Bump to v4.16.2.

README.md

@@ -1,12 +1,12 @@
-# lodash v4.14.2
+# lodash v4.16.2
 
 The [Lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules.
 
 ## Installation
 
 Using npm:
-```bash
-$ {sudo -H} npm i -g npm
+```shell
+$ npm i -g npm
 $ npm i --save lodash
 ```
 
@@ -16,25 +16,24 @@ In Node.js:
 var _ = require('lodash');
 // Load the core build.
 var _ = require('lodash/core');
-// Load the fp build for immutable auto-curried iteratee-first data-last methods.
+// Load the FP build for immutable auto-curried iteratee-first data-last methods.
 var fp = require('lodash/fp');
 
-// Load a method category.
+// Load method categories.
 var array = require('lodash/array');
 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');
+// Cherry-pick methods for smaller browserify/rollup/webpack bundles.
+var at = require('lodash/at');
+var curryN = require('lodash/fp/curryN');
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.14.2-npm) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.16.2-npm) for more details.
 
 **Note:**<br>
-Don’t assign values to the [special variable](http://nodejs.org/api/repl.html#repl_repl_features) `_` in the Node.js < 6 REPL.<br>
-Install [n_](https://www.npmjs.com/package/n_) for a REPL that includes `lodash` by default.
+Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL.
 
 ## Support
 
-Tested in Chrome 51-52, Firefox 47-48, IE 9-11, Edge 14, Safari 8-9, Node.js 0.10-6, & PhantomJS 2.1.1.<br>
+Tested in Chrome 52-53, Firefox 47-48, IE 11, Edge 14, Safari 9-10, Node.js 4-6, & PhantomJS 2.1.1.<br>
 Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available.

_Stack.js

@@ -13,7 +13,8 @@ var ListCache = require('./_ListCache'),
  * @param {Array} [entries] The key-value pairs to cache.
  */
 function Stack(entries) {
-  this.__data__ = new ListCache(entries);
+  var data = this.__data__ = new ListCache(entries);
+  this.size = data.size;
 }
 
 // Add methods to `Stack`.

_arrayIncludes.js

@@ -5,7 +5,7 @@ var baseIndexOf = require('./_baseIndexOf');
  * specifying an index to search from.
  *
  * @private
- * @param {Array} [array] The array to search.
+ * @param {Array} [array] The array to inspect.
  * @param {*} target The value to search for.
  * @returns {boolean} Returns `true` if `target` is found, else `false`.
  */

_arrayIncludesWith.js

@@ -2,7 +2,7 @@
  * This function is like `arrayIncludes` except that it accepts a comparator.
  *
  * @private
- * @param {Array} [array] The array to search.
+ * @param {Array} [array] The array to inspect.
  * @param {*} target The value to search for.
  * @param {Function} comparator The comparator invoked per element.
  * @returns {boolean} Returns `true` if `target` is found, else `false`.

_arrayLikeKeys.js

@@ -1,8 +1,7 @@
 var baseTimes = require('./_baseTimes'),
     isArguments = require('./isArguments'),
     isArray = require('./isArray'),
-    isIndex = require('./_isIndex'),
-    isString = require('./isString');
+    isIndex = require('./_isIndex');
 
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
@@ -19,7 +18,9 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @returns {Array} Returns the array of property names.
  */
 function arrayLikeKeys(value, inherited) {
-  var result = (isArray(value) || isString(value) || isArguments(value))
+  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
+  // Safari 9 makes `arguments.length` enumerable in strict mode.
+  var result = (isArray(value) || isArguments(value))
     ? baseTimes(value.length, String)
     : [];
 

_arraySample.js

@@ -0,0 +1,15 @@
+var baseRandom = require('./_baseRandom');
+
+/**
+ * A specialized version of `_.sample` for arrays.
+ *
+ * @private
+ * @param {Array} array The array to sample.
+ * @returns {*} Returns the random element.
+ */
+function arraySample(array) {
+  var length = array.length;
+  return length ? array[baseRandom(0, length - 1)] : undefined;
+}
+
+module.exports = arraySample;

_arraySampleSize.js

@@ -0,0 +1,16 @@
+var copyArray = require('./_copyArray'),
+    shuffleSelf = require('./_shuffleSelf');
+
+/**
+ * A specialized version of `_.sampleSize` for arrays.
+ *
+ * @private
+ * @param {Array} array The array to sample.
+ * @param {number} n The number of elements to sample.
+ * @returns {Array} Returns the random elements.
+ */
+function arraySampleSize(array, n) {
+  return shuffleSelf(copyArray(array), n);
+}
+
+module.exports = arraySampleSize;

_arrayShuffle.js

@@ -0,0 +1,15 @@
+var copyArray = require('./_copyArray'),
+    shuffleSelf = require('./_shuffleSelf');
+
+/**
+ * A specialized version of `_.shuffle` for arrays.
+ *
+ * @private
+ * @param {Array} array The array to shuffle.
+ * @returns {Array} Returns the new shuffled array.
+ */
+function arrayShuffle(array) {
+  return shuffleSelf(copyArray(array));
+}
+
+module.exports = arrayShuffle;

_asciiSize.js

@@ -0,0 +1,12 @@
+var baseProperty = require('./_baseProperty');
+
+/**
+ * Gets the size of an ASCII `string`.
+ *
+ * @private
+ * @param {string} string The string inspect.
+ * @returns {number} Returns the string size.
+ */
+var asciiSize = baseProperty('length');
+
+module.exports = asciiSize;

_asciiToArray.js

@@ -0,0 +1,12 @@
+/**
+ * Converts an ASCII `string` to an array.
+ *
+ * @private
+ * @param {string} string The string to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function asciiToArray(string) {
+  return string.split('');
+}
+
+module.exports = asciiToArray;

_asciiWords.js

@@ -0,0 +1,15 @@
+/** Used to match words composed of alphanumeric characters. */
+var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
+
+/**
+ * Splits an ASCII `string` into an array of its words.
+ *
+ * @private
+ * @param {string} The string to inspect.
+ * @returns {Array} Returns the words of `string`.
+ */
+function asciiWords(string) {
+  return string.match(reAsciiWord) || [];
+}
+
+module.exports = asciiWords;

_assignMergeValue.js

@@ -1,4 +1,5 @@
-var eq = require('./eq');
+var baseAssignValue = require('./_baseAssignValue'),
+    eq = require('./eq');
 
 /**
  * This function is like `assignValue` except that it doesn't assign
@@ -12,7 +13,7 @@ var eq = require('./eq');
 function assignMergeValue(object, key, value) {
   if ((value !== undefined && !eq(object[key], value)) ||
       (typeof key == 'number' && value === undefined && !(key in object))) {
-    object[key] = value;
+    baseAssignValue(object, key, value);
   }
 }
 

_assignValue.js

@@ -1,4 +1,5 @@
-var eq = require('./eq');
+var baseAssignValue = require('./_baseAssignValue'),
+    eq = require('./eq');
 
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
@@ -20,7 +21,7 @@ function assignValue(object, key, value) {
   var objValue = object[key];
   if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
       (value === undefined && !(key in object))) {
-    object[key] = value;
+    baseAssignValue(object, key, value);
   }
 }
 

_assocIndexOf.js

@@ -4,7 +4,7 @@ var eq = require('./eq');
  * Gets the index at which the `key` is found in `array` of key-value pairs.
  *
  * @private
- * @param {Array} array The array to search.
+ * @param {Array} array The array to inspect.
  * @param {*} key The key to search for.
  * @returns {number} Returns the index of the matched value, else `-1`.
  */

_baseAssignValue.js

@@ -0,0 +1,26 @@
+/** Built-in value references. */
+var defineProperty = Object.defineProperty;
+
+/**
+ * The base implementation of `assignValue` and `assignMergeValue` without
+ * value checks.
+ *
+ * @private
+ * @param {Object} object The object to modify.
+ * @param {string} key The key of the property to assign.
+ * @param {*} value The value to assign.
+ */
+function baseAssignValue(object, key, value) {
+  if (key == '__proto__' && defineProperty) {
+    defineProperty(object, key, {
+      'configurable': true,
+      'enumerable': true,
+      'value': value,
+      'writable': true
+    });
+  } else {
+    object[key] = value;
+  }
+}
+
+module.exports = baseAssignValue;

_baseClone.js

@@ -12,7 +12,6 @@ var Stack = require('./_Stack'),
     initCloneObject = require('./_initCloneObject'),
     isArray = require('./isArray'),
     isBuffer = require('./isBuffer'),
-    isHostObject = require('./_isHostObject'),
     isObject = require('./isObject'),
     keys = require('./keys');
 
@@ -100,9 +99,6 @@ function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
       return cloneBuffer(value, isDeep);
     }
     if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
-      if (isHostObject(value)) {
-        return object ? value : {};
-      }
       result = initCloneObject(isFunc ? {} : value);
       if (!isDeep) {
         return copySymbols(value, baseAssign(result, value));

_baseCreate.js

@@ -8,11 +8,23 @@ var objectCreate = Object.create;
  * properties to the created object.
  *
  * @private
- * @param {Object} prototype The object to inherit from.
+ * @param {Object} proto The object to inherit from.
  * @returns {Object} Returns the new object.
  */
-function baseCreate(proto) {
-  return isObject(proto) ? objectCreate(proto) : {};
-}
+var baseCreate = (function() {
+  function object() {}
+  return function(proto) {
+    if (!isObject(proto)) {
+      return {};
+    }
+    if (objectCreate) {
+      return objectCreate(proto);
+    }
+    object.prototype = prototype;
+    var result = new object;
+    object.prototype = undefined;
+    return result;
+  };
+}());
 
 module.exports = baseCreate;

_baseDelay.js

@@ -1,4 +1,4 @@
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /**

_baseFindIndex.js

@@ -3,7 +3,7 @@
  * support for iteratee shorthands.
  *
  * @private
- * @param {Array} array The array to search.
+ * @param {Array} array The array to inspect.
  * @param {Function} predicate The function invoked per iteration.
  * @param {number} fromIndex The index to search from.
  * @param {boolean} [fromRight] Specify iterating from right to left.

_baseFindKey.js

@@ -4,7 +4,7 @@
  * using `eachFunc`.
  *
  * @private
- * @param {Array|Object} collection The collection to search.
+ * @param {Array|Object} collection The collection to inspect.
  * @param {Function} predicate The function invoked per iteration.
  * @param {Function} eachFunc The function to iterate over `collection`.
  * @returns {*} Returns the found element or its key, else `undefined`.

_baseIndexOf.js

@@ -1,28 +1,20 @@
 var baseFindIndex = require('./_baseFindIndex'),
-    baseIsNaN = require('./_baseIsNaN');
+    baseIsNaN = require('./_baseIsNaN'),
+    strictIndexOf = require('./_strictIndexOf');
 
 /**
  * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
  *
  * @private
- * @param {Array} array The array to search.
+ * @param {Array} array The array to inspect.
  * @param {*} value The value to search for.
  * @param {number} fromIndex The index to search from.
  * @returns {number} Returns the index of the matched value, else `-1`.
  */
 function baseIndexOf(array, value, fromIndex) {
-  if (value !== value) {
-    return baseFindIndex(array, baseIsNaN, fromIndex);
-  }
-  var index = fromIndex - 1,
-      length = array.length;
-
-  while (++index < length) {
-    if (array[index] === value) {
-      return index;
-    }
-  }
-  return -1;
+  return value === value
+    ? strictIndexOf(array, value, fromIndex)
+    : baseFindIndex(array, baseIsNaN, fromIndex);
 }
 
 module.exports = baseIndexOf;

_baseIndexOfWith.js

@@ -2,7 +2,7 @@
  * This function is like `baseIndexOf` except that it accepts a comparator.
  *
  * @private
- * @param {Array} array The array to search.
+ * @param {Array} array The array to inspect.
  * @param {*} value The value to search for.
  * @param {number} fromIndex The index to search from.
  * @param {Function} comparator The comparator invoked per element.

_baseIsEqualDeep.js

@@ -4,7 +4,6 @@ var Stack = require('./_Stack'),
     equalObjects = require('./_equalObjects'),
     getTag = require('./_getTag'),
     isArray = require('./isArray'),
-    isHostObject = require('./_isHostObject'),
     isTypedArray = require('./isTypedArray');
 
 /** Used to compose bitmasks for comparison styles. */
@@ -50,8 +49,8 @@ function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
     othTag = getTag(other);
     othTag = othTag == argsTag ? objectTag : othTag;
   }
-  var objIsObj = objTag == objectTag && !isHostObject(object),
-      othIsObj = othTag == objectTag && !isHostObject(other),
+  var objIsObj = objTag == objectTag,
+      othIsObj = othTag == objectTag,
       isSameTag = objTag == othTag;
 
   if (isSameTag && !objIsObj) {

_baseIsNative.js

@@ -1,5 +1,4 @@
 var isFunction = require('./isFunction'),
-    isHostObject = require('./_isHostObject'),
     isMasked = require('./_isMasked'),
     isObject = require('./isObject'),
     toSource = require('./_toSource');
@@ -14,10 +13,11 @@ var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
 var reIsHostCtor = /^\[object .+?Constructor\]$/;
 
 /** Used for built-in method references. */
-var objectProto = Object.prototype;
+var funcProto = Function.prototype,
+    objectProto = Object.prototype;
 
 /** Used to resolve the decompiled source of functions. */
-var funcToString = Function.prototype.toString;
+var funcToString = funcProto.toString;
 
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;
@@ -40,7 +40,7 @@ function baseIsNative(value) {
   if (!isObject(value) || isMasked(value)) {
     return false;
   }
-  var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
+  var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
   return pattern.test(toSource(value));
 }
 

_basePickBy.js

@@ -1,3 +1,5 @@
+var baseAssignValue = require('./_baseAssignValue');
+
 /**
  * The base implementation of  `_.pickBy` without support for iteratee shorthands.
  *
@@ -17,7 +19,7 @@ function basePickBy(object, props, predicate) {
         value = object[key];
 
     if (predicate(value, key)) {
-      result[key] = value;
+      baseAssignValue(result, key, value);
     }
   }
   return result;

_baseRest.js

@@ -1,7 +1,6 @@
-var apply = require('./_apply');
-
-/* Built-in method references for those with the same name as other `lodash` methods. */
-var nativeMax = Math.max;
+var identity = require('./identity'),
+    overRest = require('./_overRest'),
+    setToString = require('./_setToString');
 
 /**
  * The base implementation of `_.rest` which doesn't validate or coerce arguments.
@@ -12,24 +11,7 @@ var nativeMax = Math.max;
  * @returns {Function} Returns the new function.
  */
 function baseRest(func, start) {
-  start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
-  return function() {
-    var args = arguments,
-        index = -1,
-        length = nativeMax(args.length - start, 0),
-        array = Array(length);
-
-    while (++index < length) {
-      array[index] = args[start + index];
-    }
-    index = -1;
-    var otherArgs = Array(start + 1);
-    while (++index < start) {
-      otherArgs[index] = args[index];
-    }
-    otherArgs[start] = array;
-    return apply(func, this, otherArgs);
-  };
+  return setToString(overRest(func, start, identity), func + '');
 }
 
 module.exports = baseRest;

_baseSample.js

@@ -0,0 +1,15 @@
+var arraySample = require('./_arraySample'),
+    values = require('./values');
+
+/**
+ * The base implementation of `_.sample`.
+ *
+ * @private
+ * @param {Array|Object} collection The collection to sample.
+ * @returns {*} Returns the random element.
+ */
+function baseSample(collection) {
+  return arraySample(values(collection));
+}
+
+module.exports = baseSample;

_baseSampleSize.js

@@ -0,0 +1,16 @@
+var shuffleSelf = require('./_shuffleSelf'),
+    values = require('./values');
+
+/**
+ * The base implementation of `_.sampleSize` without param guards.
+ *
+ * @private
+ * @param {Array|Object} collection The collection to sample.
+ * @param {number} n The number of elements to sample.
+ * @returns {Array} Returns the random elements.
+ */
+function baseSampleSize(collection, n) {
+  return shuffleSelf(values(collection), n);
+}
+
+module.exports = baseSampleSize;

_baseSet.js

@@ -9,7 +9,7 @@ var assignValue = require('./_assignValue'),
  * The base implementation of `_.set`.
  *
  * @private
- * @param {Object} object The object to query.
+ * @param {Object} object The object to modify.
  * @param {Array|string} path The path of the property to set.
  * @param {*} value The value to set.
  * @param {Function} [customizer] The function to customize path creation.

_baseSetData.js

@@ -2,7 +2,7 @@ var identity = require('./identity'),
     metaMap = require('./_metaMap');
 
 /**
- * The base implementation of `setData` without support for hot loop detection.
+ * The base implementation of `setData` without support for hot loop shorting.
  *
  * @private
  * @param {Function} func The function to associate metadata with.

_baseSetToString.js

@@ -0,0 +1,22 @@
+var constant = require('./constant'),
+    identity = require('./identity'),
+    nativeDefineProperty = require('./_nativeDefineProperty');
+
+/**
+ * The base implementation of `setToString` without support for hot loop shorting.
+ *
+ * @private
+ * @param {Function} func The function to modify.
+ * @param {Function} string The `toString` result.
+ * @returns {Function} Returns `func`.
+ */
+var baseSetToString = !nativeDefineProperty ? identity : function(func, string) {
+  return nativeDefineProperty(func, 'toString', {
+    'configurable': true,
+    'enumerable': false,
+    'value': constant(string),
+    'writable': true
+  });
+};
+
+module.exports = baseSetToString;

_baseShuffle.js

@@ -0,0 +1,15 @@
+var shuffleSelf = require('./_shuffleSelf'),
+    values = require('./values');
+
+/**
+ * The base implementation of `_.shuffle`.
+ *
+ * @private
+ * @param {Array|Object} collection The collection to shuffle.
+ * @returns {Array} Returns the new shuffled array.
+ */
+function baseShuffle(collection) {
+  return shuffleSelf(values(collection));
+}
+
+module.exports = baseShuffle;

_baseUpdate.js

@@ -5,7 +5,7 @@ var baseGet = require('./_baseGet'),
  * The base implementation of `_.update`.
  *
  * @private
- * @param {Object} object The object to query.
+ * @param {Object} object The object to modify.
  * @param {Array|string} path The path of the property to update.
  * @param {Function} updater The function to produce the updated value.
  * @param {Function} [customizer] The function to customize path creation.

_cacheHas.js

@@ -1,5 +1,5 @@
 /**
- * Checks if a cache value for `key` exists.
+ * Checks if a `cache` value for `key` exists.
  *
  * @private
  * @param {Object} cache The cache to query.

_castRest.js

@@ -0,0 +1,14 @@
+var baseRest = require('./_baseRest');
+
+/**
+ * A `baseRest` alias which can be replaced with `identity` by module
+ * replacement plugins.
+ *
+ * @private
+ * @type {Function}
+ * @param {Function} func The function to apply a rest parameter to.
+ * @returns {Function} Returns the new function.
+ */
+var castRest = baseRest;
+
+module.exports = castRest;

_cloneBuffer.js

@@ -1,3 +1,18 @@
+var root = require('./_root');
+
+/** Detect free variable `exports`. */
+var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
+
+/** Detect free variable `module`. */
+var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
+
+/** Detect the popular CommonJS extension `module.exports`. */
+var moduleExports = freeModule && freeModule.exports === freeExports;
+
+/** Built-in value references. */
+var Buffer = moduleExports ? root.Buffer : undefined,
+    allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined;
+
 /**
  * Creates a clone of  `buffer`.
  *
@@ -10,7 +25,9 @@ function cloneBuffer(buffer, isDeep) {
   if (isDeep) {
     return buffer.slice();
   }
-  var result = new buffer.constructor(buffer.length);
+  var length = buffer.length,
+      result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
+
   buffer.copy(result);
   return result;
 }

_copyObject.js

@@ -1,4 +1,5 @@
-var assignValue = require('./_assignValue');
+var assignValue = require('./_assignValue'),
+    baseAssignValue = require('./_baseAssignValue');
 
 /**
  * Copies properties of `source` to `object`.
@@ -11,6 +12,7 @@ var assignValue = require('./_assignValue');
  * @returns {Object} Returns `object`.
  */
 function copyObject(source, props, object, customizer) {
+  var isNew = !object;
   object || (object = {});
 
   var index = -1,
@@ -23,7 +25,14 @@ function copyObject(source, props, object, customizer) {
       ? customizer(object[key], source[key], key, object, source)
       : undefined;
 
-    assignValue(object, key, newValue === undefined ? source[key] : newValue);
+    if (newValue === undefined) {
+      newValue = source[key];
+    }
+    if (isNew) {
+      baseAssignValue(object, key, newValue);
+    } else {
+      assignValue(object, key, newValue);
+    }
   }
   return object;
 }

_countHolders.js

@@ -12,7 +12,7 @@ function countHolders(array, placeholder) {
 
   while (length--) {
     if (array[length] === placeholder) {
-      result++;
+      ++result;
     }
   }
   return result;

_createCaseFirst.js

@@ -1,5 +1,5 @@
 var castSlice = require('./_castSlice'),
-    reHasComplexSymbol = require('./_reHasComplexSymbol'),
+    hasUnicode = require('./_hasUnicode'),
     stringToArray = require('./_stringToArray'),
     toString = require('./toString');
 
@@ -14,7 +14,7 @@ function createCaseFirst(methodName) {
   return function(string) {
     string = toString(string);
 
-    var strSymbols = reHasComplexSymbol.test(string)
+    var strSymbols = hasUnicode(string)
       ? stringToArray(string)
       : undefined;
 

_createFlow.js

@@ -1,6 +1,5 @@
 var LodashWrapper = require('./_LodashWrapper'),
-    baseFlatten = require('./_baseFlatten'),
-    baseRest = require('./_baseRest'),
+    flatRest = require('./_flatRest'),
     getData = require('./_getData'),
     getFuncName = require('./_getFuncName'),
     isArray = require('./isArray'),
@@ -9,7 +8,7 @@ var LodashWrapper = require('./_LodashWrapper'),
 /** Used as the size to enable large array optimizations. */
 var LARGE_ARRAY_SIZE = 200;
 
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /** Used to compose bitmasks for function metadata. */
@@ -26,9 +25,7 @@ var CURRY_FLAG = 8,
  * @returns {Function} Returns the new flow function.
  */
 function createFlow(fromRight) {
-  return baseRest(function(funcs) {
-    funcs = baseFlatten(funcs, 1);
-
+  return flatRest(function(funcs) {
     var length = funcs.length,
         index = length,
         prereq = LodashWrapper.prototype.thru;

_createOver.js

@@ -1,10 +1,9 @@
 var apply = require('./_apply'),
     arrayMap = require('./_arrayMap'),
-    baseFlatten = require('./_baseFlatten'),
     baseIteratee = require('./_baseIteratee'),
     baseRest = require('./_baseRest'),
     baseUnary = require('./_baseUnary'),
-    isArray = require('./isArray');
+    flatRest = require('./_flatRest');
 
 /**
  * Creates a function like `_.over`.
@@ -14,11 +13,8 @@ var apply = require('./_apply'),
  * @returns {Function} Returns the new over function.
  */
 function createOver(arrayFunc) {
-  return baseRest(function(iteratees) {
-    iteratees = (iteratees.length == 1 && isArray(iteratees[0]))
-      ? arrayMap(iteratees[0], baseUnary(baseIteratee))
-      : arrayMap(baseFlatten(iteratees, 1), baseUnary(baseIteratee));
-
+  return flatRest(function(iteratees) {
+    iteratees = arrayMap(iteratees, baseUnary(baseIteratee));
     return baseRest(function(args) {
       var thisArg = this;
       return arrayFunc(iteratees, function(iteratee) {

_createPadding.js

@@ -1,7 +1,7 @@
 var baseRepeat = require('./_baseRepeat'),
     baseToString = require('./_baseToString'),
     castSlice = require('./_castSlice'),
-    reHasComplexSymbol = require('./_reHasComplexSymbol'),
+    hasUnicode = require('./_hasUnicode'),
     stringSize = require('./_stringSize'),
     stringToArray = require('./_stringToArray');
 
@@ -25,7 +25,7 @@ function createPadding(length, chars) {
     return charsLength ? baseRepeat(chars, length) : chars;
   }
   var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
-  return reHasComplexSymbol.test(chars)
+  return hasUnicode(chars)
     ? castSlice(stringToArray(result), 0, length).join('')
     : result.slice(0, length);
 }

_createWrap.js

@@ -9,7 +9,7 @@ var baseSetData = require('./_baseSetData'),
     setWrapToString = require('./_setWrapToString'),
     toInteger = require('./toInteger');
 
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /** Used to compose bitmasks for function metadata. */

_deburrLetter.js

@@ -1,15 +1,16 @@
 var basePropertyOf = require('./_basePropertyOf');
 
-/** Used to map latin-1 supplementary letters to basic latin letters. */
+/** Used to map Latin Unicode letters to basic Latin letters. */
 var deburredLetters = {
+  // Latin-1 Supplement block.
   '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
   '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
   '\xc7': 'C',  '\xe7': 'c',
   '\xd0': 'D',  '\xf0': 'd',
   '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
   '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
-  '\xcC': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
-  '\xeC': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
+  '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
+  '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
   '\xd1': 'N',  '\xf1': 'n',
   '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
   '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
@@ -18,11 +19,48 @@ var deburredLetters = {
   '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
   '\xc6': 'Ae', '\xe6': 'ae',
   '\xde': 'Th', '\xfe': 'th',
-  '\xdf': 'ss'
+  '\xdf': 'ss',
+  // Latin Extended-A block.
+  '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
+  '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
+  '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
+  '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
+  '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
+  '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
+  '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
+  '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
+  '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
+  '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
+  '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
+  '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
+  '\u0134': 'J',  '\u0135': 'j',
+  '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
+  '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
+  '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
+  '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
+  '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
+  '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
+  '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
+  '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
+  '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
+  '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
+  '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
+  '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
+  '\u0163': 't',  '\u0165': 't', '\u0167': 't',
+  '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
+  '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
+  '\u0174': 'W',  '\u0175': 'w',
+  '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
+  '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
+  '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
+  '\u0132': 'IJ', '\u0133': 'ij',
+  '\u0152': 'Oe', '\u0153': 'oe',
+  '\u0149': "'n", '\u017f': 's'
 };
 
 /**
- * Used by `_.deburr` to convert latin-1 supplementary letters to basic latin letters.
+ * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
+ * letters to basic Latin letters.
  *
  * @private
  * @param {string} letter The matched letter to deburr.

_defineProperty.js

@@ -1,11 +0,0 @@
-var getNative = require('./_getNative');
-
-/* Used to set `toString` methods. */
-var defineProperty = (function() {
-  var func = getNative(Object, 'defineProperty'),
-      name = getNative.name;
-
-  return (name && name.length > 2) ? func : undefined;
-}());
-
-module.exports = defineProperty;

_equalArrays.js

@@ -1,5 +1,6 @@
 var SetCache = require('./_SetCache'),
-    arraySome = require('./_arraySome');
+    arraySome = require('./_arraySome'),
+    cacheHas = require('./_cacheHas');
 
 /** Used to compose bitmasks for comparison styles. */
 var UNORDERED_COMPARE_FLAG = 1,
@@ -59,9 +60,9 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
     // Recursively compare arrays (susceptible to call stack limits).
     if (seen) {
       if (!arraySome(other, function(othValue, othIndex) {
-            if (!seen.has(othIndex) &&
+            if (!cacheHas(seen, othIndex) &&
                 (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {
-              return seen.add(othIndex);
+              return seen.push(othIndex);
             }
           })) {
         result = false;

_escapeHtmlChar.js

@@ -6,8 +6,7 @@ var htmlEscapes = {
   '<': '&lt;',
   '>': '&gt;',
   '"': '&quot;',
-  "'": '&#39;',
-  '`': '&#96;'
+  "'": '&#39;'
 };
 
 /**

_flatRest.js

@@ -0,0 +1,16 @@
+var flatten = require('./flatten'),
+    overRest = require('./_overRest'),
+    setToString = require('./_setToString');
+
+/**
+ * A specialized version of `baseRest` which flattens the rest array.
+ *
+ * @private
+ * @param {Function} func The function to apply a rest parameter to.
+ * @returns {Function} Returns the new function.
+ */
+function flatRest(func) {
+  return setToString(overRest(func, undefined, flatten), func + '');
+}
+
+module.exports = flatRest;

_getTag.js

@@ -41,8 +41,7 @@ var dataViewCtorString = toSource(DataView),
  */
 var getTag = baseGetTag;
 
-// Fallback for data views, maps, sets, and weak maps in IE 11,
-// for data views in Edge, and promises in Node.js.
+// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
 if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
     (Map && getTag(new Map) != mapTag) ||
     (Promise && getTag(Promise.resolve()) != promiseTag) ||

_hasPath.js

@@ -4,7 +4,6 @@ var castPath = require('./_castPath'),
     isIndex = require('./_isIndex'),
     isKey = require('./_isKey'),
     isLength = require('./isLength'),
-    isString = require('./isString'),
     toKey = require('./_toKey');
 
 /**
@@ -19,9 +18,9 @@ var castPath = require('./_castPath'),
 function hasPath(object, path, hasFunc) {
   path = isKey(path, object) ? [path] : castPath(path);
 
-  var result,
-      index = -1,
-      length = path.length;
+  var index = -1,
+      length = path.length,
+      result = false;
 
   while (++index < length) {
     var key = toKey(path[index]);
@@ -30,12 +29,12 @@ function hasPath(object, path, hasFunc) {
     }
     object = object[key];
   }
-  if (result) {
+  if (result || ++index != length) {
     return result;
   }
-  var length = object ? object.length : 0;
+  length = object ? object.length : 0;
   return !!length && isLength(length) && isIndex(key, length) &&
-    (isArray(object) || isString(object) || isArguments(object));
+    (isArray(object) || isArguments(object));
 }
 
 module.exports = hasPath;

_hasUnicode.js

@@ -8,6 +8,17 @@ var rsAstralRange = '\\ud800-\\udfff',
 var rsZWJ = '\\u200d';
 
 /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
-var reHasComplexSymbol = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
+var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
 
-module.exports = reHasComplexSymbol;
+/**
+ * Checks if `string` contains Unicode symbols.
+ *
+ * @private
+ * @param {string} string The string to inspect.
+ * @returns {boolean} Returns `true` if a symbol is found, else `false`.
+ */
+function hasUnicode(string) {
+  return reHasUnicode.test(string);
+}
+
+module.exports = hasUnicode;

_hasUnicodeWord.js

@@ -0,0 +1,15 @@
+/** Used to detect strings that need a more robust regexp to match words. */
+var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2,}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;
+
+/**
+ * Checks if `string` contains a word composed of Unicode symbols.
+ *
+ * @private
+ * @param {string} string The string to inspect.
+ * @returns {boolean} Returns `true` if a word is found, else `false`.
+ */
+function hasUnicodeWord(string) {
+  return reHasUnicodeWord.test(string);
+}
+
+module.exports = hasUnicodeWord;

_hashClear.js

@@ -9,6 +9,7 @@ var nativeCreate = require('./_nativeCreate');
  */
 function hashClear() {
   this.__data__ = nativeCreate ? nativeCreate(null) : {};
+  this.size = 0;
 }
 
 module.exports = hashClear;

_hashDelete.js

@@ -9,7 +9,9 @@
  * @returns {boolean} Returns `true` if the entry was removed, else `false`.
  */
 function hashDelete(key) {
-  return this.has(key) && delete this.__data__[key];
+  var result = this.has(key) && delete this.__data__[key];
+  this.size -= result ? 1 : 0;
+  return result;
 }
 
 module.exports = hashDelete;

_hashSet.js

@@ -15,6 +15,7 @@ var HASH_UNDEFINED = '__lodash_hash_undefined__';
  */
 function hashSet(key, value) {
   var data = this.__data__;
+  this.size += this.has(key) ? 0 : 1;
   data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
   return this;
 }

_insertWrapDetails.js

@@ -10,9 +10,11 @@ var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/;
  * @returns {string} Returns the modified source.
  */
 function insertWrapDetails(source, details) {
-  var length = details.length,
-      lastIndex = length - 1;
-
+  var length = details.length;
+  if (!length) {
+    return source;
+  }
+  var lastIndex = length - 1;
   details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
   details = details.join(length > 2 ? ', ' : ' ');
   return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');

_isHostObject.js

@@ -1,20 +0,0 @@
-/**
- * Checks if `value` is a host object in IE < 9.
- *
- * @private
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
- */
-function isHostObject(value) {
-  // Many host objects are `Object` objects that can coerce to strings
-  // despite having improperly defined `toString` methods.
-  var result = false;
-  if (value != null && typeof value.toString != 'function') {
-    try {
-      result = !!(value + '');
-    } catch (e) {}
-  }
-  return result;
-}
-
-module.exports = isHostObject;

_listCacheClear.js

@@ -7,6 +7,7 @@
  */
 function listCacheClear() {
   this.__data__ = [];
+  this.size = 0;
 }
 
 module.exports = listCacheClear;

_listCacheDelete.js

@@ -28,6 +28,7 @@ function listCacheDelete(key) {
   } else {
     splice.call(data, index, 1);
   }
+  --this.size;
   return true;
 }
 

_listCacheSet.js

@@ -15,6 +15,7 @@ function listCacheSet(key, value) {
       index = assocIndexOf(data, key);
 
   if (index < 0) {
+    ++this.size;
     data.push([key, value]);
   } else {
     data[index][1] = value;

_mapCacheClear.js

@@ -10,6 +10,7 @@ var Hash = require('./_Hash'),
  * @memberOf MapCache
  */
 function mapCacheClear() {
+  this.size = 0;
   this.__data__ = {
     'hash': new Hash,
     'map': new (Map || ListCache),

_mapCacheDelete.js

@@ -10,7 +10,9 @@ var getMapData = require('./_getMapData');
  * @returns {boolean} Returns `true` if the entry was removed, else `false`.
  */
 function mapCacheDelete(key) {
-  return getMapData(this, key)['delete'](key);
+  var result = getMapData(this, key)['delete'](key);
+  this.size -= result ? 1 : 0;
+  return result;
 }
 
 module.exports = mapCacheDelete;

_mapCacheSet.js

@@ -11,7 +11,11 @@ var getMapData = require('./_getMapData');
  * @returns {Object} Returns the map cache instance.
  */
 function mapCacheSet(key, value) {
-  getMapData(this, key).set(key, value);
+  var data = getMapData(this, key),
+      size = data.size;
+
+  data.set(key, value);
+  this.size += data.size == size ? 0 : 1;
   return this;
 }
 

_memoizeCapped.js

@@ -0,0 +1,26 @@
+var memoize = require('./memoize');
+
+/** Used as the maximum memoize cache size. */
+var MAX_MEMOIZE_SIZE = 500;
+
+/**
+ * A specialized version of `_.memoize` which clears the memoized function's
+ * cache when it exceeds `MAX_MEMOIZE_SIZE`.
+ *
+ * @private
+ * @param {Function} func The function to have its output memoized.
+ * @returns {Function} Returns the new memoized function.
+ */
+function memoizeCapped(func) {
+  var result = memoize(func, function(key) {
+    if (cache.size === MAX_MEMOIZE_SIZE) {
+      cache.clear();
+    }
+    return key;
+  });
+
+  var cache = result.cache;
+  return result;
+}
+
+module.exports = memoizeCapped;

_nativeDefineProperty.js

@@ -0,0 +1,6 @@
+var getNative = require('./_getNative');
+
+/* Built-in method references that are verified to be native. */
+var nativeDefineProperty = getNative(Object, 'defineProperty');
+
+module.exports = nativeDefineProperty;

_overRest.js

@@ -0,0 +1,36 @@
+var apply = require('./_apply');
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeMax = Math.max;
+
+/**
+ * A specialized version of `baseRest` which transforms the rest array.
+ *
+ * @private
+ * @param {Function} func The function to apply a rest parameter to.
+ * @param {number} [start=func.length-1] The start position of the rest parameter.
+ * @param {Function} transform The rest array transform.
+ * @returns {Function} Returns the new function.
+ */
+function overRest(func, start, transform) {
+  start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
+  return function() {
+    var args = arguments,
+        index = -1,
+        length = nativeMax(args.length - start, 0),
+        array = Array(length);
+
+    while (++index < length) {
+      array[index] = args[start + index];
+    }
+    index = -1;
+    var otherArgs = Array(start + 1);
+    while (++index < start) {
+      otherArgs[index] = args[index];
+    }
+    otherArgs[start] = transform(array);
+    return apply(func, this, otherArgs);
+  };
+}
+
+module.exports = overRest;

_setData.js

@@ -1,9 +1,5 @@
 var baseSetData = require('./_baseSetData'),
-    now = require('./now');
-
-/** Used to detect hot functions by number of calls within a span of milliseconds. */
-var HOT_COUNT = 150,
-    HOT_SPAN = 16;
+    shortOut = require('./_shortOut');
 
 /**
  * Sets metadata for `func`.
@@ -19,24 +15,6 @@ var HOT_COUNT = 150,
  * @param {*} data The metadata.
  * @returns {Function} Returns `func`.
  */
-var setData = (function() {
-  var count = 0,
-      lastCalled = 0;
-
-  return function(key, value) {
-    var stamp = now(),
-        remaining = HOT_SPAN - (stamp - lastCalled);
-
-    lastCalled = stamp;
-    if (remaining > 0) {
-      if (++count >= HOT_COUNT) {
-        return key;
-      }
-    } else {
-      count = 0;
-    }
-    return baseSetData(key, value);
-  };
-}());
+var setData = shortOut(baseSetData);
 
 module.exports = setData;

_setToString.js

@@ -0,0 +1,14 @@
+var baseSetToString = require('./_baseSetToString'),
+    shortOut = require('./_shortOut');
+
+/**
+ * Sets the `toString` method of `func` to return `string`.
+ *
+ * @private
+ * @param {Function} func The function to modify.
+ * @param {Function} string The `toString` result.
+ * @returns {Function} Returns `func`.
+ */
+var setToString = shortOut(baseSetToString);
+
+module.exports = setToString;

_setWrapToString.js

@@ -1,8 +1,6 @@
-var constant = require('./constant'),
-    defineProperty = require('./_defineProperty'),
-    getWrapDetails = require('./_getWrapDetails'),
-    identity = require('./identity'),
+var getWrapDetails = require('./_getWrapDetails'),
     insertWrapDetails = require('./_insertWrapDetails'),
+    setToString = require('./_setToString'),
     updateWrapDetails = require('./_updateWrapDetails');
 
 /**
@@ -15,13 +13,9 @@ var constant = require('./constant'),
  * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
  * @returns {Function} Returns `wrapper`.
  */
-var setWrapToString = !defineProperty ? identity : function(wrapper, reference, bitmask) {
+function setWrapToString(wrapper, reference, bitmask) {
   var source = (reference + '');
-  return defineProperty(wrapper, 'toString', {
-    'configurable': true,
-    'enumerable': false,
-    'value': constant(insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)))
-  });
-};
+  return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
+}
 
 module.exports = setWrapToString;

_shortOut.js

@@ -0,0 +1,37 @@
+/** Used to detect hot functions by number of calls within a span of milliseconds. */
+var HOT_COUNT = 500,
+    HOT_SPAN = 16;
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeNow = Date.now;
+
+/**
+ * Creates a function that'll short out and invoke `identity` instead
+ * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
+ * milliseconds.
+ *
+ * @private
+ * @param {Function} func The function to restrict.
+ * @returns {Function} Returns the new shortable function.
+ */
+function shortOut(func) {
+  var count = 0,
+      lastCalled = 0;
+
+  return function() {
+    var stamp = nativeNow(),
+        remaining = HOT_SPAN - (stamp - lastCalled);
+
+    lastCalled = stamp;
+    if (remaining > 0) {
+      if (++count >= HOT_COUNT) {
+        return arguments[0];
+      }
+    } else {
+      count = 0;
+    }
+    return func.apply(undefined, arguments);
+  };
+}
+
+module.exports = shortOut;

_shuffleSelf.js

@@ -0,0 +1,29 @@
+var baseClamp = require('./_baseClamp'),
+    baseRandom = require('./_baseRandom');
+
+/**
+ * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
+ *
+ * @private
+ * @param {Array} array The array to shuffle.
+ * @param {number} [size=array.length] The size of `array`.
+ * @returns {Array} Returns `array`.
+ */
+function shuffleSelf(array, size) {
+  var index = -1,
+      length = array.length,
+      lastIndex = length - 1;
+
+  size = size === undefined ? length : baseClamp(size, 0, length);
+  while (++index < size) {
+    var rand = baseRandom(index, lastIndex),
+        value = array[rand];
+
+    array[rand] = array[index];
+    array[index] = value;
+  }
+  array.length = size;
+  return array;
+}
+
+module.exports = shuffleSelf;

_stackClear.js

@@ -9,6 +9,7 @@ var ListCache = require('./_ListCache');
  */
 function stackClear() {
   this.__data__ = new ListCache;
+  this.size = 0;
 }
 
 module.exports = stackClear;

_stackDelete.js

@@ -8,7 +8,11 @@
  * @returns {boolean} Returns `true` if the entry was removed, else `false`.
  */
 function stackDelete(key) {
-  return this.__data__['delete'](key);
+  var data = this.__data__,
+      result = data['delete'](key);
+
+  this.size = data.size;
+  return result;
 }
 
 module.exports = stackDelete;

_stackSet.js

@@ -16,16 +16,18 @@ var LARGE_ARRAY_SIZE = 200;
  * @returns {Object} Returns the stack cache instance.
  */
 function stackSet(key, value) {
-  var cache = this.__data__;
-  if (cache instanceof ListCache) {
-    var pairs = cache.__data__;
+  var data = this.__data__;
+  if (data instanceof ListCache) {
+    var pairs = data.__data__;
     if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
       pairs.push([key, value]);
+      this.size = ++data.size;
       return this;
     }
-    cache = this.__data__ = new MapCache(pairs);
+    data = this.__data__ = new MapCache(pairs);
   }
-  cache.set(key, value);
+  data.set(key, value);
+  this.size = data.size;
   return this;
 }
 

_strictIndexOf.js

@@ -0,0 +1,23 @@
+/**
+ * A specialized version of `_.indexOf` which performs strict equality
+ * comparisons of values, i.e. `===`.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {*} value The value to search for.
+ * @param {number} fromIndex The index to search from.
+ * @returns {number} Returns the index of the matched value, else `-1`.
+ */
+function strictIndexOf(array, value, fromIndex) {
+  var index = fromIndex - 1,
+      length = array.length;
+
+  while (++index < length) {
+    if (array[index] === value) {
+      return index;
+    }
+  }
+  return -1;
+}
+
+module.exports = strictIndexOf;

_strictLastIndexOf.js

@@ -0,0 +1,21 @@
+/**
+ * A specialized version of `_.lastIndexOf` which performs strict equality
+ * comparisons of values, i.e. `===`.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {*} value The value to search for.
+ * @param {number} fromIndex The index to search from.
+ * @returns {number} Returns the index of the matched value, else `-1`.
+ */
+function strictLastIndexOf(array, value, fromIndex) {
+  var index = fromIndex + 1;
+  while (index--) {
+    if (array[index] === value) {
+      return index;
+    }
+  }
+  return index;
+}
+
+module.exports = strictLastIndexOf;

_stringSize.js

@@ -1,30 +1,6 @@
-var reHasComplexSymbol = require('./_reHasComplexSymbol');
-
-/** Used to compose unicode character classes. */
-var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
-    rsVarRange = '\\ufe0e\\ufe0f';
-
-/** Used to compose unicode capture groups. */
-var rsAstral = '[' + rsAstralRange + ']',
-    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
-    rsFitz = '\\ud83c[\\udffb-\\udfff]',
-    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
-    rsNonAstral = '[^' + rsAstralRange + ']',
-    rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
-    rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
-    rsZWJ = '\\u200d';
-
-/** Used to compose unicode regexes. */
-var reOptMod = rsModifier + '?',
-    rsOptVar = '[' + rsVarRange + ']?',
-    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
-    rsSeq = rsOptVar + reOptMod + rsOptJoin,
-    rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
-
-/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
-var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+var asciiSize = require('./_asciiSize'),
+    hasUnicode = require('./_hasUnicode'),
+    unicodeSize = require('./_unicodeSize');
 
 /**
  * Gets the number of symbols in `string`.
@@ -34,14 +10,9 @@ var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq,
  * @returns {number} Returns the string size.
  */
 function stringSize(string) {
-  if (!(string && reHasComplexSymbol.test(string))) {
-    return string.length;
-  }
-  var result = reComplexSymbol.lastIndex = 0;
-  while (reComplexSymbol.test(string)) {
-    result++;
-  }
-  return result;
+  return hasUnicode(string)
+    ? unicodeSize(string)
+    : asciiSize(string);
 }
 
 module.exports = stringSize;

_stringToArray.js

@@ -1,28 +1,6 @@
-/** Used to compose unicode character classes. */
-var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
-    rsVarRange = '\\ufe0e\\ufe0f';
-
-/** Used to compose unicode capture groups. */
-var rsAstral = '[' + rsAstralRange + ']',
-    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
-    rsFitz = '\\ud83c[\\udffb-\\udfff]',
-    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
-    rsNonAstral = '[^' + rsAstralRange + ']',
-    rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
-    rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
-    rsZWJ = '\\u200d';
-
-/** Used to compose unicode regexes. */
-var reOptMod = rsModifier + '?',
-    rsOptVar = '[' + rsVarRange + ']?',
-    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
-    rsSeq = rsOptVar + reOptMod + rsOptJoin,
-    rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
-
-/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
-var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+var asciiToArray = require('./_asciiToArray'),
+    hasUnicode = require('./_hasUnicode'),
+    unicodeToArray = require('./_unicodeToArray');
 
 /**
  * Converts `string` to an array.
@@ -32,7 +10,9 @@ var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq,
  * @returns {Array} Returns the converted array.
  */
 function stringToArray(string) {
-  return string.match(reComplexSymbol);
+  return hasUnicode(string)
+    ? unicodeToArray(string)
+    : asciiToArray(string);
 }
 
 module.exports = stringToArray;

_stringToPath.js

@@ -1,4 +1,4 @@
-var memoize = require('./memoize'),
+var memoizeCapped = require('./_memoizeCapped'),
     toString = require('./toString');
 
 /** Used to match property names within property paths. */
@@ -15,7 +15,7 @@ var reEscapeChar = /\\(\\)?/g;
  * @param {string} string The string to convert.
  * @returns {Array} Returns the property path array.
  */
-var stringToPath = memoize(function(string) {
+var stringToPath = memoizeCapped(function(string) {
   string = toString(string);
 
   var result = [];

_toSource.js

@@ -1,5 +1,8 @@
+/** Used for built-in method references. */
+var funcProto = Function.prototype;
+
 /** Used to resolve the decompiled source of functions. */
-var funcToString = Function.prototype.toString;
+var funcToString = funcProto.toString;
 
 /**
  * Converts `func` to its source code.

_unescapeHtmlChar.js

@@ -6,8 +6,7 @@ var htmlUnescapes = {
   '&lt;': '<',
   '&gt;': '>',
   '&quot;': '"',
-  '&#39;': "'",
-  '&#96;': '`'
+  '&#39;': "'"
 };
 
 /**

_unicodeSize.js

@@ -0,0 +1,42 @@
+/** Used to compose unicode character classes. */
+var rsAstralRange = '\\ud800-\\udfff',
+    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsVarRange = '\\ufe0e\\ufe0f';
+
+/** Used to compose unicode capture groups. */
+var rsAstral = '[' + rsAstralRange + ']',
+    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsFitz = '\\ud83c[\\udffb-\\udfff]',
+    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+    rsNonAstral = '[^' + rsAstralRange + ']',
+    rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+    rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+    rsZWJ = '\\u200d';
+
+/** Used to compose unicode regexes. */
+var reOptMod = rsModifier + '?',
+    rsOptVar = '[' + rsVarRange + ']?',
+    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+    rsSeq = rsOptVar + reOptMod + rsOptJoin,
+    rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
+
+/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
+var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+
+/**
+ * Gets the size of a Unicode `string`.
+ *
+ * @private
+ * @param {string} string The string inspect.
+ * @returns {number} Returns the string size.
+ */
+function unicodeSize(string) {
+  var result = reUnicode.lastIndex = 0;
+  while (reUnicode.test(string)) {
+    ++result;
+  }
+  return result;
+}
+
+module.exports = unicodeSize;

_unicodeToArray.js

@@ -0,0 +1,38 @@
+/** Used to compose unicode character classes. */
+var rsAstralRange = '\\ud800-\\udfff',
+    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsVarRange = '\\ufe0e\\ufe0f';
+
+/** Used to compose unicode capture groups. */
+var rsAstral = '[' + rsAstralRange + ']',
+    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsFitz = '\\ud83c[\\udffb-\\udfff]',
+    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+    rsNonAstral = '[^' + rsAstralRange + ']',
+    rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+    rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+    rsZWJ = '\\u200d';
+
+/** Used to compose unicode regexes. */
+var reOptMod = rsModifier + '?',
+    rsOptVar = '[' + rsVarRange + ']?',
+    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+    rsSeq = rsOptVar + reOptMod + rsOptJoin,
+    rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
+
+/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
+var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+
+/**
+ * Converts a Unicode `string` to an array.
+ *
+ * @private
+ * @param {string} string The string to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function unicodeToArray(string) {
+  return string.match(reUnicode) || [];
+}
+
+module.exports = unicodeToArray;

_unicodeWords.js

@@ -0,0 +1,63 @@
+/** Used to compose unicode character classes. */
+var rsAstralRange = '\\ud800-\\udfff',
+    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsDingbatRange = '\\u2700-\\u27bf',
+    rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
+    rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
+    rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
+    rsPunctuationRange = '\\u2000-\\u206f',
+    rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
+    rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
+    rsVarRange = '\\ufe0e\\ufe0f',
+    rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
+
+/** Used to compose unicode capture groups. */
+var rsApos = "['\u2019]",
+    rsBreak = '[' + rsBreakRange + ']',
+    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsDigits = '\\d+',
+    rsDingbat = '[' + rsDingbatRange + ']',
+    rsLower = '[' + rsLowerRange + ']',
+    rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
+    rsFitz = '\\ud83c[\\udffb-\\udfff]',
+    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+    rsNonAstral = '[^' + rsAstralRange + ']',
+    rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+    rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+    rsUpper = '[' + rsUpperRange + ']',
+    rsZWJ = '\\u200d';
+
+/** Used to compose unicode regexes. */
+var rsLowerMisc = '(?:' + rsLower + '|' + rsMisc + ')',
+    rsUpperMisc = '(?:' + rsUpper + '|' + rsMisc + ')',
+    rsOptLowerContr = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
+    rsOptUpperContr = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
+    reOptMod = rsModifier + '?',
+    rsOptVar = '[' + rsVarRange + ']?',
+    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+    rsSeq = rsOptVar + reOptMod + rsOptJoin,
+    rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq;
+
+/** Used to match complex or compound words. */
+var reUnicodeWord = RegExp([
+  rsUpper + '?' + rsLower + '+' + rsOptLowerContr + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
+  rsUpperMisc + '+' + rsOptUpperContr + '(?=' + [rsBreak, rsUpper + rsLowerMisc, '$'].join('|') + ')',
+  rsUpper + '?' + rsLowerMisc + '+' + rsOptLowerContr,
+  rsUpper + '+' + rsOptUpperContr,
+  rsDigits,
+  rsEmoji
+].join('|'), 'g');
+
+/**
+ * Splits a Unicode `string` into an array of its words.
+ *
+ * @private
+ * @param {string} The string to inspect.
+ * @returns {Array} Returns the words of `string`.
+ */
+function unicodeWords(string) {
+  return string.match(reUnicodeWord) || [];
+}
+
+module.exports = unicodeWords;

after.js

@@ -1,6 +1,6 @@
 var toInteger = require('./toInteger');
 
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /**

assign.js

@@ -11,12 +11,6 @@ var objectProto = Object.prototype;
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;
 
-/** Built-in value references. */
-var propertyIsEnumerable = objectProto.propertyIsEnumerable;
-
-/** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */
-var nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');
-
 /**
  * Assigns own enumerable string keyed properties of source objects to the
  * destination object. Source objects are applied from left to right.
@@ -50,7 +44,7 @@ var nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');
  * // => { 'a': 1, 'c': 3 }
  */
 var assign = createAssigner(function(object, source) {
-  if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) {
+  if (isPrototype(source) || isArrayLike(source)) {
     copyObject(source, keys(source), object);
     return;
   }

at.js

@@ -1,6 +1,5 @@
 var baseAt = require('./_baseAt'),
-    baseFlatten = require('./_baseFlatten'),
-    baseRest = require('./_baseRest');
+    flatRest = require('./_flatRest');
 
 /**
  * Creates an array of values corresponding to `paths` of `object`.
@@ -19,8 +18,6 @@ var baseAt = require('./_baseAt'),
  * _.at(object, ['a[0].b.c', 'a[1]']);
  * // => [3, 4]
  */
-var at = baseRest(function(object, paths) {
-  return baseAt(object, baseFlatten(paths, 1));
-});
+var at = flatRest(baseAt);
 
 module.exports = at;

before.js

@@ -1,6 +1,6 @@
 var toInteger = require('./toInteger');
 
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /**

bindAll.js

@@ -1,7 +1,7 @@
 var arrayEach = require('./_arrayEach'),
-    baseFlatten = require('./_baseFlatten'),
-    baseRest = require('./_baseRest'),
+    baseAssignValue = require('./_baseAssignValue'),
     bind = require('./bind'),
+    flatRest = require('./_flatRest'),
     toKey = require('./_toKey');
 
 /**
@@ -30,10 +30,10 @@ var arrayEach = require('./_arrayEach'),
  * jQuery(element).on('click', view.click);
  * // => Logs 'clicked docs' when clicked.
  */
-var bindAll = baseRest(function(object, methodNames) {
-  arrayEach(baseFlatten(methodNames, 1), function(key) {
+var bindAll = flatRest(function(object, methodNames) {
+  arrayEach(methodNames, function(key) {
     key = toKey(key);
-    object[key] = bind(object[key], object);
+    baseAssignValue(object, key, bind(object[key], object));
   });
   return object;
 });

concat.js

@@ -26,17 +26,18 @@ var arrayPush = require('./_arrayPush'),
  * // => [1]
  */
 function concat() {
-  var length = arguments.length,
-      args = Array(length ? length - 1 : 0),
+  var length = arguments.length;
+  if (!length) {
+    return [];
+  }
+  var args = Array(length - 1),
       array = arguments[0],
       index = length;
 
   while (index--) {
     args[index - 1] = arguments[index];
   }
-  return length
-    ? arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1))
-    : [];
+  return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
 }
 
 module.exports = concat;

cond.js

@@ -3,7 +3,7 @@ var apply = require('./_apply'),
     baseIteratee = require('./_baseIteratee'),
     baseRest = require('./_baseRest');
 
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /**

core.js

@@ -13,9 +13,9 @@
   var undefined;
 
   /** Used as the semantic version number. */
-  var VERSION = '4.14.2';
+  var VERSION = '4.16.2';
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /** Used to compose bitmasks for function metadata. */
@@ -44,7 +44,7 @@
       stringTag = '[object String]';
 
   /** Used to match HTML entities and HTML characters. */
-  var reUnescapedHtml = /[&<>"'`]/g,
+  var reUnescapedHtml = /[&<>"']/g,
       reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
 
   /** Used to map characters to HTML entities. */
@@ -53,8 +53,7 @@
     '<': '&lt;',
     '>': '&gt;',
     '"': '&quot;',
-    "'": '&#39;',
-    '`': '&#96;'
+    "'": '&#39;'
   };
 
   /** Detect free variable `global` from Node.js. */
@@ -92,7 +91,7 @@
    * support for iteratee shorthands.
    *
    * @private
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {Function} predicate The function invoked per iteration.
    * @param {number} fromIndex The index to search from.
    * @param {boolean} [fromRight] Specify iterating from right to left.
@@ -183,17 +182,6 @@
    */
   var escapeHtmlChar = basePropertyOf(htmlEscapes);
 
-  /**
-   * Checks if `value` is a host object in IE < 9.
-   *
-   * @private
-   * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
-   */
-  function isHostObject() {
-    return false;
-  }
-
   /**
    * Creates a unary function that invokes `func` with its argument transformed.
    *
@@ -364,6 +352,30 @@
       : new LodashWrapper(value);
   }
 
+  /**
+   * The base implementation of `_.create` without support for assigning
+   * properties to the created object.
+   *
+   * @private
+   * @param {Object} proto The object to inherit from.
+   * @returns {Object} Returns the new object.
+   */
+  var baseCreate = (function() {
+    function object() {}
+    return function(proto) {
+      if (!isObject(proto)) {
+        return {};
+      }
+      if (objectCreate) {
+        return objectCreate(proto);
+      }
+      object.prototype = prototype;
+      var result = new object;
+      object.prototype = undefined;
+      return result;
+    };
+  }());
+
   /**
    * The base constructor for creating `lodash` wrapper objects.
    *
@@ -414,20 +426,21 @@
     var objValue = object[key];
     if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
         (value === undefined && !(key in object))) {
-      object[key] = value;
+      baseAssignValue(object, key, value);
     }
   }
 
   /**
-   * The base implementation of `_.create` without support for assigning
-   * properties to the created object.
+   * The base implementation of `assignValue` and `assignMergeValue` without
+   * value checks.
    *
    * @private
-   * @param {Object} prototype The object to inherit from.
-   * @returns {Object} Returns the new object.
+   * @param {Object} object The object to modify.
+   * @param {string} key The key of the property to assign.
+   * @param {*} value The value to assign.
    */
-  function baseCreate(proto) {
-    return isObject(proto) ? objectCreate(proto) : {};
+  function baseAssignValue(object, key, value) {
+    object[key] = value;
   }
 
   /**
@@ -674,8 +687,8 @@
       othTag = objectToString.call(other);
       othTag = othTag == argsTag ? objectTag : othTag;
     }
-    var objIsObj = objTag == objectTag && !isHostObject(object),
-        othIsObj = othTag == objectTag && !isHostObject(other),
+    var objIsObj = objTag == objectTag,
+        othIsObj = othTag == objectTag,
         isSameTag = objTag == othTag;
 
     stack || (stack = []);
@@ -832,24 +845,7 @@
    * @returns {Function} Returns the new function.
    */
   function baseRest(func, start) {
-    start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
-    return function() {
-      var args = arguments,
-          index = -1,
-          length = nativeMax(args.length - start, 0),
-          array = Array(length);
-
-      while (++index < length) {
-        array[index] = args[start + index];
-      }
-      index = -1;
-      var otherArgs = Array(start + 1);
-      while (++index < start) {
-        otherArgs[index] = args[index];
-      }
-      otherArgs[start] = array;
-      return func.apply(this, otherArgs);
-    };
+    return setToString(overRest(func, start, identity), func + '');
   }
 
   /**
@@ -979,6 +975,7 @@
    * @returns {Object} Returns `object`.
    */
   function copyObject(source, props, object, customizer) {
+    var isNew = !object;
     object || (object = {});
 
     var index = -1,
@@ -991,7 +988,14 @@
         ? customizer(object[key], source[key], key, object, source)
         : undefined;
 
-      assignValue(object, key, newValue === undefined ? source[key] : newValue);
+      if (newValue === undefined) {
+        newValue = source[key];
+      }
+      if (isNew) {
+        baseAssignValue(object, key, newValue);
+      } else {
+        assignValue(object, key, newValue);
+      }
     }
     return object;
   }
@@ -1326,6 +1330,17 @@
     return result;
   }
 
+  /**
+   * A specialized version of `baseRest` which flattens the rest array.
+   *
+   * @private
+   * @param {Function} func The function to apply a rest parameter to.
+   * @returns {Function} Returns the new function.
+   */
+  function flatRest(func) {
+    return setToString(overRest(func, undefined, flatten), func + '');
+  }
+
   /**
    * Checks if `value` is a flattenable `arguments` object or array.
    *
@@ -1356,6 +1371,46 @@
     return result;
   }
 
+  /**
+   * A specialized version of `baseRest` which transforms the rest array.
+   *
+   * @private
+   * @param {Function} func The function to apply a rest parameter to.
+   * @param {number} [start=func.length-1] The start position of the rest parameter.
+   * @param {Function} transform The rest array transform.
+   * @returns {Function} Returns the new function.
+   */
+  function overRest(func, start, transform) {
+    start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
+    return function() {
+      var args = arguments,
+          index = -1,
+          length = nativeMax(args.length - start, 0),
+          array = Array(length);
+
+      while (++index < length) {
+        array[index] = args[start + index];
+      }
+      index = -1;
+      var otherArgs = Array(start + 1);
+      while (++index < start) {
+        otherArgs[index] = args[index];
+      }
+      otherArgs[start] = transform(array);
+      return func.apply(this, otherArgs);
+    };
+  }
+
+  /**
+   * Sets the `toString` method of `func` to return `string`.
+   *
+   * @private
+   * @param {Function} func The function to modify.
+   * @param {Function} string The `toString` result.
+   * @returns {Function} Returns `func`.
+   */
+  var setToString = identity;
+
   /**
    * Converts `value` to a string key if it's not a string or symbol.
    *
@@ -1409,17 +1464,18 @@
    * // => [1]
    */
   function concat() {
-    var length = arguments.length,
-        args = Array(length ? length - 1 : 0),
+    var length = arguments.length;
+    if (!length) {
+      return [];
+    }
+    var args = Array(length - 1),
         array = arguments[0],
         index = length;
 
     while (index--) {
       args[index - 1] = arguments[index];
     }
-    return length
-      ? arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1))
-      : [];
+    return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
   }
 
   /**
@@ -1430,7 +1486,7 @@
    * @memberOf _
    * @since 1.1.0
    * @category Array
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {Function} [predicate=_.identity]
    *  The function invoked per iteration.
    * @param {number} [fromIndex=0] The index to search from.
@@ -1540,7 +1596,7 @@
    * @memberOf _
    * @since 0.1.0
    * @category Array
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} [fromIndex=0] The index to search from.
    * @returns {number} Returns the index of the matched value, else `-1`.
@@ -1855,7 +1911,7 @@
    * @memberOf _
    * @since 0.1.0
    * @category Collection
-   * @param {Array|Object} collection The collection to search.
+   * @param {Array|Object} collection The collection to inspect.
    * @param {Function} [predicate=_.identity]
    *  The function invoked per iteration.
    * @param {number} [fromIndex=0] The index to search from.
@@ -1905,7 +1961,7 @@
    * @see _.forEachRight
    * @example
    *
-   * _([1, 2]).forEach(function(value) {
+   * _.forEach([1, 2], function(value) {
    *   console.log(value);
    * });
    * // => Logs `1` then `2`.
@@ -2014,7 +2070,7 @@
    * @memberOf _
    * @since 0.1.0
    * @category Collection
-   * @param {Array|Object} collection The collection to inspect.
+   * @param {Array|Object|string} collection The collection to inspect.
    * @returns {number} Returns the collection size.
    * @example
    *
@@ -2099,16 +2155,11 @@
    *   { 'user': 'barney', 'age': 34 }
    * ];
    *
-   * _.sortBy(users, function(o) { return o.user; });
+   * _.sortBy(users, [function(o) { return o.user; }]);
    * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
    *
    * _.sortBy(users, ['user', 'age']);
    * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
-   *
-   * _.sortBy(users, 'user', function(o) {
-   *   return Math.floor(o.age / 10);
-   * });
-   * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
    */
   function sortBy(collection, iteratee) {
     var index = 0;
@@ -2212,7 +2263,7 @@
    * _.defer(function(text) {
    *   console.log(text);
    * }, 'deferred');
-   * // => Logs 'deferred' after one or more milliseconds.
+   * // => Logs 'deferred' after one millisecond.
    */
   var defer = baseRest(function(func, args) {
     return baseDelay(func, 1, args);
@@ -2383,7 +2434,7 @@
    * // => false
    */
   function isArguments(value) {
-    // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.
+    // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
     return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
       (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
   }
@@ -2635,8 +2686,7 @@
    */
   function isFunction(value) {
     // The use of `Object#toString` avoids issues with the `typeof` operator
-    // in Safari 8 which returns 'object' for typed array and weak map constructors,
-    // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.
+    // in Safari 8-9 which returns 'object' for typed array and other constructors.
     var tag = isObject(value) ? objectToString.call(value) : '';
     return tag == funcTag || tag == genTag;
   }
@@ -2699,7 +2749,7 @@
    */
   function isObject(value) {
     var type = typeof value;
-    return !!value && (type == 'object' || type == 'function');
+    return value != null && (type == 'object' || type == 'function');
   }
 
   /**
@@ -2727,7 +2777,7 @@
    * // => false
    */
   function isObjectLike(value) {
-    return !!value && typeof value == 'object';
+    return value != null && typeof value == 'object';
   }
 
   /**
@@ -3264,8 +3314,8 @@
    * _.pick(object, ['a', 'c']);
    * // => { 'a': 1, 'c': 3 }
    */
-  var pick = baseRest(function(object, props) {
-    return object == null ? {} : basePick(object, baseMap(baseFlatten(props, 1), toKey));
+  var pick = flatRest(function(object, props) {
+    return object == null ? {} : basePick(object, baseMap(props, toKey));
   });
 
   /**
@@ -3338,8 +3388,8 @@
   /*------------------------------------------------------------------------*/
 
   /**
-   * Converts the characters "&", "<", ">", '"', "'", and "\`" in `string` to
-   * their corresponding HTML entities.
+   * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
+   * corresponding HTML entities.
    *
    * **Note:** No other characters are escaped. To escape additional
    * characters use a third-party library like [_he_](https://mths.be/he).
@@ -3350,12 +3400,6 @@
    * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
    * (under "semi-related fun fact") for more details.
    *
-   * Backticks are escaped because in IE < 9, they can break out of
-   * attribute values or HTML comments. See [#59](https://html5sec.org/#59),
-   * [#102](https://html5sec.org/#102), [#108](https://html5sec.org/#108), and
-   * [#133](https://html5sec.org/#133) of the
-   * [HTML5 Security Cheatsheet](https://html5sec.org/) for more details.
-   *
    * When working with HTML you should always
    * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
    * XSS vectors.

core.min.js

@@ -3,26 +3,27 @@
  * lodash (Custom Build) /license | Underscore.js 1.8.3 underscorejs.org/LICENSE
  * Build: `lodash core -o ./dist/lodash.core.js`
  */
-;(function(){function n(n,t){return n.push.apply(n,t),n}function t(n){return function(t){return null==t?Z:t[n]}}function r(n,t,r,e,u){return u(n,function(n,u,o){r=e?(e=false,n):t(r,n,u,o)}),r}function e(n,t){return d(t,function(t){return n[t]})}function u(n){return n instanceof o?n:new o(n)}function o(n,t){this.__wrapped__=n,this.__actions__=[],this.__chain__=!!t}function i(n,t,r,e){return n===Z||J(n,an[r])&&!ln.call(e,r)?t:n}function c(n){return V(n)?vn(n):{}}function f(n,t,r){if(typeof n!="function")throw new TypeError("Expected a function");
-return setTimeout(function(){n.apply(Z,r)},t)}function a(n,t){var r=true;return jn(n,function(n,e,u){return r=!!t(n,e,u)}),r}function l(n,t,r){for(var e=-1,u=n.length;++e<u;){var o=n[e],i=t(o);if(null!=i&&(c===Z?i===i:r(i,c)))var c=i,f=o}return f}function p(n,t){var r=[];return jn(n,function(n,e,u){t(n,e,u)&&r.push(n)}),r}function s(t,r,e,u,o){var i=-1,c=t.length;for(e||(e=D),o||(o=[]);++i<c;){var f=t[i];0<r&&e(f)?1<r?s(f,r-1,e,u,o):n(o,f):u||(o[o.length]=f)}return o}function h(n,t){return n&&dn(n,t,Rn);
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countBy.js

@@ -1,4 +1,5 @@
-var createAggregator = require('./_createAggregator');
+var baseAssignValue = require('./_baseAssignValue'),
+    createAggregator = require('./_createAggregator');
 
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
@@ -30,7 +31,11 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * // => { '3': 2, '5': 1 }
  */
 var countBy = createAggregator(function(result, value, key) {
-  hasOwnProperty.call(result, key) ? ++result[key] : (result[key] = 1);
+  if (hasOwnProperty.call(result, key)) {
+    ++result[key];
+  } else {
+    baseAssignValue(result, key, 1);
+  }
 });
 
 module.exports = countBy;

debounce.js

@@ -2,7 +2,7 @@ var isObject = require('./isObject'),
     now = require('./now'),
     toNumber = require('./toNumber');
 
-/** Used as the `TypeError` message for "Functions" methods. */
+/** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /* Built-in method references for those with the same name as other `lodash` methods. */

deburr.js

@@ -1,8 +1,8 @@
 var deburrLetter = require('./_deburrLetter'),
     toString = require('./toString');
 
-/** Used to match latin-1 supplementary letters (excluding mathematical operators). */
-var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g;
+/** Used to match Latin Unicode letters (excluding mathematical operators). */
+var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
 
 /** Used to compose unicode character classes. */
 var rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
@@ -19,8 +19,9 @@ var reComboMark = RegExp(rsCombo, 'g');
 
 /**
  * Deburrs `string` by converting
- * [latin-1 supplementary letters](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
- * to basic latin letters and removing
+ * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
+ * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
+ * letters to basic Latin letters and removing
  * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
  *
  * @static
@@ -36,7 +37,7 @@ var reComboMark = RegExp(rsCombo, 'g');
  */
 function deburr(string) {
   string = toString(string);
-  return string && string.replace(reLatin1, deburrLetter).replace(reComboMark, '');
+  return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
 }
 
 module.exports = deburr;

defer.js

@@ -17,7 +17,7 @@ var baseDelay = require('./_baseDelay'),
  * _.defer(function(text) {
  *   console.log(text);
  * }, 'deferred');
- * // => Logs 'deferred' after one or more milliseconds.
+ * // => Logs 'deferred' after one millisecond.
  */
 var defer = baseRest(function(func, args) {
   return baseDelay(func, 1, args);

difference.js

@@ -6,8 +6,8 @@ var baseDifference = require('./_baseDifference'),
 /**
  * Creates an array of `array` values not included in the other given arrays
  * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
- * for equality comparisons. The order of result values is determined by the
- * order they occur in the first array.
+ * for equality comparisons. The order and references of result values are
+ * determined by the first array.
  *
  * **Note:** Unlike `_.pullAll`, this method returns a new array.
  *

differenceBy.js

@@ -8,8 +8,9 @@ var baseDifference = require('./_baseDifference'),
 /**
  * This method is like `_.difference` except that it accepts `iteratee` which
  * is invoked for each element of `array` and `values` to generate the criterion
- * by which they're compared. Result values are chosen from the first array.
- * The iteratee is invoked with one argument: (value).
+ * by which they're compared. The order and references of result values are
+ * determined by the first array. The iteratee is invoked with one argument:
+ * (value).
  *
  * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
  *

differenceWith.js

@@ -6,9 +6,9 @@ var baseDifference = require('./_baseDifference'),
 
 /**
  * This method is like `_.difference` except that it accepts `comparator`
- * which is invoked to compare elements of `array` to `values`. Result values
- * are chosen from the first array. The comparator is invoked with two arguments:
- * (arrVal, othVal).
+ * which is invoked to compare elements of `array` to `values`. The order and
+ * references of result values are determined by the first array. The comparator
+ * is invoked with two arguments: (arrVal, othVal).
  *
  * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
  *