Bump to v4.17.2.

LICENSE

@@ -1,4 +1,4 @@
-Copyright jQuery Foundation and other contributors <https://jquery.org/>
+Copyright JS Foundation and other contributors <https://js.foundation/>
 
 Based on Underscore.js, copyright Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>

README.md

@@ -1,4 +1,4 @@
-# lodash v4.16.2
+# lodash v4.17.2
 
 The [Lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules.
 
@@ -28,12 +28,12 @@ var at = require('lodash/at');
 var curryN = require('lodash/fp/curryN');
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.16.2-npm) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.17.2-npm) for more details.
 
 **Note:**<br>
 Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL.
 
 ## Support
 
-Tested in Chrome 52-53, Firefox 47-48, IE 11, Edge 14, Safari 9-10, Node.js 4-6, & PhantomJS 2.1.1.<br>
+Tested in Chrome 53-54, Firefox 48-49, IE 11, Edge 14, Safari 9-10, Node.js 6-7, & PhantomJS 2.1.1.<br>
 Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available.

_Hash.js

@@ -13,7 +13,7 @@ var hashClear = require('./_hashClear'),
  */
 function Hash(entries) {
   var index = -1,
-      length = entries ? entries.length : 0;
+      length = entries == null ? 0 : entries.length;
 
   this.clear();
   while (++index < length) {

_ListCache.js

@@ -13,7 +13,7 @@ var listCacheClear = require('./_listCacheClear'),
  */
 function ListCache(entries) {
   var index = -1,
-      length = entries ? entries.length : 0;
+      length = entries == null ? 0 : entries.length;
 
   this.clear();
   while (++index < length) {

_MapCache.js

@@ -13,7 +13,7 @@ var mapCacheClear = require('./_mapCacheClear'),
  */
 function MapCache(entries) {
   var index = -1,
-      length = entries ? entries.length : 0;
+      length = entries == null ? 0 : entries.length;
 
   this.clear();
   while (++index < length) {

_SetCache.js

@@ -12,7 +12,7 @@ var MapCache = require('./_MapCache'),
  */
 function SetCache(values) {
   var index = -1,
-      length = values ? values.length : 0;
+      length = values == null ? 0 : values.length;
 
   this.__data__ = new MapCache;
   while (++index < length) {

_arrayAggregator.js

@@ -10,7 +10,7 @@
  */
 function arrayAggregator(array, setter, iteratee, accumulator) {
   var index = -1,
-      length = array ? array.length : 0;
+      length = array == null ? 0 : array.length;
 
   while (++index < length) {
     var value = array[index];

_arrayEach.js

@@ -9,7 +9,7 @@
  */
 function arrayEach(array, iteratee) {
   var index = -1,
-      length = array ? array.length : 0;
+      length = array == null ? 0 : array.length;
 
   while (++index < length) {
     if (iteratee(array[index], index, array) === false) {

_arrayEachRight.js

@@ -8,7 +8,7 @@
  * @returns {Array} Returns `array`.
  */
 function arrayEachRight(array, iteratee) {
-  var length = array ? array.length : 0;
+  var length = array == null ? 0 : array.length;
 
   while (length--) {
     if (iteratee(array[length], length, array) === false) {

_arrayEvery.js

@@ -10,7 +10,7 @@
  */
 function arrayEvery(array, predicate) {
   var index = -1,
-      length = array ? array.length : 0;
+      length = array == null ? 0 : array.length;
 
   while (++index < length) {
     if (!predicate(array[index], index, array)) {

_arrayFilter.js

@@ -9,7 +9,7 @@
  */
 function arrayFilter(array, predicate) {
   var index = -1,
-      length = array ? array.length : 0,
+      length = array == null ? 0 : array.length,
       resIndex = 0,
       result = [];
 

_arrayIncludes.js

@@ -10,7 +10,7 @@ var baseIndexOf = require('./_baseIndexOf');
  * @returns {boolean} Returns `true` if `target` is found, else `false`.
  */
 function arrayIncludes(array, value) {
-  var length = array ? array.length : 0;
+  var length = array == null ? 0 : array.length;
   return !!length && baseIndexOf(array, value, 0) > -1;
 }
 

_arrayIncludesWith.js

@@ -9,7 +9,7 @@
  */
 function arrayIncludesWith(array, value, comparator) {
   var index = -1,
-      length = array ? array.length : 0;
+      length = array == null ? 0 : array.length;
 
   while (++index < length) {
     if (comparator(value, array[index])) {

_arrayLikeKeys.js

@@ -1,7 +1,9 @@
 var baseTimes = require('./_baseTimes'),
     isArguments = require('./isArguments'),
     isArray = require('./isArray'),
-    isIndex = require('./_isIndex');
+    isBuffer = require('./isBuffer'),
+    isIndex = require('./_isIndex'),
+    isTypedArray = require('./isTypedArray');
 
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
@@ -18,18 +20,26 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @returns {Array} Returns the array of property names.
  */
 function arrayLikeKeys(value, inherited) {
-  // 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)
-    : [];
-
-  var length = result.length,
-      skipIndexes = !!length;
+  var isArr = isArray(value),
+      isArg = !isArr && isArguments(value),
+      isBuff = !isArr && !isArg && isBuffer(value),
+      isType = !isArr && !isArg && !isBuff && isTypedArray(value),
+      skipIndexes = isArr || isArg || isBuff || isType,
+      result = skipIndexes ? baseTimes(value.length, String) : [],
+      length = result.length;
 
   for (var key in value) {
     if ((inherited || hasOwnProperty.call(value, key)) &&
-        !(skipIndexes && (key == 'length' || isIndex(key, length)))) {
+        !(skipIndexes && (
+           // Safari 9 has enumerable `arguments.length` in strict mode.
+           key == 'length' ||
+           // Node.js 0.10 has enumerable non-index properties on buffers.
+           (isBuff && (key == 'offset' || key == 'parent')) ||
+           // PhantomJS 2 has enumerable non-index properties on typed arrays.
+           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
+           // Skip index properties.
+           isIndex(key, length)
+        ))) {
       result.push(key);
     }
   }

_arrayMap.js

@@ -9,7 +9,7 @@
  */
 function arrayMap(array, iteratee) {
   var index = -1,
-      length = array ? array.length : 0,
+      length = array == null ? 0 : array.length,
       result = Array(length);
 
   while (++index < length) {

_arrayReduce.js

@@ -12,7 +12,7 @@
  */
 function arrayReduce(array, iteratee, accumulator, initAccum) {
   var index = -1,
-      length = array ? array.length : 0;
+      length = array == null ? 0 : array.length;
 
   if (initAccum && length) {
     accumulator = array[++index];

_arrayReduceRight.js

@@ -11,7 +11,7 @@
  * @returns {*} Returns the accumulated value.
  */
 function arrayReduceRight(array, iteratee, accumulator, initAccum) {
-  var length = array ? array.length : 0;
+  var length = array == null ? 0 : array.length;
   if (initAccum && length) {
     accumulator = array[--length];
   }

_arraySampleSize.js

@@ -1,4 +1,5 @@
-var copyArray = require('./_copyArray'),
+var baseClamp = require('./_baseClamp'),
+    copyArray = require('./_copyArray'),
     shuffleSelf = require('./_shuffleSelf');
 
 /**
@@ -10,7 +11,7 @@ var copyArray = require('./_copyArray'),
  * @returns {Array} Returns the random elements.
  */
 function arraySampleSize(array, n) {
-  return shuffleSelf(copyArray(array), n);
+  return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
 }
 
 module.exports = arraySampleSize;

_arraySome.js

@@ -10,7 +10,7 @@
  */
 function arraySome(array, predicate) {
   var index = -1,
-      length = array ? array.length : 0;
+      length = array == null ? 0 : array.length;
 
   while (++index < length) {
     if (predicate(array[index], index, array)) {

_assignMergeValue.js

@@ -12,7 +12,7 @@ var baseAssignValue = require('./_baseAssignValue'),
  */
 function assignMergeValue(object, key, value) {
   if ((value !== undefined && !eq(object[key], value)) ||
-      (typeof key == 'number' && value === undefined && !(key in object))) {
+      (value === undefined && !(key in object))) {
     baseAssignValue(object, key, value);
   }
 }

_baseAssignIn.js

@@ -0,0 +1,17 @@
+var copyObject = require('./_copyObject'),
+    keysIn = require('./keysIn');
+
+/**
+ * The base implementation of `_.assignIn` without support for multiple sources
+ * or `customizer` functions.
+ *
+ * @private
+ * @param {Object} object The destination object.
+ * @param {Object} source The source object.
+ * @returns {Object} Returns `object`.
+ */
+function baseAssignIn(object, source) {
+  return object && copyObject(source, keysIn(source), object);
+}
+
+module.exports = baseAssignIn;

_baseAssignValue.js

@@ -1,5 +1,4 @@
-/** Built-in value references. */
-var defineProperty = Object.defineProperty;
+var defineProperty = require('./_defineProperty');
 
 /**
  * The base implementation of `assignValue` and `assignMergeValue` without

_baseAt.js

@@ -5,17 +5,17 @@ var get = require('./get');
  *
  * @private
  * @param {Object} object The object to iterate over.
- * @param {string[]} paths The property paths of elements to pick.
+ * @param {string[]} paths The property paths to pick.
  * @returns {Array} Returns the picked elements.
  */
 function baseAt(object, paths) {
   var index = -1,
-      isNil = object == null,
       length = paths.length,
-      result = Array(length);
+      result = Array(length),
+      skip = object == null;
 
   while (++index < length) {
-    result[index] = isNil ? undefined : get(object, paths[index]);
+    result[index] = skip ? undefined : get(object, paths[index]);
   }
   return result;
 }

_baseClone.js

@@ -2,10 +2,13 @@ var Stack = require('./_Stack'),
     arrayEach = require('./_arrayEach'),
     assignValue = require('./_assignValue'),
     baseAssign = require('./_baseAssign'),
+    baseAssignIn = require('./_baseAssignIn'),
     cloneBuffer = require('./_cloneBuffer'),
     copyArray = require('./_copyArray'),
     copySymbols = require('./_copySymbols'),
+    copySymbolsIn = require('./_copySymbolsIn'),
     getAllKeys = require('./_getAllKeys'),
+    getAllKeysIn = require('./_getAllKeysIn'),
     getTag = require('./_getTag'),
     initCloneArray = require('./_initCloneArray'),
     initCloneByTag = require('./_initCloneByTag'),
@@ -15,6 +18,11 @@ var Stack = require('./_Stack'),
     isObject = require('./isObject'),
     keys = require('./keys');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1,
+    CLONE_FLAT_FLAG = 2,
+    CLONE_SYMBOLS_FLAG = 4;
+
 /** `Object#toString` result references. */
 var argsTag = '[object Arguments]',
     arrayTag = '[object Array]',
@@ -66,16 +74,22 @@ cloneableTags[weakMapTag] = false;
  *
  * @private
  * @param {*} value The value to clone.
- * @param {boolean} [isDeep] Specify a deep clone.
- * @param {boolean} [isFull] Specify a clone including symbols.
+ * @param {boolean} bitmask The bitmask flags.
+ *  1 - Deep clone
+ *  2 - Flatten inherited properties
+ *  4 - Clone symbols
  * @param {Function} [customizer] The function to customize cloning.
  * @param {string} [key] The key of `value`.
  * @param {Object} [object] The parent object of `value`.
  * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
  * @returns {*} Returns the cloned value.
  */
-function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
-  var result;
+function baseClone(value, bitmask, customizer, key, object, stack) {
+  var result,
+      isDeep = bitmask & CLONE_DEEP_FLAG,
+      isFlat = bitmask & CLONE_FLAT_FLAG,
+      isFull = bitmask & CLONE_SYMBOLS_FLAG;
+
   if (customizer) {
     result = object ? customizer(value, key, object, stack) : customizer(value);
   }
@@ -99,9 +113,11 @@ function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
       return cloneBuffer(value, isDeep);
     }
     if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
-      result = initCloneObject(isFunc ? {} : value);
+      result = (isFlat || isFunc) ? {} : initCloneObject(value);
       if (!isDeep) {
-        return copySymbols(value, baseAssign(result, value));
+        return isFlat
+          ? copySymbolsIn(value, baseAssignIn(result, value))
+          : copySymbols(value, baseAssign(result, value));
       }
     } else {
       if (!cloneableTags[tag]) {
@@ -118,16 +134,18 @@ function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
   }
   stack.set(value, result);
 
-  if (!isArr) {
-    var props = isFull ? getAllKeys(value) : keys(value);
-  }
+  var keysFunc = isFull
+    ? (isFlat ? getAllKeysIn : getAllKeys)
+    : (isFlat ? keysIn : keys);
+
+  var props = isArr ? undefined : keysFunc(value);
   arrayEach(props || value, function(subValue, key) {
     if (props) {
       key = subValue;
       subValue = value[key];
     }
     // Recursively populate clone (susceptible to call stack limits).
-    assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));
+    assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
   });
   return result;
 }

_baseCreate.js

@@ -20,7 +20,7 @@ var baseCreate = (function() {
     if (objectCreate) {
       return objectCreate(proto);
     }
-    object.prototype = prototype;
+    object.prototype = proto;
     var result = new object;
     object.prototype = undefined;
     return result;

_baseDifference.js

@@ -45,7 +45,7 @@ function baseDifference(array, values, iteratee, comparator) {
   outer:
   while (++index < length) {
     var value = array[index],
-        computed = iteratee ? iteratee(value) : value;
+        computed = iteratee == null ? value : iteratee(value);
 
     value = (comparator || value !== 0) ? value : 0;
     if (isCommon && computed === computed) {

_baseGet.js

@@ -1,5 +1,4 @@
 var castPath = require('./_castPath'),
-    isKey = require('./_isKey'),
     toKey = require('./_toKey');
 
 /**
@@ -11,7 +10,7 @@ var castPath = require('./_castPath'),
  * @returns {*} Returns the resolved value.
  */
 function baseGet(object, path) {
-  path = isKey(path, object) ? [path] : castPath(path);
+  path = castPath(path, object);
 
   var index = 0,
       length = path.length;

_baseGetTag.js

@@ -1,22 +1,29 @@
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
+var Symbol = require('./_Symbol'),
+    getRawTag = require('./_getRawTag'),
+    objectToString = require('./_objectToString');
+
+/** `Object#toString` result references. */
+var nullTag = '[object Null]',
+    undefinedTag = '[object Undefined]';
+
+/** Built-in value references. */
+var symToStringTag = Symbol ? Symbol.toStringTag : undefined;
 
 /**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
-/**
- * The base implementation of `getTag`.
+ * The base implementation of `getTag` without fallbacks for buggy environments.
  *
  * @private
  * @param {*} value The value to query.
  * @returns {string} Returns the `toStringTag`.
  */
 function baseGetTag(value) {
-  return objectToString.call(value);
+  if (value == null) {
+    return value === undefined ? undefinedTag : nullTag;
+  }
+  value = Object(value);
+  return (symToStringTag && symToStringTag in value)
+    ? getRawTag(value)
+    : objectToString(value);
 }
 
 module.exports = baseGetTag;

_baseInvoke.js

@@ -1,6 +1,5 @@
 var apply = require('./_apply'),
     castPath = require('./_castPath'),
-    isKey = require('./_isKey'),
     last = require('./last'),
     parent = require('./_parent'),
     toKey = require('./_toKey');
@@ -16,12 +15,9 @@ var apply = require('./_apply'),
  * @returns {*} Returns the result of the invoked method.
  */
 function baseInvoke(object, path, args) {
-  if (!isKey(path, object)) {
-    path = castPath(path);
-    object = parent(object, path);
-    path = last(path);
-  }
-  var func = object == null ? object : object[toKey(path)];
+  path = castPath(path, object);
+  object = parent(object, path);
+  var func = object == null ? object : object[toKey(last(path))];
   return func == null ? undefined : apply(func, object, args);
 }
 

_baseIsArguments.js

@@ -0,0 +1,18 @@
+var baseGetTag = require('./_baseGetTag'),
+    isObjectLike = require('./isObjectLike');
+
+/** `Object#toString` result references. */
+var argsTag = '[object Arguments]';
+
+/**
+ * The base implementation of `_.isArguments`.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is an `arguments` object,
+ */
+function baseIsArguments(value) {
+  return isObjectLike(value) && baseGetTag(value) == argsTag;
+}
+
+module.exports = baseIsArguments;

_baseIsArrayBuffer.js

@@ -1,17 +1,8 @@
-var isObjectLike = require('./isObjectLike');
+var baseGetTag = require('./_baseGetTag'),
+    isObjectLike = require('./isObjectLike');
 
 var arrayBufferTag = '[object ArrayBuffer]';
 
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
 /**
  * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
  *
@@ -20,7 +11,7 @@ var objectToString = objectProto.toString;
  * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
  */
 function baseIsArrayBuffer(value) {
-  return isObjectLike(value) && objectToString.call(value) == arrayBufferTag;
+  return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
 }
 
 module.exports = baseIsArrayBuffer;

_baseIsDate.js

@@ -1,18 +1,9 @@
-var isObjectLike = require('./isObjectLike');
+var baseGetTag = require('./_baseGetTag'),
+    isObjectLike = require('./isObjectLike');
 
 /** `Object#toString` result references. */
 var dateTag = '[object Date]';
 
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
 /**
  * The base implementation of `_.isDate` without Node.js optimizations.
  *
@@ -21,7 +12,7 @@ var objectToString = objectProto.toString;
  * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
  */
 function baseIsDate(value) {
-  return isObjectLike(value) && objectToString.call(value) == dateTag;
+  return isObjectLike(value) && baseGetTag(value) == dateTag;
 }
 
 module.exports = baseIsDate;

_baseIsEqual.js

@@ -9,22 +9,21 @@ var baseIsEqualDeep = require('./_baseIsEqualDeep'),
  * @private
  * @param {*} value The value to compare.
  * @param {*} other The other value to compare.
+ * @param {boolean} bitmask The bitmask flags.
+ *  1 - Unordered comparison
+ *  2 - Partial comparison
  * @param {Function} [customizer] The function to customize comparisons.
- * @param {boolean} [bitmask] The bitmask of comparison flags.
- *  The bitmask may be composed of the following flags:
- *     1 - Unordered comparison
- *     2 - Partial comparison
  * @param {Object} [stack] Tracks traversed `value` and `other` objects.
  * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
  */
-function baseIsEqual(value, other, customizer, bitmask, stack) {
+function baseIsEqual(value, other, bitmask, customizer, stack) {
   if (value === other) {
     return true;
   }
   if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
     return value !== value && other !== other;
   }
-  return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);
+  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
 }
 
 module.exports = baseIsEqual;

_baseIsEqualDeep.js

@@ -4,10 +4,11 @@ var Stack = require('./_Stack'),
     equalObjects = require('./_equalObjects'),
     getTag = require('./_getTag'),
     isArray = require('./isArray'),
+    isBuffer = require('./isBuffer'),
     isTypedArray = require('./isTypedArray');
 
-/** Used to compose bitmasks for comparison styles. */
-var PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1;
 
 /** `Object#toString` result references. */
 var argsTag = '[object Arguments]',
@@ -28,14 +29,13 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @private
  * @param {Object} object The object to compare.
  * @param {Object} other The other object to compare.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+ * @param {Function} customizer The function to customize comparisons.
  * @param {Function} equalFunc The function to determine equivalents of values.
- * @param {Function} [customizer] The function to customize comparisons.
- * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`
- *  for more details.
  * @param {Object} [stack] Tracks traversed `object` and `other` objects.
  * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
  */
-function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
+function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
   var objIsArr = isArray(object),
       othIsArr = isArray(other),
       objTag = arrayTag,
@@ -53,13 +53,20 @@ function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
       othIsObj = othTag == objectTag,
       isSameTag = objTag == othTag;
 
+  if (isSameTag && isBuffer(object)) {
+    if (!isBuffer(other)) {
+      return false;
+    }
+    objIsArr = true;
+    objIsObj = false;
+  }
   if (isSameTag && !objIsObj) {
     stack || (stack = new Stack);
     return (objIsArr || isTypedArray(object))
-      ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)
-      : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);
+      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
+      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
   }
-  if (!(bitmask & PARTIAL_COMPARE_FLAG)) {
+  if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
     var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
         othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
 
@@ -68,14 +75,14 @@ function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
           othUnwrapped = othIsWrapped ? other.value() : other;
 
       stack || (stack = new Stack);
-      return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);
+      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
     }
   }
   if (!isSameTag) {
     return false;
   }
   stack || (stack = new Stack);
-  return equalObjects(object, other, equalFunc, customizer, bitmask, stack);
+  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
 }
 
 module.exports = baseIsEqualDeep;

_baseIsMatch.js

@@ -1,9 +1,9 @@
 var Stack = require('./_Stack'),
     baseIsEqual = require('./_baseIsEqual');
 
-/** Used to compose bitmasks for comparison styles. */
-var UNORDERED_COMPARE_FLAG = 1,
-    PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1,
+    COMPARE_UNORDERED_FLAG = 2;
 
 /**
  * The base implementation of `_.isMatch` without support for iteratee shorthands.
@@ -49,7 +49,7 @@ function baseIsMatch(object, source, matchData, customizer) {
         var result = customizer(objValue, srcValue, key, object, source, stack);
       }
       if (!(result === undefined
-            ? baseIsEqual(srcValue, objValue, customizer, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG, stack)
+            ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
             : result
           )) {
         return false;

_baseIsRegExp.js

@@ -1,18 +1,9 @@
-var isObject = require('./isObject');
+var baseGetTag = require('./_baseGetTag'),
+    isObjectLike = require('./isObjectLike');
 
 /** `Object#toString` result references. */
 var regexpTag = '[object RegExp]';
 
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
 /**
  * The base implementation of `_.isRegExp` without Node.js optimizations.
  *
@@ -21,7 +12,7 @@ var objectToString = objectProto.toString;
  * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
  */
 function baseIsRegExp(value) {
-  return isObject(value) && objectToString.call(value) == regexpTag;
+  return isObjectLike(value) && baseGetTag(value) == regexpTag;
 }
 
 module.exports = baseIsRegExp;

_baseIsTypedArray.js

@@ -1,4 +1,5 @@
-var isLength = require('./isLength'),
+var baseGetTag = require('./_baseGetTag'),
+    isLength = require('./isLength'),
     isObjectLike = require('./isObjectLike');
 
 /** `Object#toString` result references. */
@@ -44,16 +45,6 @@ typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
 typedArrayTags[setTag] = typedArrayTags[stringTag] =
 typedArrayTags[weakMapTag] = false;
 
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
 /**
  * The base implementation of `_.isTypedArray` without Node.js optimizations.
  *
@@ -63,7 +54,7 @@ var objectToString = objectProto.toString;
  */
 function baseIsTypedArray(value) {
   return isObjectLike(value) &&
-    isLength(value.length) && !!typedArrayTags[objectToString.call(value)];
+    isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
 }
 
 module.exports = baseIsTypedArray;

_baseMatchesProperty.js

@@ -6,9 +6,9 @@ var baseIsEqual = require('./_baseIsEqual'),
     matchesStrictComparable = require('./_matchesStrictComparable'),
     toKey = require('./_toKey');
 
-/** Used to compose bitmasks for comparison styles. */
-var UNORDERED_COMPARE_FLAG = 1,
-    PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1,
+    COMPARE_UNORDERED_FLAG = 2;
 
 /**
  * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
@@ -26,7 +26,7 @@ function baseMatchesProperty(path, srcValue) {
     var objValue = get(object, path);
     return (objValue === undefined && objValue === srcValue)
       ? hasIn(object, path)
-      : baseIsEqual(srcValue, objValue, undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG);
+      : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
   };
 }
 

_baseMean.js

@@ -13,7 +13,7 @@ var NAN = 0 / 0;
  * @returns {number} Returns the mean.
  */
 function baseMean(array, iteratee) {
-  var length = array ? array.length : 0;
+  var length = array == null ? 0 : array.length;
   return length ? (baseSum(array, iteratee) / length) : NAN;
 }
 

_baseMerge.js

@@ -1,11 +1,9 @@
 var Stack = require('./_Stack'),
-    arrayEach = require('./_arrayEach'),
     assignMergeValue = require('./_assignMergeValue'),
-    baseKeysIn = require('./_baseKeysIn'),
+    baseFor = require('./_baseFor'),
     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.
@@ -22,14 +20,7 @@ function baseMerge(object, source, srcIndex, customizer, stack) {
   if (object === source) {
     return;
   }
-  if (!(isArray(source) || isTypedArray(source))) {
-    var props = baseKeysIn(source);
-  }
-  arrayEach(props || source, function(srcValue, key) {
-    if (props) {
-      key = srcValue;
-      srcValue = source[key];
-    }
+  baseFor(source, function(srcValue, key) {
     if (isObject(srcValue)) {
       stack || (stack = new Stack);
       baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
@@ -44,7 +35,7 @@ function baseMerge(object, source, srcIndex, customizer, stack) {
       }
       assignMergeValue(object, key, newValue);
     }
-  });
+  }, keysIn);
 }
 
 module.exports = baseMerge;

_baseMergeDeep.js

@@ -1,9 +1,12 @@
 var assignMergeValue = require('./_assignMergeValue'),
-    baseClone = require('./_baseClone'),
+    cloneBuffer = require('./_cloneBuffer'),
+    cloneTypedArray = require('./_cloneTypedArray'),
     copyArray = require('./_copyArray'),
+    initCloneObject = require('./_initCloneObject'),
     isArguments = require('./isArguments'),
     isArray = require('./isArray'),
     isArrayLikeObject = require('./isArrayLikeObject'),
+    isBuffer = require('./isBuffer'),
     isFunction = require('./isFunction'),
     isObject = require('./isObject'),
     isPlainObject = require('./isPlainObject'),
@@ -41,29 +44,37 @@ function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, sta
   var isCommon = newValue === undefined;
 
   if (isCommon) {
+    var isArr = isArray(srcValue),
+        isBuff = !isArr && isBuffer(srcValue),
+        isTyped = !isArr && !isBuff && isTypedArray(srcValue);
+
     newValue = srcValue;
-    if (isArray(srcValue) || isTypedArray(srcValue)) {
+    if (isArr || isBuff || isTyped) {
       if (isArray(objValue)) {
         newValue = objValue;
       }
       else if (isArrayLikeObject(objValue)) {
         newValue = copyArray(objValue);
       }
-      else {
+      else if (isBuff) {
         isCommon = false;
-        newValue = baseClone(srcValue, true);
+        newValue = cloneBuffer(srcValue, true);
+      }
+      else if (isTyped) {
+        isCommon = false;
+        newValue = cloneTypedArray(srcValue, true);
+      }
+      else {
+        newValue = [];
       }
     }
     else if (isPlainObject(srcValue) || isArguments(srcValue)) {
+      newValue = objValue;
       if (isArguments(objValue)) {
         newValue = toPlainObject(objValue);
       }
       else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) {
-        isCommon = false;
-        newValue = baseClone(srcValue, true);
-      }
-      else {
-        newValue = objValue;
+        newValue = initCloneObject(srcValue);
       }
     }
     else {

_basePick.js

@@ -1,4 +1,5 @@
-var basePickBy = require('./_basePickBy');
+var basePickBy = require('./_basePickBy'),
+    hasIn = require('./hasIn');
 
 /**
  * The base implementation of `_.pick` without support for individual
@@ -6,13 +7,13 @@ var basePickBy = require('./_basePickBy');
  *
  * @private
  * @param {Object} object The source object.
- * @param {string[]} props The property identifiers to pick.
+ * @param {string[]} paths The property paths to pick.
  * @returns {Object} Returns the new object.
  */
-function basePick(object, props) {
+function basePick(object, paths) {
   object = Object(object);
-  return basePickBy(object, props, function(value, key) {
-    return key in object;
+  return basePickBy(object, paths, function(value, path) {
+    return hasIn(object, path);
   });
 }
 

_basePickBy.js

@@ -1,25 +1,27 @@
-var baseAssignValue = require('./_baseAssignValue');
+var baseGet = require('./_baseGet'),
+    baseSet = require('./_baseSet'),
+    castPath = require('./_castPath');
 
 /**
  * The base implementation of  `_.pickBy` without support for iteratee shorthands.
  *
  * @private
  * @param {Object} object The source object.
- * @param {string[]} props The property identifiers to pick from.
+ * @param {string[]} paths The property paths to pick.
  * @param {Function} predicate The function invoked per property.
  * @returns {Object} Returns the new object.
  */
-function basePickBy(object, props, predicate) {
+function basePickBy(object, paths, predicate) {
   var index = -1,
-      length = props.length,
+      length = paths.length,
       result = {};
 
   while (++index < length) {
-    var key = props[index],
-        value = object[key];
+    var path = paths[index],
+        value = baseGet(object, path);
 
-    if (predicate(value, key)) {
-      baseAssignValue(result, key, value);
+    if (predicate(value, path)) {
+      baseSet(result, castPath(path, object), value);
     }
   }
   return result;

_basePullAt.js

@@ -1,9 +1,5 @@
-var castPath = require('./_castPath'),
-    isIndex = require('./_isIndex'),
-    isKey = require('./_isKey'),
-    last = require('./last'),
-    parent = require('./_parent'),
-    toKey = require('./_toKey');
+var baseUnset = require('./_baseUnset'),
+    isIndex = require('./_isIndex');
 
 /** Used for built-in method references. */
 var arrayProto = Array.prototype;
@@ -30,17 +26,8 @@ function basePullAt(array, indexes) {
       var previous = index;
       if (isIndex(index)) {
         splice.call(array, index, 1);
-      }
-      else if (!isKey(index, array)) {
-        var path = castPath(index),
-            object = parent(array, path);
-
-        if (object != null) {
-          delete object[toKey(last(path))];
-        }
-      }
-      else {
-        delete array[toKey(index)];
+      } else {
+        baseUnset(array, index);
       }
     }
   }

_baseSampleSize.js

@@ -1,4 +1,5 @@
-var shuffleSelf = require('./_shuffleSelf'),
+var baseClamp = require('./_baseClamp'),
+    shuffleSelf = require('./_shuffleSelf'),
     values = require('./values');
 
 /**
@@ -10,7 +11,8 @@ var shuffleSelf = require('./_shuffleSelf'),
  * @returns {Array} Returns the random elements.
  */
 function baseSampleSize(collection, n) {
-  return shuffleSelf(values(collection), n);
+  var array = values(collection);
+  return shuffleSelf(array, baseClamp(n, 0, array.length));
 }
 
 module.exports = baseSampleSize;

_baseSet.js

@@ -1,7 +1,6 @@
 var assignValue = require('./_assignValue'),
     castPath = require('./_castPath'),
     isIndex = require('./_isIndex'),
-    isKey = require('./_isKey'),
     isObject = require('./isObject'),
     toKey = require('./_toKey');
 
@@ -19,7 +18,7 @@ function baseSet(object, path, value, customizer) {
   if (!isObject(object)) {
     return object;
   }
-  path = isKey(path, object) ? [path] : castPath(path);
+  path = castPath(path, object);
 
   var index = -1,
       length = path.length,

_baseSetToString.js

@@ -1,6 +1,6 @@
 var constant = require('./constant'),
-    identity = require('./identity'),
-    nativeDefineProperty = require('./_nativeDefineProperty');
+    defineProperty = require('./_defineProperty'),
+    identity = require('./identity');
 
 /**
  * The base implementation of `setToString` without support for hot loop shorting.
@@ -10,8 +10,8 @@ var constant = require('./constant'),
  * @param {Function} string The `toString` result.
  * @returns {Function} Returns `func`.
  */
-var baseSetToString = !nativeDefineProperty ? identity : function(func, string) {
-  return nativeDefineProperty(func, 'toString', {
+var baseSetToString = !defineProperty ? identity : function(func, string) {
+  return defineProperty(func, 'toString', {
     'configurable': true,
     'enumerable': false,
     'value': constant(string),

_baseSortedIndex.js

@@ -20,7 +20,7 @@ var MAX_ARRAY_LENGTH = 4294967295,
  */
 function baseSortedIndex(array, value, retHighest) {
   var low = 0,
-      high = array ? array.length : low;
+      high = array == null ? low : array.length;
 
   if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
     while (low < high) {

_baseSortedIndexBy.js

@@ -25,7 +25,7 @@ function baseSortedIndexBy(array, value, iteratee, retHighest) {
   value = iteratee(value);
 
   var low = 0,
-      high = array ? array.length : 0,
+      high = array == null ? 0 : array.length,
       valIsNaN = value !== value,
       valIsNull = value === null,
       valIsSymbol = isSymbol(value),

_baseToString.js

@@ -1,4 +1,6 @@
 var Symbol = require('./_Symbol'),
+    arrayMap = require('./_arrayMap'),
+    isArray = require('./isArray'),
     isSymbol = require('./isSymbol');
 
 /** Used as references for various `Number` constants. */
@@ -21,6 +23,10 @@ function baseToString(value) {
   if (typeof value == 'string') {
     return value;
   }
+  if (isArray(value)) {
+    // Recursively convert values (susceptible to call stack limits).
+    return arrayMap(value, baseToString) + '';
+  }
   if (isSymbol(value)) {
     return symbolToString ? symbolToString.call(value) : '';
   }

_baseUnset.js

@@ -1,29 +1,20 @@
 var castPath = require('./_castPath'),
-    isKey = require('./_isKey'),
     last = require('./last'),
     parent = require('./_parent'),
     toKey = require('./_toKey');
 
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/** Used to check objects for own properties. */
-var hasOwnProperty = objectProto.hasOwnProperty;
-
 /**
  * The base implementation of `_.unset`.
  *
  * @private
  * @param {Object} object The object to modify.
- * @param {Array|string} path The path of the property to unset.
+ * @param {Array|string} path The property path to unset.
  * @returns {boolean} Returns `true` if the property is deleted, else `false`.
  */
 function baseUnset(object, path) {
-  path = isKey(path, object) ? [path] : castPath(path);
+  path = castPath(path, object);
   object = parent(object, path);
-
-  var key = toKey(last(path));
-  return !(object != null && hasOwnProperty.call(object, key)) || delete object[key];
+  return object == null || delete object[toKey(last(path))];
 }
 
 module.exports = baseUnset;

_baseXor.js

@@ -1,5 +1,5 @@
-var arrayPush = require('./_arrayPush'),
-    baseDifference = require('./_baseDifference'),
+var baseDifference = require('./_baseDifference'),
+    baseFlatten = require('./_baseFlatten'),
     baseUniq = require('./_baseUniq');
 
 /**
@@ -13,18 +13,24 @@ var arrayPush = require('./_arrayPush'),
  * @returns {Array} Returns the new array of values.
  */
 function baseXor(arrays, iteratee, comparator) {
+  var length = arrays.length;
+  if (length < 2) {
+    return length ? baseUniq(arrays[0]) : [];
+  }
   var index = -1,
-      length = arrays.length;
+      result = Array(length);
 
   while (++index < length) {
-    var result = result
-      ? arrayPush(
-          baseDifference(result, arrays[index], iteratee, comparator),
-          baseDifference(arrays[index], result, iteratee, comparator)
-        )
-      : arrays[index];
+    var array = arrays[index],
+        othIndex = -1;
+
+    while (++othIndex < length) {
+      if (othIndex != index) {
+        result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
+      }
+    }
   }
-  return (result && result.length) ? baseUniq(result, iteratee, comparator) : [];
+  return baseUniq(baseFlatten(result, 1), iteratee, comparator);
 }
 
 module.exports = baseXor;

_castPath.js

@@ -1,15 +1,21 @@
 var isArray = require('./isArray'),
-    stringToPath = require('./_stringToPath');
+    isKey = require('./_isKey'),
+    stringToPath = require('./_stringToPath'),
+    toString = require('./toString');
 
 /**
  * Casts `value` to a path array if it's not one.
  *
  * @private
  * @param {*} value The value to inspect.
+ * @param {Object} [object] The object to query keys on.
  * @returns {Array} Returns the cast property path array.
  */
-function castPath(value) {
-  return isArray(value) ? value : stringToPath(value);
+function castPath(value, object) {
+  if (isArray(value)) {
+    return value;
+  }
+  return isKey(value, object) ? [value] : stringToPath(toString(value));
 }
 
 module.exports = castPath;

_cloneMap.js

@@ -2,6 +2,9 @@ var addMapEntry = require('./_addMapEntry'),
     arrayReduce = require('./_arrayReduce'),
     mapToArray = require('./_mapToArray');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1;
+
 /**
  * Creates a clone of `map`.
  *
@@ -12,7 +15,7 @@ var addMapEntry = require('./_addMapEntry'),
  * @returns {Object} Returns the cloned map.
  */
 function cloneMap(map, isDeep, cloneFunc) {
-  var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);
+  var array = isDeep ? cloneFunc(mapToArray(map), CLONE_DEEP_FLAG) : mapToArray(map);
   return arrayReduce(array, addMapEntry, new map.constructor);
 }
 

_cloneSet.js

@@ -2,6 +2,9 @@ var addSetEntry = require('./_addSetEntry'),
     arrayReduce = require('./_arrayReduce'),
     setToArray = require('./_setToArray');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1;
+
 /**
  * Creates a clone of `set`.
  *
@@ -12,7 +15,7 @@ var addSetEntry = require('./_addSetEntry'),
  * @returns {Object} Returns the cloned set.
  */
 function cloneSet(set, isDeep, cloneFunc) {
-  var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);
+  var array = isDeep ? cloneFunc(setToArray(set), CLONE_DEEP_FLAG) : setToArray(set);
   return arrayReduce(array, addSetEntry, new set.constructor);
 }
 

_copySymbols.js

@@ -2,7 +2,7 @@ var copyObject = require('./_copyObject'),
     getSymbols = require('./_getSymbols');
 
 /**
- * Copies own symbol properties of `source` to `object`.
+ * Copies own symbols of `source` to `object`.
  *
  * @private
  * @param {Object} source The object to copy symbols from.

_copySymbolsIn.js

@@ -0,0 +1,16 @@
+var copyObject = require('./_copyObject'),
+    getSymbolsIn = require('./_getSymbolsIn');
+
+/**
+ * Copies own and inherited symbols of `source` to `object`.
+ *
+ * @private
+ * @param {Object} source The object to copy symbols from.
+ * @param {Object} [object={}] The object to copy symbols to.
+ * @returns {Object} Returns `object`.
+ */
+function copySymbolsIn(source, object) {
+  return copyObject(source, getSymbolsIn(source), object);
+}
+
+module.exports = copySymbolsIn;

_createBind.js

@@ -2,7 +2,7 @@ var createCtor = require('./_createCtor'),
     root = require('./_root');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1;
+var WRAP_BIND_FLAG = 1;
 
 /**
  * Creates a function that wraps `func` to invoke it with the optional `this`
@@ -15,7 +15,7 @@ var BIND_FLAG = 1;
  * @returns {Function} Returns the new wrapped function.
  */
 function createBind(func, bitmask, thisArg) {
-  var isBind = bitmask & BIND_FLAG,
+  var isBind = bitmask & WRAP_BIND_FLAG,
       Ctor = createCtor(func);
 
   function wrapper() {

_createFlow.js

@@ -12,10 +12,10 @@ var LARGE_ARRAY_SIZE = 200;
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /** Used to compose bitmasks for function metadata. */
-var CURRY_FLAG = 8,
-    PARTIAL_FLAG = 32,
-    ARY_FLAG = 128,
-    REARG_FLAG = 256;
+var WRAP_CURRY_FLAG = 8,
+    WRAP_PARTIAL_FLAG = 32,
+    WRAP_ARY_FLAG = 128,
+    WRAP_REARG_FLAG = 256;
 
 /**
  * Creates a `_.flow` or `_.flowRight` function.
@@ -50,7 +50,7 @@ function createFlow(fromRight) {
           data = funcName == 'wrapper' ? getData(func) : undefined;
 
       if (data && isLaziable(data[0]) &&
-            data[1] == (ARY_FLAG | CURRY_FLAG | PARTIAL_FLAG | REARG_FLAG) &&
+            data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
             !data[4].length && data[9] == 1
           ) {
         wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);

_createHybrid.js

@@ -9,12 +9,12 @@ var composeArgs = require('./_composeArgs'),
     root = require('./_root');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    CURRY_FLAG = 8,
-    CURRY_RIGHT_FLAG = 16,
-    ARY_FLAG = 128,
-    FLIP_FLAG = 512;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_CURRY_FLAG = 8,
+    WRAP_CURRY_RIGHT_FLAG = 16,
+    WRAP_ARY_FLAG = 128,
+    WRAP_FLIP_FLAG = 512;
 
 /**
  * Creates a function that wraps `func` to invoke it with optional `this`
@@ -36,11 +36,11 @@ var BIND_FLAG = 1,
  * @returns {Function} Returns the new wrapped function.
  */
 function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
-  var isAry = bitmask & ARY_FLAG,
-      isBind = bitmask & BIND_FLAG,
-      isBindKey = bitmask & BIND_KEY_FLAG,
-      isCurried = bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG),
-      isFlip = bitmask & FLIP_FLAG,
+  var isAry = bitmask & WRAP_ARY_FLAG,
+      isBind = bitmask & WRAP_BIND_FLAG,
+      isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
+      isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
+      isFlip = bitmask & WRAP_FLIP_FLAG,
       Ctor = isBindKey ? undefined : createCtor(func);
 
   function wrapper() {

_createPartial.js

@@ -3,7 +3,7 @@ var apply = require('./_apply'),
     root = require('./_root');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1;
+var WRAP_BIND_FLAG = 1;
 
 /**
  * Creates a function that wraps `func` to invoke it with the `this` binding
@@ -18,7 +18,7 @@ var BIND_FLAG = 1;
  * @returns {Function} Returns the new wrapped function.
  */
 function createPartial(func, bitmask, thisArg, partials) {
-  var isBind = bitmask & BIND_FLAG,
+  var isBind = bitmask & WRAP_BIND_FLAG,
       Ctor = createCtor(func);
 
   function wrapper() {

_createRecurry.js

@@ -3,12 +3,12 @@ var isLaziable = require('./_isLaziable'),
     setWrapToString = require('./_setWrapToString');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    CURRY_BOUND_FLAG = 4,
-    CURRY_FLAG = 8,
-    PARTIAL_FLAG = 32,
-    PARTIAL_RIGHT_FLAG = 64;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_CURRY_BOUND_FLAG = 4,
+    WRAP_CURRY_FLAG = 8,
+    WRAP_PARTIAL_FLAG = 32,
+    WRAP_PARTIAL_RIGHT_FLAG = 64;
 
 /**
  * Creates a function that wraps `func` to continue currying.
@@ -28,17 +28,17 @@ var BIND_FLAG = 1,
  * @returns {Function} Returns the new wrapped function.
  */
 function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
-  var isCurry = bitmask & CURRY_FLAG,
+  var isCurry = bitmask & WRAP_CURRY_FLAG,
       newHolders = isCurry ? holders : undefined,
       newHoldersRight = isCurry ? undefined : holders,
       newPartials = isCurry ? partials : undefined,
       newPartialsRight = isCurry ? undefined : partials;
 
-  bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG);
-  bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG);
+  bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
+  bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);
 
-  if (!(bitmask & CURRY_BOUND_FLAG)) {
-    bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
+  if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
+    bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
   }
   var newData = [
     func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,

_createWrap.js

@@ -13,12 +13,12 @@ var baseSetData = require('./_baseSetData'),
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    CURRY_FLAG = 8,
-    CURRY_RIGHT_FLAG = 16,
-    PARTIAL_FLAG = 32,
-    PARTIAL_RIGHT_FLAG = 64;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_CURRY_FLAG = 8,
+    WRAP_CURRY_RIGHT_FLAG = 16,
+    WRAP_PARTIAL_FLAG = 32,
+    WRAP_PARTIAL_RIGHT_FLAG = 64;
 
 /* Built-in method references for those with the same name as other `lodash` methods. */
 var nativeMax = Math.max;
@@ -30,17 +30,16 @@ var nativeMax = Math.max;
  * @private
  * @param {Function|string} func The function or method name to wrap.
  * @param {number} bitmask The bitmask flags.
- *  The bitmask may be composed of the following flags:
- *     1 - `_.bind`
- *     2 - `_.bindKey`
- *     4 - `_.curry` or `_.curryRight` of a bound function
- *     8 - `_.curry`
- *    16 - `_.curryRight`
- *    32 - `_.partial`
- *    64 - `_.partialRight`
- *   128 - `_.rearg`
- *   256 - `_.ary`
- *   512 - `_.flip`
+ *    1 - `_.bind`
+ *    2 - `_.bindKey`
+ *    4 - `_.curry` or `_.curryRight` of a bound function
+ *    8 - `_.curry`
+ *   16 - `_.curryRight`
+ *   32 - `_.partial`
+ *   64 - `_.partialRight`
+ *  128 - `_.rearg`
+ *  256 - `_.ary`
+ *  512 - `_.flip`
  * @param {*} [thisArg] The `this` binding of `func`.
  * @param {Array} [partials] The arguments to be partially applied.
  * @param {Array} [holders] The `partials` placeholder indexes.
@@ -50,20 +49,20 @@ var nativeMax = Math.max;
  * @returns {Function} Returns the new wrapped function.
  */
 function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
-  var isBindKey = bitmask & BIND_KEY_FLAG;
+  var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
   if (!isBindKey && typeof func != 'function') {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
   var length = partials ? partials.length : 0;
   if (!length) {
-    bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
+    bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
     partials = holders = undefined;
   }
   ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
   arity = arity === undefined ? arity : toInteger(arity);
   length -= holders ? holders.length : 0;
 
-  if (bitmask & PARTIAL_RIGHT_FLAG) {
+  if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
     var partialsRight = partials,
         holdersRight = holders;
 
@@ -88,14 +87,14 @@ function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arit
     ? (isBindKey ? 0 : func.length)
     : nativeMax(newData[9] - length, 0);
 
-  if (!arity && bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG)) {
-    bitmask &= ~(CURRY_FLAG | CURRY_RIGHT_FLAG);
+  if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
+    bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
   }
-  if (!bitmask || bitmask == BIND_FLAG) {
+  if (!bitmask || bitmask == WRAP_BIND_FLAG) {
     var result = createBind(func, bitmask, thisArg);
-  } else if (bitmask == CURRY_FLAG || bitmask == CURRY_RIGHT_FLAG) {
+  } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
     result = createCurry(func, bitmask, arity);
-  } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !holders.length) {
+  } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
     result = createPartial(func, bitmask, thisArg, partials);
   } else {
     result = createHybrid.apply(undefined, newData);

_defineProperty.js

@@ -0,0 +1,11 @@
+var getNative = require('./_getNative');
+
+var defineProperty = (function() {
+  try {
+    var func = getNative(Object, 'defineProperty');
+    func({}, '', {});
+    return func;
+  } catch (e) {}
+}());
+
+module.exports = defineProperty;

_equalArrays.js

@@ -2,9 +2,9 @@ var SetCache = require('./_SetCache'),
     arraySome = require('./_arraySome'),
     cacheHas = require('./_cacheHas');
 
-/** Used to compose bitmasks for comparison styles. */
-var UNORDERED_COMPARE_FLAG = 1,
-    PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1,
+    COMPARE_UNORDERED_FLAG = 2;
 
 /**
  * A specialized version of `baseIsEqualDeep` for arrays with support for
@@ -13,15 +13,14 @@ var UNORDERED_COMPARE_FLAG = 1,
  * @private
  * @param {Array} array The array to compare.
  * @param {Array} other The other array to compare.
- * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
  * @param {Function} customizer The function to customize comparisons.
- * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
- *  for more details.
+ * @param {Function} equalFunc The function to determine equivalents of values.
  * @param {Object} stack Tracks traversed `array` and `other` objects.
  * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
  */
-function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
-  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
+function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
+  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
       arrLength = array.length,
       othLength = other.length;
 
@@ -35,7 +34,7 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
   }
   var index = -1,
       result = true,
-      seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined;
+      seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;
 
   stack.set(array, other);
   stack.set(other, array);
@@ -61,7 +60,7 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
     if (seen) {
       if (!arraySome(other, function(othValue, othIndex) {
             if (!cacheHas(seen, othIndex) &&
-                (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {
+                (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
               return seen.push(othIndex);
             }
           })) {
@@ -70,7 +69,7 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
       }
     } else if (!(
           arrValue === othValue ||
-            equalFunc(arrValue, othValue, customizer, bitmask, stack)
+            equalFunc(arrValue, othValue, bitmask, customizer, stack)
         )) {
       result = false;
       break;

_equalByTag.js

@@ -5,9 +5,9 @@ var Symbol = require('./_Symbol'),
     mapToArray = require('./_mapToArray'),
     setToArray = require('./_setToArray');
 
-/** Used to compose bitmasks for comparison styles. */
-var UNORDERED_COMPARE_FLAG = 1,
-    PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1,
+    COMPARE_UNORDERED_FLAG = 2;
 
 /** `Object#toString` result references. */
 var boolTag = '[object Boolean]',
@@ -38,14 +38,13 @@ var symbolProto = Symbol ? Symbol.prototype : undefined,
  * @param {Object} object The object to compare.
  * @param {Object} other The other object to compare.
  * @param {string} tag The `toStringTag` of the objects to compare.
- * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
  * @param {Function} customizer The function to customize comparisons.
- * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
- *  for more details.
+ * @param {Function} equalFunc The function to determine equivalents of values.
  * @param {Object} stack Tracks traversed `object` and `other` objects.
  * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
  */
-function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {
+function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
   switch (tag) {
     case dataViewTag:
       if ((object.byteLength != other.byteLength) ||
@@ -83,7 +82,7 @@ function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {
       var convert = mapToArray;
 
     case setTag:
-      var isPartial = bitmask & PARTIAL_COMPARE_FLAG;
+      var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
       convert || (convert = setToArray);
 
       if (object.size != other.size && !isPartial) {
@@ -94,11 +93,11 @@ function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {
       if (stacked) {
         return stacked == other;
       }
-      bitmask |= UNORDERED_COMPARE_FLAG;
+      bitmask |= COMPARE_UNORDERED_FLAG;
 
       // Recursively compare objects (susceptible to call stack limits).
       stack.set(object, other);
-      var result = equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack);
+      var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
       stack['delete'](object);
       return result;
 

_equalObjects.js

@@ -1,7 +1,7 @@
 var keys = require('./keys');
 
-/** Used to compose bitmasks for comparison styles. */
-var PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1;
 
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
@@ -16,15 +16,14 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @private
  * @param {Object} object The object to compare.
  * @param {Object} other The other object to compare.
- * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
  * @param {Function} customizer The function to customize comparisons.
- * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
- *  for more details.
+ * @param {Function} equalFunc The function to determine equivalents of values.
  * @param {Object} stack Tracks traversed `object` and `other` objects.
  * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
  */
-function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
-  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
+function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
+  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
       objProps = keys(object),
       objLength = objProps.length,
       othProps = keys(other),
@@ -62,7 +61,7 @@ function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
     }
     // Recursively compare objects (susceptible to call stack limits).
     if (!(compared === undefined
-          ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))
+          ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
           : compared
         )) {
       result = false;

_getRawTag.js

@@ -0,0 +1,46 @@
+var Symbol = require('./_Symbol');
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var nativeObjectToString = objectProto.toString;
+
+/** Built-in value references. */
+var symToStringTag = Symbol ? Symbol.toStringTag : undefined;
+
+/**
+ * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
+ *
+ * @private
+ * @param {*} value The value to query.
+ * @returns {string} Returns the raw `toStringTag`.
+ */
+function getRawTag(value) {
+  var isOwn = hasOwnProperty.call(value, symToStringTag),
+      tag = value[symToStringTag];
+
+  try {
+    value[symToStringTag] = undefined;
+    var unmasked = true;
+  } catch (e) {}
+
+  var result = nativeObjectToString.call(value);
+  if (unmasked) {
+    if (isOwn) {
+      value[symToStringTag] = tag;
+    } else {
+      delete value[symToStringTag];
+    }
+  }
+  return result;
+}
+
+module.exports = getRawTag;

_getSymbols.js

@@ -5,7 +5,7 @@ var overArg = require('./_overArg'),
 var nativeGetSymbols = Object.getOwnPropertySymbols;
 
 /**
- * Creates an array of the own enumerable symbol properties of `object`.
+ * Creates an array of the own enumerable symbols of `object`.
  *
  * @private
  * @param {Object} object The object to query.

_getSymbolsIn.js

@@ -7,8 +7,7 @@ var arrayPush = require('./_arrayPush'),
 var nativeGetSymbols = Object.getOwnPropertySymbols;
 
 /**
- * Creates an array of the own and inherited enumerable symbol properties
- * of `object`.
+ * Creates an array of the own and inherited enumerable symbols of `object`.
  *
  * @private
  * @param {Object} object The object to query.

_getTag.js

@@ -15,16 +15,6 @@ var mapTag = '[object Map]',
 
 var dataViewTag = '[object DataView]';
 
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
-
 /** Used to detect maps, sets, and weakmaps. */
 var dataViewCtorString = toSource(DataView),
     mapCtorString = toSource(Map),
@@ -48,9 +38,9 @@ if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
     (Set && getTag(new Set) != setTag) ||
     (WeakMap && getTag(new WeakMap) != weakMapTag)) {
   getTag = function(value) {
-    var result = objectToString.call(value),
+    var result = baseGetTag(value),
         Ctor = result == objectTag ? value.constructor : undefined,
-        ctorString = Ctor ? toSource(Ctor) : undefined;
+        ctorString = Ctor ? toSource(Ctor) : '';
 
     if (ctorString) {
       switch (ctorString) {

_hasPath.js

@@ -2,7 +2,6 @@ var castPath = require('./_castPath'),
     isArguments = require('./isArguments'),
     isArray = require('./isArray'),
     isIndex = require('./_isIndex'),
-    isKey = require('./_isKey'),
     isLength = require('./isLength'),
     toKey = require('./_toKey');
 
@@ -16,7 +15,7 @@ var castPath = require('./_castPath'),
  * @returns {boolean} Returns `true` if `path` exists, else `false`.
  */
 function hasPath(object, path, hasFunc) {
-  path = isKey(path, object) ? [path] : castPath(path);
+  path = castPath(path, object);
 
   var index = -1,
       length = path.length,
@@ -32,7 +31,7 @@ function hasPath(object, path, hasFunc) {
   if (result || ++index != length) {
     return result;
   }
-  length = object ? object.length : 0;
+  length = object == null ? 0 : object.length;
   return !!length && isLength(length) && isIndex(key, length) &&
     (isArray(object) || isArguments(object));
 }

_hasUnicode.js

@@ -1,14 +1,16 @@
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
     rsVarRange = '\\ufe0e\\ufe0f';
 
 /** Used to compose unicode capture groups. */
 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 reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
+var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');
 
 /**
  * Checks if `string` contains Unicode symbols.

_mergeData.js

@@ -6,12 +6,12 @@ var composeArgs = require('./_composeArgs'),
 var PLACEHOLDER = '__lodash_placeholder__';
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    CURRY_BOUND_FLAG = 4,
-    CURRY_FLAG = 8,
-    ARY_FLAG = 128,
-    REARG_FLAG = 256;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_CURRY_BOUND_FLAG = 4,
+    WRAP_CURRY_FLAG = 8,
+    WRAP_ARY_FLAG = 128,
+    WRAP_REARG_FLAG = 256;
 
 /* Built-in method references for those with the same name as other `lodash` methods. */
 var nativeMin = Math.min;
@@ -36,22 +36,22 @@ function mergeData(data, source) {
   var bitmask = data[1],
       srcBitmask = source[1],
       newBitmask = bitmask | srcBitmask,
-      isCommon = newBitmask < (BIND_FLAG | BIND_KEY_FLAG | ARY_FLAG);
+      isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);
 
   var isCombo =
-    ((srcBitmask == ARY_FLAG) && (bitmask == CURRY_FLAG)) ||
-    ((srcBitmask == ARY_FLAG) && (bitmask == REARG_FLAG) && (data[7].length <= source[8])) ||
-    ((srcBitmask == (ARY_FLAG | REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == CURRY_FLAG));
+    ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
+    ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
+    ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));
 
   // Exit early if metadata can't be merged.
   if (!(isCommon || isCombo)) {
     return data;
   }
   // Use source `thisArg` if available.
-  if (srcBitmask & BIND_FLAG) {
+  if (srcBitmask & WRAP_BIND_FLAG) {
     data[2] = source[2];
     // Set when currying a bound function.
-    newBitmask |= bitmask & BIND_FLAG ? 0 : CURRY_BOUND_FLAG;
+    newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
   }
   // Compose partial arguments.
   var value = source[3];
@@ -73,7 +73,7 @@ function mergeData(data, source) {
     data[7] = value;
   }
   // Use source `ary` if it's smaller.
-  if (srcBitmask & ARY_FLAG) {
+  if (srcBitmask & WRAP_ARY_FLAG) {
     data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
   }
   // Use source `arity` if one is not provided.

_nativeDefineProperty.js

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

_nodeUtil.js

@@ -15,7 +15,7 @@ var freeProcess = moduleExports && freeGlobal.process;
 /** Used to access faster Node.js helpers. */
 var nodeUtil = (function() {
   try {
-    return freeProcess && freeProcess.binding('util');
+    return freeProcess && freeProcess.binding && freeProcess.binding('util');
   } catch (e) {}
 }());
 

_objectToString.js

@@ -0,0 +1,22 @@
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var nativeObjectToString = objectProto.toString;
+
+/**
+ * Converts `value` to a string using `Object.prototype.toString`.
+ *
+ * @private
+ * @param {*} value The value to convert.
+ * @returns {string} Returns the converted string.
+ */
+function objectToString(value) {
+  return nativeObjectToString.call(value);
+}
+
+module.exports = objectToString;

_parent.js

@@ -10,7 +10,7 @@ var baseGet = require('./_baseGet'),
  * @returns {*} Returns the parent value.
  */
 function parent(object, path) {
-  return path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1));
+  return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
 }
 
 module.exports = parent;

_shortOut.js

@@ -1,5 +1,5 @@
 /** Used to detect hot functions by number of calls within a span of milliseconds. */
-var HOT_COUNT = 500,
+var HOT_COUNT = 800,
     HOT_SPAN = 16;
 
 /* Built-in method references for those with the same name as other `lodash` methods. */

_shuffleSelf.js

@@ -1,5 +1,4 @@
-var baseClamp = require('./_baseClamp'),
-    baseRandom = require('./_baseRandom');
+var baseRandom = require('./_baseRandom');
 
 /**
  * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
@@ -14,7 +13,7 @@ function shuffleSelf(array, size) {
       length = array.length,
       lastIndex = length - 1;
 
-  size = size === undefined ? length : baseClamp(size, 0, length);
+  size = size === undefined ? length : size;
   while (++index < size) {
     var rand = baseRandom(index, lastIndex),
         value = array[rand];

_stringToPath.js

@@ -1,5 +1,4 @@
-var memoizeCapped = require('./_memoizeCapped'),
-    toString = require('./toString');
+var memoizeCapped = require('./_memoizeCapped');
 
 /** Used to match property names within property paths. */
 var reLeadingDot = /^\./,
@@ -16,8 +15,6 @@ var reEscapeChar = /\\(\\)?/g;
  * @returns {Array} Returns the property path array.
  */
 var stringToPath = memoizeCapped(function(string) {
-  string = toString(string);
-
   var result = [];
   if (reLeadingDot.test(string)) {
     result.push('');

_toSource.js

@@ -8,7 +8,7 @@ var funcToString = funcProto.toString;
  * Converts `func` to its source code.
  *
  * @private
- * @param {Function} func The function to process.
+ * @param {Function} func The function to convert.
  * @returns {string} Returns the source code.
  */
 function toSource(func) {

_unicodeSize.js

@@ -1,12 +1,14 @@
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
     rsVarRange = '\\ufe0e\\ufe0f';
 
 /** Used to compose unicode capture groups. */
 var rsAstral = '[' + rsAstralRange + ']',
-    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsCombo = '[' + rsComboRange + ']',
     rsFitz = '\\ud83c[\\udffb-\\udfff]',
     rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
     rsNonAstral = '[^' + rsAstralRange + ']',

_unicodeToArray.js

@@ -1,12 +1,14 @@
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
     rsVarRange = '\\ufe0e\\ufe0f';
 
 /** Used to compose unicode capture groups. */
 var rsAstral = '[' + rsAstralRange + ']',
-    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsCombo = '[' + rsComboRange + ']',
     rsFitz = '\\ud83c[\\udffb-\\udfff]',
     rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
     rsNonAstral = '[^' + rsAstralRange + ']',

_unicodeWords.js

@@ -1,7 +1,9 @@
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
     rsDingbatRange = '\\u2700-\\u27bf',
     rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
     rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
@@ -15,7 +17,7 @@ var rsAstralRange = '\\ud800-\\udfff',
 /** Used to compose unicode capture groups. */
 var rsApos = "['\u2019]",
     rsBreak = '[' + rsBreakRange + ']',
-    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsCombo = '[' + rsComboRange + ']',
     rsDigits = '\\d+',
     rsDingbat = '[' + rsDingbatRange + ']',
     rsLower = '[' + rsLowerRange + ']',
@@ -29,22 +31,26 @@ var rsApos = "['\u2019]",
     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))?',
+var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
+    rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
+    rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
+    rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
     reOptMod = rsModifier + '?',
     rsOptVar = '[' + rsVarRange + ']?',
     rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+    rsOrdLower = '\\d*(?:(?:1st|2nd|3rd|(?![123])\\dth)\\b)',
+    rsOrdUpper = '\\d*(?:(?:1ST|2ND|3RD|(?![123])\\dTH)\\b)',
     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,
+  rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
+  rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
+  rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
+  rsUpper + '+' + rsOptContrUpper,
+  rsOrdUpper,
+  rsOrdLower,
   rsDigits,
   rsEmoji
 ].join('|'), 'g');

_updateWrapDetails.js

@@ -2,27 +2,27 @@ var arrayEach = require('./_arrayEach'),
     arrayIncludes = require('./_arrayIncludes');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    CURRY_FLAG = 8,
-    CURRY_RIGHT_FLAG = 16,
-    PARTIAL_FLAG = 32,
-    PARTIAL_RIGHT_FLAG = 64,
-    ARY_FLAG = 128,
-    REARG_FLAG = 256,
-    FLIP_FLAG = 512;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_CURRY_FLAG = 8,
+    WRAP_CURRY_RIGHT_FLAG = 16,
+    WRAP_PARTIAL_FLAG = 32,
+    WRAP_PARTIAL_RIGHT_FLAG = 64,
+    WRAP_ARY_FLAG = 128,
+    WRAP_REARG_FLAG = 256,
+    WRAP_FLIP_FLAG = 512;
 
 /** Used to associate wrap methods with their bit flags. */
 var wrapFlags = [
-  ['ary', ARY_FLAG],
-  ['bind', BIND_FLAG],
-  ['bindKey', BIND_KEY_FLAG],
-  ['curry', CURRY_FLAG],
-  ['curryRight', CURRY_RIGHT_FLAG],
-  ['flip', FLIP_FLAG],
-  ['partial', PARTIAL_FLAG],
-  ['partialRight', PARTIAL_RIGHT_FLAG],
-  ['rearg', REARG_FLAG]
+  ['ary', WRAP_ARY_FLAG],
+  ['bind', WRAP_BIND_FLAG],
+  ['bindKey', WRAP_BIND_KEY_FLAG],
+  ['curry', WRAP_CURRY_FLAG],
+  ['curryRight', WRAP_CURRY_RIGHT_FLAG],
+  ['flip', WRAP_FLIP_FLAG],
+  ['partial', WRAP_PARTIAL_FLAG],
+  ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
+  ['rearg', WRAP_REARG_FLAG]
 ];
 
 /**

ary.js

@@ -1,7 +1,7 @@
 var createWrap = require('./_createWrap');
 
 /** Used to compose bitmasks for function metadata. */
-var ARY_FLAG = 128;
+var WRAP_ARY_FLAG = 128;
 
 /**
  * Creates a function that invokes `func`, with up to `n` arguments,
@@ -23,7 +23,7 @@ var ARY_FLAG = 128;
 function ary(func, n, guard) {
   n = guard ? undefined : n;
   n = (func && n == null) ? func.length : n;
-  return createWrap(func, ARY_FLAG, undefined, undefined, undefined, undefined, n);
+  return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
 }
 
 module.exports = ary;

at.js

@@ -9,7 +9,7 @@ var baseAt = require('./_baseAt'),
  * @since 1.0.0
  * @category Object
  * @param {Object} object The object to iterate over.
- * @param {...(string|string[])} [paths] The property paths of elements to pick.
+ * @param {...(string|string[])} [paths] The property paths to pick.
  * @returns {Array} Returns the picked values.
  * @example
  *

bind.js

@@ -4,8 +4,8 @@ var baseRest = require('./_baseRest'),
     replaceHolders = require('./_replaceHolders');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    PARTIAL_FLAG = 32;
+var WRAP_BIND_FLAG = 1,
+    WRAP_PARTIAL_FLAG = 32;
 
 /**
  * Creates a function that invokes `func` with the `this` binding of `thisArg`
@@ -43,10 +43,10 @@ var BIND_FLAG = 1,
  * // => 'hi fred!'
  */
 var bind = baseRest(function(func, thisArg, partials) {
-  var bitmask = BIND_FLAG;
+  var bitmask = WRAP_BIND_FLAG;
   if (partials.length) {
     var holders = replaceHolders(partials, getHolder(bind));
-    bitmask |= PARTIAL_FLAG;
+    bitmask |= WRAP_PARTIAL_FLAG;
   }
   return createWrap(func, bitmask, thisArg, partials, holders);
 });

bindKey.js

@@ -4,9 +4,9 @@ var baseRest = require('./_baseRest'),
     replaceHolders = require('./_replaceHolders');
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    PARTIAL_FLAG = 32;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_PARTIAL_FLAG = 32;
 
 /**
  * Creates a function that invokes the method at `object[key]` with `partials`
@@ -54,10 +54,10 @@ var BIND_FLAG = 1,
  * // => 'hiya fred!'
  */
 var bindKey = baseRest(function(object, key, partials) {
-  var bitmask = BIND_FLAG | BIND_KEY_FLAG;
+  var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
   if (partials.length) {
     var holders = replaceHolders(partials, getHolder(bindKey));
-    bitmask |= PARTIAL_FLAG;
+    bitmask |= WRAP_PARTIAL_FLAG;
   }
   return createWrap(key, bitmask, object, partials, holders);
 });

chunk.js

@@ -33,7 +33,7 @@ function chunk(array, size, guard) {
   } else {
     size = nativeMax(toInteger(size), 0);
   }
-  var length = array ? array.length : 0;
+  var length = array == null ? 0 : array.length;
   if (!length || size < 1) {
     return [];
   }

clone.js

@@ -1,5 +1,8 @@
 var baseClone = require('./_baseClone');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_SYMBOLS_FLAG = 4;
+
 /**
  * Creates a shallow clone of `value`.
  *
@@ -27,7 +30,7 @@ var baseClone = require('./_baseClone');
  * // => true
  */
 function clone(value) {
-  return baseClone(value, false, true);
+  return baseClone(value, CLONE_SYMBOLS_FLAG);
 }
 
 module.exports = clone;

cloneDeep.js

@@ -1,5 +1,9 @@
 var baseClone = require('./_baseClone');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1,
+    CLONE_SYMBOLS_FLAG = 4;
+
 /**
  * This method is like `_.clone` except that it recursively clones `value`.
  *
@@ -19,7 +23,7 @@ var baseClone = require('./_baseClone');
  * // => false
  */
 function cloneDeep(value) {
-  return baseClone(value, true, true);
+  return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
 }
 
 module.exports = cloneDeep;

cloneDeepWith.js

@@ -1,5 +1,9 @@
 var baseClone = require('./_baseClone');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1,
+    CLONE_SYMBOLS_FLAG = 4;
+
 /**
  * This method is like `_.cloneWith` except that it recursively clones `value`.
  *
@@ -29,7 +33,8 @@ var baseClone = require('./_baseClone');
  * // => 20
  */
 function cloneDeepWith(value, customizer) {
-  return baseClone(value, true, true, customizer);
+  customizer = typeof customizer == 'function' ? customizer : undefined;
+  return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
 }
 
 module.exports = cloneDeepWith;

cloneWith.js

@@ -1,5 +1,8 @@
 var baseClone = require('./_baseClone');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_SYMBOLS_FLAG = 4;
+
 /**
  * This method is like `_.clone` except that it accepts `customizer` which
  * is invoked to produce the cloned value. If `customizer` returns `undefined`,
@@ -32,7 +35,8 @@ var baseClone = require('./_baseClone');
  * // => 0
  */
 function cloneWith(value, customizer) {
-  return baseClone(value, false, true, customizer);
+  customizer = typeof customizer == 'function' ? customizer : undefined;
+  return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
 }
 
 module.exports = cloneWith;

compact.js

@@ -15,7 +15,7 @@
  */
 function compact(array) {
   var index = -1,
-      length = array ? array.length : 0,
+      length = array == null ? 0 : array.length,
       resIndex = 0,
       result = [];
 

cond.js

@@ -36,7 +36,7 @@ var FUNC_ERROR_TEXT = 'Expected a function';
  * // => 'no match'
  */
 function cond(pairs) {
-  var length = pairs ? pairs.length : 0,
+  var length = pairs == null ? 0 : pairs.length,
       toIteratee = baseIteratee;
 
   pairs = !length ? [] : arrayMap(pairs, function(pair) {

conforms.js

@@ -1,6 +1,9 @@
 var baseClone = require('./_baseClone'),
     baseConforms = require('./_baseConforms');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1;
+
 /**
  * Creates a function that invokes the predicate properties of `source` with
  * the corresponding property values of a given object, returning `true` if
@@ -26,7 +29,7 @@ var baseClone = require('./_baseClone'),
  * // => [{ 'a': 1, 'b': 2 }]
  */
 function conforms(source) {
-  return baseConforms(baseClone(source, true));
+  return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
 }
 
 module.exports = conforms;

core.js

@@ -1,8 +1,8 @@
 /**
  * @license
- * lodash (Custom Build) <https://lodash.com/>
+ * Lodash (Custom Build) <https://lodash.com/>
  * Build: `lodash core -o ./dist/lodash.core.js`
- * Copyright jQuery Foundation and other contributors <https://jquery.org/>
+ * Copyright JS Foundation and other contributors <https://js.foundation/>
  * Released under MIT license <https://lodash.com/license>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
  * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
@@ -13,18 +13,18 @@
   var undefined;
 
   /** Used as the semantic version number. */
-  var VERSION = '4.16.2';
+  var VERSION = '4.17.2';
 
   /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
-  /** Used to compose bitmasks for function metadata. */
-  var BIND_FLAG = 1,
-      PARTIAL_FLAG = 32;
+  /** Used to compose bitmasks for value comparisons. */
+  var COMPARE_PARTIAL_FLAG = 1,
+      COMPARE_UNORDERED_FLAG = 2;
 
-  /** Used to compose bitmasks for comparison styles. */
-  var UNORDERED_COMPARE_FLAG = 1,
-      PARTIAL_COMPARE_FLAG = 2;
+  /** Used to compose bitmasks for function metadata. */
+  var WRAP_BIND_FLAG = 1,
+      WRAP_PARTIAL_FLAG = 32;
 
   /** Used as references for various `Number` constants. */
   var INFINITY = 1 / 0,
@@ -33,6 +33,7 @@
   /** `Object#toString` result references. */
   var argsTag = '[object Arguments]',
       arrayTag = '[object Array]',
+      asyncTag = '[object AsyncFunction]',
       boolTag = '[object Boolean]',
       dateTag = '[object Date]',
       errorTag = '[object Error]',
@@ -40,6 +41,7 @@
       genTag = '[object GeneratorFunction]',
       numberTag = '[object Number]',
       objectTag = '[object Object]',
+      proxyTag = '[object Proxy]',
       regexpTag = '[object RegExp]',
       stringTag = '[object String]';
 
@@ -213,7 +215,7 @@
    * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
-  var objectToString = objectProto.toString;
+  var nativeObjectToString = objectProto.toString;
 
   /** Used to restore the original `_` reference in `_.noConflict`. */
   var oldDash = root._;
@@ -369,7 +371,7 @@
       if (objectCreate) {
         return objectCreate(proto);
       }
-      object.prototype = prototype;
+      object.prototype = proto;
       var result = new object;
       object.prototype = undefined;
       return result;
@@ -609,6 +611,17 @@
     });
   }
 
+  /**
+   * The base implementation of `getTag` without fallbacks for buggy environments.
+   *
+   * @private
+   * @param {*} value The value to query.
+   * @returns {string} Returns the `toStringTag`.
+   */
+  function baseGetTag(value) {
+    return objectToString(value);
+  }
+
   /**
    * The base implementation of `_.gt` which doesn't coerce arguments.
    *
@@ -622,6 +635,15 @@
     return value > other;
   }
 
+  /**
+   * The base implementation of `_.isArguments`.
+   *
+   * @private
+   * @param {*} value The value to check.
+   * @returns {boolean} Returns `true` if `value` is an `arguments` object,
+   */
+  var baseIsArguments = noop;
+
   /**
    * The base implementation of `_.isDate` without Node.js optimizations.
    *
@@ -630,7 +652,7 @@
    * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
    */
   function baseIsDate(value) {
-    return isObjectLike(value) && objectToString.call(value) == dateTag;
+    return isObjectLike(value) && baseGetTag(value) == dateTag;
   }
 
   /**
@@ -640,22 +662,21 @@
    * @private
    * @param {*} value The value to compare.
    * @param {*} other The other value to compare.
+   * @param {boolean} bitmask The bitmask flags.
+   *  1 - Unordered comparison
+   *  2 - Partial comparison
    * @param {Function} [customizer] The function to customize comparisons.
-   * @param {boolean} [bitmask] The bitmask of comparison flags.
-   *  The bitmask may be composed of the following flags:
-   *     1 - Unordered comparison
-   *     2 - Partial comparison
    * @param {Object} [stack] Tracks traversed `value` and `other` objects.
    * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
    */
-  function baseIsEqual(value, other, customizer, bitmask, stack) {
+  function baseIsEqual(value, other, bitmask, customizer, stack) {
     if (value === other) {
       return true;
     }
     if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
       return value !== value && other !== other;
     }
-    return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);
+    return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
   }
 
   /**
@@ -666,25 +687,24 @@
    * @private
    * @param {Object} object The object to compare.
    * @param {Object} other The other object to compare.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+   * @param {Function} customizer The function to customize comparisons.
    * @param {Function} equalFunc The function to determine equivalents of values.
-   * @param {Function} [customizer] The function to customize comparisons.
-   * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
    * @param {Object} [stack] Tracks traversed `object` and `other` objects.
    * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
    */
-  function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
+  function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
     var objIsArr = isArray(object),
         othIsArr = isArray(other),
         objTag = arrayTag,
         othTag = arrayTag;
 
     if (!objIsArr) {
-      objTag = objectToString.call(object);
+      objTag = baseGetTag(object);
       objTag = objTag == argsTag ? objectTag : objTag;
     }
     if (!othIsArr) {
-      othTag = objectToString.call(other);
+      othTag = baseGetTag(other);
       othTag = othTag == argsTag ? objectTag : othTag;
     }
     var objIsObj = objTag == objectTag,
@@ -705,12 +725,12 @@
     stack.push([other, object]);
     if (isSameTag && !objIsObj) {
       var result = (objIsArr)
-        ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)
-        : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);
+        ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
+        : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
       stack.pop();
       return result;
     }
-    if (!(bitmask & PARTIAL_COMPARE_FLAG)) {
+    if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
       var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
           othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
 
@@ -718,7 +738,7 @@
         var objUnwrapped = objIsWrapped ? object.value() : object,
             othUnwrapped = othIsWrapped ? other.value() : other;
 
-        var result = equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);
+        var result = equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
         stack.pop();
         return result;
       }
@@ -726,7 +746,7 @@
     if (!isSameTag) {
       return false;
     }
-    var result = equalObjects(object, other, equalFunc, customizer, bitmask, stack);
+    var result = equalObjects(object, other, bitmask, customizer, equalFunc, stack);
     stack.pop();
     return result;
   }
@@ -739,7 +759,7 @@
    * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
    */
   function baseIsRegExp(value) {
-    return isObject(value) && objectToString.call(value) == regexpTag;
+    return isObjectLike(value) && baseGetTag(value) == regexpTag;
   }
 
   /**
@@ -808,7 +828,7 @@
       while (length--) {
         var key = props[length];
         if (!(key in object &&
-              baseIsEqual(source[key], object[key], undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG)
+              baseIsEqual(source[key], object[key], COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG)
             )) {
           return false;
         }
@@ -823,7 +843,7 @@
    *
    * @private
    * @param {Object} object The source object.
-   * @param {string[]} props The property identifiers to pick.
+   * @param {string[]} paths The property paths to pick.
    * @returns {Object} Returns the new object.
    */
   function basePick(object, props) {
@@ -1140,7 +1160,7 @@
     if (typeof func != 'function') {
       throw new TypeError(FUNC_ERROR_TEXT);
     }
-    var isBind = bitmask & BIND_FLAG,
+    var isBind = bitmask & WRAP_BIND_FLAG,
         Ctor = createCtor(func);
 
     function wrapper() {
@@ -1169,15 +1189,14 @@
    * @private
    * @param {Array} array The array to compare.
    * @param {Array} other The other array to compare.
-   * @param {Function} equalFunc The function to determine equivalents of values.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
    * @param {Function} customizer The function to customize comparisons.
-   * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
+   * @param {Function} equalFunc The function to determine equivalents of values.
    * @param {Object} stack Tracks traversed `array` and `other` objects.
    * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
    */
-  function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
-    var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
+  function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
+    var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
         arrLength = array.length,
         othLength = other.length;
 
@@ -1186,7 +1205,7 @@
     }
     var index = -1,
         result = true,
-        seen = (bitmask & UNORDERED_COMPARE_FLAG) ? [] : undefined;
+        seen = (bitmask & COMPARE_UNORDERED_FLAG) ? [] : undefined;
 
     // Ignore non-index properties.
     while (++index < arrLength) {
@@ -1205,7 +1224,7 @@
       if (seen) {
         if (!baseSome(other, function(othValue, othIndex) {
               if (!indexOf(seen, othIndex) &&
-                  (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {
+                  (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                 return seen.push(othIndex);
               }
             })) {
@@ -1214,7 +1233,7 @@
         }
       } else if (!(
             arrValue === othValue ||
-              equalFunc(arrValue, othValue, customizer, bitmask, stack)
+              equalFunc(arrValue, othValue, bitmask, customizer, stack)
           )) {
         result = false;
         break;
@@ -1234,14 +1253,13 @@
    * @param {Object} object The object to compare.
    * @param {Object} other The other object to compare.
    * @param {string} tag The `toStringTag` of the objects to compare.
-   * @param {Function} equalFunc The function to determine equivalents of values.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
    * @param {Function} customizer The function to customize comparisons.
-   * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
+   * @param {Function} equalFunc The function to determine equivalents of values.
    * @param {Object} stack Tracks traversed `object` and `other` objects.
    * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
    */
-  function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {
+  function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
     switch (tag) {
 
       case boolTag:
@@ -1272,15 +1290,14 @@
    * @private
    * @param {Object} object The object to compare.
    * @param {Object} other The other object to compare.
-   * @param {Function} equalFunc The function to determine equivalents of values.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
    * @param {Function} customizer The function to customize comparisons.
-   * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
+   * @param {Function} equalFunc The function to determine equivalents of values.
    * @param {Object} stack Tracks traversed `object` and `other` objects.
    * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
    */
-  function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
-    var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
+  function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
+    var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
         objProps = keys(object),
         objLength = objProps.length,
         othProps = keys(other),
@@ -1307,7 +1324,7 @@
       var compared;
       // Recursively compare objects (susceptible to call stack limits).
       if (!(compared === undefined
-            ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))
+            ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
             : compared
           )) {
         result = false;
@@ -1371,6 +1388,17 @@
     return result;
   }
 
+  /**
+   * Converts `value` to a string using `Object.prototype.toString`.
+   *
+   * @private
+   * @param {*} value The value to convert.
+   * @returns {string} Returns the converted string.
+   */
+  function objectToString(value) {
+    return nativeObjectToString.call(value);
+  }
+
   /**
    * A specialized version of `baseRest` which transforms the rest array.
    *
@@ -1411,15 +1439,6 @@
    */
   var setToString = identity;
 
-  /**
-   * Converts `value` to a string key if it's not a string or symbol.
-   *
-   * @private
-   * @param {*} value The value to inspect.
-   * @returns {string|symbol} Returns the key.
-   */
-  var toKey = String;
-
   /*------------------------------------------------------------------------*/
 
   /**
@@ -1487,8 +1506,7 @@
    * @since 1.1.0
    * @category Array
    * @param {Array} array The array to inspect.
-   * @param {Function} [predicate=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @param {number} [fromIndex=0] The index to search from.
    * @returns {number} Returns the index of the found element, else `-1`.
    * @example
@@ -1515,7 +1533,7 @@
    * // => 2
    */
   function findIndex(array, predicate, fromIndex) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return -1;
     }
@@ -1541,7 +1559,7 @@
    * // => [1, 2, [3, [4]], 5]
    */
   function flatten(array) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     return length ? baseFlatten(array, 1) : [];
   }
 
@@ -1560,7 +1578,7 @@
    * // => [1, 2, 3, 4, 5]
    */
   function flattenDeep(array) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     return length ? baseFlatten(array, INFINITY) : [];
   }
 
@@ -1610,7 +1628,7 @@
    * // => 3
    */
   function indexOf(array, value, fromIndex) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (typeof fromIndex == 'number') {
       fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex;
     } else {
@@ -1643,7 +1661,7 @@
    * // => 3
    */
   function last(array) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     return length ? array[length - 1] : undefined;
   }
 
@@ -1664,7 +1682,7 @@
    * @returns {Array} Returns the slice of `array`.
    */
   function slice(array, start, end) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     start = start == null ? 0 : +start;
     end = end === undefined ? length : +end;
     return length ? baseSlice(array, start, end) : [];
@@ -1828,8 +1846,7 @@
    * @since 0.1.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [predicate=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
    * @returns {boolean} Returns `true` if all elements pass the predicate check,
    *  else `false`.
@@ -1872,8 +1889,7 @@
    * @since 0.1.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [predicate=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @returns {Array} Returns the new filtered array.
    * @see _.reject
    * @example
@@ -1912,8 +1928,7 @@
    * @since 0.1.0
    * @category Collection
    * @param {Array|Object} collection The collection to inspect.
-   * @param {Function} [predicate=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @param {number} [fromIndex=0] The index to search from.
    * @returns {*} Returns the matched element, else `undefined`.
    * @example
@@ -2244,7 +2259,7 @@
    * // => 'hi fred!'
    */
   var bind = baseRest(function(func, thisArg, partials) {
-    return createPartial(func, BIND_FLAG | PARTIAL_FLAG, thisArg, partials);
+    return createPartial(func, WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG, thisArg, partials);
   });
 
   /**
@@ -2433,11 +2448,10 @@
    * _.isArguments([1, 2, 3]);
    * // => false
    */
-  function isArguments(value) {
-    // 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);
-  }
+  var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
+    return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
+      !propertyIsEnumerable.call(value, 'callee');
+  };
 
   /**
    * Checks if `value` is classified as an `Array` object.
@@ -2493,35 +2507,6 @@
     return value != null && isLength(value.length) && !isFunction(value);
   }
 
-  /**
-   * This method is like `_.isArrayLike` except that it also checks if `value`
-   * is an object.
-   *
-   * @static
-   * @memberOf _
-   * @since 4.0.0
-   * @category Lang
-   * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is an array-like object,
-   *  else `false`.
-   * @example
-   *
-   * _.isArrayLikeObject([1, 2, 3]);
-   * // => true
-   *
-   * _.isArrayLikeObject(document.body.children);
-   * // => true
-   *
-   * _.isArrayLikeObject('abc');
-   * // => false
-   *
-   * _.isArrayLikeObject(_.noop);
-   * // => false
-   */
-  function isArrayLikeObject(value) {
-    return isObjectLike(value) && isArrayLike(value);
-  }
-
   /**
    * Checks if `value` is classified as a boolean primitive or object.
    *
@@ -2541,7 +2526,7 @@
    */
   function isBoolean(value) {
     return value === true || value === false ||
-      (isObjectLike(value) && objectToString.call(value) == boolTag);
+      (isObjectLike(value) && baseGetTag(value) == boolTag);
   }
 
   /**
@@ -2685,10 +2670,13 @@
    * // => false
    */
   function isFunction(value) {
+    if (!isObject(value)) {
+      return false;
+    }
     // The use of `Object#toString` avoids issues with the `typeof` operator
-    // 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;
+    // in Safari 9 which returns 'object' for typed arrays and other constructors.
+    var tag = baseGetTag(value);
+    return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
   }
 
   /**
@@ -2864,7 +2852,7 @@
    */
   function isNumber(value) {
     return typeof value == 'number' ||
-      (isObjectLike(value) && objectToString.call(value) == numberTag);
+      (isObjectLike(value) && baseGetTag(value) == numberTag);
   }
 
   /**
@@ -2905,7 +2893,7 @@
    */
   function isString(value) {
     return typeof value == 'string' ||
-      (!isArray(value) && isObjectLike(value) && objectToString.call(value) == stringTag);
+      (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
   }
 
   /**
@@ -3020,8 +3008,8 @@
    * @memberOf _
    * @since 4.0.0
    * @category Lang
-   * @param {*} value The value to process.
-   * @returns {string} Returns the string.
+   * @param {*} value The value to convert.
+   * @returns {string} Returns the converted string.
    * @example
    *
    * _.toString(null);
@@ -3182,7 +3170,7 @@
    */
   function create(prototype, properties) {
     var result = baseCreate(prototype);
-    return properties ? assign(result, properties) : result;
+    return properties == null ? result : assign(result, properties);
   }
 
   /**
@@ -3305,7 +3293,7 @@
    * @memberOf _
    * @category Object
    * @param {Object} object The source object.
-   * @param {...(string|string[])} [props] The property identifiers to pick.
+   * @param {...(string|string[])} [paths] The property paths to pick.
    * @returns {Object} Returns the new object.
    * @example
    *
@@ -3314,8 +3302,8 @@
    * _.pick(object, ['a', 'c']);
    * // => { 'a': 1, 'c': 3 }
    */
-  var pick = flatRest(function(object, props) {
-    return object == null ? {} : basePick(object, baseMap(props, toKey));
+  var pick = flatRest(function(object, paths) {
+    return object == null ? {} : basePick(object, paths);
   });
 
   /**
@@ -3382,7 +3370,7 @@
    * // => ['h', 'i']
    */
   function values(object) {
-    return object ? baseValues(object, keys(object)) : [];
+    return object == null ? [] : baseValues(object, keys(object));
   }
 
   /*------------------------------------------------------------------------*/

core.min.js

@@ -1,29 +1,29 @@
 /**
  * @license
- * lodash (Custom Build) /license | Underscore.js 1.8.3 underscorejs.org/LICENSE
+ * Lodash (Custom Build) lodash.com/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?nn: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 j(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===nn||M(n,ln[r])&&!pn.call(e,r)?t:n}function c(n,t,r){if(typeof n!="function")throw new TypeError("Expected a function");
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