Bump to v4.15.0.

README.md

@@ -1,4 +1,4 @@
-# lodash-amd v4.14.0
+# lodash-amd v4.15.0
 
 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/4.14.0-amd) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.15.0-amd) for more details.

_Reflect.js

@@ -1,7 +0,0 @@
-define(['./_root'], function(root) {
-
-  /** Built-in value references. */
-  var Reflect = root.Reflect;
-
-  return Reflect;
-});

_arrayIncludes.js

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

_arrayIncludesWith.js

@@ -4,7 +4,7 @@ define([], function() {
    * This function is like `arrayIncludes` except that it accepts a comparator.
    *
    * @private
-   * @param {Array} [array] The array to search.
+   * @param {Array} [array] The array to inspect.
    * @param {*} target The value to search for.
    * @param {Function} comparator The comparator invoked per element.
    * @returns {boolean} Returns `true` if `target` is found, else `false`.

_arrayLikeKeys.js

@@ -0,0 +1,37 @@
+define(['./_baseTimes', './isArguments', './isArray', './_isIndex'], function(baseTimes, isArguments, isArray, isIndex) {
+
+  /** Used for built-in method references. */
+  var objectProto = Object.prototype;
+
+  /** Used to check objects for own properties. */
+  var hasOwnProperty = objectProto.hasOwnProperty;
+
+  /**
+   * Creates an array of the enumerable property names of the array-like `value`.
+   *
+   * @private
+   * @param {*} value The value to query.
+   * @param {boolean} inherited Specify returning inherited property names.
+   * @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;
+
+    for (var key in value) {
+      if ((inherited || hasOwnProperty.call(value, key)) &&
+          !(skipIndexes && (key == 'length' || isIndex(key, length)))) {
+        result.push(key);
+      }
+    }
+    return result;
+  }
+
+  return arrayLikeKeys;
+});

_asciiSize.js

@@ -0,0 +1,13 @@
+define(['./_baseProperty'], function(baseProperty) {
+
+  /**
+   * Gets the size of an ASCII `string`.
+   *
+   * @private
+   * @param {string} string The string inspect.
+   * @returns {number} Returns the string size.
+   */
+  var asciiSize = baseProperty('length');
+
+  return asciiSize;
+});

_asciiToArray.js

@@ -0,0 +1,15 @@
+define([], function() {
+
+  /**
+   * Converts an ASCII `string` to an array.
+   *
+   * @private
+   * @param {string} string The string to convert.
+   * @returns {Array} Returns the converted array.
+   */
+  function asciiToArray(string) {
+    return string.split('');
+  }
+
+  return asciiToArray;
+});

_asciiWords.js

@@ -0,0 +1,18 @@
+define([], function() {
+
+  /** Used to match words composed of alphanumeric characters. */
+  var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
+
+  /**
+   * Splits an ASCII `string` into an array of its words.
+   *
+   * @private
+   * @param {string} The string to inspect.
+   * @returns {Array} Returns the words of `string`.
+   */
+  function asciiWords(string) {
+    return string.match(reAsciiWord) || [];
+  }
+
+  return asciiWords;
+});

_assignValue.js

@@ -11,7 +11,7 @@ define(['./eq'], function(eq) {
 
   /**
    * Assigns `value` to `key` of `object` if the existing value is not equivalent
-   * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
    * for equality comparisons.
    *
    * @private

_assocIndexOf.js

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

_baseClone.js

@@ -120,9 +120,6 @@ define(['./_Stack', './_arrayEach', './_assignValue', './_baseAssign', './_clone
       // Recursively populate clone (susceptible to call stack limits).
       assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));
     });
-    if (!isFull) {
-      stack['delete'](value);
-    }
     return result;
   }
 

_baseConformsTo.js

@@ -16,14 +16,13 @@ define([], function() {
     if (object == null) {
       return !length;
     }
-    var index = length;
-    while (index--) {
-      var key = props[index],
+    object = Object(object);
+    while (length--) {
+      var key = props[length],
           predicate = source[key],
           value = object[key];
 
-      if ((value === undefined &&
-          !(key in Object(object))) || !predicate(value)) {
+      if ((value === undefined && !(key in object)) || !predicate(value)) {
         return false;
       }
     }

_baseDelay.js

@@ -14,7 +14,7 @@ define([], function() {
    * @param {Function} func The function to delay.
    * @param {number} wait The number of milliseconds to delay invocation.
    * @param {Array} args The arguments to provide to `func`.
-   * @returns {number} Returns the timer id.
+   * @returns {number|Object} Returns the timer id or timeout object.
    */
   function baseDelay(func, wait, args) {
     if (typeof func != 'function') {

_baseFindIndex.js

@@ -5,7 +5,7 @@ define([], function() {
    * support for iteratee shorthands.
    *
    * @private
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {Function} predicate The function invoked per iteration.
    * @param {number} fromIndex The index to search from.
    * @param {boolean} [fromRight] Specify iterating from right to left.

_baseFindKey.js

@@ -6,7 +6,7 @@ define([], function() {
    * using `eachFunc`.
    *
    * @private
-   * @param {Array|Object} collection The collection to search.
+   * @param {Array|Object} collection The collection to inspect.
    * @param {Function} predicate The function invoked per iteration.
    * @param {Function} eachFunc The function to iterate over `collection`.
    * @returns {*} Returns the found element or its key, else `undefined`.

_baseGetTag.js

@@ -5,7 +5,7 @@ define([], function() {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

_baseHas.js

@@ -1,4 +1,4 @@
-define(['./_getPrototype'], function(getPrototype) {
+define([], function() {
 
   /** Used for built-in method references. */
   var objectProto = Object.prototype;
@@ -15,12 +15,7 @@ define(['./_getPrototype'], function(getPrototype) {
    * @returns {boolean} Returns `true` if `key` exists, else `false`.
    */
   function baseHas(object, key) {
-    // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,
-    // that are composed entirely of index properties, return `false` for
-    // `hasOwnProperty` checks of them.
-    return object != null &&
-      (hasOwnProperty.call(object, key) ||
-        (typeof object == 'object' && key in object && getPrototype(object) === null));
+    return object != null && hasOwnProperty.call(object, key);
   }
 
   return baseHas;

_baseIndexOf.js

@@ -4,7 +4,7 @@ define(['./_baseFindIndex', './_baseIsNaN'], function(baseFindIndex, baseIsNaN)
    * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
    *
    * @private
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} fromIndex The index to search from.
    * @returns {number} Returns the index of the matched value, else `-1`.

_baseIndexOfWith.js

@@ -4,7 +4,7 @@ define([], function() {
    * This function is like `baseIndexOf` except that it accepts a comparator.
    *
    * @private
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} fromIndex The index to search from.
    * @param {Function} comparator The comparator invoked per element.

_baseIsArrayBuffer.js

@@ -7,7 +7,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

_baseIsDate.js

@@ -8,7 +8,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

_baseIsNative.js

@@ -2,7 +2,7 @@ define(['./isFunction', './_isHostObject', './_isMasked', './isObject', './_toSo
 
   /**
    * Used to match `RegExp`
-   * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).
+   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
    */
   var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
 
@@ -10,10 +10,11 @@ define(['./isFunction', './_isHostObject', './_isMasked', './isObject', './_toSo
   var reIsHostCtor = /^\[object .+?Constructor\]$/;
 
   /** Used for built-in method references. */
-  var objectProto = Object.prototype;
+  var funcProto = Function.prototype,
+      objectProto = Object.prototype;
 
   /** Used to resolve the decompiled source of functions. */
-  var funcToString = Function.prototype.toString;
+  var funcToString = funcProto.toString;
 
   /** Used to check objects for own properties. */
   var hasOwnProperty = objectProto.hasOwnProperty;

_baseIsRegExp.js

@@ -8,7 +8,7 @@ define(['./isObject'], function(isObject) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

_baseIsTypedArray.js

@@ -48,7 +48,7 @@ define(['./isLength', './isObjectLike'], function(isLength, isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

_baseKeys.js

@@ -1,17 +1,30 @@
-define(['./_overArg'], function(overArg) {
+define(['./_isPrototype', './_nativeKeys'], function(isPrototype, nativeKeys) {
 
-  /* Built-in method references for those with the same name as other `lodash` methods. */
-  var nativeKeys = Object.keys;
+  /** 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 `_.keys` which doesn't skip the constructor
-   * property of prototypes or treat sparse arrays as dense.
+   * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
    *
    * @private
    * @param {Object} object The object to query.
    * @returns {Array} Returns the array of property names.
    */
-  var baseKeys = overArg(nativeKeys, Object);
+  function baseKeys(object) {
+    if (!isPrototype(object)) {
+      return nativeKeys(object);
+    }
+    var result = [];
+    for (var key in Object(object)) {
+      if (hasOwnProperty.call(object, key) && key != 'constructor') {
+        result.push(key);
+      }
+    }
+    return result;
+  }
 
   return baseKeys;
 });

_baseKeysIn.js

@@ -1,39 +1,32 @@
-define(['./_Reflect', './_iteratorToArray'], function(Reflect, iteratorToArray) {
-
-  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
-  var undefined;
+define(['./isObject', './_isPrototype', './_nativeKeysIn'], function(isObject, isPrototype, nativeKeysIn) {
 
   /** Used for built-in method references. */
   var objectProto = Object.prototype;
 
-  /** Built-in value references. */
-  var enumerate = Reflect ? Reflect.enumerate : undefined,
-      propertyIsEnumerable = objectProto.propertyIsEnumerable;
+  /** Used to check objects for own properties. */
+  var hasOwnProperty = objectProto.hasOwnProperty;
 
   /**
-   * The base implementation of `_.keysIn` which doesn't skip the constructor
-   * property of prototypes or treat sparse arrays as dense.
+   * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
    *
    * @private
    * @param {Object} object The object to query.
    * @returns {Array} Returns the array of property names.
    */
   function baseKeysIn(object) {
-    object = object == null ? object : Object(object);
+    if (!isObject(object)) {
+      return nativeKeysIn(object);
+    }
+    var isProto = isPrototype(object),
+        result = [];
 
-    var result = [];
     for (var key in object) {
-      result.push(key);
+      if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
+        result.push(key);
+      }
     }
     return result;
   }
 
-  // Fallback for IE < 9 with es6-shim.
-  if (enumerate && !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf')) {
-    baseKeysIn = function(object) {
-      return iteratorToArray(enumerate(object));
-    };
-  }
-
   return baseKeysIn;
 });

_baseMerge.js

@@ -1,4 +1,4 @@
-define(['./_Stack', './_arrayEach', './_assignMergeValue', './_baseMergeDeep', './isArray', './isObject', './isTypedArray', './keysIn'], function(Stack, arrayEach, assignMergeValue, baseMergeDeep, isArray, isObject, isTypedArray, keysIn) {
+define(['./_Stack', './_arrayEach', './_assignMergeValue', './_baseKeysIn', './_baseMergeDeep', './isArray', './isObject', './isTypedArray'], function(Stack, arrayEach, assignMergeValue, baseKeysIn, baseMergeDeep, isArray, isObject, isTypedArray) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -19,7 +19,7 @@ define(['./_Stack', './_arrayEach', './_assignMergeValue', './_baseMergeDeep', '
       return;
     }
     if (!(isArray(source) || isTypedArray(source))) {
-      var props = keysIn(source);
+      var props = baseKeysIn(source);
     }
     arrayEach(props || source, function(srcValue, key) {
       if (props) {

_baseSet.js

@@ -7,13 +7,16 @@ define(['./_assignValue', './_castPath', './_isIndex', './_isKey', './isObject',
    * The base implementation of `_.set`.
    *
    * @private
-   * @param {Object} object The object to query.
+   * @param {Object} object The object to modify.
    * @param {Array|string} path The path of the property to set.
    * @param {*} value The value to set.
    * @param {Function} [customizer] The function to customize path creation.
    * @returns {Object} Returns `object`.
    */
   function baseSet(object, path, value, customizer) {
+    if (!isObject(object)) {
+      return object;
+    }
     path = isKey(path, object) ? [path] : castPath(path);
 
     var index = -1,
@@ -22,20 +25,19 @@ define(['./_assignValue', './_castPath', './_isIndex', './_isKey', './isObject',
         nested = object;
 
     while (nested != null && ++index < length) {
-      var key = toKey(path[index]);
-      if (isObject(nested)) {
-        var newValue = value;
-        if (index != lastIndex) {
-          var objValue = nested[key];
-          newValue = customizer ? customizer(objValue, key, nested) : undefined;
-          if (newValue === undefined) {
-            newValue = objValue == null
-              ? (isIndex(path[index + 1]) ? [] : {})
-              : objValue;
-          }
+      var key = toKey(path[index]),
+          newValue = value;
+
+      if (index != lastIndex) {
+        var objValue = nested[key];
+        newValue = customizer ? customizer(objValue, key, nested) : undefined;
+        if (newValue === undefined) {
+          newValue = isObject(objValue)
+            ? objValue
+            : (isIndex(path[index + 1]) ? [] : {});
         }
-        assignValue(nested, key, newValue);
       }
+      assignValue(nested, key, newValue);
       nested = nested[key];
     }
     return object;

_baseUnset.js

@@ -1,4 +1,10 @@
-define(['./_baseHas', './_castPath', './_isKey', './last', './_parent', './_toKey'], function(baseHas, castPath, isKey, last, parent, toKey) {
+define(['./_castPath', './_isKey', './last', './_parent', './_toKey'], function(castPath, isKey, last, parent, 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`.
@@ -13,7 +19,7 @@ define(['./_baseHas', './_castPath', './_isKey', './last', './_parent', './_toKe
     object = parent(object, path);
 
     var key = toKey(last(path));
-    return !(object != null && baseHas(object, key)) || delete object[key];
+    return !(object != null && hasOwnProperty.call(object, key)) || delete object[key];
   }
 
   return baseUnset;

_baseUpdate.js

@@ -4,7 +4,7 @@ define(['./_baseGet', './_baseSet'], function(baseGet, baseSet) {
    * The base implementation of `_.update`.
    *
    * @private
-   * @param {Object} object The object to query.
+   * @param {Object} object The object to modify.
    * @param {Array|string} path The path of the property to update.
    * @param {Function} updater The function to produce the updated value.
    * @param {Function} [customizer] The function to customize path creation.

_createCaseFirst.js

@@ -1,4 +1,4 @@
-define(['./_castSlice', './_reHasComplexSymbol', './_stringToArray', './toString'], function(castSlice, reHasComplexSymbol, stringToArray, toString) {
+define(['./_castSlice', './_hasUnicode', './_stringToArray', './toString'], function(castSlice, hasUnicode, stringToArray, toString) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -14,7 +14,7 @@ define(['./_castSlice', './_reHasComplexSymbol', './_stringToArray', './toString
     return function(string) {
       string = toString(string);
 
-      var strSymbols = reHasComplexSymbol.test(string)
+      var strSymbols = hasUnicode(string)
         ? stringToArray(string)
         : undefined;
 

_createCtor.js

@@ -11,7 +11,7 @@ define(['./_baseCreate', './isObject'], function(baseCreate, isObject) {
   function createCtor(Ctor) {
     return function() {
       // Use a `switch` statement to work with class constructors. See
-      // http://ecma-international.org/ecma-262/6.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
+      // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
       // for more details.
       var args = arguments;
       switch (args.length) {

_createPadding.js

@@ -1,4 +1,4 @@
-define(['./_baseRepeat', './_baseToString', './_castSlice', './_reHasComplexSymbol', './_stringSize', './_stringToArray'], function(baseRepeat, baseToString, castSlice, reHasComplexSymbol, stringSize, stringToArray) {
+define(['./_baseRepeat', './_baseToString', './_castSlice', './_hasUnicode', './_stringSize', './_stringToArray'], function(baseRepeat, baseToString, castSlice, hasUnicode, stringSize, stringToArray) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -23,7 +23,7 @@ define(['./_baseRepeat', './_baseToString', './_castSlice', './_reHasComplexSymb
       return charsLength ? baseRepeat(chars, length) : chars;
     }
     var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
-    return reHasComplexSymbol.test(chars)
+    return hasUnicode(chars)
       ? castSlice(stringToArray(result), 0, length).join('')
       : result.slice(0, length);
   }

_createRange.js

@@ -1,4 +1,4 @@
-define(['./_baseRange', './_isIterateeCall', './toNumber'], function(baseRange, isIterateeCall, toNumber) {
+define(['./_baseRange', './_isIterateeCall', './toFinite'], function(baseRange, isIterateeCall, toFinite) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -16,15 +16,14 @@ define(['./_baseRange', './_isIterateeCall', './toNumber'], function(baseRange,
         end = step = undefined;
       }
       // Ensure the sign of `-0` is preserved.
-      start = toNumber(start);
-      start = start === start ? start : 0;
+      start = toFinite(start);
       if (end === undefined) {
         end = start;
         start = 0;
       } else {
-        end = toNumber(end) || 0;
+        end = toFinite(end);
       }
-      step = step === undefined ? (start < end ? 1 : -1) : (toNumber(step) || 0);
+      step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
       return baseRange(start, end, step, fromRight);
     };
   }

_deburrLetter.js

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

_equalArrays.js

@@ -78,6 +78,7 @@ define(['./_SetCache', './_arraySome'], function(SetCache, arraySome) {
       }
     }
     stack['delete'](array);
+    stack['delete'](other);
     return result;
   }
 

_equalByTag.js

@@ -73,7 +73,7 @@ define(['./_Symbol', './_Uint8Array', './eq', './_equalArrays', './_mapToArray',
       case regexpTag:
       case stringTag:
         // Coerce regexes to strings and treat strings, primitives and objects,
-        // as equal. See http://www.ecma-international.org/ecma-262/6.0/#sec-regexp.prototype.tostring
+        // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
         // for more details.
         return object == (other + '');
 

_equalObjects.js

@@ -1,4 +1,4 @@
-define(['./_baseHas', './keys'], function(baseHas, keys) {
+define(['./keys'], function(keys) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -6,6 +6,12 @@ define(['./_baseHas', './keys'], function(baseHas, keys) {
   /** Used to compose bitmasks for comparison styles. */
   var PARTIAL_COMPARE_FLAG = 2;
 
+  /** Used for built-in method references. */
+  var objectProto = Object.prototype;
+
+  /** Used to check objects for own properties. */
+  var hasOwnProperty = objectProto.hasOwnProperty;
+
   /**
    * A specialized version of `baseIsEqualDeep` for objects with support for
    * partial deep comparisons.
@@ -33,7 +39,7 @@ define(['./_baseHas', './keys'], function(baseHas, keys) {
     var index = objLength;
     while (index--) {
       var key = objProps[index];
-      if (!(isPartial ? key in other : baseHas(other, key))) {
+      if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
         return false;
       }
     }
@@ -80,6 +86,7 @@ define(['./_baseHas', './keys'], function(baseHas, keys) {
       }
     }
     stack['delete'](object);
+    stack['delete'](other);
     return result;
   }
 

_getLength.js

@@ -1,17 +0,0 @@
-define(['./_baseProperty'], function(baseProperty) {
-
-  /**
-   * Gets the "length" property value of `object`.
-   *
-   * **Note:** This function is used to avoid a
-   * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects
-   * Safari on at least iOS 8.1-8.3 ARM64.
-   *
-   * @private
-   * @param {Object} object The object to query.
-   * @returns {*} Returns the "length" value.
-   */
-  var getLength = baseProperty('length');
-
-  return getLength;
-});

_getPrototype.js

@@ -1,16 +1,7 @@
 define(['./_overArg'], function(overArg) {
 
-  /* Built-in method references for those with the same name as other `lodash` methods. */
-  var nativeGetPrototype = Object.getPrototypeOf;
-
-  /**
-   * Gets the `[[Prototype]]` of `value`.
-   *
-   * @private
-   * @param {*} value The value to query.
-   * @returns {null|Object} Returns the `[[Prototype]]`.
-   */
-  var getPrototype = overArg(nativeGetPrototype, Object);
+  /** Built-in value references. */
+  var getPrototype = overArg(Object.getPrototypeOf, Object);
 
   return getPrototype;
 });

_getSymbolsIn.js

@@ -1,4 +1,4 @@
-define(['./_arrayPush', './_getPrototype', './_getSymbols'], function(arrayPush, getPrototype, getSymbols) {
+define(['./_arrayPush', './_getPrototype', './_getSymbols', './stubArray'], function(arrayPush, getPrototype, getSymbols, stubArray) {
 
   /* Built-in method references for those with the same name as other `lodash` methods. */
   var nativeGetSymbols = Object.getOwnPropertySymbols;
@@ -11,7 +11,7 @@ define(['./_arrayPush', './_getPrototype', './_getSymbols'], function(arrayPush,
    * @param {Object} object The object to query.
    * @returns {Array} Returns the array of symbols.
    */
-  var getSymbolsIn = !nativeGetSymbols ? getSymbols : function(object) {
+  var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
     var result = [];
     while (object) {
       arrayPush(result, getSymbols(object));

_getTag.js

@@ -17,7 +17,7 @@ define(['./_DataView', './_Map', './_Promise', './_Set', './_WeakMap', './_baseG
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;
@@ -39,7 +39,7 @@ define(['./_DataView', './_Map', './_Promise', './_Set', './_WeakMap', './_baseG
   var getTag = baseGetTag;
 
   // Fallback for data views, maps, sets, and weak maps in IE 11,
-  // for data views in Edge, and promises in Node.js.
+  // for data views in Edge < 14, and promises in Node.js.
   if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
       (Map && getTag(new Map) != mapTag) ||
       (Promise && getTag(Promise.resolve()) != promiseTag) ||

_hasPath.js

@@ -1,4 +1,4 @@
-define(['./_castPath', './isArguments', './isArray', './_isIndex', './_isKey', './isLength', './isString', './_toKey'], function(castPath, isArguments, isArray, isIndex, isKey, isLength, isString, toKey) {
+define(['./_castPath', './isArguments', './isArray', './_isIndex', './_isKey', './isLength', './_toKey'], function(castPath, isArguments, isArray, isIndex, isKey, isLength, toKey) {
 
   /**
    * Checks if `path` exists on `object`.
@@ -28,7 +28,7 @@ define(['./_castPath', './isArguments', './isArray', './_isIndex', './_isKey', '
     }
     var length = object ? object.length : 0;
     return !!length && isLength(length) && isIndex(key, length) &&
-      (isArray(object) || isString(object) || isArguments(object));
+      (isArray(object) || isArguments(object));
   }
 
   return hasPath;

_hasUnicode.js

@@ -10,7 +10,18 @@ define([], function() {
   var rsZWJ = '\\u200d';
 
   /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
-  var reHasComplexSymbol = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
+  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
 
-  return reHasComplexSymbol;
+  /**
+   * Checks if `string` contains Unicode symbols.
+   *
+   * @private
+   * @param {string} string The string to inspect.
+   * @returns {boolean} Returns `true` if a symbol is found, else `false`.
+   */
+  function hasUnicode(string) {
+    return reHasUnicode.test(string);
+  }
+
+  return hasUnicode;
 });

_hasUnicodeWord.js

@@ -0,0 +1,18 @@
+define([], function() {
+
+  /** Used to detect strings that need a more robust regexp to match words. */
+  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2,}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;
+
+  /**
+   * Checks if `string` contains a word composed of Unicode symbols.
+   *
+   * @private
+   * @param {string} string The string to inspect.
+   * @returns {boolean} Returns `true` if a word is found, else `false`.
+   */
+  function hasUnicodeWord(string) {
+    return reHasUnicodeWord.test(string);
+  }
+
+  return hasUnicodeWord;
+});

_indexKeys.js

@@ -1,24 +0,0 @@
-define(['./_baseTimes', './isArguments', './isArray', './isLength', './isString'], function(baseTimes, isArguments, isArray, isLength, isString) {
-
-  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
-  var undefined;
-
-  /**
-   * Creates an array of index keys for `object` values of arrays,
-   * `arguments` objects, and strings, otherwise `null` is returned.
-   *
-   * @private
-   * @param {Object} object The object to query.
-   * @returns {Array|null} Returns index keys, else `null`.
-   */
-  function indexKeys(object) {
-    var length = object ? object.length : undefined;
-    if (isLength(length) &&
-        (isArray(object) || isString(object) || isArguments(object))) {
-      return baseTimes(length, String);
-    }
-    return null;
-  }
-
-  return indexKeys;
-});

_isFlattenable.js

@@ -15,7 +15,7 @@ define(['./_Symbol', './isArguments', './isArray'], function(Symbol, isArguments
    */
   function isFlattenable(value) {
     return isArray(value) || isArguments(value) ||
-      !!(spreadableSymbol && value && value[spreadableSymbol])
+      !!(spreadableSymbol && value && value[spreadableSymbol]);
   }
 
   return isFlattenable;

_nativeKeys.js

@@ -0,0 +1,7 @@
+define(['./_overArg'], function(overArg) {
+
+  /* Built-in method references for those with the same name as other `lodash` methods. */
+  var nativeKeys = overArg(Object.keys, Object);
+
+  return nativeKeys;
+});

_nativeKeysIn.js

@@ -0,0 +1,23 @@
+define([], function() {
+
+  /**
+   * This function is like
+   * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
+   * except that it includes inherited enumerable properties.
+   *
+   * @private
+   * @param {Object} object The object to query.
+   * @returns {Array} Returns the array of property names.
+   */
+  function nativeKeysIn(object) {
+    var result = [];
+    if (object != null) {
+      for (var key in Object(object)) {
+        result.push(key);
+      }
+    }
+    return result;
+  }
+
+  return nativeKeysIn;
+});

_nodeUtil.js

@@ -1,10 +1,10 @@
 define(['./_freeGlobal'], function(freeGlobal) {
 
   /** Detect free variable `exports`. */
-  var freeExports = freeGlobal && typeof exports == 'object' && exports;
+  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
 
   /** Detect free variable `module`. */
-  var freeModule = freeExports && typeof module == 'object' && module;
+  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
 
   /** Detect the popular CommonJS extension `module.exports`. */
   var moduleExports = freeModule && freeModule.exports === freeExports;

_overArg.js

@@ -1,7 +1,7 @@
 define([], function() {
 
   /**
-   * Creates a function that invokes `func` with its first argument transformed.
+   * Creates a unary function that invokes `func` with its argument transformed.
    *
    * @private
    * @param {Function} func The function to wrap.

_stringSize.js

@@ -1,30 +1,4 @@
-define(['./_reHasComplexSymbol'], function(reHasComplexSymbol) {
-
-  /** Used to compose unicode character classes. */
-  var rsAstralRange = '\\ud800-\\udfff',
-      rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-      rsComboSymbolsRange = '\\u20d0-\\u20f0',
-      rsVarRange = '\\ufe0e\\ufe0f';
-
-  /** Used to compose unicode capture groups. */
-  var rsAstral = '[' + rsAstralRange + ']',
-      rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
-      rsFitz = '\\ud83c[\\udffb-\\udfff]',
-      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
-      rsNonAstral = '[^' + rsAstralRange + ']',
-      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
-      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
-      rsZWJ = '\\u200d';
-
-  /** Used to compose unicode regexes. */
-  var reOptMod = rsModifier + '?',
-      rsOptVar = '[' + rsVarRange + ']?',
-      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
-      rsSeq = rsOptVar + reOptMod + rsOptJoin,
-      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
-
-  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
-  var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+define(['./_asciiSize', './_hasUnicode', './_unicodeSize'], function(asciiSize, hasUnicode, unicodeSize) {
 
   /**
    * Gets the number of symbols in `string`.
@@ -34,14 +8,9 @@ define(['./_reHasComplexSymbol'], function(reHasComplexSymbol) {
    * @returns {number} Returns the string size.
    */
   function stringSize(string) {
-    if (!(string && reHasComplexSymbol.test(string))) {
-      return string.length;
-    }
-    var result = reComplexSymbol.lastIndex = 0;
-    while (reComplexSymbol.test(string)) {
-      result++;
-    }
-    return result;
+    return hasUnicode(string)
+      ? unicodeSize(string)
+      : asciiSize(string);
   }
 
   return stringSize;

_stringToArray.js

@@ -1,30 +1,4 @@
-define([], function() {
-
-  /** Used to compose unicode character classes. */
-  var rsAstralRange = '\\ud800-\\udfff',
-      rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-      rsComboSymbolsRange = '\\u20d0-\\u20f0',
-      rsVarRange = '\\ufe0e\\ufe0f';
-
-  /** Used to compose unicode capture groups. */
-  var rsAstral = '[' + rsAstralRange + ']',
-      rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
-      rsFitz = '\\ud83c[\\udffb-\\udfff]',
-      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
-      rsNonAstral = '[^' + rsAstralRange + ']',
-      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
-      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
-      rsZWJ = '\\u200d';
-
-  /** Used to compose unicode regexes. */
-  var reOptMod = rsModifier + '?',
-      rsOptVar = '[' + rsVarRange + ']?',
-      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
-      rsSeq = rsOptVar + reOptMod + rsOptJoin,
-      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
-
-  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
-  var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+define(['./_asciiToArray', './_hasUnicode', './_unicodeToArray'], function(asciiToArray, hasUnicode, unicodeToArray) {
 
   /**
    * Converts `string` to an array.
@@ -34,7 +8,9 @@ define([], function() {
    * @returns {Array} Returns the converted array.
    */
   function stringToArray(string) {
-    return string.match(reComplexSymbol);
+    return hasUnicode(string)
+      ? unicodeToArray(string)
+      : asciiToArray(string);
   }
 
   return stringToArray;

_stringToPath.js

@@ -1,7 +1,8 @@
 define(['./memoize', './toString'], function(memoize, toString) {
 
   /** Used to match property names within property paths. */
-  var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(\.|\[\])(?:\4|$))/g;
+  var reLeadingDot = /^\./,
+      rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
 
   /** Used to match backslashes in property paths. */
   var reEscapeChar = /\\(\\)?/g;
@@ -14,8 +15,13 @@ define(['./memoize', './toString'], function(memoize, toString) {
    * @returns {Array} Returns the property path array.
    */
   var stringToPath = memoize(function(string) {
+    string = toString(string);
+
     var result = [];
-    toString(string).replace(rePropName, function(match, number, quote, string) {
+    if (reLeadingDot.test(string)) {
+      result.push('');
+    }
+    string.replace(rePropName, function(match, number, quote, string) {
       result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
     });
     return result;

_toSource.js

@@ -1,7 +1,10 @@
 define([], function() {
 
+  /** Used for built-in method references. */
+  var funcProto = Function.prototype;
+
   /** Used to resolve the decompiled source of functions. */
-  var funcToString = Function.prototype.toString;
+  var funcToString = funcProto.toString;
 
   /**
    * Converts `func` to its source code.

_unicodeSize.js

@@ -0,0 +1,45 @@
+define([], function() {
+
+  /** Used to compose unicode character classes. */
+  var rsAstralRange = '\\ud800-\\udfff',
+      rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+      rsComboSymbolsRange = '\\u20d0-\\u20f0',
+      rsVarRange = '\\ufe0e\\ufe0f';
+
+  /** Used to compose unicode capture groups. */
+  var rsAstral = '[' + rsAstralRange + ']',
+      rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+      rsFitz = '\\ud83c[\\udffb-\\udfff]',
+      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+      rsNonAstral = '[^' + rsAstralRange + ']',
+      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+      rsZWJ = '\\u200d';
+
+  /** Used to compose unicode regexes. */
+  var reOptMod = rsModifier + '?',
+      rsOptVar = '[' + rsVarRange + ']?',
+      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+      rsSeq = rsOptVar + reOptMod + rsOptJoin,
+      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
+
+  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
+  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+
+  /**
+   * Gets the size of a Unicode `string`.
+   *
+   * @private
+   * @param {string} string The string inspect.
+   * @returns {number} Returns the string size.
+   */
+  function unicodeSize(string) {
+    var result = reUnicode.lastIndex = 0;
+    while (reUnicode.test(string)) {
+      result++;
+    }
+    return result;
+  }
+
+  return unicodeSize;
+});

_unicodeToArray.js

@@ -0,0 +1,41 @@
+define([], function() {
+
+  /** Used to compose unicode character classes. */
+  var rsAstralRange = '\\ud800-\\udfff',
+      rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+      rsComboSymbolsRange = '\\u20d0-\\u20f0',
+      rsVarRange = '\\ufe0e\\ufe0f';
+
+  /** Used to compose unicode capture groups. */
+  var rsAstral = '[' + rsAstralRange + ']',
+      rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+      rsFitz = '\\ud83c[\\udffb-\\udfff]',
+      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+      rsNonAstral = '[^' + rsAstralRange + ']',
+      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+      rsZWJ = '\\u200d';
+
+  /** Used to compose unicode regexes. */
+  var reOptMod = rsModifier + '?',
+      rsOptVar = '[' + rsVarRange + ']?',
+      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+      rsSeq = rsOptVar + reOptMod + rsOptJoin,
+      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
+
+  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
+  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+
+  /**
+   * Converts a Unicode `string` to an array.
+   *
+   * @private
+   * @param {string} string The string to convert.
+   * @returns {Array} Returns the converted array.
+   */
+  function unicodeToArray(string) {
+    return string.match(reUnicode) || [];
+  }
+
+  return unicodeToArray;
+});

_unicodeWords.js

@@ -0,0 +1,66 @@
+define([], function() {
+
+  /** Used to compose unicode character classes. */
+  var rsAstralRange = '\\ud800-\\udfff',
+      rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+      rsComboSymbolsRange = '\\u20d0-\\u20f0',
+      rsDingbatRange = '\\u2700-\\u27bf',
+      rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
+      rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
+      rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
+      rsPunctuationRange = '\\u2000-\\u206f',
+      rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
+      rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
+      rsVarRange = '\\ufe0e\\ufe0f',
+      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
+
+  /** Used to compose unicode capture groups. */
+  var rsApos = "['\u2019]",
+      rsBreak = '[' + rsBreakRange + ']',
+      rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+      rsDigits = '\\d+',
+      rsDingbat = '[' + rsDingbatRange + ']',
+      rsLower = '[' + rsLowerRange + ']',
+      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
+      rsFitz = '\\ud83c[\\udffb-\\udfff]',
+      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+      rsNonAstral = '[^' + rsAstralRange + ']',
+      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+      rsUpper = '[' + rsUpperRange + ']',
+      rsZWJ = '\\u200d';
+
+  /** Used to compose unicode regexes. */
+  var rsLowerMisc = '(?:' + rsLower + '|' + rsMisc + ')',
+      rsUpperMisc = '(?:' + rsUpper + '|' + rsMisc + ')',
+      rsOptLowerContr = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
+      rsOptUpperContr = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
+      reOptMod = rsModifier + '?',
+      rsOptVar = '[' + rsVarRange + ']?',
+      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+      rsSeq = rsOptVar + reOptMod + rsOptJoin,
+      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq;
+
+  /** Used to match complex or compound words. */
+  var reUnicodeWord = RegExp([
+    rsUpper + '?' + rsLower + '+' + rsOptLowerContr + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
+    rsUpperMisc + '+' + rsOptUpperContr + '(?=' + [rsBreak, rsUpper + rsLowerMisc, '$'].join('|') + ')',
+    rsUpper + '?' + rsLowerMisc + '+' + rsOptLowerContr,
+    rsUpper + '+' + rsOptUpperContr,
+    rsDigits,
+    rsEmoji
+  ].join('|'), 'g');
+
+  /**
+   * Splits a Unicode `string` into an array of its words.
+   *
+   * @private
+   * @param {string} The string to inspect.
+   * @returns {Array} Returns the words of `string`.
+   */
+  function unicodeWords(string) {
+    return string.match(reUnicodeWord) || [];
+  }
+
+  return unicodeWords;
+});

assignIn.js

@@ -1,13 +1,4 @@
-define(['./_assignValue', './_copyObject', './_createAssigner', './isArrayLike', './_isPrototype', './keysIn'], function(assignValue, copyObject, createAssigner, isArrayLike, isPrototype, keysIn) {
-
-  /** Used for built-in method references. */
-  var objectProto = Object.prototype;
-
-  /** Built-in value references. */
-  var propertyIsEnumerable = objectProto.propertyIsEnumerable;
-
-  /** Detect if properties shadowing those on `Object.prototype` are non-enumerable. */
-  var nonEnumShadows = !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf');
+define(['./_copyObject', './_createAssigner', './keysIn'], function(copyObject, createAssigner, keysIn) {
 
   /**
    * This method is like `_.assign` except that it iterates over own and
@@ -41,13 +32,7 @@ define(['./_assignValue', './_copyObject', './_createAssigner', './isArrayLike',
    * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
    */
   var assignIn = createAssigner(function(object, source) {
-    if (nonEnumShadows || isPrototype(source) || isArrayLike(source)) {
-      copyObject(source, keysIn(source), object);
-      return;
-    }
-    for (var key in source) {
-      assignValue(object, key, source[key]);
-    }
+    copyObject(source, keysIn(source), object);
   });
 
   return assignIn;

conforms.js

@@ -5,6 +5,9 @@ define(['./_baseClone', './_baseConforms'], function(baseClone, baseConforms) {
    * the corresponding property values of a given object, returning `true` if
    * all predicates return truthy, else `false`.
    *
+   * **Note:** The created function is equivalent to `_.conformsTo` with
+   * `source` partially applied.
+   *
    * @static
    * @memberOf _
    * @since 4.0.0

conformsTo.js

@@ -1,9 +1,11 @@
 define(['./_baseConformsTo', './keys'], function(baseConformsTo, keys) {
 
   /**
-   * Checks if `object` conforms to `source` by invoking the predicate properties
-   * of `source` with the corresponding property values of `object`. This method
-   * is equivalent to a `_.conforms` function when `source` is partially applied.
+   * Checks if `object` conforms to `source` by invoking the predicate
+   * properties of `source` with the corresponding property values of `object`.
+   *
+   * **Note:** This method is equivalent to `_.conforms` when `source` is
+   * partially applied.
    *
    * @static
    * @memberOf _

debounce.js

@@ -15,14 +15,18 @@ define(['./isObject', './now', './toNumber'], function(isObject, now, toNumber)
    * milliseconds have elapsed since the last time the debounced function was
    * invoked. The debounced function comes with a `cancel` method to cancel
    * delayed `func` invocations and a `flush` method to immediately invoke them.
-   * Provide an options object to indicate whether `func` should be invoked on
-   * the leading and/or trailing edge of the `wait` timeout. The `func` is invoked
-   * with the last arguments provided to the debounced function. Subsequent calls
-   * to the debounced function return the result of the last `func` invocation.
+   * Provide `options` to indicate whether `func` should be invoked on the
+   * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
+   * with the last arguments provided to the debounced function. Subsequent
+   * calls to the debounced function return the result of the last `func`
+   * invocation.
    *
-   * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
-   * on the trailing edge of the timeout only if the debounced function is
-   * invoked more than once during the `wait` timeout.
+   * **Note:** If `leading` and `trailing` options are `true`, `func` is
+   * invoked on the trailing edge of the timeout only if the debounced function
+   * is invoked more than once during the `wait` timeout.
+   *
+   * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
+   * until to the next tick, similar to `setTimeout` with a timeout of `0`.
    *
    * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
    * for details over the differences between `_.debounce` and `_.throttle`.

deburr.js

@@ -1,7 +1,7 @@
 define(['./_deburrLetter', './toString'], function(deburrLetter, toString) {
 
-  /** Used to match latin-1 supplementary letters (excluding mathematical operators). */
-  var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g;
+  /** Used to match Latin Unicode letters (excluding mathematical operators). */
+  var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
 
   /** Used to compose unicode character classes. */
   var rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
@@ -18,8 +18,9 @@ define(['./_deburrLetter', './toString'], function(deburrLetter, toString) {
 
   /**
    * Deburrs `string` by converting
-   * [latin-1 supplementary letters](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
-   * to basic latin letters and removing
+   * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
+   * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
+   * letters to basic Latin letters and removing
    * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
    *
    * @static
@@ -35,7 +36,7 @@ define(['./_deburrLetter', './toString'], function(deburrLetter, toString) {
    */
   function deburr(string) {
     string = toString(string);
-    return string && string.replace(reLatin1, deburrLetter).replace(reComboMark, '');
+    return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
   }
 
   return deburr;

difference.js

@@ -2,7 +2,7 @@ define(['./_baseDifference', './_baseFlatten', './_baseRest', './isArrayLikeObje
 
   /**
    * Creates an array of `array` values not included in the other given arrays
-   * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
    * for equality comparisons. The order of result values is determined by the
    * order they occur in the first array.
    *

endsWith.js

@@ -10,7 +10,7 @@ define(['./_baseClamp', './_baseToString', './toInteger', './toString'], functio
    * @memberOf _
    * @since 3.0.0
    * @category String
-   * @param {string} [string=''] The string to search.
+   * @param {string} [string=''] The string to inspect.
    * @param {string} [target] The string to search for.
    * @param {number} [position=string.length] The position to search up to.
    * @returns {boolean} Returns `true` if `string` ends with `target`,

eq.js

@@ -2,7 +2,7 @@ define([], function() {
 
   /**
    * Performs a
-   * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
    * comparison between two values to determine if they are equivalent.
    *
    * @static

escapeRegExp.js

@@ -2,7 +2,7 @@ define(['./toString'], function(toString) {
 
   /**
    * Used to match `RegExp`
-   * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).
+   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
    */
   var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
       reHasRegExpChar = RegExp(reRegExpChar.source);

every.js

@@ -8,6 +8,11 @@ define(['./_arrayEvery', './_baseEvery', './_baseIteratee', './isArray', './_isI
    * Iteration is stopped once `predicate` returns falsey. The predicate is
    * invoked with three arguments: (value, index|key, collection).
    *
+   * **Note:** This method returns `true` for
+   * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
+   * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
+   * elements of empty collections.
+   *
    * @static
    * @memberOf _
    * @since 0.1.0

find.js

@@ -9,7 +9,7 @@ define(['./_createFind', './findIndex'], function(createFind, findIndex) {
    * @memberOf _
    * @since 0.1.0
    * @category Collection
-   * @param {Array|Object} collection The collection to search.
+   * @param {Array|Object} collection The collection to inspect.
    * @param {Function} [predicate=_.identity]
    *  The function invoked per iteration.
    * @param {number} [fromIndex=0] The index to search from.

findIndex.js

@@ -11,7 +11,7 @@ define(['./_baseFindIndex', './_baseIteratee', './toInteger'], function(baseFind
    * @memberOf _
    * @since 1.1.0
    * @category Array
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {Function} [predicate=_.identity]
    *  The function invoked per iteration.
    * @param {number} [fromIndex=0] The index to search from.

findKey.js

@@ -8,7 +8,7 @@ define(['./_baseFindKey', './_baseForOwn', './_baseIteratee'], function(baseFind
    * @memberOf _
    * @since 1.1.0
    * @category Object
-   * @param {Object} object The object to search.
+   * @param {Object} object The object to inspect.
    * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @returns {string|undefined} Returns the key of the matched element,
    *  else `undefined`.

findLast.js

@@ -8,7 +8,7 @@ define(['./_createFind', './findLastIndex'], function(createFind, findLastIndex)
    * @memberOf _
    * @since 2.0.0
    * @category Collection
-   * @param {Array|Object} collection The collection to search.
+   * @param {Array|Object} collection The collection to inspect.
    * @param {Function} [predicate=_.identity]
    *  The function invoked per iteration.
    * @param {number} [fromIndex=collection.length-1] The index to search from.

findLastIndex.js

@@ -15,7 +15,7 @@ define(['./_baseFindIndex', './_baseIteratee', './toInteger'], function(baseFind
    * @memberOf _
    * @since 2.0.0
    * @category Array
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {Function} [predicate=_.identity]
    *  The function invoked per iteration.
    * @param {number} [fromIndex=array.length-1] The index to search from.

findLastKey.js

@@ -8,7 +8,7 @@ define(['./_baseFindKey', './_baseForOwnRight', './_baseIteratee'], function(bas
    * @memberOf _
    * @since 2.0.0
    * @category Object
-   * @param {Object} object The object to search.
+   * @param {Object} object The object to inspect.
    * @param {Function} [predicate=_.identity] The function invoked per iteration.
    * @returns {string|undefined} Returns the key of the matched element,
    *  else `undefined`.

inRange.js

@@ -1,4 +1,4 @@
-define(['./_baseInRange', './toNumber'], function(baseInRange, toNumber) {
+define(['./_baseInRange', './toFinite', './toNumber'], function(baseInRange, toFinite, toNumber) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
@@ -42,12 +42,12 @@ define(['./_baseInRange', './toNumber'], function(baseInRange, toNumber) {
    * // => true
    */
   function inRange(number, start, end) {
-    start = toNumber(start) || 0;
+    start = toFinite(start);
     if (end === undefined) {
       end = start;
       start = 0;
     } else {
-      end = toNumber(end) || 0;
+      end = toFinite(end);
     }
     number = toNumber(number);
     return baseInRange(number, start, end);

includes.js

@@ -6,7 +6,7 @@ define(['./_baseIndexOf', './isArrayLike', './isString', './toInteger', './value
   /**
    * Checks if `value` is in `collection`. If `collection` is a string, it's
    * checked for a substring of `value`, otherwise
-   * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
    * is used for equality comparisons. If `fromIndex` is negative, it's used as
    * the offset from the end of `collection`.
    *
@@ -14,7 +14,7 @@ define(['./_baseIndexOf', './isArrayLike', './isString', './toInteger', './value
    * @memberOf _
    * @since 0.1.0
    * @category Collection
-   * @param {Array|Object|string} collection The collection to search.
+   * @param {Array|Object|string} collection The collection to inspect.
    * @param {*} value The value to search for.
    * @param {number} [fromIndex=0] The index to search from.
    * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.

indexOf.js

@@ -5,7 +5,7 @@ define(['./_baseIndexOf', './toInteger'], function(baseIndexOf, toInteger) {
 
   /**
    * Gets the index at which the first occurrence of `value` is found in `array`
-   * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
    * for equality comparisons. If `fromIndex` is negative, it's used as the
    * offset from the end of `array`.
    *
@@ -13,7 +13,7 @@ define(['./_baseIndexOf', './toInteger'], function(baseIndexOf, toInteger) {
    * @memberOf _
    * @since 0.1.0
    * @category Array
-   * @param {Array} array The array to search.
+   * @param {Array} array The array to inspect.
    * @param {*} value The value to search for.
    * @param {number} [fromIndex=0] The index to search from.
    * @returns {number} Returns the index of the matched value, else `-1`.

initial.js

@@ -1,4 +1,4 @@
-define(['./dropRight'], function(dropRight) {
+define(['./_baseSlice'], function(baseSlice) {
 
   /**
    * Gets all but the last element of `array`.
@@ -15,7 +15,8 @@ define(['./dropRight'], function(dropRight) {
    * // => [1, 2]
    */
   function initial(array) {
-    return dropRight(array, 1);
+    var length = array ? array.length : 0;
+    return length ? baseSlice(array, 0, -1) : [];
   }
 
   return initial;

intersection.js

@@ -2,7 +2,7 @@ define(['./_arrayMap', './_baseIntersection', './_baseRest', './_castArrayLikeOb
 
   /**
    * Creates an array of unique values that are included in all given arrays
-   * using [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+   * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
    * for equality comparisons. The order of result values is determined by the
    * order they occur in the first array.
    *

isArguments.js

@@ -11,7 +11,7 @@ define(['./isArrayLikeObject'], function(isArrayLikeObject) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;
@@ -38,7 +38,7 @@ define(['./isArrayLikeObject'], function(isArrayLikeObject) {
    * // => false
    */
   function isArguments(value) {
-    // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.
+    // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
     return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
       (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
   }

isArrayLike.js

@@ -1,4 +1,4 @@
-define(['./_getLength', './isFunction', './isLength'], function(getLength, isFunction, isLength) {
+define(['./isFunction', './isLength'], function(isFunction, isLength) {
 
   /**
    * Checks if `value` is array-like. A value is considered array-like if it's
@@ -26,7 +26,7 @@ define(['./_getLength', './isFunction', './isLength'], function(getLength, isFun
    * // => false
    */
   function isArrayLike(value) {
-    return value != null && isLength(getLength(value)) && !isFunction(value);
+    return value != null && isLength(value.length) && !isFunction(value);
   }
 
   return isArrayLike;

isBoolean.js

@@ -8,7 +8,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

isBuffer.js

@@ -1,13 +1,13 @@
-define(['./_freeGlobal', './_root', './stubFalse'], function(freeGlobal, root, stubFalse) {
+define(['./_root', './stubFalse'], function(root, stubFalse) {
 
   /** Used as a safe reference for `undefined` in pre-ES5 environments. */
   var undefined;
 
   /** Detect free variable `exports`. */
-  var freeExports = freeGlobal && typeof exports == 'object' && exports;
+  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
 
   /** Detect free variable `module`. */
-  var freeModule = freeExports && typeof module == 'object' && module;
+  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
 
   /** Detect the popular CommonJS extension `module.exports`. */
   var moduleExports = freeModule && freeModule.exports === freeExports;

isElement.js

@@ -8,8 +8,7 @@ define(['./isObjectLike', './isPlainObject'], function(isObjectLike, isPlainObje
    * @since 0.1.0
    * @category Lang
    * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is a DOM element,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
    * @example
    *
    * _.isElement(document.body);

isEmpty.js

@@ -1,4 +1,4 @@
-define(['./_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer', './isFunction', './isObjectLike', './isString', './keys'], function(getTag, isArguments, isArray, isArrayLike, isBuffer, isFunction, isObjectLike, isString, keys) {
+define(['./_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer', './_isPrototype', './_nativeKeys'], function(getTag, isArguments, isArray, isArrayLike, isBuffer, isPrototype, nativeKeys) {
 
   /** `Object#toString` result references. */
   var mapTag = '[object Map]',
@@ -51,22 +51,23 @@ define(['./_getTag', './isArguments', './isArray', './isArrayLike', './isBuffer'
    */
   function isEmpty(value) {
     if (isArrayLike(value) &&
-        (isArray(value) || isString(value) || isFunction(value.splice) ||
-          isArguments(value) || isBuffer(value))) {
+        (isArray(value) || typeof value == 'string' ||
+          typeof value.splice == 'function' || isBuffer(value) || isArguments(value))) {
       return !value.length;
     }
-    if (isObjectLike(value)) {
-      var tag = getTag(value);
-      if (tag == mapTag || tag == setTag) {
-        return !value.size;
-      }
+    var tag = getTag(value);
+    if (tag == mapTag || tag == setTag) {
+      return !value.size;
+    }
+    if (nonEnumShadows || isPrototype(value)) {
+      return !nativeKeys(value).length;
     }
     for (var key in value) {
       if (hasOwnProperty.call(value, key)) {
         return false;
       }
     }
-    return !(nonEnumShadows && keys(value).length);
+    return true;
   }
 
   return isEmpty;

isEqual.js

@@ -16,8 +16,7 @@ define(['./_baseIsEqual'], function(baseIsEqual) {
    * @category Lang
    * @param {*} value The value to compare.
    * @param {*} other The other value to compare.
-   * @returns {boolean} Returns `true` if the values are equivalent,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
    * @example
    *
    * var object = { 'a': 1 };

isEqualWith.js

@@ -16,8 +16,7 @@ define(['./_baseIsEqual'], function(baseIsEqual) {
    * @param {*} value The value to compare.
    * @param {*} other The other value to compare.
    * @param {Function} [customizer] The function to customize comparisons.
-   * @returns {boolean} Returns `true` if the values are equivalent,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
    * @example
    *
    * function isGreeting(value) {

isError.js

@@ -8,7 +8,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;
@@ -22,8 +22,7 @@ define(['./isObjectLike'], function(isObjectLike) {
    * @since 3.0.0
    * @category Lang
    * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is an error object,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
    * @example
    *
    * _.isError(new Error);

isFinite.js

@@ -14,8 +14,7 @@ define(['./_root'], function(root) {
    * @since 0.1.0
    * @category Lang
    * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is a finite number,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
    * @example
    *
    * _.isFinite(3);

isFunction.js

@@ -9,7 +9,7 @@ define(['./isObject'], function(isObject) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;
@@ -33,8 +33,7 @@ define(['./isObject'], function(isObject) {
    */
   function isFunction(value) {
     // The use of `Object#toString` avoids issues with the `typeof` operator
-    // in Safari 8 which returns 'object' for typed array and weak map constructors,
-    // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.
+    // in Safari 8-9 which returns 'object' for typed array and other constructors.
     var tag = isObject(value) ? objectToString.call(value) : '';
     return tag == funcTag || tag == genTag;
   }

isLength.js

@@ -6,16 +6,15 @@ define([], function() {
   /**
    * Checks if `value` is a valid array-like length.
    *
-   * **Note:** This function is loosely based on
-   * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
+   * **Note:** This method is loosely based on
+   * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
    *
    * @static
    * @memberOf _
    * @since 4.0.0
    * @category Lang
    * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is a valid length,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
    * @example
    *
    * _.isLength(3);

isMatch.js

@@ -2,10 +2,14 @@ define(['./_baseIsMatch', './_getMatchData'], function(baseIsMatch, getMatchData
 
   /**
    * Performs a partial deep comparison between `object` and `source` to
-   * determine if `object` contains equivalent property values. This method is
-   * equivalent to a `_.matches` function when `source` is partially applied.
+   * determine if `object` contains equivalent property values.
    *
-   * **Note:** This method supports comparing the same values as `_.isEqual`.
+   * **Note:** This method is equivalent to `_.matches` when `source` is
+   * partially applied.
+   *
+   * Partial comparisons will match empty array and empty object `source`
+   * values against any array or object value, respectively. See `_.isEqual`
+   * for a list of supported value comparisons.
    *
    * @static
    * @memberOf _

isNumber.js

@@ -8,7 +8,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

isObject.js

@@ -2,7 +2,7 @@ define([], function() {
 
   /**
    * Checks if `value` is the
-   * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)
+   * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
    * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
    *
    * @static

isPlainObject.js

@@ -4,10 +4,11 @@ define(['./_getPrototype', './_isHostObject', './isObjectLike'], function(getPro
   var objectTag = '[object Object]';
 
   /** Used for built-in method references. */
-  var objectProto = Object.prototype;
+  var funcProto = Function.prototype,
+      objectProto = Object.prototype;
 
   /** Used to resolve the decompiled source of functions. */
-  var funcToString = Function.prototype.toString;
+  var funcToString = funcProto.toString;
 
   /** Used to check objects for own properties. */
   var hasOwnProperty = objectProto.hasOwnProperty;
@@ -17,7 +18,7 @@ define(['./_getPrototype', './_isHostObject', './isObjectLike'], function(getPro
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;
@@ -31,8 +32,7 @@ define(['./_getPrototype', './_isHostObject', './isObjectLike'], function(getPro
    * @since 0.8.0
    * @category Lang
    * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is a plain object,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
    * @example
    *
    * function Foo() {

isSafeInteger.js

@@ -15,8 +15,7 @@ define(['./isInteger'], function(isInteger) {
    * @since 4.0.0
    * @category Lang
    * @param {*} value The value to check.
-   * @returns {boolean} Returns `true` if `value` is a safe integer,
-   *  else `false`.
+   * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
    * @example
    *
    * _.isSafeInteger(3);

isString.js

@@ -8,7 +8,7 @@ define(['./isArray', './isObjectLike'], function(isArray, isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

isSymbol.js

@@ -8,7 +8,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

isWeakSet.js

@@ -8,7 +8,7 @@ define(['./isObjectLike'], function(isObjectLike) {
 
   /**
    * Used to resolve the
-   * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
    * of values.
    */
   var objectToString = objectProto.toString;

keys.js

@@ -1,10 +1,10 @@
-define(['./_baseHas', './_baseKeys', './_indexKeys', './isArrayLike', './_isIndex', './_isPrototype'], function(baseHas, baseKeys, indexKeys, isArrayLike, isIndex, isPrototype) {
+define(['./_arrayLikeKeys', './_baseKeys', './isArrayLike'], function(arrayLikeKeys, baseKeys, isArrayLike) {
 
   /**
    * Creates an array of the own enumerable property names of `object`.
    *
    * **Note:** Non-object values are coerced to objects. See the
-   * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
+   * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
    * for more details.
    *
    * @static
@@ -29,23 +29,7 @@ define(['./_baseHas', './_baseKeys', './_indexKeys', './isArrayLike', './_isInde
    * // => ['0', '1']
    */
   function keys(object) {
-    var isProto = isPrototype(object);
-    if (!(isProto || isArrayLike(object))) {
-      return baseKeys(object);
-    }
-    var indexes = indexKeys(object),
-        skipIndexes = !!indexes,
-        result = indexes || [],
-        length = result.length;
-
-    for (var key in object) {
-      if (baseHas(object, key) &&
-          !(skipIndexes && (key == 'length' || isIndex(key, length))) &&
-          !(isProto && key == 'constructor')) {
-        result.push(key);
-      }
-    }
-    return result;
+    return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
   }
 
   return keys;