Bump to v4.16.5.

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-amd v4.16.1
+# lodash-amd v4.16.5
 
 The [Lodash](https://lodash.com/) library exported as [AMD](https://github.com/amdjs/amdjs-api/wiki/AMD) modules.
 
@@ -27,4 +27,4 @@ require({
 });
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.16.1-amd) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.16.5-amd) for more details.

_Hash.js

@@ -9,7 +9,7 @@ define(['./_hashClear', './_hashDelete', './_hashGet', './_hashHas', './_hashSet
    */
   function Hash(entries) {
     var index = -1,
-        length = entries ? entries.length : 0;
+        length = entries == null ? 0 : entries.length;
 
     this.clear();
     while (++index < length) {

_ListCache.js

@@ -9,7 +9,7 @@ define(['./_listCacheClear', './_listCacheDelete', './_listCacheGet', './_listCa
    */
   function ListCache(entries) {
     var index = -1,
-        length = entries ? entries.length : 0;
+        length = entries == null ? 0 : entries.length;
 
     this.clear();
     while (++index < length) {

_MapCache.js

@@ -9,7 +9,7 @@ define(['./_mapCacheClear', './_mapCacheDelete', './_mapCacheGet', './_mapCacheH
    */
   function MapCache(entries) {
     var index = -1,
-        length = entries ? entries.length : 0;
+        length = entries == null ? 0 : entries.length;
 
     this.clear();
     while (++index < length) {

_SetCache.js

@@ -10,7 +10,7 @@ define(['./_MapCache', './_setCacheAdd', './_setCacheHas'], function(MapCache, s
    */
   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

@@ -12,7 +12,7 @@ define([], function() {
    */
   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

@@ -11,7 +11,7 @@ define([], function() {
    */
   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

@@ -10,7 +10,7 @@ define([], function() {
    * @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

@@ -12,7 +12,7 @@ define([], function() {
    */
   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

@@ -11,7 +11,7 @@ define([], function() {
    */
   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 @@ define(['./_baseIndexOf'], function(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

@@ -11,7 +11,7 @@ define([], function() {
    */
   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

@@ -1,4 +1,4 @@
-define(['./_baseTimes', './isArguments', './isArray', './_isIndex'], function(baseTimes, isArguments, isArray, isIndex) {
+define(['./_baseTimes', './isArguments', './isArray', './isBuffer', './_isIndex', './isTypedArray'], function(baseTimes, isArguments, isArray, isBuffer, isIndex, isTypedArray) {
 
   /** Used for built-in method references. */
   var objectProto = Object.prototype;
@@ -15,18 +15,26 @@ define(['./_baseTimes', './isArguments', './isArray', './_isIndex'], function(ba
    * @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

@@ -11,7 +11,7 @@ define([], function() {
    */
   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

@@ -14,7 +14,7 @@ define([], function() {
    */
   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

@@ -13,7 +13,7 @@ define([], function() {
    * @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];
     }

_arraySample.js

@@ -4,8 +4,7 @@ define(['./_baseRandom'], function(baseRandom) {
   var undefined;
 
   /**
-   * A specialized version of `_.sample` for arrays without support for iteratee
-   * shorthands.
+   * A specialized version of `_.sample` for arrays.
    *
    * @private
    * @param {Array} array The array to sample.

_arraySampleSize.js

@@ -1,4 +1,4 @@
-define(['./_arrayShuffle', './_baseClamp'], function(arrayShuffle, baseClamp) {
+define(['./_baseClamp', './_copyArray', './_shuffleSelf'], function(baseClamp, copyArray, shuffleSelf) {
 
   /**
    * A specialized version of `_.sampleSize` for arrays.
@@ -9,9 +9,7 @@ define(['./_arrayShuffle', './_baseClamp'], function(arrayShuffle, baseClamp) {
    * @returns {Array} Returns the random elements.
    */
   function arraySampleSize(array, n) {
-    var result = arrayShuffle(array);
-    result.length = baseClamp(n, 0, result.length);
-    return result;
+    return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
   }
 
   return arraySampleSize;

_arraySome.js

@@ -12,7 +12,7 @@ define([], function() {
    */
   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

@@ -14,7 +14,7 @@ define(['./_baseAssignValue', './eq'], function(baseAssignValue, eq) {
    */
   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);
     }
   }

_baseAssignValue.js

@@ -1,7 +1,4 @@
-define([], function() {
-
-  /** Built-in value references. */
-  var defineProperty = Object.defineProperty;
+define(['./_defineProperty'], function(defineProperty) {
 
   /**
    * The base implementation of `assignValue` and `assignMergeValue` without

_baseAt.js

@@ -13,12 +13,12 @@ define(['./get'], function(get) {
    */
   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

@@ -106,9 +106,7 @@ define(['./_Stack', './_arrayEach', './_assignValue', './_baseAssign', './_clone
     }
     stack.set(value, result);
 
-    if (!isArr) {
-      var props = isFull ? getAllKeys(value) : keys(value);
-    }
+    var props = isArr ? undefined : (isFull ? getAllKeys : keys)(value);
     arrayEach(props || value, function(subValue, key) {
       if (props) {
         key = subValue;

_baseCreate.js

@@ -1,5 +1,8 @@
 define(['./isObject'], function(isObject) {
 
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
   /** Built-in value references. */
   var objectCreate = Object.create;
 
@@ -8,12 +11,24 @@ define(['./isObject'], function(isObject) {
    * properties to the created object.
    *
    * @private
-   * @param {Object} prototype The object to inherit from.
+   * @param {Object} proto The object to inherit from.
    * @returns {Object} Returns the new object.
    */
-  function baseCreate(proto) {
-    return isObject(proto) ? objectCreate(proto) : {};
-  }
+  var baseCreate = (function() {
+    function object() {}
+    return function(proto) {
+      if (!isObject(proto)) {
+        return {};
+      }
+      if (objectCreate) {
+        return objectCreate(proto);
+      }
+      object.prototype = proto;
+      var result = new object;
+      object.prototype = undefined;
+      return result;
+    };
+  }());
 
   return baseCreate;
 });

_baseDelay.js

@@ -3,7 +3,7 @@ define([], function() {
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /**

_baseDifference.js

@@ -40,7 +40,7 @@ define(['./_SetCache', './_arrayIncludes', './_arrayIncludesWith', './_arrayMap'
     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) {

_baseGetTag.js

@@ -1,24 +1,30 @@
-define([], function() {
+define(['./_Symbol', './_getRawTag', './_objectToString'], function(Symbol, getRawTag, objectToString) {
 
-  /** Used for built-in method references. */
-  var objectProto = Object.prototype;
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
+  /** `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);
   }
 
   return baseGetTag;

_baseIsArguments.js

@@ -0,0 +1,18 @@
+define(['./_baseGetTag', './isObjectLike'], function(baseGetTag, 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;
+  }
+
+  return baseIsArguments;
+});

_baseIsArrayBuffer.js

@@ -1,17 +1,7 @@
-define(['./isObjectLike'], function(isObjectLike) {
+define(['./_baseGetTag', './isObjectLike'], function(baseGetTag, 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 +10,7 @@ define(['./isObjectLike'], function(isObjectLike) {
    * @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;
   }
 
   return baseIsArrayBuffer;

_baseIsDate.js

@@ -1,18 +1,8 @@
-define(['./isObjectLike'], function(isObjectLike) {
+define(['./_baseGetTag', './isObjectLike'], function(baseGetTag, 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 +11,7 @@ define(['./isObjectLike'], function(isObjectLike) {
    * @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;
   }
 
   return baseIsDate;

_baseIsEqualDeep.js

@@ -1,4 +1,4 @@
-define(['./_Stack', './_equalArrays', './_equalByTag', './_equalObjects', './_getTag', './isArray', './isTypedArray'], function(Stack, equalArrays, equalByTag, equalObjects, getTag, isArray, isTypedArray) {
+define(['./_Stack', './_equalArrays', './_equalByTag', './_equalObjects', './_getTag', './isArray', './isBuffer', './isTypedArray'], function(Stack, equalArrays, equalByTag, equalObjects, getTag, isArray, isBuffer, isTypedArray) {
 
   /** Used to compose bitmasks for comparison styles. */
   var PARTIAL_COMPARE_FLAG = 2;
@@ -47,6 +47,13 @@ define(['./_Stack', './_equalArrays', './_equalByTag', './_equalObjects', './_ge
         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))

_baseIsRegExp.js

@@ -1,18 +1,8 @@
-define(['./isObject'], function(isObject) {
+define(['./_baseGetTag', './isObjectLike'], function(baseGetTag, 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 +11,7 @@ define(['./isObject'], function(isObject) {
    * @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;
   }
 
   return baseIsRegExp;

_baseIsTypedArray.js

@@ -1,4 +1,4 @@
-define(['./isLength', './isObjectLike'], function(isLength, isObjectLike) {
+define(['./_baseGetTag', './isLength', './isObjectLike'], function(baseGetTag, isLength, isObjectLike) {
 
   /** `Object#toString` result references. */
   var argsTag = '[object Arguments]',
@@ -43,16 +43,6 @@ define(['./isLength', './isObjectLike'], function(isLength, isObjectLike) {
   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.
    *
@@ -62,7 +52,7 @@ define(['./isLength', './isObjectLike'], function(isLength, isObjectLike) {
    */
   function baseIsTypedArray(value) {
     return isObjectLike(value) &&
-      isLength(value.length) && !!typedArrayTags[objectToString.call(value)];
+      isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
   }
 
   return baseIsTypedArray;

_baseMean.js

@@ -13,7 +13,7 @@ define(['./_baseSum'], function(baseSum) {
    * @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

@@ -1,4 +1,4 @@
-define(['./_Stack', './_arrayEach', './_assignMergeValue', './_baseKeysIn', './_baseMergeDeep', './isArray', './isObject', './isTypedArray'], function(Stack, arrayEach, assignMergeValue, baseKeysIn, baseMergeDeep, isArray, isObject, isTypedArray) {
+define(['./_Stack', './_assignMergeValue', './_baseFor', './_baseMergeDeep', './isObject', './keysIn'], function(Stack, assignMergeValue, baseFor, baseMergeDeep, isObject, keysIn) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -18,14 +18,7 @@ define(['./_Stack', './_arrayEach', './_assignMergeValue', './_baseKeysIn', './_
     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);
@@ -40,7 +33,7 @@ define(['./_Stack', './_arrayEach', './_assignMergeValue', './_baseKeysIn', './_
         }
         assignMergeValue(object, key, newValue);
       }
-    });
+    }, keysIn);
   }
 
   return baseMerge;

_baseMergeDeep.js

@@ -1,4 +1,4 @@
-define(['./_assignMergeValue', './_baseClone', './_copyArray', './isArguments', './isArray', './isArrayLikeObject', './isFunction', './isObject', './isPlainObject', './isTypedArray', './toPlainObject'], function(assignMergeValue, baseClone, copyArray, isArguments, isArray, isArrayLikeObject, isFunction, isObject, isPlainObject, isTypedArray, toPlainObject) {
+define(['./_assignMergeValue', './_cloneBuffer', './_cloneTypedArray', './_copyArray', './_initCloneObject', './isArguments', './isArray', './isArrayLikeObject', './isBuffer', './isFunction', './isObject', './isPlainObject', './isTypedArray', './toPlainObject'], function(assignMergeValue, cloneBuffer, cloneTypedArray, copyArray, initCloneObject, isArguments, isArray, isArrayLikeObject, isBuffer, isFunction, isObject, isPlainObject, isTypedArray, toPlainObject) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -34,29 +34,37 @@ define(['./_assignMergeValue', './_baseClone', './_copyArray', './isArguments',
     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 {

_baseSample.js

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

_baseSampleSize.js

@@ -0,0 +1,17 @@
+define(['./_baseClamp', './_shuffleSelf', './values'], function(baseClamp, shuffleSelf, values) {
+
+  /**
+   * The base implementation of `_.sampleSize` without param guards.
+   *
+   * @private
+   * @param {Array|Object} collection The collection to sample.
+   * @param {number} n The number of elements to sample.
+   * @returns {Array} Returns the random elements.
+   */
+  function baseSampleSize(collection, n) {
+    var array = values(collection);
+    return shuffleSelf(array, baseClamp(n, 0, array.length));
+  }
+
+  return baseSampleSize;
+});

_baseSetToString.js

@@ -1,4 +1,4 @@
-define(['./constant', './identity', './_nativeDefineProperty'], function(constant, identity, nativeDefineProperty) {
+define(['./constant', './_defineProperty', './identity'], function(constant, defineProperty, identity) {
 
   /**
    * The base implementation of `setToString` without support for hot loop shorting.
@@ -8,8 +8,8 @@ define(['./constant', './identity', './_nativeDefineProperty'], function(constan
    * @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),

_baseShuffle.js

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

_baseSortedIndex.js

@@ -18,7 +18,7 @@ define(['./_baseSortedIndexBy', './identity', './isSymbol'], function(baseSorted
    */
   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

@@ -28,7 +28,7 @@ define(['./isSymbol'], function(isSymbol) {
     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 +1,4 @@
-define(['./_Symbol', './isSymbol'], function(Symbol, isSymbol) {
+define(['./_Symbol', './_arrayMap', './isArray', './isSymbol'], function(Symbol, arrayMap, isArray, isSymbol) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -23,6 +23,10 @@ define(['./_Symbol', './isSymbol'], function(Symbol, isSymbol) {
     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) : '';
     }

_baseXor.js

@@ -1,4 +1,4 @@
-define(['./_arrayPush', './_baseDifference', './_baseUniq'], function(arrayPush, baseDifference, baseUniq) {
+define(['./_baseDifference', './_baseFlatten', './_baseUniq'], function(baseDifference, baseFlatten, baseUniq) {
 
   /**
    * The base implementation of methods like `_.xor`, without support for
@@ -11,18 +11,25 @@ define(['./_arrayPush', './_baseDifference', './_baseUniq'], function(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) {
+        var othArray = arrays[othIndex];
+        if (othArray !== array) {
+          result[index] = baseDifference(result[index] || array, othArray, iteratee, comparator);
+        }
+      }
     }
-    return (result && result.length) ? baseUniq(result, iteratee, comparator) : [];
+    return baseUniq(baseFlatten(result, 1), iteratee, comparator);
   }
 
   return baseXor;

_cloneBuffer.js

@@ -1,4 +1,20 @@
-define([], function() {
+define(['./_root'], function(root) {
+
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
+  /** Detect free variable `exports`. */
+  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
+
+  /** Detect free variable `module`. */
+  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
+
+  /** Detect the popular CommonJS extension `module.exports`. */
+  var moduleExports = freeModule && freeModule.exports === freeExports;
+
+  /** Built-in value references. */
+  var Buffer = moduleExports ? root.Buffer : undefined,
+      allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined;
 
   /**
    * Creates a clone of  `buffer`.
@@ -12,7 +28,9 @@ define([], function() {
     if (isDeep) {
       return buffer.slice();
     }
-    var result = new buffer.constructor(buffer.length);
+    var length = buffer.length,
+        result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
+
     buffer.copy(result);
     return result;
   }

_createFlow.js

@@ -6,7 +6,7 @@ define(['./_LodashWrapper', './_flatRest', './_getData', './_getFuncName', './is
   /** Used as the size to enable large array optimizations. */
   var LARGE_ARRAY_SIZE = 200;
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /** Used to compose bitmasks for function metadata. */

_createWrap.js

@@ -3,7 +3,7 @@ define(['./_baseSetData', './_createBind', './_createCurry', './_createHybrid',
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /** Used to compose bitmasks for function metadata. */

_defineProperty.js

@@ -0,0 +1,12 @@
+define(['./_getNative'], function(getNative) {
+
+  var defineProperty = (function() {
+    try {
+      var func = getNative(Object, 'defineProperty');
+      func({}, '', {});
+      return func;
+    } catch (e) {}
+  }());
+
+  return defineProperty;
+});

_getRawTag.js

@@ -0,0 +1,50 @@
+define(['./_Symbol'], function(Symbol) {
+
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
+  /** 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;
+  }
+
+  return getRawTag;
+});

_getTag.js

@@ -12,16 +12,6 @@ define(['./_DataView', './_Map', './_Promise', './_Set', './_WeakMap', './_baseG
 
   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),
@@ -45,9 +35,9 @@ define(['./_DataView', './_Map', './_Promise', './_Set', './_WeakMap', './_baseG
       (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

@@ -26,7 +26,7 @@ define(['./_castPath', './isArguments', './isArray', './_isIndex', './_isKey', '
     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));
   }

_nativeDefineProperty.js

@@ -1,7 +0,0 @@
-define(['./_getNative'], function(getNative) {
-
-  /* Built-in method references that are verified to be native. */
-  var nativeDefineProperty = getNative(Object, 'defineProperty');
-
-  return nativeDefineProperty;
-});

_objectToString.js

@@ -0,0 +1,25 @@
+define([], function() {
+
+  /** 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);
+  }
+
+  return objectToString;
+});

_shortOut.js

@@ -4,7 +4,7 @@ define([], function() {
   var undefined;
 
   /** 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

@@ -1,24 +1,30 @@
 define(['./_baseRandom'], function(baseRandom) {
 
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
   /**
-   * A specialized version of `arrayShuffle` which mutates `array`.
+   * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
    *
    * @private
    * @param {Array} array The array to shuffle.
+   * @param {number} [size=array.length] The size of `array`.
    * @returns {Array} Returns `array`.
    */
-  function shuffleSelf(array) {
+  function shuffleSelf(array, size) {
     var index = -1,
         length = array.length,
         lastIndex = length - 1;
 
-    while (++index < length) {
+    size = size === undefined ? length : size;
+    while (++index < size) {
       var rand = baseRandom(index, lastIndex),
           value = array[rand];
 
       array[rand] = array[index];
       array[index] = value;
     }
+    array.length = size;
     return array;
   }
 

_toSource.js

@@ -10,7 +10,7 @@ define([], function() {
    * 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) {

_unicodeWords.js

@@ -31,22 +31,26 @@ define([], function() {
       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');

after.js

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

before.js

@@ -3,7 +3,7 @@ define(['./toInteger'], function(toInteger) {
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /**

chunk.js

@@ -34,7 +34,7 @@ define(['./_baseSlice', './_isIterateeCall', './toInteger'], function(baseSlice,
     } else {
       size = nativeMax(toInteger(size), 0);
     }
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length || size < 1) {
       return [];
     }

cloneDeepWith.js

@@ -1,5 +1,8 @@
 define(['./_baseClone'], function(baseClone) {
 
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
   /**
    * This method is like `_.cloneWith` except that it recursively clones `value`.
    *
@@ -29,6 +32,7 @@ define(['./_baseClone'], function(baseClone) {
    * // => 20
    */
   function cloneDeepWith(value, customizer) {
+    customizer = typeof customizer == 'function' ? customizer : undefined;
     return baseClone(value, true, true, customizer);
   }
 

cloneWith.js

@@ -1,5 +1,8 @@
 define(['./_baseClone'], function(baseClone) {
 
+  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+  var undefined;
+
   /**
    * This method is like `_.clone` except that it accepts `customizer` which
    * is invoked to produce the cloned value. If `customizer` returns `undefined`,
@@ -32,6 +35,7 @@ define(['./_baseClone'], function(baseClone) {
    * // => 0
    */
   function cloneWith(value, customizer) {
+    customizer = typeof customizer == 'function' ? customizer : undefined;
     return baseClone(value, false, true, customizer);
   }
 

compact.js

@@ -17,7 +17,7 @@ define([], function() {
    */
   function compact(array) {
     var index = -1,
-        length = array ? array.length : 0,
+        length = array == null ? 0 : array.length,
         resIndex = 0,
         result = [];
 

cond.js

@@ -1,6 +1,6 @@
 define(['./_apply', './_arrayMap', './_baseIteratee', './_baseRest'], function(apply, arrayMap, baseIteratee, baseRest) {
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /**
@@ -33,7 +33,7 @@ define(['./_apply', './_arrayMap', './_baseIteratee', './_baseRest'], function(a
    * // => '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) {

countBy.js

@@ -17,8 +17,7 @@ define(['./_baseAssignValue', './_createAggregator'], function(baseAssignValue,
    * @since 0.5.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [iteratee=_.identity]
-   *  The iteratee to transform keys.
+   * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
    * @returns {Object} Returns the composed aggregate object.
    * @example
    *

create.js

@@ -36,7 +36,7 @@ define(['./_baseAssign', './_baseCreate'], function(baseAssign, baseCreate) {
    */
   function create(prototype, properties) {
     var result = baseCreate(prototype);
-    return properties ? baseAssign(result, properties) : result;
+    return properties == null ? result : baseAssign(result, properties);
   }
 
   return create;

debounce.js

@@ -3,7 +3,7 @@ define(['./isObject', './now', './toNumber'], function(isObject, now, toNumber)
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
 
-  /** Used as the `TypeError` message for "Functions" methods. */
+  /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
   /* Built-in method references for those with the same name as other `lodash` methods. */

drop.js

@@ -29,7 +29,7 @@ define(['./_baseSlice', './toInteger'], function(baseSlice, toInteger) {
    * // => [1, 2, 3]
    */
   function drop(array, n, guard) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return [];
     }

dropRight.js

@@ -29,7 +29,7 @@ define(['./_baseSlice', './toInteger'], function(baseSlice, toInteger) {
    * // => [1, 2, 3]
    */
   function dropRight(array, n, guard) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return [];
     }

dropWhile.js

@@ -10,8 +10,7 @@ define(['./_baseIteratee', './_baseWhile'], function(baseIteratee, baseWhile) {
    * @since 3.0.0
    * @category Array
    * @param {Array} array The array to query.
-   * @param {Function} [predicate=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @returns {Array} Returns the slice of `array`.
    * @example
    *

every.js

@@ -18,8 +18,7 @@ define(['./_arrayEvery', './_baseEvery', './_baseIteratee', './isArray', './_isI
    * @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`.

fill.js

@@ -30,7 +30,7 @@ define(['./_baseFill', './_isIterateeCall'], function(baseFill, isIterateeCall)
    * // => [4, '*', '*', 10]
    */
   function fill(array, value, start, end) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return [];
     }

filter.js

@@ -12,8 +12,7 @@ define(['./_arrayFilter', './_baseFilter', './_baseIteratee', './isArray'], func
    * @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

find.js

@@ -10,8 +10,7 @@ define(['./_createFind', './findIndex'], function(createFind, findIndex) {
    * @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

findIndex.js

@@ -12,8 +12,7 @@ define(['./_baseFindIndex', './_baseIteratee', './toInteger'], function(baseFind
    * @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
@@ -40,7 +39,7 @@ define(['./_baseFindIndex', './_baseIteratee', './toInteger'], function(baseFind
    * // => 2
    */
   function findIndex(array, predicate, fromIndex) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return -1;
     }

findLast.js

@@ -9,8 +9,7 @@ define(['./_createFind', './findLastIndex'], function(createFind, findLastIndex)
    * @since 2.0.0
    * @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=collection.length-1] The index to search from.
    * @returns {*} Returns the matched element, else `undefined`.
    * @example

findLastIndex.js

@@ -16,8 +16,7 @@ define(['./_baseFindIndex', './_baseIteratee', './toInteger'], function(baseFind
    * @since 2.0.0
    * @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=array.length-1] The index to search from.
    * @returns {number} Returns the index of the found element, else `-1`.
    * @example
@@ -44,7 +43,7 @@ define(['./_baseFindIndex', './_baseIteratee', './toInteger'], function(baseFind
    * // => 0
    */
   function findLastIndex(array, predicate, fromIndex) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return -1;
     }

flatMap.js

@@ -10,8 +10,7 @@ define(['./_baseFlatten', './map'], function(baseFlatten, map) {
    * @since 4.0.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [iteratee=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [iteratee=_.identity] The function invoked per iteration.
    * @returns {Array} Returns the new flattened array.
    * @example
    *

flatMapDeep.js

@@ -12,8 +12,7 @@ define(['./_baseFlatten', './map'], function(baseFlatten, map) {
    * @since 4.7.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [iteratee=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [iteratee=_.identity] The function invoked per iteration.
    * @returns {Array} Returns the new flattened array.
    * @example
    *

flatMapDepth.js

@@ -12,8 +12,7 @@ define(['./_baseFlatten', './map', './toInteger'], function(baseFlatten, map, to
    * @since 4.7.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [iteratee=_.identity]
-   *  The function invoked per iteration.
+   * @param {Function} [iteratee=_.identity] The function invoked per iteration.
    * @param {number} [depth=1] The maximum recursion depth.
    * @returns {Array} Returns the new flattened array.
    * @example

flatten.js

@@ -15,7 +15,7 @@ define(['./_baseFlatten'], function(baseFlatten) {
    * // => [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) : [];
   }
 

flattenDeep.js

@@ -18,7 +18,7 @@ define(['./_baseFlatten'], function(baseFlatten) {
    * // => [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) : [];
   }
 

flattenDepth.js

@@ -24,7 +24,7 @@ define(['./_baseFlatten', './toInteger'], function(baseFlatten, toInteger) {
    * // => [1, 2, 3, [4], 5]
    */
   function flattenDepth(array, depth) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return [];
     }

forEach.js

@@ -1,4 +1,4 @@
-define(['./_arrayEach', './_baseEach', './_baseIteratee', './isArray'], function(arrayEach, baseEach, baseIteratee, isArray) {
+define(['./_arrayEach', './_baseEach', './_castFunction', './isArray'], function(arrayEach, baseEach, castFunction, isArray) {
 
   /**
    * Iterates over elements of `collection` and invokes `iteratee` for each element.
@@ -32,7 +32,7 @@ define(['./_arrayEach', './_baseEach', './_baseIteratee', './isArray'], function
    */
   function forEach(collection, iteratee) {
     var func = isArray(collection) ? arrayEach : baseEach;
-    return func(collection, baseIteratee(iteratee, 3));
+    return func(collection, castFunction(iteratee));
   }
 
   return forEach;

forEachRight.js

@@ -1,4 +1,4 @@
-define(['./_arrayEachRight', './_baseEachRight', './_baseIteratee', './isArray'], function(arrayEachRight, baseEachRight, baseIteratee, isArray) {
+define(['./_arrayEachRight', './_baseEachRight', './_castFunction', './isArray'], function(arrayEachRight, baseEachRight, castFunction, isArray) {
 
   /**
    * This method is like `_.forEach` except that it iterates over elements of
@@ -22,7 +22,7 @@ define(['./_arrayEachRight', './_baseEachRight', './_baseIteratee', './isArray']
    */
   function forEachRight(collection, iteratee) {
     var func = isArray(collection) ? arrayEachRight : baseEachRight;
-    return func(collection, baseIteratee(iteratee, 3));
+    return func(collection, castFunction(iteratee));
   }
 
   return forEachRight;

forIn.js

@@ -1,4 +1,4 @@
-define(['./_baseFor', './_baseIteratee', './keysIn'], function(baseFor, baseIteratee, keysIn) {
+define(['./_baseFor', './_castFunction', './keysIn'], function(baseFor, castFunction, keysIn) {
 
   /**
    * Iterates over own and inherited enumerable string keyed properties of an
@@ -31,7 +31,7 @@ define(['./_baseFor', './_baseIteratee', './keysIn'], function(baseFor, baseIter
   function forIn(object, iteratee) {
     return object == null
       ? object
-      : baseFor(object, baseIteratee(iteratee, 3), keysIn);
+      : baseFor(object, castFunction(iteratee), keysIn);
   }
 
   return forIn;

forInRight.js

@@ -1,4 +1,4 @@
-define(['./_baseForRight', './_baseIteratee', './keysIn'], function(baseForRight, baseIteratee, keysIn) {
+define(['./_baseForRight', './_castFunction', './keysIn'], function(baseForRight, castFunction, keysIn) {
 
   /**
    * This method is like `_.forIn` except that it iterates over properties of
@@ -29,7 +29,7 @@ define(['./_baseForRight', './_baseIteratee', './keysIn'], function(baseForRight
   function forInRight(object, iteratee) {
     return object == null
       ? object
-      : baseForRight(object, baseIteratee(iteratee, 3), keysIn);
+      : baseForRight(object, castFunction(iteratee), keysIn);
   }
 
   return forInRight;

forOwn.js

@@ -1,4 +1,4 @@
-define(['./_baseForOwn', './_baseIteratee'], function(baseForOwn, baseIteratee) {
+define(['./_baseForOwn', './_castFunction'], function(baseForOwn, castFunction) {
 
   /**
    * Iterates over own enumerable string keyed properties of an object and
@@ -29,7 +29,7 @@ define(['./_baseForOwn', './_baseIteratee'], function(baseForOwn, baseIteratee)
    * // => Logs 'a' then 'b' (iteration order is not guaranteed).
    */
   function forOwn(object, iteratee) {
-    return object && baseForOwn(object, baseIteratee(iteratee, 3));
+    return object && baseForOwn(object, castFunction(iteratee));
   }
 
   return forOwn;

forOwnRight.js

@@ -1,4 +1,4 @@
-define(['./_baseForOwnRight', './_baseIteratee'], function(baseForOwnRight, baseIteratee) {
+define(['./_baseForOwnRight', './_castFunction'], function(baseForOwnRight, castFunction) {
 
   /**
    * This method is like `_.forOwn` except that it iterates over properties of
@@ -27,7 +27,7 @@ define(['./_baseForOwnRight', './_baseIteratee'], function(baseForOwnRight, base
    * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
    */
   function forOwnRight(object, iteratee) {
-    return object && baseForOwnRight(object, baseIteratee(iteratee, 3));
+    return object && baseForOwnRight(object, castFunction(iteratee));
   }
 
   return forOwnRight;

fromPairs.js

@@ -17,7 +17,7 @@ define([], function() {
    */
   function fromPairs(pairs) {
     var index = -1,
-        length = pairs ? pairs.length : 0,
+        length = pairs == null ? 0 : pairs.length,
         result = {};
 
     while (++index < length) {

groupBy.js

@@ -18,8 +18,7 @@ define(['./_baseAssignValue', './_createAggregator'], function(baseAssignValue,
    * @since 0.1.0
    * @category Collection
    * @param {Array|Object} collection The collection to iterate over.
-   * @param {Function} [iteratee=_.identity]
-   *  The iteratee to transform keys.
+   * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
    * @returns {Object} Returns the composed aggregate object.
    * @example
    *

indexOf.js

@@ -27,7 +27,7 @@ define(['./_baseIndexOf', './toInteger'], function(baseIndexOf, toInteger) {
    * // => 3
    */
   function indexOf(array, value, fromIndex) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     if (!length) {
       return -1;
     }

initial.js

@@ -15,7 +15,7 @@ define(['./_baseSlice'], function(baseSlice) {
    * // => [1, 2]
    */
   function initial(array) {
-    var length = array ? array.length : 0;
+    var length = array == null ? 0 : array.length;
     return length ? baseSlice(array, 0, -1) : [];
   }
 

intersectionWith.js

@@ -28,9 +28,8 @@ define(['./_arrayMap', './_baseIntersection', './_baseRest', './_castArrayLikeOb
     var comparator = last(arrays),
         mapped = arrayMap(arrays, castArrayLikeObject);
 
-    if (comparator === last(mapped)) {
-      comparator = undefined;
-    } else {
+    comparator = typeof comparator == 'function' ? comparator : undefined;
+    if (comparator) {
       mapped.pop();
     }
     return (mapped.length && mapped[0] === arrays[0])

isArguments.js

@@ -1,7 +1,4 @@
-define(['./isArrayLikeObject'], function(isArrayLikeObject) {
-
-  /** `Object#toString` result references. */
-  var argsTag = '[object Arguments]';
+define(['./_baseIsArguments', './isObjectLike'], function(baseIsArguments, isObjectLike) {
 
   /** Used for built-in method references. */
   var objectProto = Object.prototype;
@@ -9,13 +6,6 @@ define(['./isArrayLikeObject'], function(isArrayLikeObject) {
   /** 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 objectToString = objectProto.toString;
-
   /** Built-in value references. */
   var propertyIsEnumerable = objectProto.propertyIsEnumerable;
 
@@ -37,11 +27,10 @@ define(['./isArrayLikeObject'], function(isArrayLikeObject) {
    * _.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');
+  };
 
   return isArguments;
 });

isBoolean.js

@@ -1,18 +1,8 @@
-define(['./isObjectLike'], function(isObjectLike) {
+define(['./_baseGetTag', './isObjectLike'], function(baseGetTag, isObjectLike) {
 
   /** `Object#toString` result references. */
   var boolTag = '[object Boolean]';
 
-  /** 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;
-
   /**
    * Checks if `value` is classified as a boolean primitive or object.
    *
@@ -32,7 +22,7 @@ define(['./isObjectLike'], function(isObjectLike) {
    */
   function isBoolean(value) {
     return value === true || value === false ||
-      (isObjectLike(value) && objectToString.call(value) == boolTag);
+      (isObjectLike(value) && baseGetTag(value) == boolTag);
   }
 
   return isBoolean;

isElement.js

@@ -18,7 +18,7 @@ define(['./isObjectLike', './isPlainObject'], function(isObjectLike, isPlainObje
    * // => false
    */
   function isElement(value) {
-    return value != null && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value);
+    return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
   }
 
   return isElement;

isEmpty.js

@@ -1,4 +1,4 @@
-define(['./_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer', './_isPrototype', './_nativeKeys'], function(getTag, isArguments, isArray, isArrayLike, isBuffer, isPrototype, nativeKeys) {
+define(['./_baseKeys', './_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer', './_isPrototype', './isTypedArray'], function(baseKeys, getTag, isArguments, isArray, isArrayLike, isBuffer, isPrototype, isTypedArray) {
 
   /** `Object#toString` result references. */
   var mapTag = '[object Map]',
@@ -44,9 +44,12 @@ define(['./_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer'
    * // => false
    */
   function isEmpty(value) {
+    if (value == null) {
+      return true;
+    }
     if (isArrayLike(value) &&
-        (isArray(value) || typeof value == 'string' ||
-          typeof value.splice == 'function' || isBuffer(value) || isArguments(value))) {
+        (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
+          isBuffer(value) || isTypedArray(value) || isArguments(value))) {
       return !value.length;
     }
     var tag = getTag(value);
@@ -54,7 +57,7 @@ define(['./_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer'
       return !value.size;
     }
     if (isPrototype(value)) {
-      return !nativeKeys(value).length;
+      return !baseKeys(value).length;
     }
     for (var key in value) {
       if (hasOwnProperty.call(value, key)) {

isError.js

@@ -1,17 +1,8 @@
-define(['./isObjectLike'], function(isObjectLike) {
+define(['./_baseGetTag', './isObjectLike', './isPlainObject'], function(baseGetTag, isObjectLike, isPlainObject) {
 
   /** `Object#toString` result references. */
-  var errorTag = '[object Error]';
-
-  /** 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;
+  var domExcTag = '[object DOMException]',
+      errorTag = '[object Error]';
 
   /**
    * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
@@ -35,8 +26,9 @@ define(['./isObjectLike'], function(isObjectLike) {
     if (!isObjectLike(value)) {
       return false;
     }
-    return (objectToString.call(value) == errorTag) ||
-      (typeof value.message == 'string' && typeof value.name == 'string');
+    var tag = baseGetTag(value);
+    return tag == errorTag || tag == domExcTag ||
+      (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
   }
 
   return isError;