Bump to v4.10.0.

README.md

@@ -1,4 +1,4 @@
-# lodash-es v4.8.2
+# lodash-es v4.10.0
 
 The [Lodash](https://lodash.com/) library exported as [ES](http://www.ecma-international.org/ecma-262/6.0/) modules.
 
@@ -7,4 +7,4 @@ Generated using [lodash-cli](https://www.npmjs.com/package/lodash-cli):
 $ lodash modularize exports=es -o ./
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.8.2-es) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.10.0-es) for more details.

_Hash.js

@@ -4,7 +4,7 @@ import nativeCreate from './_nativeCreate';
 var objectProto = Object.prototype;
 
 /**
- * Creates an hash object.
+ * Creates a hash object.
  *
  * @private
  * @constructor

_baseFlatten.js

@@ -1,7 +1,5 @@
 import arrayPush from './_arrayPush';
-import isArguments from './isArguments';
-import isArray from './isArray';
-import isArrayLikeObject from './isArrayLikeObject';
+import isFlattenable from './_isFlattenable';
 
 /**
  * The base implementation of `_.flatten` with support for restricting flattening.
@@ -9,23 +7,24 @@ import isArrayLikeObject from './isArrayLikeObject';
  * @private
  * @param {Array} array The array to flatten.
  * @param {number} depth The maximum recursion depth.
- * @param {boolean} [isStrict] Restrict flattening to arrays-like objects.
+ * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
+ * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
  * @param {Array} [result=[]] The initial result value.
  * @returns {Array} Returns the new flattened array.
  */
-function baseFlatten(array, depth, isStrict, result) {
-  result || (result = []);
-
+function baseFlatten(array, depth, predicate, isStrict, result) {
   var index = -1,
       length = array.length;
 
+  predicate || (predicate = isFlattenable);
+  result || (result = []);
+
   while (++index < length) {
     var value = array[index];
-    if (depth > 0 && isArrayLikeObject(value) &&
-        (isStrict || isArray(value) || isArguments(value))) {
+    if (depth > 0 && predicate(value)) {
       if (depth > 1) {
         // Recursively flatten arrays (susceptible to call stack limits).
-        baseFlatten(value, depth - 1, isStrict, result);
+        baseFlatten(value, depth - 1, predicate, isStrict, result);
       } else {
         arrayPush(result, value);
       }

_baseFor.js

@@ -2,7 +2,7 @@ import createBaseFor from './_createBaseFor';
 
 /**
  * The base implementation of `baseForOwn` which iterates over `object`
- * properties returned by `keysFunc` invoking `iteratee` for each property.
+ * properties returned by `keysFunc` and invokes `iteratee` for each property.
  * Iteratee functions may exit iteration early by explicitly returning `false`.
  *
  * @private

_baseGet.js

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

_baseInvoke.js

@@ -1,5 +1,5 @@
 import apply from './_apply';
-import baseCastPath from './_baseCastPath';
+import castPath from './_castPath';
 import isKey from './_isKey';
 import last from './last';
 import parent from './_parent';
@@ -16,7 +16,7 @@ import parent from './_parent';
  */
 function baseInvoke(object, path, args) {
   if (!isKey(path, object)) {
-    path = baseCastPath(path);
+    path = castPath(path);
     object = parent(object, path);
     path = last(path);
   }

_basePullAt.js

@@ -1,4 +1,4 @@
-import baseCastPath from './_baseCastPath';
+import castPath from './_castPath';
 import isIndex from './_isIndex';
 import isKey from './_isKey';
 import last from './last';
@@ -31,7 +31,7 @@ function basePullAt(array, indexes) {
         splice.call(array, index, 1);
       }
       else if (!isKey(index, array)) {
-        var path = baseCastPath(index),
+        var path = castPath(index),
             object = parent(array, path);
 
         if (object != null) {

_baseSet.js

@@ -1,5 +1,5 @@
 import assignValue from './_assignValue';
-import baseCastPath from './_baseCastPath';
+import castPath from './_castPath';
 import isIndex from './_isIndex';
 import isKey from './_isKey';
 import isObject from './isObject';
@@ -15,7 +15,7 @@ import isObject from './isObject';
  * @returns {Object} Returns `object`.
  */
 function baseSet(object, path, value, customizer) {
-  path = isKey(path, object) ? [path] : baseCastPath(path);
+  path = isKey(path, object) ? [path] : castPath(path);
 
   var index = -1,
       length = path.length,

_baseUnset.js

@@ -1,4 +1,4 @@
-import baseCastPath from './_baseCastPath';
+import castPath from './_castPath';
 import has from './has';
 import isKey from './_isKey';
 import last from './last';
@@ -13,7 +13,7 @@ import parent from './_parent';
  * @returns {boolean} Returns `true` if the property is deleted, else `false`.
  */
 function baseUnset(object, path) {
-  path = isKey(path, object) ? [path] : baseCastPath(path);
+  path = isKey(path, object) ? [path] : castPath(path);
   object = parent(object, path);
   var key = last(path);
   return (object != null && has(object, key)) ? delete object[key] : true;

_castArrayLikeObject.js

@@ -7,8 +7,8 @@ import isArrayLikeObject from './isArrayLikeObject';
  * @param {*} value The value to inspect.
  * @returns {Array|Object} Returns the cast array-like object.
  */
-function baseCastArrayLikeObject(value) {
+function castArrayLikeObject(value) {
   return isArrayLikeObject(value) ? value : [];
 }
 
-export default baseCastArrayLikeObject;
+export default castArrayLikeObject;

_castFunction.js

@@ -7,8 +7,8 @@ import identity from './identity';
  * @param {*} value The value to inspect.
  * @returns {Function} Returns cast function.
  */
-function baseCastFunction(value) {
+function castFunction(value) {
   return typeof value == 'function' ? value : identity;
 }
 
-export default baseCastFunction;
+export default castFunction;

_castPath.js

@@ -8,8 +8,8 @@ import stringToPath from './_stringToPath';
  * @param {*} value The value to inspect.
  * @returns {Array} Returns the cast property path array.
  */
-function baseCastPath(value) {
+function castPath(value) {
   return isArray(value) ? value : stringToPath(value);
 }
 
-export default baseCastPath;
+export default castPath;

_castSlice.js

@@ -0,0 +1,18 @@
+import baseSlice from './_baseSlice';
+
+/**
+ * Casts `array` to a slice if it's needed.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {number} start The start position.
+ * @param {number} [end=array.length] The end position.
+ * @returns {Array} Returns the cast slice.
+ */
+function castSlice(array, start, end) {
+  var length = array.length;
+  end = end === undefined ? length : end;
+  return (!start && end >= length) ? array : baseSlice(array, start, end);
+}
+
+export default castSlice;

_createCaseFirst.js

@@ -1,18 +1,8 @@
+import castSlice from './_castSlice';
+import reHasComplexSymbol from './_reHasComplexSymbol';
 import stringToArray from './_stringToArray';
 import toString from './toString';
 
-/** 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 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 + ']');
-
 /**
  * Creates a function like `_.lowerFirst`.
  *
@@ -28,8 +18,13 @@ function createCaseFirst(methodName) {
       ? stringToArray(string)
       : undefined;
 
-    var chr = strSymbols ? strSymbols[0] : string.charAt(0),
-        trailing = strSymbols ? strSymbols.slice(1).join('') : string.slice(1);
+    var chr = strSymbols
+      ? strSymbols[0]
+      : string.charAt(0);
+
+    var trailing = strSymbols
+      ? castSlice(strSymbols, 1).join('')
+      : string.slice(1);
 
     return chr[methodName]() + trailing;
   };

_createOver.js

@@ -2,6 +2,7 @@ import apply from './_apply';
 import arrayMap from './_arrayMap';
 import baseFlatten from './_baseFlatten';
 import baseIteratee from './_baseIteratee';
+import isFlattenableIteratee from './_isFlattenableIteratee';
 import rest from './rest';
 
 /**
@@ -13,7 +14,7 @@ import rest from './rest';
  */
 function createOver(arrayFunc) {
   return rest(function(iteratees) {
-    iteratees = arrayMap(baseFlatten(iteratees, 1), baseIteratee);
+    iteratees = arrayMap(baseFlatten(iteratees, 1, isFlattenableIteratee), baseIteratee);
     return rest(function(args) {
       var thisArg = this;
       return arrayFunc(iteratees, function(iteratee) {

_createPadding.js

@@ -1,19 +1,9 @@
 import baseRepeat from './_baseRepeat';
+import castSlice from './_castSlice';
+import reHasComplexSymbol from './_reHasComplexSymbol';
 import stringSize from './_stringSize';
 import stringToArray from './_stringToArray';
 
-/** 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 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 + ']');
-
 /* Built-in method references for those with the same name as other `lodash` methods. */
 var nativeCeil = Math.ceil;
 
@@ -35,7 +25,7 @@ function createPadding(length, chars) {
   }
   var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
   return reHasComplexSymbol.test(chars)
-    ? stringToArray(result).slice(0, length).join('')
+    ? castSlice(stringToArray(result), 0, length).join('')
     : result.slice(0, length);
 }
 

_getTag.js

@@ -51,8 +51,8 @@ if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
     (WeakMap && getTag(new WeakMap) != weakMapTag)) {
   getTag = function(value) {
     var result = objectToString.call(value),
-        Ctor = result == objectTag ? value.constructor : null,
-        ctorString = toSource(Ctor);
+        Ctor = result == objectTag ? value.constructor : undefined,
+        ctorString = Ctor ? toSource(Ctor) : undefined;
 
     if (ctorString) {
       switch (ctorString) {

_hasPath.js

@@ -1,4 +1,4 @@
-import baseCastPath from './_baseCastPath';
+import castPath from './_castPath';
 import isArguments from './isArguments';
 import isArray from './isArray';
 import isIndex from './_isIndex';
@@ -16,7 +16,7 @@ import isString from './isString';
  * @returns {boolean} Returns `true` if `path` exists, else `false`.
  */
 function hasPath(object, path, hasFunc) {
-  path = isKey(path, object) ? [path] : baseCastPath(path);
+  path = isKey(path, object) ? [path] : castPath(path);
 
   var result,
       index = -1,

_isFlattenable.js

@@ -0,0 +1,16 @@
+import isArguments from './isArguments';
+import isArray from './isArray';
+import isArrayLikeObject from './isArrayLikeObject';
+
+/**
+ * Checks if `value` is a flattenable `arguments` object or array.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
+ */
+function isFlattenable(value) {
+  return isArrayLikeObject(value) && (isArray(value) || isArguments(value));
+}
+
+export default isFlattenable;

_isFlattenableIteratee.js

@@ -0,0 +1,16 @@
+import isArray from './isArray';
+import isFunction from './isFunction';
+
+/**
+ * Checks if `value` is a flattenable array and not a `_.matchesProperty`
+ * iteratee shorthand.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
+ */
+function isFlattenableIteratee(value) {
+  return isArray(value) && !(value.length == 2 && !isFunction(value[0]));
+}
+
+export default isFlattenableIteratee;

_reHasComplexSymbol.js

@@ -0,0 +1,13 @@
+/** 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 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 + ']');
+
+export default reHasComplexSymbol;

_stringSize.js

@@ -1,3 +1,5 @@
+import reHasComplexSymbol from './_reHasComplexSymbol';
+
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
     rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
@@ -24,9 +26,6 @@ var reOptMod = rsModifier + '?',
 /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
 var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
 
-/** 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 + ']');
-
 /**
  * Gets the number of symbols in `string`.
  *

_toKey.js

@@ -1,14 +1,14 @@
 import isSymbol from './isSymbol';
 
 /**
- * Casts `value` to a string if it's not a string or symbol.
+ * Converts `value` to a string key if it's not a string or symbol.
  *
  * @private
  * @param {*} value The value to inspect.
- * @returns {string|symbol} Returns the cast key.
+ * @returns {string|symbol} Returns the key.
  */
-function baseCastKey(key) {
+function toKey(key) {
   return (typeof key == 'string' || isSymbol(key)) ? key : (key + '');
 }
 
-export default baseCastKey;
+export default toKey;

_toSource.js

@@ -1,6 +1,3 @@
-import isFunction from './isFunction';
-import toString from './toString';
-
 /** Used to resolve the decompiled source of functions. */
 var funcToString = Function.prototype.toString;
 
@@ -12,12 +9,15 @@ var funcToString = Function.prototype.toString;
  * @returns {string} Returns the source code.
  */
 function toSource(func) {
-  if (isFunction(func)) {
+  if (func != null) {
     try {
       return funcToString.call(func);
     } catch (e) {}
+    try {
+      return (func + '');
+    } catch (e) {}
   }
-  return toString(func);
+  return '';
 }
 
 export default toSource;

assignInWith.js

@@ -5,7 +5,7 @@ import keysIn from './keysIn';
 /**
  * This method is like `_.assignIn` except that it accepts `customizer`
  * which is invoked to produce the assigned values. If `customizer` returns
- * `undefined` assignment is handled by the method instead. The `customizer`
+ * `undefined`, assignment is handled by the method instead. The `customizer`
  * is invoked with five arguments: (objValue, srcValue, key, object, source).
  *
  * **Note:** This method mutates `object`.

assignWith.js

@@ -5,7 +5,7 @@ import keys from './keys';
 /**
  * This method is like `_.assign` except that it accepts `customizer`
  * which is invoked to produce the assigned values. If `customizer` returns
- * `undefined` assignment is handled by the method instead. The `customizer`
+ * `undefined`, assignment is handled by the method instead. The `customizer`
  * is invoked with five arguments: (objValue, srcValue, key, object, source).
  *
  * **Note:** This method mutates `object`.

at.js

@@ -10,8 +10,7 @@ import rest from './rest';
  * @since 1.0.0
  * @category Object
  * @param {Object} object The object to iterate over.
- * @param {...(string|string[])} [paths] The property paths of elements to pick,
- *  specified individually or in arrays.
+ * @param {...(string|string[])} [paths] The property paths of elements to pick.
  * @returns {Array} Returns the new array of picked elements.
  * @example
  *

bindAll.js

@@ -14,8 +14,7 @@ import rest from './rest';
  * @memberOf _
  * @category Util
  * @param {Object} object The object to bind and assign the bound methods to.
- * @param {...(string|string[])} methodNames The object method names to bind,
- *  specified individually or in arrays.
+ * @param {...(string|string[])} methodNames The object method names to bind.
  * @returns {Object} Returns `object`.
  * @example
  *

cloneWith.js

@@ -2,7 +2,7 @@ import baseClone from './_baseClone';
 
 /**
  * This method is like `_.clone` except that it accepts `customizer` which
- * is invoked to produce the cloned value. If `customizer` returns `undefined`
+ * is invoked to produce the cloned value. If `customizer` returns `undefined`,
  * cloning is handled by the method instead. The `customizer` is invoked with
  * up to four arguments; (value [, index|key, object, stack]).
  *

cond.js

@@ -7,7 +7,7 @@ import rest from './rest';
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /**
- * Creates a function that iterates over `pairs` invoking the corresponding
+ * Creates a function that iterates over `pairs` and invokes the corresponding
  * function of the first predicate to return truthy. The predicate-function
  * pairs are invoked with the `this` binding and arguments of the created
  * function.

create.js

@@ -3,7 +3,7 @@ import baseCreate from './_baseCreate';
 
 /**
  * Creates an object that inherits from the `prototype` object. If a
- * `properties` object is given its own enumerable string keyed properties
+ * `properties` object is given, its own enumerable string keyed properties
  * are assigned to the created object.
  *
  * @static

debounce.js

@@ -23,7 +23,7 @@ var nativeMax = Math.max,
  * on the trailing edge of the timeout only if the debounced function is
  * invoked more than once during the `wait` timeout.
  *
- * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+ * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
  * for details over the differences between `_.debounce` and `_.throttle`.
  *
  * @static
@@ -169,6 +169,9 @@ function debounce(func, wait, options) {
       timerId = setTimeout(timerExpired, wait);
       return invokeFunc(lastCallTime);
     }
+    if (timerId === undefined) {
+      timerId = setTimeout(timerExpired, wait);
+    }
     return result;
   }
   debounced.cancel = cancel;

difference.js

@@ -23,7 +23,7 @@ import rest from './rest';
  */
 var difference = rest(function(array, values) {
   return isArrayLikeObject(array)
-    ? baseDifference(array, baseFlatten(values, 1, true))
+    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
     : [];
 });
 

differenceBy.js

@@ -35,7 +35,7 @@ var differenceBy = rest(function(array, values) {
     iteratee = undefined;
   }
   return isArrayLikeObject(array)
-    ? baseDifference(array, baseFlatten(values, 1, true), baseIteratee(iteratee))
+    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), baseIteratee(iteratee))
     : [];
 });
 

differenceWith.js

@@ -31,7 +31,7 @@ var differenceWith = rest(function(array, values) {
     comparator = undefined;
   }
   return isArrayLikeObject(array)
-    ? baseDifference(array, baseFlatten(values, 1, true), undefined, comparator)
+    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
     : [];
 });
 

forEach.js

@@ -4,7 +4,7 @@ import baseIteratee from './_baseIteratee';
 import isArray from './isArray';
 
 /**
- * Iterates over elements of `collection` invoking `iteratee` for each element.
+ * Iterates over elements of `collection` and invokes `iteratee` for each element.
  * The iteratee is invoked with three arguments: (value, index|key, collection).
  * Iteratee functions may exit iteration early by explicitly returning `false`.
  *

forIn.js

@@ -4,9 +4,9 @@ import keysIn from './keysIn';
 
 /**
  * Iterates over own and inherited enumerable string keyed properties of an
- * object invoking `iteratee` for each property. The iteratee is invoked with
- * three arguments: (value, key, object). Iteratee functions may exit iteration
- * early by explicitly returning `false`.
+ * object and invokes `iteratee` for each property. The iteratee is invoked
+ * with three arguments: (value, key, object). Iteratee functions may exit
+ * iteration early by explicitly returning `false`.
  *
  * @static
  * @memberOf _

forOwn.js

@@ -2,10 +2,10 @@ import baseForOwn from './_baseForOwn';
 import baseIteratee from './_baseIteratee';
 
 /**
- * Iterates over own enumerable string keyed properties of an object invoking
- * `iteratee` for each property. The iteratee is invoked with three arguments:
- * (value, key, object). Iteratee functions may exit iteration early by
- * explicitly returning `false`.
+ * Iterates over own enumerable string keyed properties of an object and
+ * invokes `iteratee` for each property. The iteratee is invoked with three
+ * arguments: (value, key, object). Iteratee functions may exit iteration
+ * early by explicitly returning `false`.
  *
  * @static
  * @memberOf _

get.js

@@ -2,7 +2,7 @@ import baseGet from './_baseGet';
 
 /**
  * Gets the value at `path` of `object`. If the resolved value is
- * `undefined` the `defaultValue` is used in its place.
+ * `undefined`, the `defaultValue` is used in its place.
  *
  * @static
  * @memberOf _

groupBy.js

@@ -8,9 +8,10 @@ var hasOwnProperty = objectProto.hasOwnProperty;
 
 /**
  * Creates an object composed of keys generated from the results of running
- * each element of `collection` thru `iteratee`. The corresponding value of
- * each key is an array of elements responsible for generating the key. The
- * iteratee is invoked with one argument: (value).
+ * each element of `collection` thru `iteratee`. The order of grouped values
+ * is determined by the order they occur in `collection`. The corresponding
+ * value of each key is an array of elements responsible for generating the
+ * key. The iteratee is invoked with one argument: (value).
  *
  * @static
  * @memberOf _

has.js

@@ -13,16 +13,16 @@ import hasPath from './_hasPath';
  * @returns {boolean} Returns `true` if `path` exists, else `false`.
  * @example
  *
- * var object = { 'a': { 'b': { 'c': 3 } } };
- * var other = _.create({ 'a': _.create({ 'b': _.create({ 'c': 3 }) }) });
+ * var object = { 'a': { 'b': 2 } };
+ * var other = _.create({ 'a': _.create({ 'b': 2 }) });
  *
  * _.has(object, 'a');
  * // => true
  *
- * _.has(object, 'a.b.c');
+ * _.has(object, 'a.b');
  * // => true
  *
- * _.has(object, ['a', 'b', 'c']);
+ * _.has(object, ['a', 'b']);
  * // => true
  *
  * _.has(other, 'a');

hasIn.js

@@ -13,15 +13,15 @@ import hasPath from './_hasPath';
  * @returns {boolean} Returns `true` if `path` exists, else `false`.
  * @example
  *
- * var object = _.create({ 'a': _.create({ 'b': _.create({ 'c': 3 }) }) });
+ * var object = _.create({ 'a': _.create({ 'b': 2 }) });
  *
  * _.hasIn(object, 'a');
  * // => true
  *
- * _.hasIn(object, 'a.b.c');
+ * _.hasIn(object, 'a.b');
  * // => true
  *
- * _.hasIn(object, ['a', 'b', 'c']);
+ * _.hasIn(object, ['a', 'b']);
  * // => true
  *
  * _.hasIn(object, 'b');

inRange.js

@@ -3,7 +3,7 @@ import toNumber from './toNumber';
 
 /**
  * Checks if `n` is between `start` and up to but not including, `end`. If
- * `end` is not specified it's set to `start` with `start` then set to `0`.
+ * `end` is not specified, it's set to `start` with `start` then set to `0`.
  * If `start` is greater than `end` the params are swapped to support
  * negative ranges.
  *

includes.js

@@ -8,7 +8,7 @@ import values from './values';
 var nativeMax = Math.max;
 
 /**
- * Checks if `value` is in `collection`. If `collection` is a string it's
+ * 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)
  * is used for equality comparisons. If `fromIndex` is negative, it's used as

indexOf.js

@@ -7,8 +7,8 @@ var nativeMax = Math.max;
 /**
  * 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)
- * for equality comparisons. If `fromIndex` is negative, it's used as the offset
- * from the end of `array`.
+ * for equality comparisons. If `fromIndex` is negative, it's used as the
+ * offset from the end of `array`.
  *
  * @static
  * @memberOf _

intersection.js

@@ -1,6 +1,6 @@
 import arrayMap from './_arrayMap';
-import baseCastArrayLikeObject from './_baseCastArrayLikeObject';
 import baseIntersection from './_baseIntersection';
+import castArrayLikeObject from './_castArrayLikeObject';
 import rest from './rest';
 
 /**
@@ -21,7 +21,7 @@ import rest from './rest';
  * // => [2]
  */
 var intersection = rest(function(arrays) {
-  var mapped = arrayMap(arrays, baseCastArrayLikeObject);
+  var mapped = arrayMap(arrays, castArrayLikeObject);
   return (mapped.length && mapped[0] === arrays[0])
     ? baseIntersection(mapped)
     : [];

intersectionBy.js

@@ -1,7 +1,7 @@
 import arrayMap from './_arrayMap';
-import baseCastArrayLikeObject from './_baseCastArrayLikeObject';
 import baseIntersection from './_baseIntersection';
 import baseIteratee from './_baseIteratee';
+import castArrayLikeObject from './_castArrayLikeObject';
 import last from './last';
 import rest from './rest';
 
@@ -30,7 +30,7 @@ import rest from './rest';
  */
 var intersectionBy = rest(function(arrays) {
   var iteratee = last(arrays),
-      mapped = arrayMap(arrays, baseCastArrayLikeObject);
+      mapped = arrayMap(arrays, castArrayLikeObject);
 
   if (iteratee === last(mapped)) {
     iteratee = undefined;

intersectionWith.js

@@ -1,6 +1,6 @@
 import arrayMap from './_arrayMap';
-import baseCastArrayLikeObject from './_baseCastArrayLikeObject';
 import baseIntersection from './_baseIntersection';
+import castArrayLikeObject from './_castArrayLikeObject';
 import last from './last';
 import rest from './rest';
 
@@ -27,7 +27,7 @@ import rest from './rest';
  */
 var intersectionWith = rest(function(arrays) {
   var comparator = last(arrays),
-      mapped = arrayMap(arrays, baseCastArrayLikeObject);
+      mapped = arrayMap(arrays, castArrayLikeObject);
 
   if (comparator === last(mapped)) {
     comparator = undefined;

invokeMap.js

@@ -8,8 +8,8 @@ import rest from './rest';
 /**
  * Invokes the method at `path` of each element in `collection`, returning
  * an array of the results of each invoked method. Any additional arguments
- * are provided to each invoked method. If `methodName` is a function it's
- * invoked for, and `this` bound to, each element in `collection`.
+ * are provided to each invoked method. If `methodName` is a function, it's
+ * invoked for and `this` bound to, each element in `collection`.
  *
  * @static
  * @memberOf _

isEqualWith.js

@@ -2,7 +2,7 @@ import baseIsEqual from './_baseIsEqual';
 
 /**
  * This method is like `_.isEqual` except that it accepts `customizer` which
- * is invoked to compare values. If `customizer` returns `undefined` comparisons
+ * is invoked to compare values. If `customizer` returns `undefined`, comparisons
  * are handled by the method instead. The `customizer` is invoked with up to
  * six arguments: (objValue, othValue [, index|key, object, other, stack]).
  *

isMatchWith.js

@@ -3,7 +3,7 @@ import getMatchData from './_getMatchData';
 
 /**
  * This method is like `_.isMatch` except that it accepts `customizer` which
- * is invoked to compare values. If `customizer` returns `undefined` comparisons
+ * is invoked to compare values. If `customizer` returns `undefined`, comparisons
  * are handled by the method instead. The `customizer` is invoked with five
  * arguments: (objValue, srcValue, index|key, object, source).
  *

iteratee.js

@@ -3,8 +3,8 @@ import baseIteratee from './_baseIteratee';
 
 /**
  * Creates a function that invokes `func` with the arguments of the created
- * function. If `func` is a property name the created function returns the
- * property value for a given element. If `func` is an array or object the
+ * function. If `func` is a property name, the created function returns the
+ * property value for a given element. If `func` is an array or object, the
  * created function returns `true` for elements that contain the equivalent
  * source properties, otherwise it returns `false`.
  *

lodash.default.js

@@ -1,6 +1,6 @@
 /**
  * @license
- * lodash 4.8.2 (Custom Build) <https://lodash.com/>
+ * lodash 4.10.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="es" -o ./`
  * Copyright jQuery Foundation and other contributors <https://jquery.org/>
  * Released under MIT license <https://lodash.com/license>
@@ -44,7 +44,7 @@ import toInteger from './toInteger';
 import lodash from './wrapperLodash';
 
 /** Used as the semantic version number. */
-var VERSION = '4.8.2';
+var VERSION = '4.10.0';
 
 /** Used to compose bitmasks for wrapper metadata. */
 var BIND_KEY_FLAG = 2;

lodash.js

@@ -1,6 +1,6 @@
 /**
  * @license
- * lodash 4.8.2 (Custom Build) <https://lodash.com/>
+ * lodash 4.10.0 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="es" -o ./`
  * Copyright jQuery Foundation and other contributors <https://jquery.org/>
  * Released under MIT license <https://lodash.com/license>

map.js

@@ -14,8 +14,8 @@ import isArray from './isArray';
  * The guarded methods are:
  * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
  * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
- * `sampleSize`, `slice`, `some`, `sortBy`, `take`, `takeRight`, `template`,
- * `trim`, `trimEnd`, `trimStart`, and `words`
+ * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
+ * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
  *
  * @static
  * @memberOf _

max.js

@@ -3,7 +3,7 @@ import gt from './gt';
 import identity from './identity';
 
 /**
- * Computes the maximum value of `array`. If `array` is empty or falsey
+ * Computes the maximum value of `array`. If `array` is empty or falsey,
  * `undefined` is returned.
  *
  * @static

memoize.js

@@ -5,7 +5,7 @@ var FUNC_ERROR_TEXT = 'Expected a function';
 
 /**
  * Creates a function that memoizes the result of `func`. If `resolver` is
- * provided it determines the cache key for storing the result based on the
+ * provided, it determines the cache key for storing the result based on the
  * arguments provided to the memoized function. By default, the first argument
  * provided to the memoized function is used as the map cache key. The `func`
  * is invoked with the `this` binding of the memoized function.

mergeWith.js

@@ -4,7 +4,7 @@ import createAssigner from './_createAssigner';
 /**
  * This method is like `_.merge` except that it accepts `customizer` which
  * is invoked to produce the merged values of the destination and source
- * properties. If `customizer` returns `undefined` merging is handled by the
+ * properties. If `customizer` returns `undefined`, merging is handled by the
  * method instead. The `customizer` is invoked with seven arguments:
  * (objValue, srcValue, key, object, source, stack).
  *

method.js

@@ -15,14 +15,14 @@ import rest from './rest';
  * @example
  *
  * var objects = [
- *   { 'a': { 'b': { 'c': _.constant(2) } } },
- *   { 'a': { 'b': { 'c': _.constant(1) } } }
+ *   { 'a': { 'b': _.constant(2) } },
+ *   { 'a': { 'b': _.constant(1) } }
  * ];
  *
- * _.map(objects, _.method('a.b.c'));
+ * _.map(objects, _.method('a.b'));
  * // => [2, 1]
  *
- * _.map(objects, _.method(['a', 'b', 'c']));
+ * _.map(objects, _.method(['a', 'b']));
  * // => [2, 1]
  */
 var method = rest(function(path, args) {

min.js

@@ -3,7 +3,7 @@ import identity from './identity';
 import lt from './lt';
 
 /**
- * Computes the minimum value of `array`. If `array` is empty or falsey
+ * Computes the minimum value of `array`. If `array` is empty or falsey,
  * `undefined` is returned.
  *
  * @static

mixin.js

@@ -8,7 +8,7 @@ import keys from './keys';
 
 /**
  * Adds all own enumerable string keyed function properties of a source
- * object to the destination object. If `object` is a function then methods
+ * object to the destination object. If `object` is a function, then methods
  * are added to its prototype as well.
  *
  * **Note:** Use `_.runInContext` to create a pristine `lodash` function to

omit.js

@@ -1,10 +1,10 @@
 import arrayMap from './_arrayMap';
-import baseCastKey from './_baseCastKey';
 import baseDifference from './_baseDifference';
 import baseFlatten from './_baseFlatten';
 import basePick from './_basePick';
 import getAllKeysIn from './_getAllKeysIn';
 import rest from './rest';
+import toKey from './_toKey';
 
 /**
  * The opposite of `_.pick`; this method creates an object composed of the
@@ -16,8 +16,7 @@ import rest from './rest';
  * @memberOf _
  * @category Object
  * @param {Object} object The source object.
- * @param {...(string|string[])} [props] The property identifiers to omit,
- *  specified individually or in arrays.
+ * @param {...(string|string[])} [props] The property identifiers to omit.
  * @returns {Object} Returns the new object.
  * @example
  *
@@ -30,7 +29,7 @@ var omit = rest(function(object, props) {
   if (object == null) {
     return {};
   }
-  props = arrayMap(baseFlatten(props, 1), baseCastKey);
+  props = arrayMap(baseFlatten(props, 1), toKey);
   return basePick(object, baseDifference(getAllKeysIn(object), props));
 });
 

over.js

@@ -9,7 +9,8 @@ import createOver from './_createOver';
  * @memberOf _
  * @since 4.0.0
  * @category Util
- * @param {...(Function|Function[])} iteratees The iteratees to invoke.
+ * @param {...(Array|Array[]|Function|Function[]|Object|Object[]|string|string[])}
+ *  [iteratees=[_.identity]] The iteratees to invoke.
  * @returns {Function} Returns the new function.
  * @example
  *

overArgs.js

@@ -2,6 +2,7 @@ import apply from './_apply';
 import arrayMap from './_arrayMap';
 import baseFlatten from './_baseFlatten';
 import baseIteratee from './_baseIteratee';
+import isFlattenableIteratee from './_isFlattenableIteratee';
 import rest from './rest';
 
 /* Built-in method references for those with the same name as other `lodash` methods. */
@@ -16,8 +17,8 @@ var nativeMin = Math.min;
  * @memberOf _
  * @category Function
  * @param {Function} func The function to wrap.
- * @param {...(Function|Function[])} [transforms] The functions to transform.
- * arguments, specified individually or in arrays.
+ * @param {...(Array|Array[]|Function|Function[]|Object|Object[]|string|string[])}
+ *  [transforms[_.identity]] The functions to transform.
  * @returns {Function} Returns the new function.
  * @example
  *
@@ -40,8 +41,7 @@ var nativeMin = Math.min;
  * // => [100, 10]
  */
 var overArgs = rest(function(func, transforms) {
-  transforms = arrayMap(baseFlatten(transforms, 1), baseIteratee);
-
+  transforms = arrayMap(baseFlatten(transforms, 1, isFlattenableIteratee), baseIteratee);
   var funcsLength = transforms.length;
   return rest(function(args) {
     var index = -1,

overEvery.js

@@ -9,7 +9,8 @@ import createOver from './_createOver';
  * @memberOf _
  * @since 4.0.0
  * @category Util
- * @param {...(Function|Function[])} predicates The predicates to check.
+ * @param {...(Array|Array[]|Function|Function[]|Object|Object[]|string|string[])}
+ *  [predicates=[_.identity]] The predicates to check.
  * @returns {Function} Returns the new function.
  * @example
  *

overSome.js

@@ -9,7 +9,8 @@ import createOver from './_createOver';
  * @memberOf _
  * @since 4.0.0
  * @category Util
- * @param {...(Function|Function[])} predicates The predicates to check.
+ * @param {...(Array|Array[]|Function|Function[]|Object|Object[]|string|string[])}
+ *  [predicates=[_.identity]] The predicates to check.
  * @returns {Function} Returns the new function.
  * @example
  *

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lodash-es",
-  "version": "4.8.2",
+  "version": "4.10.0",
   "description": "Lodash exported as ES modules.",
   "homepage": "https://lodash.com/custom-builds",
   "license": "MIT",

pick.js

@@ -10,8 +10,7 @@ import rest from './rest';
  * @memberOf _
  * @category Object
  * @param {Object} object The source object.
- * @param {...(string|string[])} [props] The property identifiers to pick,
- *  specified individually or in arrays.
+ * @param {...(string|string[])} [props] The property identifiers to pick.
  * @returns {Object} Returns the new object.
  * @example
  *

property.js

@@ -14,14 +14,14 @@ import isKey from './_isKey';
  * @example
  *
  * var objects = [
- *   { 'a': { 'b': { 'c': 2 } } },
- *   { 'a': { 'b': { 'c': 1 } } }
+ *   { 'a': { 'b': 2 } },
+ *   { 'a': { 'b': 1 } }
  * ];
  *
- * _.map(objects, _.property('a.b.c'));
+ * _.map(objects, _.property('a.b'));
  * // => [2, 1]
  *
- * _.map(_.sortBy(objects, _.property(['a', 'b', 'c'])), 'a.b.c');
+ * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
  * // => [1, 2]
  */
 function property(path) {

pullAt.js

@@ -16,8 +16,7 @@ import rest from './rest';
  * @since 3.0.0
  * @category Array
  * @param {Array} array The array to modify.
- * @param {...(number|number[])} [indexes] The indexes of elements to remove,
- *  specified individually or in arrays.
+ * @param {...(number|number[])} [indexes] The indexes of elements to remove.
  * @returns {Array} Returns the new array of removed elements.
  * @example
  *

range.js

@@ -3,7 +3,7 @@ import createRange from './_createRange';
 /**
  * Creates an array of numbers (positive and/or negative) progressing from
  * `start` up to, but not including, `end`. A step of `-1` is used if a negative
- * `start` is specified without an `end` or `step`. If `end` is not specified
+ * `start` is specified without an `end` or `step`. If `end` is not specified,
  * it's set to `start` with `start` then set to `0`.
  *
  * **Note:** JavaScript follows the IEEE-754 standard for resolving

rearg.js

@@ -16,8 +16,7 @@ var REARG_FLAG = 256;
  * @since 3.0.0
  * @category Function
  * @param {Function} func The function to rearrange arguments for.
- * @param {...(number|number[])} indexes The arranged argument indexes,
- *  specified individually or in arrays.
+ * @param {...(number|number[])} indexes The arranged argument indexes.
  * @returns {Function} Returns the new function.
  * @example
  *

reduce.js

@@ -8,7 +8,7 @@ import isArray from './isArray';
  * Reduces `collection` to a value which is the accumulated result of running
  * each element in `collection` thru `iteratee`, where each successive
  * invocation is supplied the return value of the previous. If `accumulator`
- * is not given the first element of `collection` is used as the initial
+ * is not given, the first element of `collection` is used as the initial
  * value. The iteratee is invoked with four arguments:
  * (accumulator, value, index|key, collection).
  *

result.js

@@ -1,4 +1,4 @@
-import baseCastPath from './_baseCastPath';
+import castPath from './_castPath';
 import isFunction from './isFunction';
 import isKey from './_isKey';
 
@@ -32,7 +32,7 @@ import isKey from './_isKey';
  * // => 'default'
  */
 function result(object, path, defaultValue) {
-  path = isKey(path, object) ? [path] : baseCastPath(path);
+  path = isKey(path, object) ? [path] : castPath(path);
 
   var index = -1,
       length = path.length;

set.js

@@ -1,7 +1,7 @@
 import baseSet from './_baseSet';
 
 /**
- * Sets the value at `path` of `object`. If a portion of `path` doesn't exist
+ * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
  * it's created. Arrays are created for missing index properties while objects
  * are created for all other missing properties. Use `_.setWith` to customize
  * `path` creation.

sortBy.js

@@ -15,8 +15,7 @@ import rest from './rest';
  * @category Collection
  * @param {Array|Object} collection The collection to iterate over.
  * @param {...(Array|Array[]|Function|Function[]|Object|Object[]|string|string[])}
- *  [iteratees=[_.identity]] The iteratees to sort by, specified individually
- *  or in arrays.
+ *  [iteratees=[_.identity]] The iteratees to sort by.
  * @returns {Array} Returns the new sorted array.
  * @example
  *
@@ -46,7 +45,7 @@ var sortBy = rest(function(collection, iteratees) {
   if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
     iteratees = [];
   } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
-    iteratees.length = 1;
+    iteratees = [iteratees[0]];
   }
   return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
 });

split.js

@@ -1,5 +1,13 @@
+import castSlice from './_castSlice';
+import isIterateeCall from './_isIterateeCall';
+import isRegExp from './isRegExp';
+import reHasComplexSymbol from './_reHasComplexSymbol';
+import stringToArray from './_stringToArray';
 import toString from './toString';
 
+/** Used as references for the maximum length and index of an array. */
+var MAX_ARRAY_LENGTH = 4294967295;
+
 /**
  * Splits `string` by `separator`.
  *
@@ -20,7 +28,24 @@ import toString from './toString';
  * // => ['a', 'b']
  */
 function split(string, separator, limit) {
-  return toString(string).split(separator, limit);
+  if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
+    separator = limit = undefined;
+  }
+  limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
+  if (!limit) {
+    return [];
+  }
+  string = toString(string);
+  if (string && (
+        typeof separator == 'string' ||
+        (separator != null && !isRegExp(separator))
+      )) {
+    separator += '';
+    if (separator == '' && reHasComplexSymbol.test(string)) {
+      return castSlice(stringToArray(string), 0, limit);
+    }
+  }
+  return string.split(separator, limit);
 }
 
 export default split;

spread.js

@@ -1,5 +1,6 @@
 import apply from './_apply';
 import arrayPush from './_arrayPush';
+import castSlice from './_castSlice';
 import rest from './rest';
 import toInteger from './toInteger';
 
@@ -50,7 +51,7 @@ function spread(func, start) {
   start = start === undefined ? 0 : nativeMax(toInteger(start), 0);
   return rest(function(args) {
     var array = args[start],
-        otherArgs = args.slice(0, start);
+        otherArgs = castSlice(args, 0, start);
 
     if (array) {
       arrayPush(otherArgs, array);

template.js

@@ -32,7 +32,7 @@ var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
  * in "interpolate" delimiters, HTML-escape interpolated data properties in
  * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
  * properties may be accessed as free variables in the template. If a setting
- * object is given it takes precedence over `_.templateSettings` values.
+ * object is given, it takes precedence over `_.templateSettings` values.
  *
  * **Note:** In the development build `_.template` utilizes
  * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)

throttle.js

@@ -18,7 +18,7 @@ var FUNC_ERROR_TEXT = 'Expected a function';
  * invoked on the trailing edge of the timeout only if the throttled function
  * is invoked more than once during the `wait` timeout.
  *
- * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+ * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
  * for details over the differences between `_.throttle` and `_.debounce`.
  *
  * @static

toPath.js

@@ -1,9 +1,9 @@
 import arrayMap from './_arrayMap';
-import baseCastKey from './_baseCastKey';
 import copyArray from './_copyArray';
 import isArray from './isArray';
 import isSymbol from './isSymbol';
 import stringToPath from './_stringToPath';
+import toKey from './_toKey';
 
 /**
  * Converts `value` to a property path array.
@@ -33,7 +33,7 @@ import stringToPath from './_stringToPath';
  */
 function toPath(value) {
   if (isArray(value)) {
-    return arrayMap(value, baseCastKey);
+    return arrayMap(value, toKey);
   }
   return isSymbol(value) ? [value] : copyArray(stringToPath(value));
 }

toString.js

@@ -9,8 +9,8 @@ var symbolProto = Symbol ? Symbol.prototype : undefined,
     symbolToString = symbolProto ? symbolProto.toString : undefined;
 
 /**
- * Converts `value` to a string if it's not one. An empty string is returned
- * for `null` and `undefined` values. The sign of `-0` is preserved.
+ * Converts `value` to a string. An empty string is returned for `null`
+ * and `undefined` values. The sign of `-0` is preserved.
  *
  * @static
  * @memberOf _

trim.js

@@ -1,3 +1,4 @@
+import castSlice from './_castSlice';
 import charsEndIndex from './_charsEndIndex';
 import charsStartIndex from './_charsStartIndex';
 import stringToArray from './_stringToArray';
@@ -36,16 +37,15 @@ function trim(string, chars, guard) {
   if (guard || chars === undefined) {
     return string.replace(reTrim, '');
   }
-  chars = (chars + '');
-  if (!chars) {
+  if (!(chars += '')) {
     return string;
   }
   var strSymbols = stringToArray(string),
-      chrSymbols = stringToArray(chars);
+      chrSymbols = stringToArray(chars),
+      start = charsStartIndex(strSymbols, chrSymbols),
+      end = charsEndIndex(strSymbols, chrSymbols) + 1;
 
-  return strSymbols
-    .slice(charsStartIndex(strSymbols, chrSymbols), charsEndIndex(strSymbols, chrSymbols) + 1)
-    .join('');
+  return castSlice(strSymbols, start, end).join('');
 }
 
 export default trim;

trimEnd.js

@@ -1,3 +1,4 @@
+import castSlice from './_castSlice';
 import charsEndIndex from './_charsEndIndex';
 import stringToArray from './_stringToArray';
 import toString from './toString';
@@ -32,14 +33,13 @@ function trimEnd(string, chars, guard) {
   if (guard || chars === undefined) {
     return string.replace(reTrimEnd, '');
   }
-  chars = (chars + '');
-  if (!chars) {
+  if (!(chars += '')) {
     return string;
   }
-  var strSymbols = stringToArray(string);
-  return strSymbols
-    .slice(0, charsEndIndex(strSymbols, stringToArray(chars)) + 1)
-    .join('');
+  var strSymbols = stringToArray(string),
+      end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;
+
+  return castSlice(strSymbols, 0, end).join('');
 }
 
 export default trimEnd;

trimStart.js

@@ -1,3 +1,4 @@
+import castSlice from './_castSlice';
 import charsStartIndex from './_charsStartIndex';
 import stringToArray from './_stringToArray';
 import toString from './toString';
@@ -32,14 +33,13 @@ function trimStart(string, chars, guard) {
   if (guard || chars === undefined) {
     return string.replace(reTrimStart, '');
   }
-  chars = (chars + '');
-  if (!chars) {
+  if (!(chars += '')) {
     return string;
   }
-  var strSymbols = stringToArray(string);
-  return strSymbols
-    .slice(charsStartIndex(strSymbols, stringToArray(chars)))
-    .join('');
+  var strSymbols = stringToArray(string),
+      start = charsStartIndex(strSymbols, stringToArray(chars));
+
+  return castSlice(strSymbols, start).join('');
 }
 
 export default trimStart;

truncate.js

@@ -1,5 +1,7 @@
+import castSlice from './_castSlice';
 import isObject from './isObject';
 import isRegExp from './isRegExp';
+import reHasComplexSymbol from './_reHasComplexSymbol';
 import stringSize from './_stringSize';
 import stringToArray from './_stringToArray';
 import toInteger from './toInteger';
@@ -12,18 +14,6 @@ var DEFAULT_TRUNC_LENGTH = 30,
 /** Used to match `RegExp` flags from their coerced string values. */
 var reFlags = /\w*$/;
 
-/** 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 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 + ']');
-
 /**
  * Truncates `string` if it's longer than the given maximum string length.
  * The last characters of the truncated string are replaced with the omission
@@ -85,7 +75,7 @@ function truncate(string, options) {
     return omission;
   }
   var result = strSymbols
-    ? strSymbols.slice(0, end).join('')
+    ? castSlice(strSymbols, 0, end).join('')
     : string.slice(0, end);
 
   if (separator === undefined) {

union.js

@@ -1,5 +1,6 @@
 import baseFlatten from './_baseFlatten';
 import baseUniq from './_baseUniq';
+import isArrayLikeObject from './isArrayLikeObject';
 import rest from './rest';
 
 /**
@@ -19,7 +20,7 @@ import rest from './rest';
  * // => [2, 1, 4]
  */
 var union = rest(function(arrays) {
-  return baseUniq(baseFlatten(arrays, 1, true));
+  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
 });
 
 export default union;

unionBy.js

@@ -33,7 +33,7 @@ var unionBy = rest(function(arrays) {
   if (isArrayLikeObject(iteratee)) {
     iteratee = undefined;
   }
-  return baseUniq(baseFlatten(arrays, 1, true), baseIteratee(iteratee));
+  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), baseIteratee(iteratee));
 });
 
 export default unionBy;

unionWith.js

@@ -29,7 +29,7 @@ var unionWith = rest(function(arrays) {
   if (isArrayLikeObject(comparator)) {
     comparator = undefined;
   }
-  return baseUniq(baseFlatten(arrays, 1, true), undefined, comparator);
+  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
 });
 
 export default unionWith;

uniqueId.js

@@ -4,7 +4,7 @@ import toString from './toString';
 var idCounter = 0;
 
 /**
- * Generates a unique ID. If `prefix` is given the ID is appended to it.
+ * Generates a unique ID. If `prefix` is given, the ID is appended to it.
  *
  * @static
  * @since 0.1.0

update.js

@@ -1,5 +1,5 @@
-import baseCastFunction from './_baseCastFunction';
 import baseUpdate from './_baseUpdate';
+import castFunction from './_castFunction';
 
 /**
  * This method is like `_.set` except that accepts `updater` to produce the
@@ -29,7 +29,7 @@ import baseUpdate from './_baseUpdate';
  * // => 0
  */
 function update(object, path, updater) {
-  return object == null ? object : baseUpdate(object, path, baseCastFunction(updater));
+  return object == null ? object : baseUpdate(object, path, castFunction(updater));
 }
 
 export default update;

updateWith.js

@@ -1,5 +1,5 @@
-import baseCastFunction from './_baseCastFunction';
 import baseUpdate from './_baseUpdate';
+import castFunction from './_castFunction';
 
 /**
  * This method is like `_.update` except that it accepts `customizer` which is
@@ -27,7 +27,7 @@ import baseUpdate from './_baseUpdate';
  */
 function updateWith(object, path, updater, customizer) {
   customizer = typeof customizer == 'function' ? customizer : undefined;
-  return object == null ? object : baseUpdate(object, path, baseCastFunction(updater), customizer);
+  return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
 }
 
 export default updateWith;

words.js

@@ -1,5 +1,8 @@
 import toString from './toString';
 
+/** Used to match non-compound words composed of alphanumeric characters. */
+var reBasicWord = /[a-zA-Z0-9]+/g;
+
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
     rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
@@ -38,9 +41,6 @@ var rsLowerMisc = '(?:' + rsLower + '|' + rsMisc + ')',
     rsSeq = rsOptVar + reOptMod + rsOptJoin,
     rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq;
 
-/** Used to match non-compound words composed of alphanumeric characters. */
-var reBasicWord = /[a-zA-Z0-9]+/g;
-
 /** Used to match complex or compound words. */
 var reComplexWord = RegExp([
   rsUpper + '?' + rsLower + '+(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',

wrapperAt.js

@@ -13,8 +13,7 @@ import thru from './thru';
  * @memberOf _
  * @since 1.0.0
  * @category Seq
- * @param {...(string|string[])} [paths] The property paths of elements to pick,
- *  specified individually or in arrays.
+ * @param {...(string|string[])} [paths] The property paths of elements to pick.
  * @returns {Object} Returns the new `lodash` wrapper instance.
  * @example
  *

wrapperLodash.js

@@ -29,9 +29,9 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * Shortcut fusion is an optimization to merge iteratee calls; this avoids
  * the creation of intermediate arrays and can greatly reduce the number of
  * iteratee executions. Sections of a chain sequence qualify for shortcut
- * fusion if the section is applied to an array of at least two hundred
- * elements and any iteratees accept only one argument. The heuristic for
- * whether a section qualifies for shortcut fusion is subject to change.
+ * fusion if the section is applied to an array of at least `200` elements
+ * and any iteratees accept only one argument. The heuristic for whether a
+ * section qualifies for shortcut fusion is subject to change.
  *
  * Chaining is supported in custom builds as long as the `_#value` method is
  * directly or indirectly included in the build.