  * // => [3.1, 1.3]
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
  * // => [{ 'x': 2 }]
  */

dropRightWhile.js

@@ -23,15 +23,15 @@ var baseIteratee = require('./_baseIteratee'),
  * _.dropRightWhile(users, function(o) { return !o.active; });
  * // => objects for ['barney']
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
  * // => objects for ['barney', 'fred']
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.dropRightWhile(users, ['active', false]);
  * // => objects for ['barney']
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.dropRightWhile(users, 'active');
  * // => objects for ['barney', 'fred', 'pebbles']
  */

dropWhile.js

@@ -23,15 +23,15 @@ var baseIteratee = require('./_baseIteratee'),
  * _.dropWhile(users, function(o) { return !o.active; });
  * // => objects for ['pebbles']
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.dropWhile(users, { 'user': 'barney', 'active': false });
  * // => objects for ['fred', 'pebbles']
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.dropWhile(users, ['active', false]);
  * // => objects for ['pebbles']
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.dropWhile(users, 'active');
  * // => objects for ['barney', 'fred', 'pebbles']
  */

every.js

@@ -26,15 +26,15 @@ var arrayEvery = require('./_arrayEvery'),
  *   { 'user': 'fred',   'active': false }
  * ];
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.every(users, { 'user': 'barney', 'active': false });
  * // => false
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.every(users, ['active', false]);
  * // => true
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.every(users, 'active');
  * // => false
  */

filter.js

@@ -24,15 +24,15 @@ var arrayFilter = require('./_arrayFilter'),
  * _.filter(users, function(o) { return !o.active; });
  * // => objects for ['fred']
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.filter(users, { 'age': 36, 'active': true });
  * // => objects for ['barney']
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.filter(users, ['active', false]);
  * // => objects for ['fred']
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.filter(users, 'active');
  * // => objects for ['barney']
  */

find.js

@@ -26,15 +26,15 @@ var baseEach = require('./_baseEach'),
  * _.find(users, function(o) { return o.age < 40; });
  * // => object for 'barney'
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.find(users, { 'age': 1, 'active': true });
  * // => object for 'pebbles'
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.find(users, ['active', false]);
  * // => object for 'fred'
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.find(users, 'active');
  * // => object for 'barney'
  */

findIndex.js

@@ -22,15 +22,15 @@ var baseFindIndex = require('./_baseFindIndex'),
  * _.findIndex(users, function(o) { return o.user == 'barney'; });
  * // => 0
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.findIndex(users, { 'user': 'fred', 'active': false });
  * // => 1
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.findIndex(users, ['active', false]);
  * // => 0
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.findIndex(users, 'active');
  * // => 2
  */

findKey.js

@@ -23,15 +23,15 @@ var baseFind = require('./_baseFind'),
  * _.findKey(users, function(o) { return o.age < 40; });
  * // => 'barney' (iteration order is not guaranteed)
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.findKey(users, { 'age': 1, 'active': true });
  * // => 'pebbles'
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.findKey(users, ['active', false]);
  * // => 'fred'
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.findKey(users, 'active');
  * // => 'barney'
  */

findLastIndex.js

@@ -22,15 +22,15 @@ var baseFindIndex = require('./_baseFindIndex'),
  * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
  * // => 2
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.findLastIndex(users, { 'user': 'barney', 'active': true });
  * // => 0
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.findLastIndex(users, ['active', false]);
  * // => 2
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.findLastIndex(users, 'active');
  * // => 0
  */

findLastKey.js

@@ -23,15 +23,15 @@ var baseFind = require('./_baseFind'),
  * _.findLastKey(users, function(o) { return o.age < 40; });
  * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
  *
- * // using the `_.matches` iteratee shorthand
+ * // The `_.matches` iteratee shorthand.
  * _.findLastKey(users, { 'age': 36, 'active': true });
  * // => 'barney'
  *
- * // using the `_.matchesProperty` iteratee shorthand
+ * // The `_.matchesProperty` iteratee shorthand.
  * _.findLastKey(users, ['active', false]);
  * // => 'fred'
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.findLastKey(users, 'active');
  * // => 'pebbles'
  */

flatMap.js

@@ -1,18 +1,17 @@
-var arrayMap = require('./_arrayMap'),
+var baseFlatten = require('./_baseFlatten'),
-    baseFlatten = require('./_baseFlatten'),
+    map = require('./map');
-    baseIteratee = require('./_baseIteratee');
 
 /**
- * Creates an array of flattened values by running each element in `array`
+ * Creates an array of flattened values by running each element in `collection`
  * through `iteratee` and concating its result to the other mapped values.
- * The iteratee is invoked with three arguments: (value, index|key, array).
+ * The iteratee is invoked with three arguments: (value, index|key, collection).
  *
  * @static
  * @memberOf _
- * @category Array
+ * @category Collection
- * @param {Array} array The array to iterate over.
+ * @param {Array|Object} collection The collection to iterate over.
  * @param {Function|Object|string} [iteratee=_.identity] The function invoked per iteration.
- * @returns {Array} Returns the new array.
+ * @returns {Array} Returns the new flattened array.
  * @example
  *
  * function duplicate(n) {
@@ -22,9 +21,8 @@ var arrayMap = require('./_arrayMap'),
  * _.flatMap([1, 2], duplicate);
  * // => [1, 1, 2, 2]
  */
-function flatMap(array, iteratee) {
+function flatMap(collection, iteratee) {
-  var length = array ? array.length : 0;
+  return baseFlatten(map(collection, iteratee));
-  return length ? baseFlatten(arrayMap(array, baseIteratee(iteratee, 3))) : [];
 }
 
 module.exports = flatMap;

flow.js

@@ -1,9 +1,9 @@
 var createFlow = require('./_createFlow');
 
 /**
- * Creates a function that returns the result of invoking the provided
+ * Creates a function that returns the result of invoking the given functions
- * functions with the `this` binding of the created function, where each
+ * with the `this` binding of the created function, where each successive
- * successive invocation is supplied the return value of the previous.
+ * invocation is supplied the return value of the previous.
  *
  * @static
  * @memberOf _

flowRight.js

@@ -2,7 +2,7 @@ var createFlow = require('./_createFlow');
 
 /**
  * This method is like `_.flow` except that it creates a function that
- * invokes the provided functions from right to left.
+ * invokes the given functions from right to left.
  *
  * @static
  * @memberOf _

fp/_baseConvert.js

@@ -9,9 +9,17 @@ var mapping = require('./_mapping'),
  * @param {Object} util The util object.
  * @param {string} name The name of the function to wrap.
  * @param {Function} func The function to wrap.
+ * @param {Object} [options] The options object.
+ * @param {boolean} [options.cap=true] Specify capping iteratee arguments.
+ * @param {boolean} [options.curry=true] Specify currying.
+ * @param {boolean} [options.fixed=true] Specify fixed arity.
+ * @param {boolean} [options.immutable=true] Specify immutable operations.
+ * @param {boolean} [options.rearg=true] Specify rearranging arguments.
  * @returns {Function|Object} Returns the converted function or object.
  */
-function baseConvert(util, name, func) {
+function baseConvert(util, name, func, options) {
+  options || (options = {});
+
   if (typeof func != 'function') {
     func = name;
     name = undefined;
@@ -19,6 +27,16 @@ function baseConvert(util, name, func) {
   if (func == null) {
     throw new TypeError;
   }
+  var config = {
+    'cap': 'cap' in options ? options.cap : true,
+    'curry': 'curry' in options ? options.curry : true,
+    'fixed': 'fixed' in options ? options.fixed : true,
+    'immutable': 'immutable' in options ? options.immutable : true,
+    'rearg': 'rearg' in options ? options.rearg : true
+  };
+
+  var forceRearg = ('rearg' in options) && options.rearg;
+
   var isLib = name === undefined && typeof func.VERSION == 'string';
 
   var _ = isLib ? func : {
@@ -29,7 +47,8 @@ function baseConvert(util, name, func) {
     'isFunction': util.isFunction,
     'iteratee': util.iteratee,
     'keys': util.keys,
-    'rearg': util.rearg
+    'rearg': util.rearg,
+    'spread': util.spread
   };
 
   var ary = _.ary,
@@ -38,7 +57,8 @@ function baseConvert(util, name, func) {
       each = _.forEach,
       isFunction = _.isFunction,
       keys = _.keys,
-      rearg = _.rearg;
+      rearg = _.rearg,
+      spread = _.spread;
 
   var baseArity = function(func, n) {
     return n == 2
@@ -105,6 +125,9 @@ function baseConvert(util, name, func) {
         var func = arguments[0],
             arity = arguments[1];
 
+        if (!config.cap) {
+          return iteratee(func, arity);
+        }
         arity = arity > 2 ? (arity - 2) : 1;
         func = iteratee(func);
         var length = func.length;
@@ -143,7 +166,7 @@ function baseConvert(util, name, func) {
     },
     'runInContext': function(runInContext) {
       return function(context) {
-        return baseConvert(util, runInContext(context));
+        return baseConvert(util, runInContext(context), undefined, options);
       };
     }
   };
@@ -154,32 +177,42 @@ function baseConvert(util, name, func) {
     if (wrapper) {
       return wrapper(func);
     }
-    if (mutateMap.array[name]) {
+    var wrapped = func;
-      func = immutWrap(func, cloneArray);
+    if (config.immutable) {
-    }
+      if (mutateMap.array[name]) {
-    else if (mutateMap.object[name]) {
+        wrapped = immutWrap(func, cloneArray);
-      func = immutWrap(func, createCloner(func));
+      }
-    }
+      else if (mutateMap.object[name]) {
-    else if (mutateMap.set[name]) {
+        wrapped = immutWrap(func, createCloner(func));
-      func = immutWrap(func, cloneDeep);
+      }
+      else if (mutateMap.set[name]) {
+        wrapped = immutWrap(func, cloneDeep);
+      }
     }
     var result;
     each(mapping.caps, function(cap) {
       each(mapping.aryMethod[cap], function(otherName) {
         if (name == otherName) {
-          var indexes = mapping.iterateeRearg[name],
+          var aryN = !isLib && mapping.iterateeAry[name],
-              n = !isLib && mapping.aryIteratee[name];
+              reargIndexes = mapping.iterateeRearg[name],
+              spreadStart = mapping.methodSpread[name];
 
-          result = ary(func, cap);
+          if (config.fixed) {
-          if (cap > 1 && !mapping.skipRearg[name]) {
+            result = spreadStart === undefined
+              ? ary(wrapped, cap)
+              : spread(wrapped, spreadStart);
+          }
+          if (config.rearg && cap > 1 && (forceRearg || !mapping.skipRearg[name])) {
             result = rearg(result, mapping.methodRearg[name] || mapping.aryRearg[cap]);
           }
-          if (indexes) {
+          if (config.cap) {
-            result = iterateeRearg(result, indexes);
+            if (reargIndexes) {
-          } else if (n) {
+              result = iterateeRearg(result, reargIndexes);
-            result = iterateeAry(result, n);
+            } else if (aryN) {
+              result = iterateeAry(result, aryN);
+            }
           }
-          if (cap > 1) {
+          if (config.curry && cap > 1) {
             result = curry(result, cap);
           }
           return false;
@@ -190,7 +223,7 @@ function baseConvert(util, name, func) {
 
     result || (result = func);
     if (mapping.placeholder[name]) {
-      result.placeholder = placeholder;
+      func.placeholder = result.placeholder = placeholder;
     }
     return result;
   };
@@ -198,11 +231,14 @@ function baseConvert(util, name, func) {
   if (!isLib) {
     return wrap(name, func);
   }
+  // Add placeholder.
+  _.placeholder = placeholder;
+
   // Iterate over methods for the current ary cap.
   var pairs = [];
   each(mapping.caps, function(cap) {
     each(mapping.aryMethod[cap], function(key) {
-      var func = _[mapping.key[key] || key];
+      var func = _[mapping.rename[key] || key];
       if (func) {
         pairs.push([key, wrap(key, func)]);
       }

fp/_convertBrowser.js

@@ -4,10 +4,11 @@ var baseConvert = require('./_baseConvert');
  * Converts `lodash` to an immutable auto-curried iteratee-first data-last version.
  *
  * @param {Function} lodash The lodash function.
+ * @param {Object} [options] The options object. See `baseConvert` for more details.
  * @returns {Function} Returns the converted `lodash`.
  */
-function browserConvert(lodash) {
+function browserConvert(lodash, options) {
-  return baseConvert(lodash, lodash);
+  return baseConvert(lodash, lodash, undefined, options);
 }
 
 module.exports = browserConvert;

fp/_mapping.js

@@ -1,11 +1,15 @@
 /** Used to map aliases to their real names. */
 exports.aliasToReal = {
+  '__': 'placeholder',
   'all': 'some',
   'allPass': 'overEvery',
   'apply': 'spread',
+  'assoc': 'set',
+  'assocPath': 'set',
   'compose': 'flowRight',
   'contains': 'includes',
-  'dissoc': 'omit',
+  'dissoc': 'unset',
+  'dissocPath': 'unset',
   'each': 'forEach',
   'eachRight': 'forEachRight',
   'equals': 'isEqual',
@@ -32,8 +36,59 @@ exports.aliasToReal = {
   'zipObj': 'zipObject'
 };
 
+/** Used to map ary to method names. */
+exports.aryMethod = {
+  1: [
+      'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
+      'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
+      'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
+      'spread', 'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
+    ],
+  2: [
+      'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
+      'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
+      'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
+      'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq', 'every',
+      'filter', 'find', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
+      'findLastKey', 'flatMap', 'forEach', 'forEachRight', 'forIn', 'forInRight',
+      'forOwn', 'forOwnRight', 'get', 'groupBy', 'gt', 'gte', 'has', 'hasIn',
+      'includes', 'indexOf', 'intersection', 'invertBy', 'invoke', 'invokeMap',
+      'isEqual', 'isMatch', 'join', 'keyBy', 'lastIndexOf', 'lt', 'lte', 'map',
+      'mapKeys', 'mapValues', 'matchesProperty', 'maxBy', 'merge', 'minBy', 'omit',
+      'omitBy', 'orderBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt',
+      'partial', 'partialRight', 'partition', 'pick', 'pickBy', 'pull', 'pullAll',
+      'pullAt', 'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove',
+      'repeat', 'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex',
+      'sortedIndexOf', 'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy',
+      'split', 'startsWith', 'subtract', 'sumBy', 'take', 'takeRight', 'takeRightWhile',
+      'takeWhile', 'tap', 'throttle', 'thru', 'times', 'trimChars', 'trimCharsEnd',
+      'trimCharsStart', 'truncate', 'union', 'uniqBy', 'uniqWith', 'unset',
+      'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject', 'zipObjectDeep'
+    ],
+  3: [
+      'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
+      'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
+      'isMatchWith', 'mergeWith', 'pullAllBy', 'reduce', 'reduceRight', 'replace',
+      'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy', 'transform', 'unionBy',
+      'unionWith', 'xorBy', 'xorWith', 'zipWith'
+    ],
+  4: [
+      'fill', 'setWith'
+    ]
+};
+
+/** Used to map ary to rearg configs. */
+exports.aryRearg = {
+  2: [1, 0],
+  3: [2, 1, 0],
+  4: [3, 2, 0, 1]
+};
+
+/** Used to iterate `mapping.aryMethod` keys. */
+exports.caps = [1, 2, 3, 4];
+
 /** Used to map method names to their iteratee ary. */
-exports.aryIteratee = {
+exports.iterateeAry = {
   'assignWith': 2,
   'assignInWith': 2,
   'cloneDeepWith': 1,
@@ -72,53 +127,6 @@ exports.aryIteratee = {
   'transform': 2
 };
 
-/** Used to map ary to method names. */
-exports.aryMethod = {
-  1: [
-      'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
-      'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
-      'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-      'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-    ],
-  2: [
-      'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
-      'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-      'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-      'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq', 'every',
-      'filter', 'find', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
-      'findLastKey', 'flatMap', 'forEach', 'forEachRight', 'forIn', 'forInRight',
-      'forOwn', 'forOwnRight', 'get', 'groupBy', 'gt', 'gte', 'has', 'hasIn',
-      'includes', 'indexOf', 'intersection', 'invertBy', 'invoke', 'invokeMap',
-      'isEqual', 'isMatch', 'join', 'keyBy', 'lastIndexOf', 'lt', 'lte', 'map',
-      'mapKeys', 'mapValues', 'matchesProperty', 'maxBy', 'merge', 'minBy', 'omit',
-      'omitBy', 'orderBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt',
-      'partition', 'pick', 'pickBy', 'pull', 'pullAll', 'pullAt', 'random', 'range',
-      'rangeRight', 'rearg', 'reject', 'remove', 'repeat', 'result', 'sampleSize',
-      'some', 'sortBy', 'sortedIndex', 'sortedIndexOf', 'sortedLastIndex',
-      'sortedLastIndexOf', 'sortedUniqBy', 'split', 'startsWith', 'subtract',
-      'sumBy', 'take', 'takeRight', 'takeRightWhile', 'takeWhile', 'tap', 'throttle',
-      'thru', 'times', 'truncate', 'union', 'uniqBy', 'uniqWith', 'unset', 'unzipWith',
-      'without', 'wrap', 'xor', 'zip', 'zipObject', 'zipObjectDeep'
-    ],
-  3: [
-      'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-      'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-      'isMatchWith', 'mergeWith', 'pullAllBy', 'reduce', 'reduceRight', 'replace',
-      'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy', 'transform', 'unionBy',
-      'unionWith', 'xorBy', 'xorWith', 'zipWith'
-    ],
-  4: [
-      'fill', 'setWith'
-    ]
-};
-
-/** Used to map ary to rearg configs. */
-exports.aryRearg = {
-  2: [1, 0],
-  3: [2, 1, 0],
-  4: [3, 2, 0, 1]
-};
-
 /** Used to map method names to iteratee rearg configs. */
 exports.iterateeRearg = {
   'findKey': [1],
@@ -140,14 +148,10 @@ exports.methodRearg = {
   'transform': [2, 0, 1]
 };
 
-/** Used to iterate `mapping.aryMethod` keys. */
+/** Used to map method names to spread configs. */
-exports.caps = [1, 2, 3, 4];
+exports.methodSpread = {
-
+  'partial': 1,
-/** Used to map keys to other keys. */
+  'partialRight': 1
-exports.key = {
-  'curryN': 'curry',
-  'curryRightN': 'curryRight',
-  'getOr': 'get'
 };
 
 /** Used to identify methods which mutate arrays or objects. */
@@ -173,7 +177,8 @@ exports.mutate = {
   },
   'set': {
     'set': true,
-    'setWith': true
+    'setWith': true,
+    'unset': true
   }
 };
 
@@ -204,17 +209,35 @@ exports.realToAlias = (function() {
   return result;
 }());
 
+/** Used to map method names to other names. */
+exports.rename = {
+  'curryN': 'curry',
+  'curryRightN': 'curryRight',
+  'getOr': 'get',
+  'trimChars': 'trim',
+  'trimCharsEnd': 'trimEnd',
+  'trimCharsStart': 'trimStart'
+};
+
 /** Used to track methods that skip `_.rearg`. */
 exports.skipRearg = {
+  'add': true,
   'assign': true,
   'assignIn': true,
   'concat': true,
   'difference': true,
+  'gt': true,
+  'gte': true,
+  'lt': true,
+  'lte': true,
   'matchesProperty': true,
   'merge': true,
+  'partial': true,
+  'partialRight': true,
   'random': true,
   'range': true,
   'rangeRight': true,
+  'subtract': true,
   'zip': true,
   'zipObject': true
 };

fp/_util.js

@@ -6,5 +6,6 @@ module.exports = {
   'isFunction': require('../isFunction'),
   'iteratee': require('../iteratee'),
   'keys': require('../_baseKeys'),
-  'rearg': require('../rearg')
+  'rearg': require('../rearg'),
+  'spread': require('../spread')
 };

fp/assoc.js

@@ -0,0 +1 @@
+module.exports = require('./set');

fp/assocPath.js

@@ -0,0 +1 @@
+module.exports = require('./set');

fp/convert.js

@@ -7,10 +7,11 @@ var baseConvert = require('./_baseConvert'),
  *
  * @param {string} name The name of the function to wrap.
  * @param {Function} [func] The function to wrap.
+ * @param {Object} [options] The options object. See `baseConvert` for more details.
  * @returns {Function|Object} Returns the converted function or object.
  */
-function convert(name, func) {
+function convert(name, func, options) {
-  return baseConvert(util, name, func);
+  return baseConvert(util, name, func, options);
 }
 
 module.exports = convert;

fp/dissoc.js

@@ -1 +1 @@
-module.exports = require('./omit');
+module.exports = require('./unset');

fp/dissocPath.js

@@ -0,0 +1 @@
+module.exports = require('./unset');

fp/isArrayBuffer.js

@@ -0,0 +1 @@
+module.exports = require('../isArrayBuffer');

fp/isBuffer.js

@@ -0,0 +1 @@
+module.exports = require('../isBuffer');

fp/isMap.js

@@ -0,0 +1 @@
+module.exports = require('../isMap');

fp/isSet.js

@@ -0,0 +1 @@
+module.exports = require('../isSet');

fp/isWeakMap.js

@@ -0,0 +1 @@
+module.exports = require('../isWeakMap');

fp/isWeakSet.js

@@ -0,0 +1 @@
+module.exports = require('../isWeakSet');

fp/partial.js

@@ -1 +1,2 @@
-module.exports = require('../partial');
+var convert = require('./convert');
+module.exports = convert('partial', require('../partial'));

fp/partialRight.js

@@ -1 +1,2 @@
-module.exports = require('../partialRight');
+var convert = require('./convert');
+module.exports = convert('partialRight', require('../partialRight'));

fp/spread.js

@@ -1 +1,2 @@
-module.exports = require('../spread');
+var convert = require('./convert');
+module.exports = convert('spread', require('../spread'));

fp/trimChars.js

@@ -0,0 +1,2 @@
+var convert = require('./convert');
+module.exports = convert('trimChars', require('../trim'));

fp/trimCharsEnd.js

@@ -0,0 +1,2 @@
+var convert = require('./convert');
+module.exports = convert('trimCharsEnd', require('../trimEnd'));

fp/trimCharsStart.js

@@ -0,0 +1,2 @@
+var convert = require('./convert');
+module.exports = convert('trimCharsStart', require('../trimStart'));

groupBy.js

@@ -1,7 +1,7 @@
 var createAggregator = require('./_createAggregator');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;
@@ -23,7 +23,7 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * _.groupBy([6.1, 4.2, 6.3], Math.floor);
  * // => { '4': [4.2], '6': [6.1, 6.3] }
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.groupBy(['one', 'two', 'three'], 'length');
  * // => { '3': ['one', 'two'], '5': ['three'] }
  */

identity.js

@@ -1,5 +1,5 @@
 /**
- * This method returns the first argument provided to it.
+ * This method returns the first argument given to it.
  *
  * @static
  * @memberOf _

indexOf.js

@@ -8,8 +8,7 @@ var nativeMax = Math.max;
  * Gets the index at which the first occurrence of `value` is found in `array`
  * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
  * for equality comparisons. If `fromIndex` is negative, it's used as the offset
- * from the end of `array`. If `array` is sorted providing `true` for `fromIndex`
+ * from the end of `array`.
- * performs a faster binary search.
  *
  * @static
  * @memberOf _
@@ -23,7 +22,7 @@ var nativeMax = Math.max;
  * _.indexOf([1, 2, 1, 2], 2);
  * // => 1
  *
- * // using `fromIndex`
+ * // Search from the `fromIndex`.
  * _.indexOf([1, 2, 1, 2], 2, 2);
  * // => 3
  */

intersection.js

@@ -4,8 +4,8 @@ var arrayMap = require('./_arrayMap'),
     toArrayLikeObject = require('./_toArrayLikeObject');
 
 /**
- * Creates an array of unique values that are included in all of the provided
+ * Creates an array of unique values that are included in all given arrays
- * arrays using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+ * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
  * for equality comparisons.
  *
  * @static

intersectionBy.js

@@ -21,7 +21,7 @@ var arrayMap = require('./_arrayMap'),
  * _.intersectionBy([2.1, 1.2], [4.3, 2.4], Math.floor);
  * // => [2.1]
  *
- * // using the `_.property` iteratee shorthand
+ * // The `_.property` iteratee shorthand.
  * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
  * // => [{ 'x': 1 }]
  */

invertBy.js

@@ -2,7 +2,7 @@ var baseIteratee = require('./_baseIteratee'),
     createInverter = require('./_createInverter');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

isArguments.js

@@ -4,7 +4,7 @@ var isArrayLikeObject = require('./isArrayLikeObject');
 var argsTag = '[object Arguments]';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

isArrayBuffer.js

@@ -0,0 +1,35 @@
+var isObjectLike = require('./isObjectLike');
+
+var arrayBufferTag = '[object ArrayBuffer]';
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/**
+ * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var objectToString = objectProto.toString;
+
+/**
+ * Checks if `value` is classified as an `ArrayBuffer` object.
+ *
+ * @static
+ * @memberOf _
+ * @type Function
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
+ * @example
+ *
+ * _.isArrayBuffer(new ArrayBuffer(2));
+ * // => true
+ *
+ * _.isArrayBuffer(new Array(2));
+ * // => false
+ */
+function isArrayBuffer(value) {
+  return isObjectLike(value) && objectToString.call(value) == arrayBufferTag;
+}
+
+module.exports = isArrayBuffer;

isBoolean.js

@@ -4,7 +4,7 @@ var isObjectLike = require('./isObjectLike');
 var boolTag = '[object Boolean]';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /**
  * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)

isBuffer.js

@@ -0,0 +1,42 @@
+var constant = require('./constant'),
+    root = require('./_root');
+
+/** Used to determine if values are of the language type `Object`. */
+var objectTypes = {
+  'function': true,
+  'object': true
+};
+
+/** Detect free variable `exports`. */
+var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
+
+/** Detect free variable `module`. */
+var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
+
+/** Detect the popular CommonJS extension `module.exports`. */
+var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
+
+/** Built-in value references. */
+var Buffer = moduleExports ? root.Buffer : undefined;
+
+/**
+ * Checks if `value` is a buffer.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
+ * @example
+ *
+ * _.isBuffer(new Buffer(2));
+ * // => true
+ *
+ * _.isBuffer(new Uint8Array(2));
+ * // => false
+ */
+var isBuffer = !Buffer ? constant(false) : function(value) {
+  return value instanceof Buffer;
+};
+
+module.exports = isBuffer;

isDate.js

@@ -4,7 +4,7 @@ var isObjectLike = require('./isObjectLike');
 var dateTag = '[object Date]';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /**
  * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)

isEmpty.js

@@ -5,7 +5,7 @@ var isArguments = require('./isArguments'),
     isString = require('./isString');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;

isError.js

@@ -4,7 +4,7 @@ var isObjectLike = require('./isObjectLike');
 var errorTag = '[object Error]';
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /**
  * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)