Bump to v4.5.1.

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

README.md

@@ -1,56 +1,40 @@
-# lodash v4.0.0
+# lodash v4.5.1
 
 The [lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules.
 
-Generated using [lodash-cli](https://www.npmjs.com/package/lodash-cli):
-```bash
-$ lodash modularize exports=node -o ./
-$ lodash -d -o ./lodash.js
-```
-
 ## Installation
 
 Using npm:
-
 ```bash
 $ {sudo -H} npm i -g npm
 $ npm i --save lodash
 ```
 
 In Node.js:
-
 ```js
-// load the modern build
+// Load the full build.
 var _ = require('lodash');
-// or a method category
+// Load the core build.
+var _ = require('lodash/core');
+// Load the fp build for immutable auto-curried iteratee-first data-last methods.
+var _ = require('lodash/fp');
+
+// Load a method category.
 var array = require('lodash/array');
-// or a method (great for smaller builds with browserify/webpack)
+var object = require('lodash/fp/object');
+
+// Load a single method for smaller builds with browserify/rollup/webpack.
 var chunk = require('lodash/chunk');
+var extend = require('lodash/fp/extend');
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.0.0-npm) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.5.1-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)
-
-## 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.x, 0.12.x, 4.x, & 5.x, &amp; PhantomJS 1.9.8.
-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.
+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.

_Hash.js

@@ -1,12 +1,13 @@
-var nativeCreate = require('./nativeCreate');
+var nativeCreate = require('./_nativeCreate');
 
 /** Used for built-in method references. */
-var objectProto = global.Object.prototype;
+var objectProto = Object.prototype;
 
 /**
  * Creates an hash object.
  *
  * @private
+ * @constructor
  * @returns {Object} Returns the new hash object.
  */
 function Hash() {}

_LazyWrapper.js

@@ -1,5 +1,5 @@
-var baseCreate = require('./baseCreate'),
-    baseLodash = require('./baseLodash');
+var baseCreate = require('./_baseCreate'),
+    baseLodash = require('./_baseLodash');
 
 /** Used as references for the maximum length and index of an array. */
 var MAX_ARRAY_LENGTH = 4294967295;
@@ -8,6 +8,7 @@ var MAX_ARRAY_LENGTH = 4294967295;
  * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
  *
  * @private
+ * @constructor
  * @param {*} value The value to wrap.
  */
 function LazyWrapper(value) {

_LodashWrapper.js

@@ -1,5 +1,5 @@
-var baseCreate = require('./baseCreate'),
-    baseLodash = require('./baseLodash');
+var baseCreate = require('./_baseCreate'),
+    baseLodash = require('./_baseLodash');
 
 /**
  * The base constructor for creating `lodash` wrapper objects.

_Map.js

@@ -0,0 +1,7 @@
+var getNative = require('./_getNative'),
+    root = require('./_root');
+
+/* Built-in method references that are verified to be native. */
+var Map = getNative(root, 'Map');
+
+module.exports = Map;

_MapCache.js

@@ -1,13 +1,14 @@
-var mapClear = require('./mapClear'),
-    mapDelete = require('./mapDelete'),
-    mapGet = require('./mapGet'),
-    mapHas = require('./mapHas'),
-    mapSet = require('./mapSet');
+var mapClear = require('./_mapClear'),
+    mapDelete = require('./_mapDelete'),
+    mapGet = require('./_mapGet'),
+    mapHas = require('./_mapHas'),
+    mapSet = require('./_mapSet');
 
 /**
  * Creates a map cache object to store key-value pairs.
  *
  * @private
+ * @constructor
  * @param {Array} [values] The values to cache.
  */
 function MapCache(values) {

_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

@@ -0,0 +1,7 @@
+var getNative = require('./_getNative'),
+    root = require('./_root');
+
+/* Built-in method references that are verified to be native. */
+var Set = getNative(root, 'Set');
+
+module.exports = Set;

_SetCache.js

@@ -1,11 +1,12 @@
-var MapCache = require('./MapCache'),
-    cachePush = require('./cachePush');
+var MapCache = require('./_MapCache'),
+    cachePush = require('./_cachePush');
 
 /**
  *
  * Creates a set cache object to store unique values.
  *
  * @private
+ * @constructor
  * @param {Array} [values] The values to cache.
  */
 function SetCache(values) {

_Stack.js

@@ -1,13 +1,14 @@
-var stackClear = require('./stackClear'),
-    stackDelete = require('./stackDelete'),
-    stackGet = require('./stackGet'),
-    stackHas = require('./stackHas'),
-    stackSet = require('./stackSet');
+var stackClear = require('./_stackClear'),
+    stackDelete = require('./_stackDelete'),
+    stackGet = require('./_stackGet'),
+    stackHas = require('./_stackHas'),
+    stackSet = require('./_stackSet');
 
 /**
  * Creates a stack cache object to store key-value pairs.
  *
  * @private
+ * @constructor
  * @param {Array} [values] The values to cache.
  */
 function Stack(values) {

_Symbol.js

@@ -0,0 +1,6 @@
+var root = require('./_root');
+
+/** Built-in value references. */
+var Symbol = root.Symbol;
+
+module.exports = Symbol;

_Uint8Array.js

@@ -0,0 +1,6 @@
+var root = require('./_root');
+
+/** Built-in value references. */
+var Uint8Array = root.Uint8Array;
+
+module.exports = Uint8Array;

_WeakMap.js

@@ -0,0 +1,7 @@
+var getNative = require('./_getNative'),
+    root = require('./_root');
+
+/* Built-in method references that are verified to be native. */
+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]);

_arrayAggregator.js

@@ -0,0 +1,22 @@
+/**
+ * A specialized version of `baseAggregator` for arrays.
+ *
+ * @private
+ * @param {Array} array The array to iterate over.
+ * @param {Function} setter The function to set `accumulator` values.
+ * @param {Function} iteratee The iteratee to transform keys.
+ * @param {Object} accumulator The initial aggregated object.
+ * @returns {Function} Returns `accumulator`.
+ */
+function arrayAggregator(array, setter, iteratee, accumulator) {
+  var index = -1,
+      length = array.length;
+
+  while (++index < length) {
+    var value = array[index];
+    setter(accumulator, value, iteratee(value), array);
+  }
+  return accumulator;
+}
+
+module.exports = arrayAggregator;

_arrayIncludes.js

@@ -1,4 +1,4 @@
-var baseIndexOf = require('./baseIndexOf');
+var baseIndexOf = require('./_baseIndexOf');
 
 /**
  * A specialized version of `_.includes` for arrays without support for

_arrayReduce.js

@@ -6,14 +6,14 @@
  * @param {Array} array The array to iterate over.
  * @param {Function} iteratee The function invoked per iteration.
  * @param {*} [accumulator] The initial value.
- * @param {boolean} [initFromArray] Specify using the first element of `array` as the initial value.
+ * @param {boolean} [initAccum] Specify using the first element of `array` as the initial value.
  * @returns {*} Returns the accumulated value.
  */
-function arrayReduce(array, iteratee, accumulator, initFromArray) {
+function arrayReduce(array, iteratee, accumulator, initAccum) {
   var index = -1,
       length = array.length;
 
-  if (initFromArray && length) {
+  if (initAccum && length) {
     accumulator = array[++index];
   }
   while (++index < length) {

_arrayReduceRight.js

@@ -6,12 +6,12 @@
  * @param {Array} array The array to iterate over.
  * @param {Function} iteratee The function invoked per iteration.
  * @param {*} [accumulator] The initial value.
- * @param {boolean} [initFromArray] Specify using the last element of `array` as the initial value.
+ * @param {boolean} [initAccum] Specify using the last element of `array` as the initial value.
  * @returns {*} Returns the accumulated value.
  */
-function arrayReduceRight(array, iteratee, accumulator, initFromArray) {
+function arrayReduceRight(array, iteratee, accumulator, initAccum) {
   var length = array.length;
-  if (initFromArray && length) {
+  if (initAccum && length) {
     accumulator = array[--length];
   }
   while (length--) {

_assignInDefaults.js

@@ -1,7 +1,7 @@
-var eq = require('../eq');
+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;

_assignMergeValue.js

@@ -1,4 +1,4 @@
-var eq = require('../eq');
+var eq = require('./eq');
 
 /**
  * This function is like `assignValue` except that it doesn't assign `undefined` values.

_assignValue.js

@@ -1,7 +1,7 @@
-var eq = require('../eq');
+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;
@@ -18,8 +18,7 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  */
 function assignValue(object, key, value) {
   var objValue = object[key];
-  if ((!eq(objValue, value) ||
-        (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) ||
+  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
       (value === undefined && !(key in object))) {
     object[key] = value;
   }

_assocDelete.js

@@ -1,7 +1,7 @@
-var assocIndexOf = require('./assocIndexOf');
+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;

_assocGet.js

@@ -1,4 +1,4 @@
-var assocIndexOf = require('./assocIndexOf');
+var assocIndexOf = require('./_assocIndexOf');
 
 /**
  * Gets the associative array value for `key`.

_assocHas.js

@@ -1,4 +1,4 @@
-var assocIndexOf = require('./assocIndexOf');
+var assocIndexOf = require('./_assocIndexOf');
 
 /**
  * Checks if an associative array value for `key` exists.

_assocIndexOf.js

@@ -1,4 +1,4 @@
-var eq = require('../eq');
+var eq = require('./eq');
 
 /**
  * Gets the index at which the first occurrence of `key` is found in `array`

_assocSet.js

@@ -1,4 +1,4 @@
-var assocIndexOf = require('./assocIndexOf');
+var assocIndexOf = require('./_assocIndexOf');
 
 /**
  * Sets the associative array `key` to `value`.

_baseAggregator.js

@@ -0,0 +1,21 @@
+var baseEach = require('./_baseEach');
+
+/**
+ * Aggregates elements of `collection` on `accumulator` with keys transformed
+ * by `iteratee` and values set by `setter`.
+ *
+ * @private
+ * @param {Array|Object} collection The collection to iterate over.
+ * @param {Function} setter The function to set `accumulator` values.
+ * @param {Function} iteratee The iteratee to transform keys.
+ * @param {Object} accumulator The initial aggregated object.
+ * @returns {Function} Returns `accumulator`.
+ */
+function baseAggregator(collection, setter, iteratee, accumulator) {
+  baseEach(collection, function(value, key, collection) {
+    setter(accumulator, value, iteratee(value), collection);
+  });
+  return accumulator;
+}
+
+module.exports = baseAggregator;

_baseAssign.js

@@ -1,5 +1,5 @@
-var copyObject = require('./copyObject'),
-    keys = require('../keys');
+var copyObject = require('./_copyObject'),
+    keys = require('./keys');
 
 /**
  * The base implementation of `_.assign` without support for multiple sources

_baseAt.js

@@ -1,4 +1,4 @@
-var get = require('../get');
+var get = require('./get');
 
 /**
  * The base implementation of `_.at` without support for individual paths.

_baseCastArrayLikeObject.js

@@ -0,0 +1,14 @@
+var isArrayLikeObject = require('./isArrayLikeObject');
+
+/**
+ * Casts `value` to an empty array if it's not an array like object.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @returns {Array} Returns the array-like object.
+ */
+function baseCastArrayLikeObject(value) {
+  return isArrayLikeObject(value) ? value : [];
+}
+
+module.exports = baseCastArrayLikeObject;

_baseCastFunction.js

@@ -0,0 +1,14 @@
+var identity = require('./identity');
+
+/**
+ * Casts `value` to `identity` if it's not a function.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @returns {Array} Returns the array-like object.
+ */
+function baseCastFunction(value) {
+  return typeof value == 'function' ? value : identity;
+}
+
+module.exports = baseCastFunction;

_baseCastPath.js

@@ -0,0 +1,15 @@
+var isArray = require('./isArray'),
+    stringToPath = require('./_stringToPath');
+
+/**
+ * Casts `value` to a path array if it's not one.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @returns {Array} Returns the cast property path array.
+ */
+function baseCastPath(value) {
+  return isArray(value) ? value : stringToPath(value);
+}
+
+module.exports = baseCastPath;

_baseClone.js

@@ -1,17 +1,19 @@
-var Stack = require('./Stack'),
-    arrayEach = require('./arrayEach'),
-    assignValue = require('./assignValue'),
-    baseAssign = require('./baseAssign'),
-    baseForOwn = require('./baseForOwn'),
-    copyArray = require('./copyArray'),
-    copySymbols = require('./copySymbols'),
-    getTag = require('./getTag'),
-    initCloneArray = require('./initCloneArray'),
-    initCloneByTag = require('./initCloneByTag'),
-    initCloneObject = require('./initCloneObject'),
-    isArray = require('../isArray'),
-    isHostObject = require('./isHostObject'),
-    isObject = require('../isObject');
+var Stack = require('./_Stack'),
+    arrayEach = require('./_arrayEach'),
+    assignValue = require('./_assignValue'),
+    baseAssign = require('./_baseAssign'),
+    baseForOwn = require('./_baseForOwn'),
+    cloneBuffer = require('./_cloneBuffer'),
+    copyArray = require('./_copyArray'),
+    copySymbols = require('./_copySymbols'),
+    getTag = require('./_getTag'),
+    initCloneArray = require('./_initCloneArray'),
+    initCloneByTag = require('./_initCloneByTag'),
+    initCloneObject = require('./_initCloneObject'),
+    isArray = require('./isArray'),
+    isBuffer = require('./isBuffer'),
+    isHostObject = require('./_isHostObject'),
+    isObject = require('./isObject');
 
 /** `Object#toString` result references. */
 var argsTag = '[object Arguments]',
@@ -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 : {};
@@ -100,9 +105,10 @@ function baseClone(value, isDeep, customizer, key, object, stack) {
         return copySymbols(value, baseAssign(result, value));
       }
     } else {
-      return cloneableTags[tag]
-        ? initCloneByTag(value, tag, isDeep)
-        : (object ? value : {});
+      if (!cloneableTags[tag]) {
+        return object ? value : {};
+      }
+      result = initCloneByTag(value, tag, isDeep);
     }
   }
   // Check for circular references and return its corresponding clone.

_baseConforms.js

@@ -1,4 +1,4 @@
-var keys = require('../keys');
+var keys = require('./keys');
 
 /**
  * The base implementation of `_.conforms` which doesn't clone `source`.

_baseCreate.js

@@ -0,0 +1,18 @@
+var isObject = require('./isObject');
+
+/** Built-in value references. */
+var objectCreate = Object.create;
+
+/**
+ * The base implementation of `_.create` without support for assigning
+ * properties to the created object.
+ *
+ * @private
+ * @param {Object} prototype The object to inherit from.
+ * @returns {Object} Returns the new object.
+ */
+function baseCreate(proto) {
+  return isObject(proto) ? objectCreate(proto) : {};
+}
+
+module.exports = baseCreate;

_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) {

_baseDifference.js

@@ -1,9 +1,9 @@
-var SetCache = require('./SetCache'),
-    arrayIncludes = require('./arrayIncludes'),
-    arrayIncludesWith = require('./arrayIncludesWith'),
-    arrayMap = require('./arrayMap'),
-    baseUnary = require('./baseUnary'),
-    cacheHas = require('./cacheHas');
+var SetCache = require('./_SetCache'),
+    arrayIncludes = require('./_arrayIncludes'),
+    arrayIncludesWith = require('./_arrayIncludesWith'),
+    arrayMap = require('./_arrayMap'),
+    baseUnary = require('./_baseUnary'),
+    cacheHas = require('./_cacheHas');
 
 /** Used as the size to enable large array optimizations. */
 var LARGE_ARRAY_SIZE = 200;

_baseEach.js

@@ -1,5 +1,5 @@
-var baseForOwn = require('./baseForOwn'),
-    createBaseEach = require('./createBaseEach');
+var baseForOwn = require('./_baseForOwn'),
+    createBaseEach = require('./_createBaseEach');
 
 /**
  * The base implementation of `_.forEach` without support for iteratee shorthands.

_baseEachRight.js

@@ -1,5 +1,5 @@
-var baseForOwnRight = require('./baseForOwnRight'),
-    createBaseEach = require('./createBaseEach');
+var baseForOwnRight = require('./_baseForOwnRight'),
+    createBaseEach = require('./_createBaseEach');
 
 /**
  * The base implementation of `_.forEachRight` without support for iteratee shorthands.

_baseEvery.js

@@ -1,4 +1,4 @@
-var baseEach = require('./baseEach');
+var baseEach = require('./_baseEach');
 
 /**
  * The base implementation of `_.every` without support for iteratee shorthands.

_baseFill.js

@@ -1,5 +1,5 @@
-var toInteger = require('../toInteger'),
-    toLength = require('../toLength');
+var toInteger = require('./toInteger'),
+    toLength = require('./toLength');
 
 /**
  * The base implementation of `_.fill` without an iteratee call guard.

_baseFilter.js

@@ -1,4 +1,4 @@
-var baseEach = require('./baseEach');
+var baseEach = require('./_baseEach');
 
 /**
  * The base implementation of `_.filter` without support for iteratee shorthands.

_baseFind.js

@@ -1,7 +1,7 @@
 /**
  * The base implementation of methods like `_.find` and `_.findKey`, without
  * support for iteratee shorthands, which iterates over `collection` using
- * the provided `eachFunc`.
+ * `eachFunc`.
  *
  * @private
  * @param {Array|Object} collection The collection to search.

_baseFlatten.js

@@ -1,19 +1,19 @@
-var arrayPush = require('./arrayPush'),
-    isArguments = require('../isArguments'),
-    isArray = require('../isArray'),
-    isArrayLikeObject = require('../isArrayLikeObject');
+var arrayPush = require('./_arrayPush'),
+    isArguments = require('./isArguments'),
+    isArray = require('./isArray'),
+    isArrayLikeObject = require('./isArrayLikeObject');
 
 /**
  * The base implementation of `_.flatten` with support for restricting flattening.
  *
  * @private
  * @param {Array} array The array to flatten.
- * @param {boolean} [isDeep] Specify a deep flatten.
+ * @param {number} depth The maximum recursion depth.
  * @param {boolean} [isStrict] Restrict flattening to arrays-like objects.
  * @param {Array} [result=[]] The initial result value.
  * @returns {Array} Returns the new flattened array.
  */
-function baseFlatten(array, isDeep, isStrict, result) {
+function baseFlatten(array, depth, isStrict, result) {
   result || (result = []);
 
   var index = -1,
@@ -21,11 +21,11 @@ function baseFlatten(array, isDeep, isStrict, result) {
 
   while (++index < length) {
     var value = array[index];
-    if (isArrayLikeObject(value) &&
+    if (depth > 0 && isArrayLikeObject(value) &&
         (isStrict || isArray(value) || isArguments(value))) {
-      if (isDeep) {
+      if (depth > 1) {
         // Recursively flatten arrays (susceptible to call stack limits).
-        baseFlatten(value, isDeep, isStrict, result);
+        baseFlatten(value, depth - 1, isStrict, result);
       } else {
         arrayPush(result, value);
       }

_baseFor.js

@@ -1,4 +1,4 @@
-var createBaseFor = require('./createBaseFor');
+var createBaseFor = require('./_createBaseFor');
 
 /**
  * The base implementation of `baseForIn` and `baseForOwn` which iterates

_baseForIn.js

@@ -1,5 +1,5 @@
-var baseFor = require('./baseFor'),
-    keysIn = require('../keysIn');
+var baseFor = require('./_baseFor'),
+    keysIn = require('./keysIn');
 
 /**
  * The base implementation of `_.forIn` without support for iteratee shorthands.

_baseForOwn.js

@@ -1,5 +1,5 @@
-var baseFor = require('./baseFor'),
-    keys = require('../keys');
+var baseFor = require('./_baseFor'),
+    keys = require('./keys');
 
 /**
  * The base implementation of `_.forOwn` without support for iteratee shorthands.

_baseForOwnRight.js

@@ -1,5 +1,5 @@
-var baseForRight = require('./baseForRight'),
-    keys = require('../keys');
+var baseForRight = require('./_baseForRight'),
+    keys = require('./keys');
 
 /**
  * The base implementation of `_.forOwnRight` without support for iteratee shorthands.

_baseForRight.js

@@ -1,4 +1,4 @@
-var createBaseFor = require('./createBaseFor');
+var createBaseFor = require('./_createBaseFor');
 
 /**
  * This function is like `baseFor` except that it iterates over properties

_baseFunctions.js

@@ -1,9 +1,9 @@
-var arrayFilter = require('./arrayFilter'),
-    isFunction = require('../isFunction');
+var arrayFilter = require('./_arrayFilter'),
+    isFunction = require('./isFunction');
 
 /**
  * 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.

_baseGet.js

@@ -1,5 +1,5 @@
-var baseToPath = require('./baseToPath'),
-    isKey = require('./isKey');
+var baseCastPath = require('./_baseCastPath'),
+    isKey = require('./_isKey');
 
 /**
  * The base implementation of `_.get` without support for default values.
@@ -10,7 +10,7 @@ var baseToPath = require('./baseToPath'),
  * @returns {*} Returns the resolved value.
  */
 function baseGet(object, path) {
-  path = isKey(path, object) ? [path + ''] : baseToPath(path);
+  path = isKey(path, object) ? [path + ''] : baseCastPath(path);
 
   var index = 0,
       length = path.length;

_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;

_baseIndexOf.js

@@ -1,4 +1,4 @@
-var indexOfNaN = require('./indexOfNaN');
+var indexOfNaN = require('./_indexOfNaN');
 
 /**
  * The base implementation of `_.indexOf` without `fromIndex` bounds checks.

_baseIntersection.js

@@ -1,9 +1,9 @@
-var SetCache = require('./SetCache'),
-    arrayIncludes = require('./arrayIncludes'),
-    arrayIncludesWith = require('./arrayIncludesWith'),
-    arrayMap = require('./arrayMap'),
-    baseUnary = require('./baseUnary'),
-    cacheHas = require('./cacheHas');
+var SetCache = require('./_SetCache'),
+    arrayIncludes = require('./_arrayIncludes'),
+    arrayIncludesWith = require('./_arrayIncludesWith'),
+    arrayMap = require('./_arrayMap'),
+    baseUnary = require('./_baseUnary'),
+    cacheHas = require('./_cacheHas');
 
 /**
  * The base implementation of methods like `_.intersection`, without support
@@ -42,11 +42,17 @@ function baseIntersection(arrays, iteratee, comparator) {
     var value = array[index],
         computed = iteratee ? iteratee(value) : value;
 
-    if (!(seen ? cacheHas(seen, computed) : includes(result, computed, comparator))) {
+    if (!(seen
+          ? cacheHas(seen, computed)
+          : includes(result, computed, comparator)
+        )) {
       var othIndex = othLength;
       while (--othIndex) {
         var cache = caches[othIndex];
-        if (!(cache ? cacheHas(cache, computed) : includes(arrays[othIndex], computed, comparator))) {
+        if (!(cache
+              ? cacheHas(cache, computed)
+              : includes(arrays[othIndex], computed, comparator))
+            ) {
           continue outer;
         }
       }

_baseInverter.js

@@ -0,0 +1,21 @@
+var baseForOwn = require('./_baseForOwn');
+
+/**
+ * The base implementation of `_.invert` and `_.invertBy` which inverts
+ * `object` with values transformed by `iteratee` and set by `setter`.
+ *
+ * @private
+ * @param {Object} object The object to iterate over.
+ * @param {Function} setter The function to set `accumulator` values.
+ * @param {Function} iteratee The iteratee to transform values.
+ * @param {Object} accumulator The initial inverted object.
+ * @returns {Function} Returns `accumulator`.
+ */
+function baseInverter(object, setter, iteratee, accumulator) {
+  baseForOwn(object, function(value, key, object) {
+    setter(accumulator, iteratee(value), key, object);
+  });
+  return accumulator;
+}
+
+module.exports = baseInverter;

_baseInvoke.js

@@ -1,14 +1,13 @@
-var apply = require('./apply'),
-    baseToPath = require('./baseToPath'),
-    isKey = require('./isKey'),
-    last = require('../last'),
-    parent = require('./parent');
+var apply = require('./_apply'),
+    baseCastPath = require('./_baseCastPath'),
+    isKey = require('./_isKey'),
+    last = require('./last'),
+    parent = require('./_parent');
 
 /**
  * The base implementation of `_.invoke` without support for individual
  * method arguments.
  *
- *
  * @private
  * @param {Object} object The object to query.
  * @param {Array|string} path The path of the method to invoke.
@@ -17,7 +16,7 @@ var apply = require('./apply'),
  */
 function baseInvoke(object, path, args) {
   if (!isKey(path, object)) {
-    path = baseToPath(path);
+    path = baseCastPath(path);
     object = parent(object, path);
     path = last(path);
   }

_baseIsEqual.js

@@ -1,6 +1,6 @@
-var baseIsEqualDeep = require('./baseIsEqualDeep'),
-    isObject = require('../isObject'),
-    isObjectLike = require('../isObjectLike');
+var baseIsEqualDeep = require('./_baseIsEqualDeep'),
+    isObject = require('./isObject'),
+    isObjectLike = require('./isObjectLike');
 
 /**
  * The base implementation of `_.isEqual` which supports partial comparisons

_baseIsEqualDeep.js

@@ -1,11 +1,11 @@
-var Stack = require('./Stack'),
-    equalArrays = require('./equalArrays'),
-    equalByTag = require('./equalByTag'),
-    equalObjects = require('./equalObjects'),
-    getTag = require('./getTag'),
-    isArray = require('../isArray'),
-    isHostObject = require('./isHostObject'),
-    isTypedArray = require('../isTypedArray');
+var Stack = require('./_Stack'),
+    equalArrays = require('./_equalArrays'),
+    equalByTag = require('./_equalByTag'),
+    equalObjects = require('./_equalObjects'),
+    getTag = require('./_getTag'),
+    isArray = require('./isArray'),
+    isHostObject = require('./_isHostObject'),
+    isTypedArray = require('./isTypedArray');
 
 /** Used to compose bitmasks for comparison styles. */
 var PARTIAL_COMPARE_FLAG = 2;
@@ -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;

_baseIsMatch.js

@@ -1,5 +1,5 @@
-var Stack = require('./Stack'),
-    baseIsEqual = require('./baseIsEqual');
+var Stack = require('./_Stack'),
+    baseIsEqual = require('./_baseIsEqual');
 
 /** Used to compose bitmasks for comparison styles. */
 var UNORDERED_COMPARE_FLAG = 1,
@@ -47,7 +47,10 @@ function baseIsMatch(object, source, matchData, customizer) {
       var stack = new Stack,
           result = customizer ? customizer(objValue, srcValue, key, object, source, stack) : undefined;
 
-      if (!(result === undefined ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack) : result)) {
+      if (!(result === undefined
+            ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack)
+            : result
+          )) {
         return false;
       }
     }

_baseIteratee.js

@@ -1,8 +1,8 @@
-var baseMatches = require('./baseMatches'),
-    baseMatchesProperty = require('./baseMatchesProperty'),
-    identity = require('../identity'),
-    isArray = require('../isArray'),
-    property = require('../property');
+var baseMatches = require('./_baseMatches'),
+    baseMatchesProperty = require('./_baseMatchesProperty'),
+    identity = require('./identity'),
+    isArray = require('./isArray'),
+    property = require('./property');
 
 /**
  * The base implementation of `_.iteratee`.

_baseKeys.js

@@ -6,7 +6,6 @@ var nativeKeys = Object.keys;
  * property of prototypes or treat sparse arrays as dense.
  *
  * @private
- * @type Function
  * @param {Object} object The object to query.
  * @returns {Array} Returns the array of property names.
  */

_baseKeysIn.js

@@ -1,8 +1,8 @@
-var Reflect = require('./Reflect'),
-    iteratorToArray = require('./iteratorToArray');
+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,

_baseMap.js

@@ -1,5 +1,5 @@
-var baseEach = require('./baseEach'),
-    isArrayLike = require('../isArrayLike');
+var baseEach = require('./_baseEach'),
+    isArrayLike = require('./isArrayLike');
 
 /**
  * The base implementation of `_.map` without support for iteratee shorthands.

_baseMatches.js

@@ -1,5 +1,5 @@
-var baseIsMatch = require('./baseIsMatch'),
-    getMatchData = require('./getMatchData');
+var baseIsMatch = require('./_baseIsMatch'),
+    getMatchData = require('./_getMatchData');
 
 /**
  * The base implementation of `_.matches` which doesn't clone `source`.

_baseMatchesProperty.js

@@ -1,6 +1,6 @@
-var baseIsEqual = require('./baseIsEqual'),
-    get = require('../get'),
-    hasIn = require('../hasIn');
+var baseIsEqual = require('./_baseIsEqual'),
+    get = require('./get'),
+    hasIn = require('./hasIn');
 
 /** Used to compose bitmasks for comparison styles. */
 var UNORDERED_COMPARE_FLAG = 1,

_baseMerge.js

@@ -1,11 +1,11 @@
-var Stack = require('./Stack'),
-    arrayEach = require('./arrayEach'),
-    assignMergeValue = require('./assignMergeValue'),
-    baseMergeDeep = require('./baseMergeDeep'),
-    isArray = require('../isArray'),
-    isObject = require('../isObject'),
-    isTypedArray = require('../isTypedArray'),
-    keysIn = require('../keysIn');
+var Stack = require('./_Stack'),
+    arrayEach = require('./_arrayEach'),
+    assignMergeValue = require('./_assignMergeValue'),
+    baseMergeDeep = require('./_baseMergeDeep'),
+    isArray = require('./isArray'),
+    isObject = require('./isObject'),
+    isTypedArray = require('./isTypedArray'),
+    keysIn = require('./keysIn');
 
 /**
  * The base implementation of `_.merge` without support for multiple sources.
@@ -13,14 +13,18 @@ var Stack = require('./Stack'),
  * @private
  * @param {Object} object The destination object.
  * @param {Object} source The source object.
+ * @param {number} srcIndex The index of `source`.
  * @param {Function} [customizer] The function to customize merged values.
  * @param {Object} [stack] Tracks traversed source values and their merged counterparts.
  */
-function baseMerge(object, source, customizer, stack) {
+function baseMerge(object, source, srcIndex, customizer, stack) {
   if (object === source) {
     return;
   }
-  var props = (isArray(source) || isTypedArray(source)) ? undefined : keysIn(source);
+  var props = (isArray(source) || isTypedArray(source))
+    ? undefined
+    : keysIn(source);
+
   arrayEach(props || source, function(srcValue, key) {
     if (props) {
       key = srcValue;
@@ -28,10 +32,13 @@ function baseMerge(object, source, customizer, stack) {
     }
     if (isObject(srcValue)) {
       stack || (stack = new Stack);
-      baseMergeDeep(object, source, key, baseMerge, customizer, stack);
+      baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
     }
     else {
-      var newValue = customizer ? customizer(object[key], srcValue, (key + ''), object, source, stack) : undefined;
+      var newValue = customizer
+        ? customizer(object[key], srcValue, (key + ''), object, source, stack)
+        : undefined;
+
       if (newValue === undefined) {
         newValue = srcValue;
       }

_baseMergeDeep.js

@@ -0,0 +1,81 @@
+var assignMergeValue = require('./_assignMergeValue'),
+    baseClone = require('./_baseClone'),
+    copyArray = require('./_copyArray'),
+    isArguments = require('./isArguments'),
+    isArray = require('./isArray'),
+    isArrayLikeObject = require('./isArrayLikeObject'),
+    isFunction = require('./isFunction'),
+    isObject = require('./isObject'),
+    isPlainObject = require('./isPlainObject'),
+    isTypedArray = require('./isTypedArray'),
+    toPlainObject = require('./toPlainObject');
+
+/**
+ * A specialized version of `baseMerge` for arrays and objects which performs
+ * deep merges and tracks traversed objects enabling objects with circular
+ * references to be merged.
+ *
+ * @private
+ * @param {Object} object The destination object.
+ * @param {Object} source The source object.
+ * @param {string} key The key of the value to merge.
+ * @param {number} srcIndex The index of `source`.
+ * @param {Function} mergeFunc The function to merge values.
+ * @param {Function} [customizer] The function to customize assigned values.
+ * @param {Object} [stack] Tracks traversed source values and their merged counterparts.
+ */
+function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
+  var objValue = object[key],
+      srcValue = source[key],
+      stacked = stack.get(srcValue);
+
+  if (stacked) {
+    assignMergeValue(object, key, stacked);
+    return;
+  }
+  var newValue = customizer
+    ? customizer(objValue, srcValue, (key + ''), object, source, stack)
+    : undefined;
+
+  var isCommon = newValue === undefined;
+
+  if (isCommon) {
+    newValue = srcValue;
+    if (isArray(srcValue) || isTypedArray(srcValue)) {
+      if (isArray(objValue)) {
+        newValue = objValue;
+      }
+      else if (isArrayLikeObject(objValue)) {
+        newValue = copyArray(objValue);
+      }
+      else {
+        isCommon = false;
+        newValue = baseClone(srcValue, true);
+      }
+    }
+    else if (isPlainObject(srcValue) || isArguments(srcValue)) {
+      if (isArguments(objValue)) {
+        newValue = toPlainObject(objValue);
+      }
+      else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) {
+        isCommon = false;
+        newValue = baseClone(srcValue, true);
+      }
+      else {
+        newValue = objValue;
+      }
+    }
+    else {
+      isCommon = false;
+    }
+  }
+  stack.set(srcValue, newValue);
+
+  if (isCommon) {
+    // Recursively merge objects and arrays (susceptible to call stack limits).
+    mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
+  }
+  assignMergeValue(object, key, newValue);
+}
+
+module.exports = baseMergeDeep;

_baseOrderBy.js

@@ -1,8 +1,8 @@
-var arrayMap = require('./arrayMap'),
-    baseIteratee = require('./baseIteratee'),
-    baseMap = require('./baseMap'),
-    baseSortBy = require('./baseSortBy'),
-    compareMultiple = require('./compareMultiple');
+var arrayMap = require('./_arrayMap'),
+    baseIteratee = require('./_baseIteratee'),
+    baseMap = require('./_baseMap'),
+    baseSortBy = require('./_baseSortBy'),
+    compareMultiple = require('./_compareMultiple');
 
 /**
  * The base implementation of `_.orderBy` without param guards.

_basePick.js

@@ -1,4 +1,4 @@
-var arrayReduce = require('./arrayReduce');
+var arrayReduce = require('./_arrayReduce');
 
 /**
  * The base implementation of `_.pick` without support for individual

_basePickBy.js

@@ -1,4 +1,4 @@
-var baseForIn = require('./baseForIn');
+var baseForIn = require('./_baseForIn');
 
 /**
  * The base implementation of  `_.pickBy` without support for iteratee shorthands.
@@ -11,7 +11,7 @@ var baseForIn = require('./baseForIn');
 function basePickBy(object, predicate) {
   var result = {};
   baseForIn(object, function(value, key) {
-    if (predicate(value)) {
+    if (predicate(value, key)) {
       result[key] = value;
     }
   });

_basePropertyDeep.js

@@ -1,4 +1,4 @@
-var baseGet = require('./baseGet');
+var baseGet = require('./_baseGet');
 
 /**
  * A specialized version of `baseProperty` which supports deep paths.

_basePullAll.js

@@ -1,4 +1,4 @@
-var basePullAllBy = require('./basePullAllBy');
+var basePullAllBy = require('./_basePullAllBy');
 
 /**
  * The base implementation of `_.pullAll`.

_basePullAllBy.js

@@ -1,8 +1,8 @@
-var arrayMap = require('./arrayMap'),
-    baseIndexOf = require('./baseIndexOf');
+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

@@ -1,11 +1,11 @@
-var baseToPath = require('./baseToPath'),
-    isIndex = require('./isIndex'),
-    isKey = require('./isKey'),
-    last = require('../last'),
-    parent = require('./parent');
+var baseCastPath = require('./_baseCastPath'),
+    isIndex = require('./_isIndex'),
+    isKey = require('./_isKey'),
+    last = require('./last'),
+    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;
@@ -31,7 +31,7 @@ function basePullAt(array, indexes) {
         splice.call(array, index, 1);
       }
       else if (!isKey(index, array)) {
-        var path = baseToPath(index),
+        var path = baseCastPath(index),
             object = parent(array, path);
 
         if (object != null) {

_baseReduce.js

@@ -1,20 +1,19 @@
 /**
  * The base implementation of `_.reduce` and `_.reduceRight`, without support
- * for iteratee shorthands, which iterates over `collection` using the provided
- * `eachFunc`.
+ * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
  *
  * @private
  * @param {Array|Object} collection The collection to iterate over.
  * @param {Function} iteratee The function invoked per iteration.
  * @param {*} accumulator The initial value.
- * @param {boolean} initFromCollection Specify using the first or last element of `collection` as the initial value.
+ * @param {boolean} initAccum Specify using the first or last element of `collection` as the initial value.
  * @param {Function} eachFunc The function to iterate over `collection`.
  * @returns {*} Returns the accumulated value.
  */
-function baseReduce(collection, iteratee, accumulator, initFromCollection, eachFunc) {
+function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
   eachFunc(collection, function(value, index, collection) {
-    accumulator = initFromCollection
-      ? (initFromCollection = false, value)
+    accumulator = initAccum
+      ? (initAccum = false, value)
       : iteratee(accumulator, value, index, collection);
   });
   return accumulator;

_baseSet.js

@@ -1,8 +1,8 @@
-var assignValue = require('./assignValue'),
-    baseToPath = require('./baseToPath'),
-    isIndex = require('./isIndex'),
-    isKey = require('./isKey'),
-    isObject = require('../isObject');
+var assignValue = require('./_assignValue'),
+    baseCastPath = require('./_baseCastPath'),
+    isIndex = require('./_isIndex'),
+    isKey = require('./_isKey'),
+    isObject = require('./isObject');
 
 /**
  * The base implementation of `_.set`.
@@ -15,7 +15,7 @@ var assignValue = require('./assignValue'),
  * @returns {Object} Returns `object`.
  */
 function baseSet(object, path, value, customizer) {
-  path = isKey(path, object) ? [path + ''] : baseToPath(path);
+  path = isKey(path, object) ? [path + ''] : baseCastPath(path);
 
   var index = -1,
       length = path.length,
@@ -30,7 +30,9 @@ function baseSet(object, path, value, customizer) {
         var objValue = nested[key];
         newValue = customizer ? customizer(objValue, key, nested) : undefined;
         if (newValue === undefined) {
-          newValue = objValue == null ? (isIndex(path[index + 1]) ? [] : {}) : objValue;
+          newValue = objValue == null
+            ? (isIndex(path[index + 1]) ? [] : {})
+            : objValue;
         }
       }
       assignValue(nested, key, newValue);

_baseSetData.js

@@ -1,5 +1,5 @@
-var identity = require('../identity'),
-    metaMap = require('./metaMap');
+var identity = require('./identity'),
+    metaMap = require('./_metaMap');
 
 /**
  * The base implementation of `setData` without support for hot loop detection.

_baseSome.js

@@ -1,4 +1,4 @@
-var baseEach = require('./baseEach');
+var baseEach = require('./_baseEach');
 
 /**
  * The base implementation of `_.some` without support for iteratee shorthands.