Bump to v4.17.15.

LICENSE

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

README.md

@@ -1,4 +1,4 @@
-# lodash v4.16.5
+# lodash v4.17.15
 
 The [Lodash](https://lodash.com/) library exported as [Node.js](https://nodejs.org/) modules.
 
@@ -28,12 +28,12 @@ var at = require('lodash/at');
 var curryN = require('lodash/fp/curryN');
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.16.5-npm) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.17.15-npm) for more details.
 
 **Note:**<br>
 Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL.
 
 ## Support
 
-Tested in Chrome 53-54, Firefox 48-49, IE 11, Edge 14, Safari 9-10, Node.js 6-7, & PhantomJS 2.1.1.<br>
+Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, & Node.js 8-12.<br>
 Automated [browser](https://saucelabs.com/u/lodash) & [CI](https://travis-ci.org/lodash/lodash/) test runs are available.

_addMapEntry.js

@@ -1,15 +0,0 @@
-/**
- * Adds the key-value `pair` to `map`.
- *
- * @private
- * @param {Object} map The map to modify.
- * @param {Array} pair The key-value pair to add.
- * @returns {Object} Returns `map`.
- */
-function addMapEntry(map, pair) {
-  // Don't return `map.set` because it's not chainable in IE 11.
-  map.set(pair[0], pair[1]);
-  return map;
-}
-
-module.exports = addMapEntry;

_addSetEntry.js

@@ -1,15 +0,0 @@
-/**
- * Adds `value` to `set`.
- *
- * @private
- * @param {Object} set The set to modify.
- * @param {*} value The value to add.
- * @returns {Object} Returns `set`.
- */
-function addSetEntry(set, value) {
-  // Don't return `set.add` because it's not chainable in IE 11.
-  set.add(value);
-  return set;
-}
-
-module.exports = addSetEntry;

_baseAssignIn.js

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

_baseAt.js

@@ -5,7 +5,7 @@ var get = require('./get');
  *
  * @private
  * @param {Object} object The object to iterate over.
- * @param {string[]} paths The property paths of elements to pick.
+ * @param {string[]} paths The property paths to pick.
  * @returns {Array} Returns the picked elements.
  */
 function baseAt(object, paths) {

_baseClone.js

@@ -2,19 +2,29 @@ var Stack = require('./_Stack'),
     arrayEach = require('./_arrayEach'),
     assignValue = require('./_assignValue'),
     baseAssign = require('./_baseAssign'),
+    baseAssignIn = require('./_baseAssignIn'),
     cloneBuffer = require('./_cloneBuffer'),
     copyArray = require('./_copyArray'),
     copySymbols = require('./_copySymbols'),
+    copySymbolsIn = require('./_copySymbolsIn'),
     getAllKeys = require('./_getAllKeys'),
+    getAllKeysIn = require('./_getAllKeysIn'),
     getTag = require('./_getTag'),
     initCloneArray = require('./_initCloneArray'),
     initCloneByTag = require('./_initCloneByTag'),
     initCloneObject = require('./_initCloneObject'),
     isArray = require('./isArray'),
     isBuffer = require('./isBuffer'),
+    isMap = require('./isMap'),
     isObject = require('./isObject'),
+    isSet = require('./isSet'),
     keys = require('./keys');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1,
+    CLONE_FLAT_FLAG = 2,
+    CLONE_SYMBOLS_FLAG = 4;
+
 /** `Object#toString` result references. */
 var argsTag = '[object Arguments]',
     arrayTag = '[object Array]',
@@ -66,16 +76,22 @@ cloneableTags[weakMapTag] = false;
  *
  * @private
  * @param {*} value The value to clone.
- * @param {boolean} [isDeep] Specify a deep clone.
- * @param {boolean} [isFull] Specify a clone including symbols.
+ * @param {boolean} bitmask The bitmask flags.
+ *  1 - Deep clone
+ *  2 - Flatten inherited properties
+ *  4 - Clone symbols
  * @param {Function} [customizer] The function to customize cloning.
  * @param {string} [key] The key of `value`.
  * @param {Object} [object] The parent object of `value`.
  * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
  * @returns {*} Returns the cloned value.
  */
-function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
-  var result;
+function baseClone(value, bitmask, customizer, key, object, stack) {
+  var result,
+      isDeep = bitmask & CLONE_DEEP_FLAG,
+      isFlat = bitmask & CLONE_FLAT_FLAG,
+      isFull = bitmask & CLONE_SYMBOLS_FLAG;
+
   if (customizer) {
     result = object ? customizer(value, key, object, stack) : customizer(value);
   }
@@ -99,15 +115,17 @@ function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
       return cloneBuffer(value, isDeep);
     }
     if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
-      result = initCloneObject(isFunc ? {} : value);
+      result = (isFlat || isFunc) ? {} : initCloneObject(value);
       if (!isDeep) {
-        return copySymbols(value, baseAssign(result, value));
+        return isFlat
+          ? copySymbolsIn(value, baseAssignIn(result, value))
+          : copySymbols(value, baseAssign(result, value));
       }
     } else {
       if (!cloneableTags[tag]) {
         return object ? value : {};
       }
-      result = initCloneByTag(value, tag, baseClone, isDeep);
+      result = initCloneByTag(value, tag, isDeep);
     }
   }
   // Check for circular references and return its corresponding clone.
@@ -118,14 +136,28 @@ function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
   }
   stack.set(value, result);
 
-  var props = isArr ? undefined : (isFull ? getAllKeys : keys)(value);
+  if (isSet(value)) {
+    value.forEach(function(subValue) {
+      result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
+    });
+  } else if (isMap(value)) {
+    value.forEach(function(subValue, key) {
+      result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
+    });
+  }
+
+  var keysFunc = isFull
+    ? (isFlat ? getAllKeysIn : getAllKeys)
+    : (isFlat ? keysIn : keys);
+
+  var props = isArr ? undefined : keysFunc(value);
   arrayEach(props || value, function(subValue, key) {
     if (props) {
       key = subValue;
       subValue = value[key];
     }
     // Recursively populate clone (susceptible to call stack limits).
-    assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));
+    assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
   });
   return result;
 }

_baseGet.js

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

_baseGetTag.js

@@ -20,8 +20,7 @@ function baseGetTag(value) {
   if (value == null) {
     return value === undefined ? undefinedTag : nullTag;
   }
-  value = Object(value);
-  return (symToStringTag && symToStringTag in value)
+  return (symToStringTag && symToStringTag in Object(value))
     ? getRawTag(value)
     : objectToString(value);
 }

_baseInvoke.js

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

_baseIsEqual.js

@@ -1,5 +1,4 @@
 var baseIsEqualDeep = require('./_baseIsEqualDeep'),
-    isObject = require('./isObject'),
     isObjectLike = require('./isObjectLike');
 
 /**
@@ -9,22 +8,21 @@ var baseIsEqualDeep = require('./_baseIsEqualDeep'),
  * @private
  * @param {*} value The value to compare.
  * @param {*} other The other value to compare.
+ * @param {boolean} bitmask The bitmask flags.
+ *  1 - Unordered comparison
+ *  2 - Partial comparison
  * @param {Function} [customizer] The function to customize comparisons.
- * @param {boolean} [bitmask] The bitmask of comparison flags.
- *  The bitmask may be composed of the following flags:
- *     1 - Unordered comparison
- *     2 - Partial comparison
  * @param {Object} [stack] Tracks traversed `value` and `other` objects.
  * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
  */
-function baseIsEqual(value, other, customizer, bitmask, stack) {
+function baseIsEqual(value, other, bitmask, customizer, stack) {
   if (value === other) {
     return true;
   }
-  if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
+  if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
     return value !== value && other !== other;
   }
-  return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);
+  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
 }
 
 module.exports = baseIsEqual;

_baseIsEqualDeep.js

@@ -7,8 +7,8 @@ var Stack = require('./_Stack'),
     isBuffer = require('./isBuffer'),
     isTypedArray = require('./isTypedArray');
 
-/** Used to compose bitmasks for comparison styles. */
-var PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1;
 
 /** `Object#toString` result references. */
 var argsTag = '[object Arguments]',
@@ -29,27 +29,21 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @private
  * @param {Object} object The object to compare.
  * @param {Object} other The other object to compare.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+ * @param {Function} customizer The function to customize comparisons.
  * @param {Function} equalFunc The function to determine equivalents of values.
- * @param {Function} [customizer] The function to customize comparisons.
- * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`
- *  for more details.
  * @param {Object} [stack] Tracks traversed `object` and `other` objects.
  * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
  */
-function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
+function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
   var objIsArr = isArray(object),
       othIsArr = isArray(other),
-      objTag = arrayTag,
-      othTag = arrayTag;
+      objTag = objIsArr ? arrayTag : getTag(object),
+      othTag = othIsArr ? arrayTag : getTag(other);
+
+  objTag = objTag == argsTag ? objectTag : objTag;
+  othTag = othTag == argsTag ? objectTag : othTag;
 
-  if (!objIsArr) {
-    objTag = getTag(object);
-    objTag = objTag == argsTag ? objectTag : objTag;
-  }
-  if (!othIsArr) {
-    othTag = getTag(other);
-    othTag = othTag == argsTag ? objectTag : othTag;
-  }
   var objIsObj = objTag == objectTag,
       othIsObj = othTag == objectTag,
       isSameTag = objTag == othTag;
@@ -64,10 +58,10 @@ function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
   if (isSameTag && !objIsObj) {
     stack || (stack = new Stack);
     return (objIsArr || isTypedArray(object))
-      ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)
-      : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);
+      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
+      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
   }
-  if (!(bitmask & PARTIAL_COMPARE_FLAG)) {
+  if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
     var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
         othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
 
@@ -76,14 +70,14 @@ function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
           othUnwrapped = othIsWrapped ? other.value() : other;
 
       stack || (stack = new Stack);
-      return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);
+      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
     }
   }
   if (!isSameTag) {
     return false;
   }
   stack || (stack = new Stack);
-  return equalObjects(object, other, equalFunc, customizer, bitmask, stack);
+  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
 }
 
 module.exports = baseIsEqualDeep;

_baseIsMatch.js

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

_baseMatchesProperty.js

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

_baseMerge.js

@@ -3,7 +3,8 @@ var Stack = require('./_Stack'),
     baseFor = require('./_baseFor'),
     baseMergeDeep = require('./_baseMergeDeep'),
     isObject = require('./isObject'),
-    keysIn = require('./keysIn');
+    keysIn = require('./keysIn'),
+    safeGet = require('./_safeGet');
 
 /**
  * The base implementation of `_.merge` without support for multiple sources.
@@ -21,13 +22,13 @@ function baseMerge(object, source, srcIndex, customizer, stack) {
     return;
   }
   baseFor(source, function(srcValue, key) {
+    stack || (stack = new Stack);
     if (isObject(srcValue)) {
-      stack || (stack = new Stack);
       baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
     }
     else {
       var newValue = customizer
-        ? customizer(object[key], srcValue, (key + ''), object, source, stack)
+        ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
         : undefined;
 
       if (newValue === undefined) {

_baseMergeDeep.js

@@ -11,6 +11,7 @@ var assignMergeValue = require('./_assignMergeValue'),
     isObject = require('./isObject'),
     isPlainObject = require('./isPlainObject'),
     isTypedArray = require('./isTypedArray'),
+    safeGet = require('./_safeGet'),
     toPlainObject = require('./toPlainObject');
 
 /**
@@ -29,8 +30,8 @@ var assignMergeValue = require('./_assignMergeValue'),
  *  counterparts.
  */
 function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
-  var objValue = object[key],
-      srcValue = source[key],
+  var objValue = safeGet(object, key),
+      srcValue = safeGet(source, key),
       stacked = stack.get(srcValue);
 
   if (stacked) {
@@ -73,7 +74,7 @@ function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, sta
       if (isArguments(objValue)) {
         newValue = toPlainObject(objValue);
       }
-      else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) {
+      else if (!isObject(objValue) || isFunction(objValue)) {
         newValue = initCloneObject(srcValue);
       }
     }

_basePick.js

@@ -1,4 +1,5 @@
-var basePickBy = require('./_basePickBy');
+var basePickBy = require('./_basePickBy'),
+    hasIn = require('./hasIn');
 
 /**
  * The base implementation of `_.pick` without support for individual
@@ -6,13 +7,12 @@ var basePickBy = require('./_basePickBy');
  *
  * @private
  * @param {Object} object The source object.
- * @param {string[]} props The property identifiers to pick.
+ * @param {string[]} paths The property paths to pick.
  * @returns {Object} Returns the new object.
  */
-function basePick(object, props) {
-  object = Object(object);
-  return basePickBy(object, props, function(value, key) {
-    return key in object;
+function basePick(object, paths) {
+  return basePickBy(object, paths, function(value, path) {
+    return hasIn(object, path);
   });
 }
 

_basePickBy.js

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

_basePullAt.js

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

_baseSet.js

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

_baseUnset.js

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

_baseXor.js

@@ -25,9 +25,8 @@ function baseXor(arrays, iteratee, comparator) {
         othIndex = -1;
 
     while (++othIndex < length) {
-      var othArray = arrays[othIndex];
-      if (othArray !== array) {
-        result[index] = baseDifference(result[index] || array, othArray, iteratee, comparator);
+      if (othIndex != index) {
+        result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
       }
     }
   }

_castPath.js

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

_cloneMap.js

@@ -1,19 +0,0 @@
-var addMapEntry = require('./_addMapEntry'),
-    arrayReduce = require('./_arrayReduce'),
-    mapToArray = require('./_mapToArray');
-
-/**
- * Creates a clone of `map`.
- *
- * @private
- * @param {Object} map The map to clone.
- * @param {Function} cloneFunc The function to clone values.
- * @param {boolean} [isDeep] Specify a deep clone.
- * @returns {Object} Returns the cloned map.
- */
-function cloneMap(map, isDeep, cloneFunc) {
-  var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);
-  return arrayReduce(array, addMapEntry, new map.constructor);
-}
-
-module.exports = cloneMap;

_cloneSet.js

@@ -1,19 +0,0 @@
-var addSetEntry = require('./_addSetEntry'),
-    arrayReduce = require('./_arrayReduce'),
-    setToArray = require('./_setToArray');
-
-/**
- * Creates a clone of `set`.
- *
- * @private
- * @param {Object} set The set to clone.
- * @param {Function} cloneFunc The function to clone values.
- * @param {boolean} [isDeep] Specify a deep clone.
- * @returns {Object} Returns the cloned set.
- */
-function cloneSet(set, isDeep, cloneFunc) {
-  var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);
-  return arrayReduce(array, addSetEntry, new set.constructor);
-}
-
-module.exports = cloneSet;

_copySymbols.js

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

_copySymbolsIn.js

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

_createBind.js

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

_createFlow.js

@@ -5,17 +5,14 @@ var LodashWrapper = require('./_LodashWrapper'),
     isArray = require('./isArray'),
     isLaziable = require('./_isLaziable');
 
-/** Used as the size to enable large array optimizations. */
-var LARGE_ARRAY_SIZE = 200;
-
 /** Error message constants. */
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /** Used to compose bitmasks for function metadata. */
-var CURRY_FLAG = 8,
-    PARTIAL_FLAG = 32,
-    ARY_FLAG = 128,
-    REARG_FLAG = 256;
+var WRAP_CURRY_FLAG = 8,
+    WRAP_PARTIAL_FLAG = 32,
+    WRAP_ARY_FLAG = 128,
+    WRAP_REARG_FLAG = 256;
 
 /**
  * Creates a `_.flow` or `_.flowRight` function.
@@ -50,7 +47,7 @@ function createFlow(fromRight) {
           data = funcName == 'wrapper' ? getData(func) : undefined;
 
       if (data && isLaziable(data[0]) &&
-            data[1] == (ARY_FLAG | CURRY_FLAG | PARTIAL_FLAG | REARG_FLAG) &&
+            data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
             !data[4].length && data[9] == 1
           ) {
         wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
@@ -64,8 +61,7 @@ function createFlow(fromRight) {
       var args = arguments,
           value = args[0];
 
-      if (wrapper && args.length == 1 &&
-          isArray(value) && value.length >= LARGE_ARRAY_SIZE) {
+      if (wrapper && args.length == 1 && isArray(value)) {
         return wrapper.plant(value).value();
       }
       var index = 0,

_createHybrid.js

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

_createPartial.js

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

_createRecurry.js

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

_createRound.js

@@ -1,9 +1,11 @@
-var toInteger = require('./toInteger'),
+var root = require('./_root'),
+    toInteger = require('./toInteger'),
     toNumber = require('./toNumber'),
     toString = require('./toString');
 
 /* Built-in method references for those with the same name as other `lodash` methods. */
-var nativeMin = Math.min;
+var nativeIsFinite = root.isFinite,
+    nativeMin = Math.min;
 
 /**
  * Creates a function like `_.round`.
@@ -16,8 +18,8 @@ function createRound(methodName) {
   var func = Math[methodName];
   return function(number, precision) {
     number = toNumber(number);
-    precision = nativeMin(toInteger(precision), 292);
-    if (precision) {
+    precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
+    if (precision && nativeIsFinite(number)) {
       // Shift with exponential notation to avoid floating-point issues.
       // See [MDN](https://mdn.io/round#Examples) for more details.
       var pair = (toString(number) + 'e').split('e'),

_createWrap.js

@@ -13,12 +13,12 @@ var baseSetData = require('./_baseSetData'),
 var FUNC_ERROR_TEXT = 'Expected a function';
 
 /** Used to compose bitmasks for function metadata. */
-var BIND_FLAG = 1,
-    BIND_KEY_FLAG = 2,
-    CURRY_FLAG = 8,
-    CURRY_RIGHT_FLAG = 16,
-    PARTIAL_FLAG = 32,
-    PARTIAL_RIGHT_FLAG = 64;
+var WRAP_BIND_FLAG = 1,
+    WRAP_BIND_KEY_FLAG = 2,
+    WRAP_CURRY_FLAG = 8,
+    WRAP_CURRY_RIGHT_FLAG = 16,
+    WRAP_PARTIAL_FLAG = 32,
+    WRAP_PARTIAL_RIGHT_FLAG = 64;
 
 /* Built-in method references for those with the same name as other `lodash` methods. */
 var nativeMax = Math.max;
@@ -30,17 +30,16 @@ var nativeMax = Math.max;
  * @private
  * @param {Function|string} func The function or method name to wrap.
  * @param {number} bitmask The bitmask flags.
- *  The bitmask may be composed of the following flags:
- *     1 - `_.bind`
- *     2 - `_.bindKey`
- *     4 - `_.curry` or `_.curryRight` of a bound function
- *     8 - `_.curry`
- *    16 - `_.curryRight`
- *    32 - `_.partial`
- *    64 - `_.partialRight`
- *   128 - `_.rearg`
- *   256 - `_.ary`
- *   512 - `_.flip`
+ *    1 - `_.bind`
+ *    2 - `_.bindKey`
+ *    4 - `_.curry` or `_.curryRight` of a bound function
+ *    8 - `_.curry`
+ *   16 - `_.curryRight`
+ *   32 - `_.partial`
+ *   64 - `_.partialRight`
+ *  128 - `_.rearg`
+ *  256 - `_.ary`
+ *  512 - `_.flip`
  * @param {*} [thisArg] The `this` binding of `func`.
  * @param {Array} [partials] The arguments to be partially applied.
  * @param {Array} [holders] The `partials` placeholder indexes.
@@ -50,20 +49,20 @@ var nativeMax = Math.max;
  * @returns {Function} Returns the new wrapped function.
  */
 function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
-  var isBindKey = bitmask & BIND_KEY_FLAG;
+  var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
   if (!isBindKey && typeof func != 'function') {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
   var length = partials ? partials.length : 0;
   if (!length) {
-    bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
+    bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
     partials = holders = undefined;
   }
   ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
   arity = arity === undefined ? arity : toInteger(arity);
   length -= holders ? holders.length : 0;
 
-  if (bitmask & PARTIAL_RIGHT_FLAG) {
+  if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
     var partialsRight = partials,
         holdersRight = holders;
 
@@ -84,18 +83,18 @@ function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arit
   thisArg = newData[2];
   partials = newData[3];
   holders = newData[4];
-  arity = newData[9] = newData[9] == null
+  arity = newData[9] = newData[9] === undefined
     ? (isBindKey ? 0 : func.length)
     : nativeMax(newData[9] - length, 0);
 
-  if (!arity && bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG)) {
-    bitmask &= ~(CURRY_FLAG | CURRY_RIGHT_FLAG);
+  if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
+    bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
   }
-  if (!bitmask || bitmask == BIND_FLAG) {
+  if (!bitmask || bitmask == WRAP_BIND_FLAG) {
     var result = createBind(func, bitmask, thisArg);
-  } else if (bitmask == CURRY_FLAG || bitmask == CURRY_RIGHT_FLAG) {
+  } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
     result = createCurry(func, bitmask, arity);
-  } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !holders.length) {
+  } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
     result = createPartial(func, bitmask, thisArg, partials);
   } else {
     result = createHybrid.apply(undefined, newData);

_customDefaultsAssignIn.js

@@ -7,7 +7,9 @@ var objectProto = Object.prototype;
 var hasOwnProperty = objectProto.hasOwnProperty;
 
 /**
- * Used by `_.defaults` to customize its `_.assignIn` use.
+ * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
+ * of source objects to the destination object for all destination properties
+ * that resolve to `undefined`.
  *
  * @private
  * @param {*} objValue The destination value.
@@ -16,7 +18,7 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @param {Object} object The parent object of `objValue`.
  * @returns {*} Returns the value to assign.
  */
-function assignInDefaults(objValue, srcValue, key, object) {
+function customDefaultsAssignIn(objValue, srcValue, key, object) {
   if (objValue === undefined ||
       (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
     return srcValue;
@@ -24,4 +26,4 @@ function assignInDefaults(objValue, srcValue, key, object) {
   return objValue;
 }
 
-module.exports = assignInDefaults;
+module.exports = customDefaultsAssignIn;

_customDefaultsMerge.js

@@ -2,7 +2,8 @@ var baseMerge = require('./_baseMerge'),
     isObject = require('./isObject');
 
 /**
- * Used by `_.defaultsDeep` to customize its `_.merge` use.
+ * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
+ * objects into destination objects that are passed thru.
  *
  * @private
  * @param {*} objValue The destination value.
@@ -14,14 +15,14 @@ var baseMerge = require('./_baseMerge'),
  *  counterparts.
  * @returns {*} Returns the value to assign.
  */
-function mergeDefaults(objValue, srcValue, key, object, source, stack) {
+function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
   if (isObject(objValue) && isObject(srcValue)) {
     // Recursively merge objects and arrays (susceptible to call stack limits).
     stack.set(srcValue, objValue);
-    baseMerge(objValue, srcValue, undefined, mergeDefaults, stack);
+    baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
     stack['delete'](srcValue);
   }
   return objValue;
 }
 
-module.exports = mergeDefaults;
+module.exports = customDefaultsMerge;

_customOmitClone.js

@@ -0,0 +1,16 @@
+var isPlainObject = require('./isPlainObject');
+
+/**
+ * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
+ * objects.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @param {string} key The key of the property to inspect.
+ * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
+ */
+function customOmitClone(value) {
+  return isPlainObject(value) ? undefined : value;
+}
+
+module.exports = customOmitClone;

_equalArrays.js

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

_equalByTag.js

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

_equalObjects.js

@@ -1,7 +1,7 @@
-var keys = require('./keys');
+var getAllKeys = require('./_getAllKeys');
 
-/** Used to compose bitmasks for comparison styles. */
-var PARTIAL_COMPARE_FLAG = 2;
+/** Used to compose bitmasks for value comparisons. */
+var COMPARE_PARTIAL_FLAG = 1;
 
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
@@ -16,18 +16,17 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * @private
  * @param {Object} object The object to compare.
  * @param {Object} other The other object to compare.
- * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
  * @param {Function} customizer The function to customize comparisons.
- * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
- *  for more details.
+ * @param {Function} equalFunc The function to determine equivalents of values.
  * @param {Object} stack Tracks traversed `object` and `other` objects.
  * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
  */
-function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
-  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
-      objProps = keys(object),
+function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
+  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
+      objProps = getAllKeys(object),
       objLength = objProps.length,
-      othProps = keys(other),
+      othProps = getAllKeys(other),
       othLength = othProps.length;
 
   if (objLength != othLength && !isPartial) {
@@ -62,7 +61,7 @@ function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
     }
     // Recursively compare objects (susceptible to call stack limits).
     if (!(compared === undefined
-          ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))
+          ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
           : compared
         )) {
       result = false;

_getSymbols.js

@@ -1,16 +1,30 @@
-var overArg = require('./_overArg'),
+var arrayFilter = require('./_arrayFilter'),
     stubArray = require('./stubArray');
 
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/** Built-in value references. */
+var propertyIsEnumerable = objectProto.propertyIsEnumerable;
+
 /* Built-in method references for those with the same name as other `lodash` methods. */
 var nativeGetSymbols = Object.getOwnPropertySymbols;
 
 /**
- * Creates an array of the own enumerable symbol properties of `object`.
+ * Creates an array of the own enumerable symbols of `object`.
  *
  * @private
  * @param {Object} object The object to query.
  * @returns {Array} Returns the array of symbols.
  */
-var getSymbols = nativeGetSymbols ? overArg(nativeGetSymbols, Object) : stubArray;
+var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
+  if (object == null) {
+    return [];
+  }
+  object = Object(object);
+  return arrayFilter(nativeGetSymbols(object), function(symbol) {
+    return propertyIsEnumerable.call(object, symbol);
+  });
+};
 
 module.exports = getSymbols;

_getSymbolsIn.js

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

_hasPath.js

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

_hasUnicode.js

@@ -1,14 +1,16 @@
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
     rsVarRange = '\\ufe0e\\ufe0f';
 
 /** Used to compose unicode capture groups. */
 var rsZWJ = '\\u200d';
 
 /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
-var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
+var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');
 
 /**
  * Checks if `string` contains Unicode symbols.

_hasUnicodeWord.js

@@ -1,5 +1,5 @@
 /** 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 ]/;
+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.

_hashHas.js

@@ -17,7 +17,7 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  */
 function hashHas(key) {
   var data = this.__data__;
-  return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);
+  return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
 }
 
 module.exports = hashHas;

_initCloneArray.js

@@ -13,7 +13,7 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  */
 function initCloneArray(array) {
   var length = array.length,
-      result = array.constructor(length);
+      result = new array.constructor(length);
 
   // Add properties assigned by `RegExp#exec`.
   if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {

_initCloneByTag.js

@@ -1,8 +1,6 @@
 var cloneArrayBuffer = require('./_cloneArrayBuffer'),
     cloneDataView = require('./_cloneDataView'),
-    cloneMap = require('./_cloneMap'),
     cloneRegExp = require('./_cloneRegExp'),
-    cloneSet = require('./_cloneSet'),
     cloneSymbol = require('./_cloneSymbol'),
     cloneTypedArray = require('./_cloneTypedArray');
 
@@ -32,16 +30,15 @@ var arrayBufferTag = '[object ArrayBuffer]',
  * Initializes an object clone based on its `toStringTag`.
  *
  * **Note:** This function only supports cloning values with tags of
- * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
+ * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
  *
  * @private
  * @param {Object} object The object to clone.
  * @param {string} tag The `toStringTag` of the object to clone.
- * @param {Function} cloneFunc The function to clone values.
  * @param {boolean} [isDeep] Specify a deep clone.
  * @returns {Object} Returns the initialized clone.
  */
-function initCloneByTag(object, tag, cloneFunc, isDeep) {
+function initCloneByTag(object, tag, isDeep) {
   var Ctor = object.constructor;
   switch (tag) {
     case arrayBufferTag:
@@ -60,7 +57,7 @@ function initCloneByTag(object, tag, cloneFunc, isDeep) {
       return cloneTypedArray(object, isDeep);
 
     case mapTag:
-      return cloneMap(object, isDeep, cloneFunc);
+      return new Ctor;
 
     case numberTag:
     case stringTag:
@@ -70,7 +67,7 @@ function initCloneByTag(object, tag, cloneFunc, isDeep) {
       return cloneRegExp(object);
 
     case setTag:
-      return cloneSet(object, isDeep, cloneFunc);
+      return new Ctor;
 
     case symbolTag:
       return cloneSymbol(object);

_isIndex.js

@@ -13,10 +13,13 @@ var reIsUint = /^(?:0|[1-9]\d*)$/;
  * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
  */
 function isIndex(value, length) {
+  var type = typeof value;
   length = length == null ? MAX_SAFE_INTEGER : length;
+
   return !!length &&
-    (typeof value == 'number' || reIsUint.test(value)) &&
-    (value > -1 && value % 1 == 0 && value < length);
+    (type == 'number' ||
+      (type != 'symbol' && reIsUint.test(value))) &&
+        (value > -1 && value % 1 == 0 && value < length);
 }
 
 module.exports = isIndex;

_lazyValue.js

@@ -2,9 +2,6 @@ var baseWrapperValue = require('./_baseWrapperValue'),
     getView = require('./_getView'),
     isArray = require('./isArray');
 
-/** Used as the size to enable large array optimizations. */
-var LARGE_ARRAY_SIZE = 200;
-
 /** Used to indicate the type of lazy iteratees. */
 var LAZY_FILTER_FLAG = 1,
     LAZY_MAP_FLAG = 2;
@@ -36,8 +33,7 @@ function lazyValue() {
       resIndex = 0,
       takeCount = nativeMin(length, this.__takeCount__);
 
-  if (!isArr || arrLength < LARGE_ARRAY_SIZE ||
-      (arrLength == length && takeCount == length)) {
+  if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
     return baseWrapperValue(array, this.__actions__);
   }
   var result = [];

_mergeData.js

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

_nodeUtil.js

@@ -15,7 +15,15 @@ var freeProcess = moduleExports && freeGlobal.process;
 /** Used to access faster Node.js helpers. */
 var nodeUtil = (function() {
   try {
-    return freeProcess && freeProcess.binding('util');
+    // Use `util.types` for Node.js 10+.
+    var types = freeModule && freeModule.require && freeModule.require('util').types;
+
+    if (types) {
+      return types;
+    }
+
+    // Legacy `process.binding('util')` for Node.js < 10.
+    return freeProcess && freeProcess.binding && freeProcess.binding('util');
   } catch (e) {}
 }());
 

_parent.js

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

_safeGet.js

@@ -0,0 +1,21 @@
+/**
+ * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @param {string} key The key of the property to get.
+ * @returns {*} Returns the property value.
+ */
+function safeGet(object, key) {
+  if (key === 'constructor' && typeof object[key] === 'function') {
+    return;
+  }
+
+  if (key == '__proto__') {
+    return;
+  }
+
+  return object[key];
+}
+
+module.exports = safeGet;

_stringToPath.js

@@ -1,9 +1,7 @@
-var memoizeCapped = require('./_memoizeCapped'),
-    toString = require('./toString');
+var memoizeCapped = require('./_memoizeCapped');
 
 /** Used to match property names within property paths. */
-var reLeadingDot = /^\./,
-    rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
+var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
 
 /** Used to match backslashes in property paths. */
 var reEscapeChar = /\\(\\)?/g;
@@ -16,14 +14,12 @@ var reEscapeChar = /\\(\\)?/g;
  * @returns {Array} Returns the property path array.
  */
 var stringToPath = memoizeCapped(function(string) {
-  string = toString(string);
-
   var result = [];
-  if (reLeadingDot.test(string)) {
+  if (string.charCodeAt(0) === 46 /* . */) {
     result.push('');
   }
-  string.replace(rePropName, function(match, number, quote, string) {
-    result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
+  string.replace(rePropName, function(match, number, quote, subString) {
+    result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
   });
   return result;
 });

_unicodeSize.js

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

_unicodeToArray.js

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

_unicodeWords.js

@@ -1,7 +1,9 @@
 /** Used to compose unicode character classes. */
 var rsAstralRange = '\\ud800-\\udfff',
-    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
     rsDingbatRange = '\\u2700-\\u27bf',
     rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
     rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
@@ -15,7 +17,7 @@ var rsAstralRange = '\\ud800-\\udfff',
 /** Used to compose unicode capture groups. */
 var rsApos = "['\u2019]",
     rsBreak = '[' + rsBreakRange + ']',
-    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsCombo = '[' + rsComboRange + ']',
     rsDigits = '\\d+',
     rsDingbat = '[' + rsDingbatRange + ']',
     rsLower = '[' + rsLowerRange + ']',
@@ -36,8 +38,8 @@ var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
     reOptMod = rsModifier + '?',
     rsOptVar = '[' + rsVarRange + ']?',
     rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
-    rsOrdLower = '\\d*(?:(?:1st|2nd|3rd|(?![123])\\dth)\\b)',
-    rsOrdUpper = '\\d*(?:(?:1ST|2ND|3RD|(?![123])\\dTH)\\b)',
+    rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
+    rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
     rsSeq = rsOptVar + reOptMod + rsOptJoin,
     rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq;
 

_updateWrapDetails.js

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

ary.js

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

at.js

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

bind.js

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

bindKey.js

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

clone.js

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

cloneDeep.js

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

cloneDeepWith.js

@@ -1,5 +1,9 @@
 var baseClone = require('./_baseClone');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1,
+    CLONE_SYMBOLS_FLAG = 4;
+
 /**
  * This method is like `_.cloneWith` except that it recursively clones `value`.
  *
@@ -30,7 +34,7 @@ var baseClone = require('./_baseClone');
  */
 function cloneDeepWith(value, customizer) {
   customizer = typeof customizer == 'function' ? customizer : undefined;
-  return baseClone(value, true, true, customizer);
+  return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
 }
 
 module.exports = cloneDeepWith;

cloneWith.js

@@ -1,5 +1,8 @@
 var baseClone = require('./_baseClone');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_SYMBOLS_FLAG = 4;
+
 /**
  * This method is like `_.clone` except that it accepts `customizer` which
  * is invoked to produce the cloned value. If `customizer` returns `undefined`,
@@ -33,7 +36,7 @@ var baseClone = require('./_baseClone');
  */
 function cloneWith(value, customizer) {
   customizer = typeof customizer == 'function' ? customizer : undefined;
-  return baseClone(value, false, true, customizer);
+  return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
 }
 
 module.exports = cloneWith;

conforms.js

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

core.js

@@ -1,8 +1,8 @@
 /**
  * @license
- * lodash (Custom Build) <https://lodash.com/>
+ * Lodash (Custom Build) <https://lodash.com/>
  * Build: `lodash core -o ./dist/lodash.core.js`
- * Copyright JS Foundation and other contributors <https://js.foundation/>
+ * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
  * Released under MIT license <https://lodash.com/license>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
  * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
@@ -13,18 +13,18 @@
   var undefined;
 
   /** Used as the semantic version number. */
-  var VERSION = '4.16.5';
+  var VERSION = '4.17.15';
 
   /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
 
-  /** Used to compose bitmasks for function metadata. */
-  var BIND_FLAG = 1,
-      PARTIAL_FLAG = 32;
+  /** Used to compose bitmasks for value comparisons. */
+  var COMPARE_PARTIAL_FLAG = 1,
+      COMPARE_UNORDERED_FLAG = 2;
 
-  /** Used to compose bitmasks for comparison styles. */
-  var UNORDERED_COMPARE_FLAG = 1,
-      PARTIAL_COMPARE_FLAG = 2;
+  /** Used to compose bitmasks for function metadata. */
+  var WRAP_BIND_FLAG = 1,
+      WRAP_PARTIAL_FLAG = 32;
 
   /** Used as references for various `Number` constants. */
   var INFINITY = 1 / 0,
@@ -49,6 +49,9 @@
   var reUnescapedHtml = /[&<>"']/g,
       reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
 
+  /** Used to detect unsigned integer values. */
+  var reIsUint = /^(?:0|[1-9]\d*)$/;
+
   /** Used to map characters to HTML entities. */
   var htmlEscapes = {
     '&': '&amp;',
@@ -249,9 +252,9 @@
    * 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 `200` 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 and 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.
@@ -396,24 +399,6 @@
 
   /*------------------------------------------------------------------------*/
 
-  /**
-   * Used by `_.defaults` to customize its `_.assignIn` use.
-   *
-   * @private
-   * @param {*} objValue The destination value.
-   * @param {*} srcValue The source value.
-   * @param {string} key The key of the property to assign.
-   * @param {Object} object The parent object of `objValue`.
-   * @returns {*} Returns the value to assign.
-   */
-  function assignInDefaults(objValue, srcValue, key, object) {
-    if (objValue === undefined ||
-        (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
-      return srcValue;
-    }
-    return objValue;
-  }
-
   /**
    * Assigns `value` to `key` of `object` if the existing value is not equivalent
    * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
@@ -662,22 +647,21 @@
    * @private
    * @param {*} value The value to compare.
    * @param {*} other The other value to compare.
+   * @param {boolean} bitmask The bitmask flags.
+   *  1 - Unordered comparison
+   *  2 - Partial comparison
    * @param {Function} [customizer] The function to customize comparisons.
-   * @param {boolean} [bitmask] The bitmask of comparison flags.
-   *  The bitmask may be composed of the following flags:
-   *     1 - Unordered comparison
-   *     2 - Partial comparison
    * @param {Object} [stack] Tracks traversed `value` and `other` objects.
    * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
    */
-  function baseIsEqual(value, other, customizer, bitmask, stack) {
+  function baseIsEqual(value, other, bitmask, customizer, stack) {
     if (value === other) {
       return true;
     }
-    if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
+    if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
       return value !== value && other !== other;
     }
-    return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack);
+    return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
   }
 
   /**
@@ -688,27 +672,21 @@
    * @private
    * @param {Object} object The object to compare.
    * @param {Object} other The other object to compare.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+   * @param {Function} customizer The function to customize comparisons.
    * @param {Function} equalFunc The function to determine equivalents of values.
-   * @param {Function} [customizer] The function to customize comparisons.
-   * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
    * @param {Object} [stack] Tracks traversed `object` and `other` objects.
    * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
    */
-  function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) {
+  function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
     var objIsArr = isArray(object),
         othIsArr = isArray(other),
-        objTag = arrayTag,
-        othTag = arrayTag;
+        objTag = objIsArr ? arrayTag : baseGetTag(object),
+        othTag = othIsArr ? arrayTag : baseGetTag(other);
+
+    objTag = objTag == argsTag ? objectTag : objTag;
+    othTag = othTag == argsTag ? objectTag : othTag;
 
-    if (!objIsArr) {
-      objTag = baseGetTag(object);
-      objTag = objTag == argsTag ? objectTag : objTag;
-    }
-    if (!othIsArr) {
-      othTag = baseGetTag(other);
-      othTag = othTag == argsTag ? objectTag : othTag;
-    }
     var objIsObj = objTag == objectTag,
         othIsObj = othTag == objectTag,
         isSameTag = objTag == othTag;
@@ -727,12 +705,12 @@
     stack.push([other, object]);
     if (isSameTag && !objIsObj) {
       var result = (objIsArr)
-        ? equalArrays(object, other, equalFunc, customizer, bitmask, stack)
-        : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack);
+        ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
+        : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
       stack.pop();
       return result;
     }
-    if (!(bitmask & PARTIAL_COMPARE_FLAG)) {
+    if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
       var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
           othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
 
@@ -740,7 +718,7 @@
         var objUnwrapped = objIsWrapped ? object.value() : object,
             othUnwrapped = othIsWrapped ? other.value() : other;
 
-        var result = equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack);
+        var result = equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
         stack.pop();
         return result;
       }
@@ -748,7 +726,7 @@
     if (!isSameTag) {
       return false;
     }
-    var result = equalObjects(object, other, equalFunc, customizer, bitmask, stack);
+    var result = equalObjects(object, other, bitmask, customizer, equalFunc, stack);
     stack.pop();
     return result;
   }
@@ -830,7 +808,7 @@
       while (length--) {
         var key = props[length];
         if (!(key in object &&
-              baseIsEqual(source[key], object[key], undefined, UNORDERED_COMPARE_FLAG | PARTIAL_COMPARE_FLAG)
+              baseIsEqual(source[key], object[key], COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG)
             )) {
           return false;
         }
@@ -845,7 +823,7 @@
    *
    * @private
    * @param {Object} object The source object.
-   * @param {string[]} props The property identifiers to pick.
+   * @param {string[]} paths The property paths to pick.
    * @returns {Object} Returns the new object.
    */
   function basePick(object, props) {
@@ -1162,7 +1140,7 @@
     if (typeof func != 'function') {
       throw new TypeError(FUNC_ERROR_TEXT);
     }
-    var isBind = bitmask & BIND_FLAG,
+    var isBind = bitmask & WRAP_BIND_FLAG,
         Ctor = createCtor(func);
 
     function wrapper() {
@@ -1191,15 +1169,14 @@
    * @private
    * @param {Array} array The array to compare.
    * @param {Array} other The other array to compare.
-   * @param {Function} equalFunc The function to determine equivalents of values.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
    * @param {Function} customizer The function to customize comparisons.
-   * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
+   * @param {Function} equalFunc The function to determine equivalents of values.
    * @param {Object} stack Tracks traversed `array` and `other` objects.
    * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
    */
-  function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
-    var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
+  function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
+    var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
         arrLength = array.length,
         othLength = other.length;
 
@@ -1208,7 +1185,7 @@
     }
     var index = -1,
         result = true,
-        seen = (bitmask & UNORDERED_COMPARE_FLAG) ? [] : undefined;
+        seen = (bitmask & COMPARE_UNORDERED_FLAG) ? [] : undefined;
 
     // Ignore non-index properties.
     while (++index < arrLength) {
@@ -1227,7 +1204,7 @@
       if (seen) {
         if (!baseSome(other, function(othValue, othIndex) {
               if (!indexOf(seen, othIndex) &&
-                  (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {
+                  (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                 return seen.push(othIndex);
               }
             })) {
@@ -1236,7 +1213,7 @@
         }
       } else if (!(
             arrValue === othValue ||
-              equalFunc(arrValue, othValue, customizer, bitmask, stack)
+              equalFunc(arrValue, othValue, bitmask, customizer, stack)
           )) {
         result = false;
         break;
@@ -1256,14 +1233,13 @@
    * @param {Object} object The object to compare.
    * @param {Object} other The other object to compare.
    * @param {string} tag The `toStringTag` of the objects to compare.
-   * @param {Function} equalFunc The function to determine equivalents of values.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
    * @param {Function} customizer The function to customize comparisons.
-   * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
+   * @param {Function} equalFunc The function to determine equivalents of values.
    * @param {Object} stack Tracks traversed `object` and `other` objects.
    * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
    */
-  function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) {
+  function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
     switch (tag) {
 
       case boolTag:
@@ -1294,15 +1270,14 @@
    * @private
    * @param {Object} object The object to compare.
    * @param {Object} other The other object to compare.
-   * @param {Function} equalFunc The function to determine equivalents of values.
+   * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
    * @param {Function} customizer The function to customize comparisons.
-   * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual`
-   *  for more details.
+   * @param {Function} equalFunc The function to determine equivalents of values.
    * @param {Object} stack Tracks traversed `object` and `other` objects.
    * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
    */
-  function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
-    var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
+  function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
+    var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
         objProps = keys(object),
         objLength = objProps.length,
         othProps = keys(other),
@@ -1329,7 +1304,7 @@
       var compared;
       // Recursively compare objects (susceptible to call stack limits).
       if (!(compared === undefined
-            ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack))
+            ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
             : compared
           )) {
         result = false;
@@ -1374,6 +1349,48 @@
     return isArray(value) || isArguments(value);
   }
 
+  /**
+   * Checks if `value` is a valid array-like index.
+   *
+   * @private
+   * @param {*} value The value to check.
+   * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
+   * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
+   */
+  function isIndex(value, length) {
+    var type = typeof value;
+    length = length == null ? MAX_SAFE_INTEGER : length;
+
+    return !!length &&
+      (type == 'number' ||
+        (type != 'symbol' && reIsUint.test(value))) &&
+          (value > -1 && value % 1 == 0 && value < length);
+  }
+
+  /**
+   * Checks if the given arguments are from an iteratee call.
+   *
+   * @private
+   * @param {*} value The potential iteratee value argument.
+   * @param {*} index The potential iteratee index or key argument.
+   * @param {*} object The potential iteratee object argument.
+   * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
+   *  else `false`.
+   */
+  function isIterateeCall(value, index, object) {
+    if (!isObject(object)) {
+      return false;
+    }
+    var type = typeof index;
+    if (type == 'number'
+          ? (isArrayLike(object) && isIndex(index, object.length))
+          : (type == 'string' && index in object)
+        ) {
+      return eq(object[index], value);
+    }
+    return false;
+  }
+
   /**
    * This function is like
    * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
@@ -1444,15 +1461,6 @@
    */
   var setToString = identity;
 
-  /**
-   * Converts `value` to a string key if it's not a string or symbol.
-   *
-   * @private
-   * @param {*} value The value to inspect.
-   * @returns {string|symbol} Returns the key.
-   */
-  var toKey = String;
-
   /*------------------------------------------------------------------------*/
 
   /**
@@ -2273,7 +2281,7 @@
    * // => 'hi fred!'
    */
   var bind = baseRest(function(func, thisArg, partials) {
-    return createPartial(func, BIND_FLAG | PARTIAL_FLAG, thisArg, partials);
+    return createPartial(func, WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG, thisArg, partials);
   });
 
   /**
@@ -2612,7 +2620,7 @@
    * date objects, error objects, maps, numbers, `Object` objects, regexes,
    * sets, strings, symbols, and typed arrays. `Object` objects are compared
    * by their own, not inherited, enumerable properties. Functions and DOM
-   * nodes are **not** supported.
+   * nodes are compared by strict equality, i.e. `===`.
    *
    * @static
    * @memberOf _
@@ -3115,39 +3123,6 @@
     copyObject(source, nativeKeysIn(source), object);
   });
 
-  /**
-   * 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`
-   * is invoked with five arguments: (objValue, srcValue, key, object, source).
-   *
-   * **Note:** This method mutates `object`.
-   *
-   * @static
-   * @memberOf _
-   * @since 4.0.0
-   * @alias extendWith
-   * @category Object
-   * @param {Object} object The destination object.
-   * @param {...Object} sources The source objects.
-   * @param {Function} [customizer] The function to customize assigned values.
-   * @returns {Object} Returns `object`.
-   * @see _.assignWith
-   * @example
-   *
-   * function customizer(objValue, srcValue) {
-   *   return _.isUndefined(objValue) ? srcValue : objValue;
-   * }
-   *
-   * var defaults = _.partialRight(_.assignInWith, customizer);
-   *
-   * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
-   * // => { 'a': 1, 'b': 2 }
-   */
-  var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
-    copyObject(source, keysIn(source), object, customizer);
-  });
-
   /**
    * Creates an object that inherits from the `prototype` object. If a
    * `properties` object is given, its own enumerable string keyed properties
@@ -3208,9 +3183,35 @@
    * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
    * // => { 'a': 1, 'b': 2 }
    */
-  var defaults = baseRest(function(args) {
-    args.push(undefined, assignInDefaults);
-    return assignInWith.apply(undefined, args);
+  var defaults = baseRest(function(object, sources) {
+    object = Object(object);
+
+    var index = -1;
+    var length = sources.length;
+    var guard = length > 2 ? sources[2] : undefined;
+
+    if (guard && isIterateeCall(sources[0], sources[1], guard)) {
+      length = 1;
+    }
+
+    while (++index < length) {
+      var source = sources[index];
+      var props = keysIn(source);
+      var propsIndex = -1;
+      var propsLength = props.length;
+
+      while (++propsIndex < propsLength) {
+        var key = props[propsIndex];
+        var value = object[key];
+
+        if (value === undefined ||
+            (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
+          object[key] = source[key];
+        }
+      }
+    }
+
+    return object;
   });
 
   /**
@@ -3307,7 +3308,7 @@
    * @memberOf _
    * @category Object
    * @param {Object} object The source object.
-   * @param {...(string|string[])} [props] The property identifiers to pick.
+   * @param {...(string|string[])} [paths] The property paths to pick.
    * @returns {Object} Returns the new object.
    * @example
    *
@@ -3316,8 +3317,8 @@
    * _.pick(object, ['a', 'c']);
    * // => { 'a': 1, 'c': 3 }
    */
-  var pick = flatRest(function(object, props) {
-    return object == null ? {} : basePick(object, baseMap(props, toKey));
+  var pick = flatRest(function(object, paths) {
+    return object == null ? {} : basePick(object, paths);
   });
 
   /**

core.min.js

@@ -1,29 +1,29 @@
 /**
  * @license
- * lodash (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
+ * Lodash (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
  * Build: `lodash core -o ./dist/lodash.core.js`
  */
-;(function(){function n(n){return K(n)&&pn.call(n,"callee")&&!bn.call(n,"callee")}function t(n,t){return n.push.apply(n,t),n}function r(n){return function(t){return null==t?nn:t[n]}}function e(n,t,r,e,u){return u(n,function(n,u,o){r=e?(e=false,n):t(r,n,u,o)}),r}function u(n,t){return d(t,function(t){return n[t]})}function o(n){return n instanceof i?n:new i(n)}function i(n,t){this.__wrapped__=n,this.__actions__=[],this.__chain__=!!t}function c(n,t,r,e){return n===nn||M(n,ln[r])&&!pn.call(e,r)?t:n}function f(n,t,r){
-if(typeof n!="function")throw new TypeError("Expected a function");return setTimeout(function(){n.apply(nn,r)},t)}function a(n,t){var r=true;return mn(n,function(n,e,u){return r=!!t(n,e,u)}),r}function l(n,t,r){for(var e=-1,u=n.length;++e<u;){var o=n[e],i=t(o);if(null!=i&&(c===nn?i===i:r(i,c)))var c=i,f=o}return f}function p(n,t){var r=[];return mn(n,function(n,e,u){t(n,e,u)&&r.push(n)}),r}function s(n,r,e,u,o){var i=-1,c=n.length;for(e||(e=D),o||(o=[]);++i<c;){var f=n[i];0<r&&e(f)?1<r?s(f,r-1,e,u,o):t(o,f):u||(o[o.length]=f);
-}return o}function h(n,t){return n&&On(n,t,qn)}function v(n,t){return p(t,function(t){return V(n[t])})}function y(n,t){return n>t}function b(n,t,r,e,u){return n===t||(null==n||null==t||!H(n)&&!K(t)?n!==n&&t!==t:g(n,t,b,r,e,u))}function g(n,t,r,e,u,o){var i=Sn(n),c=Sn(t),f="[object Array]",a="[object Array]";i||(f=hn.call(n),f="[object Arguments]"==f?"[object Object]":f),c||(a=hn.call(t),a="[object Arguments]"==a?"[object Object]":a);var l="[object Object]"==f,c="[object Object]"==a,a=f==a;o||(o=[]);
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+return typeof n=="number"||H(n)&&"[object Number]"==hn.call(n)}function L(n){return typeof n=="string"||!Nn(n)&&H(n)&&"[object String]"==hn.call(n)}function Q(n){return typeof n=="string"?n:null==n?"":n+""}function W(n){return null==n?[]:u(n,Dn(n))}function X(n){return n}function Y(n,r,e){var u=Dn(r),o=h(r,u);null!=e||V(r)&&(o.length||!u.length)||(e=r,r=n,n=this,o=h(r,Dn(r)));var i=!(V(e)&&"chain"in e&&!e.chain),c=U(n);return mn(o,function(e){var u=r[e];n[e]=u,c&&(n.prototype[e]=function(){var r=this.__chain__;
+if(i||r){var e=n(this.__wrapped__);return(e.__actions__=A(this.__actions__)).push({func:u,args:arguments,thisArg:n}),e.__chain__=r,e}return u.apply(n,t([this.value()],arguments))})}),n}var Z,nn=1/0,tn=/[&<>"']/g,rn=RegExp(tn.source),en=/^(?:0|[1-9]\d*)$/,un=typeof self=="object"&&self&&self.Object===Object&&self,on=typeof global=="object"&&global&&global.Object===Object&&global||un||Function("return this")(),cn=(un=typeof exports=="object"&&exports&&!exports.nodeType&&exports)&&typeof module=="object"&&module&&!module.nodeType&&module,fn=function(n){
+return function(t){return null==n?Z:n[t]}}({"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"}),an=Array.prototype,ln=Object.prototype,pn=ln.hasOwnProperty,sn=0,hn=ln.toString,vn=on._,bn=Object.create,yn=ln.propertyIsEnumerable,gn=on.isFinite,_n=function(n,t){return function(r){return n(t(r))}}(Object.keys,Object),jn=Math.max,dn=function(){function n(){}return function(t){return V(t)?bn?bn(t):(n.prototype=t,t=new n,n.prototype=Z,t):{}}}();i.prototype=dn(o.prototype),i.prototype.constructor=i;
+var mn=function(n,t){return function(r,e){if(null==r)return r;if(!M(r))return n(r,e);for(var u=r.length,o=t?u:-1,i=Object(r);(t?o--:++o<u)&&false!==e(i[o],o,i););return r}}(s),On=function(n){return function(t,r,e){var u=-1,o=Object(t);e=e(t);for(var i=e.length;i--;){var c=e[n?i:++u];if(false===r(o[c],c,o))break}return t}}(),xn=X,An=function(n){return function(t,r,e){var u=Object(t);if(!M(t)){var o=g(r);t=Dn(t),r=function(n){return o(u[n],n,u)}}return r=n(t,r,e),-1<r?u[o?t[r]:r]:Z}}(function(n,t,r){var e=null==n?0:n.length;
+if(!e)return-1;r=null==r?0:Fn(r),0>r&&(r=jn(e+r,0));n:{for(t=g(t),e=n.length,r+=-1;++r<e;)if(t(n[r],r,n)){n=r;break n}n=-1}return n}),En=O(function(n,t,r){return S(n,t,r)}),wn=O(function(n,t){return c(n,1,t)}),kn=O(function(n,t,r){return c(n,Sn(t)||0,r)}),Nn=Array.isArray,Fn=Number,Sn=Number,Tn=N(function(n,t){k(t,_n(t),n)}),Bn=N(function(n,t){k(t,D(t),n)}),Rn=O(function(n,t){n=Object(n);var r,e=-1,u=t.length,o=2<u?t[2]:Z;if(r=o){r=t[0];var i=t[1];if(V(o)){var c=typeof i;if("number"==c){if(c=M(o))var c=o.length,f=typeof i,c=null==c?9007199254740991:c,c=!!c&&("number"==f||"symbol"!=f&&en.test(i))&&-1<i&&0==i%1&&i<c;
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+return t(Nn(e)?A(e):[e],p(r,1))},o.create=function(n,t){var r=dn(n);return null==t?r:Tn(r,t)},o.defaults=Rn,o.defer=wn,o.delay=kn,o.filter=function(n,t){return l(n,g(t))},o.flatten=$,o.flattenDeep=function(n){return(null==n?0:n.length)?p(n,nn):[]},o.iteratee=g,o.keys=Dn,o.map=function(n,t){return j(n,g(t))},o.matches=function(n){return d(Tn({},n))},o.mixin=Y,o.negate=function(n){if(typeof n!="function")throw new TypeError("Expected a function");return function(){return!n.apply(this,arguments)}},o.once=function(n){
+return G(2,n)},o.pick=$n,o.slice=function(n,t,r){var e=null==n?0:n.length;return r=r===Z?e:+r,e?x(n,null==t?0:+t,r):[]},o.sortBy=function(n,t){var e=0;return t=g(t),j(j(n,function(n,r,u){return{value:n,index:e++,criteria:t(n,r,u)}}).sort(function(n,t){var r;n:{r=n.criteria;var e=t.criteria;if(r!==e){var u=r!==Z,o=null===r,i=r===r,c=e!==Z,f=null===e,a=e===e;if(!f&&r>e||o&&c&&a||!u&&a||!i){r=1;break n}if(!o&&r<e||f&&u&&i||!c&&i||!a){r=-1;break n}}r=0}return r||n.index-t.index}),r("value"))},o.tap=function(n,t){
+return t(n),n},o.thru=function(n,t){return t(n)},o.toArray=function(n){return M(n)?n.length?A(n):[]:W(n)},o.values=W,o.extend=Bn,Y(o,o),o.clone=function(n){return V(n)?Nn(n)?A(n):k(n,_n(n)):n},o.escape=function(n){return(n=Q(n))&&rn.test(n)?n.replace(tn,fn):n},o.every=function(n,t,r){return t=r?Z:t,f(n,g(t))},o.find=An,o.forEach=z,o.has=function(n,t){return null!=n&&pn.call(n,t)},o.head=q,o.identity=X,o.indexOf=P,o.isArguments=n,o.isArray=Nn,o.isBoolean=function(n){return true===n||false===n||H(n)&&"[object Boolean]"==hn.call(n);
+},o.isDate=function(n){return H(n)&&"[object Date]"==hn.call(n)},o.isEmpty=function(t){return M(t)&&(Nn(t)||L(t)||U(t.splice)||n(t))?!t.length:!_n(t).length},o.isEqual=function(n,t){return b(n,t)},o.isFinite=function(n){return typeof n=="number"&&gn(n)},o.isFunction=U,o.isNaN=function(n){return K(n)&&n!=+n},o.isNull=function(n){return null===n},o.isNumber=K,o.isObject=V,o.isRegExp=function(n){return H(n)&&"[object RegExp]"==hn.call(n)},o.isString=L,o.isUndefined=function(n){return n===Z},o.last=function(n){
+var t=null==n?0:n.length;return t?n[t-1]:Z},o.max=function(n){return n&&n.length?a(n,X,v):Z},o.min=function(n){return n&&n.length?a(n,X,_):Z},o.noConflict=function(){return on._===this&&(on._=vn),this},o.noop=function(){},o.reduce=C,o.result=function(n,t,r){return t=null==n?Z:n[t],t===Z&&(t=r),U(t)?t.call(n):t},o.size=function(n){return null==n?0:(n=M(n)?n:_n(n),n.length)},o.some=function(n,t,r){return t=r?Z:t,E(n,g(t))},o.uniqueId=function(n){var t=++sn;return Q(n)+t},o.each=z,o.first=q,Y(o,function(){
+var n={};return s(o,function(t,r){pn.call(o.prototype,r)||(n[r]=t)}),n}(),{chain:false}),o.VERSION="4.17.15",mn("pop join replace reverse split push shift sort splice unshift".split(" "),function(n){var t=(/^(?:replace|split)$/.test(n)?String.prototype:an)[n],r=/^(?:push|sort|unshift)$/.test(n)?"tap":"thru",e=/^(?:pop|join|replace|shift)$/.test(n);o.prototype[n]=function(){var n=arguments;if(e&&!this.__chain__){var u=this.value();return t.apply(Nn(u)?u:[],n)}return this[r](function(r){return t.apply(Nn(r)?r:[],n);
+})}}),o.prototype.toJSON=o.prototype.valueOf=o.prototype.value=function(){return w(this.__wrapped__,this.__actions__)},typeof define=="function"&&typeof define.amd=="object"&&define.amd?(on._=o, define(function(){return o})):cn?((cn.exports=o)._=o,un._=o):on._=o}).call(this);

curry.js

@@ -1,7 +1,7 @@
 var createWrap = require('./_createWrap');
 
 /** Used to compose bitmasks for function metadata. */
-var CURRY_FLAG = 8;
+var WRAP_CURRY_FLAG = 8;
 
 /**
  * Creates a function that accepts arguments of `func` and either invokes
@@ -46,7 +46,7 @@ var CURRY_FLAG = 8;
  */
 function curry(func, arity, guard) {
   arity = guard ? undefined : arity;
-  var result = createWrap(func, CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
+  var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
   result.placeholder = curry.placeholder;
   return result;
 }

curryRight.js

@@ -1,7 +1,7 @@
 var createWrap = require('./_createWrap');
 
 /** Used to compose bitmasks for function metadata. */
-var CURRY_RIGHT_FLAG = 16;
+var WRAP_CURRY_RIGHT_FLAG = 16;
 
 /**
  * This method is like `_.curry` except that arguments are applied to `func`
@@ -43,7 +43,7 @@ var CURRY_RIGHT_FLAG = 16;
  */
 function curryRight(func, arity, guard) {
   arity = guard ? undefined : arity;
-  var result = createWrap(func, CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
+  var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
   result.placeholder = curryRight.placeholder;
   return result;
 }

debounce.js

@@ -108,9 +108,11 @@ function debounce(func, wait, options) {
   function remainingWait(time) {
     var timeSinceLastCall = time - lastCallTime,
         timeSinceLastInvoke = time - lastInvokeTime,
-        result = wait - timeSinceLastCall;
+        timeWaiting = wait - timeSinceLastCall;
 
-    return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;
+    return maxing
+      ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
+      : timeWaiting;
   }
 
   function shouldInvoke(time) {
@@ -171,6 +173,7 @@ function debounce(func, wait, options) {
       }
       if (maxing) {
         // Handle invocations in a tight loop.
+        clearTimeout(timerId);
         timerId = setTimeout(timerExpired, wait);
         return invokeFunc(lastCallTime);
       }

deburr.js

@@ -5,11 +5,13 @@ var deburrLetter = require('./_deburrLetter'),
 var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
 
 /** Used to compose unicode character classes. */
-var rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
-    rsComboSymbolsRange = '\\u20d0-\\u20f0';
+var rsComboMarksRange = '\\u0300-\\u036f',
+    reComboHalfMarksRange = '\\ufe20-\\ufe2f',
+    rsComboSymbolsRange = '\\u20d0-\\u20ff',
+    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange;
 
 /** Used to compose unicode capture groups. */
-var rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']';
+var rsCombo = '[' + rsComboRange + ']';
 
 /**
  * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and

defaults.js

@@ -1,7 +1,13 @@
-var apply = require('./_apply'),
-    assignInDefaults = require('./_assignInDefaults'),
-    assignInWith = require('./assignInWith'),
-    baseRest = require('./_baseRest');
+var baseRest = require('./_baseRest'),
+    eq = require('./eq'),
+    isIterateeCall = require('./_isIterateeCall'),
+    keysIn = require('./keysIn');
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
 
 /**
  * Assigns own and inherited enumerable string keyed properties of source
@@ -24,9 +30,35 @@ var apply = require('./_apply'),
  * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
  * // => { 'a': 1, 'b': 2 }
  */
-var defaults = baseRest(function(args) {
-  args.push(undefined, assignInDefaults);
-  return apply(assignInWith, undefined, args);
+var defaults = baseRest(function(object, sources) {
+  object = Object(object);
+
+  var index = -1;
+  var length = sources.length;
+  var guard = length > 2 ? sources[2] : undefined;
+
+  if (guard && isIterateeCall(sources[0], sources[1], guard)) {
+    length = 1;
+  }
+
+  while (++index < length) {
+    var source = sources[index];
+    var props = keysIn(source);
+    var propsIndex = -1;
+    var propsLength = props.length;
+
+    while (++propsIndex < propsLength) {
+      var key = props[propsIndex];
+      var value = object[key];
+
+      if (value === undefined ||
+          (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
+        object[key] = source[key];
+      }
+    }
+  }
+
+  return object;
 });
 
 module.exports = defaults;

defaultsDeep.js

@@ -1,6 +1,6 @@
 var apply = require('./_apply'),
     baseRest = require('./_baseRest'),
-    mergeDefaults = require('./_mergeDefaults'),
+    customDefaultsMerge = require('./_customDefaultsMerge'),
     mergeWith = require('./mergeWith');
 
 /**
@@ -23,7 +23,7 @@ var apply = require('./_apply'),
  * // => { 'a': { 'b': 2, 'c': 3 } }
  */
 var defaultsDeep = baseRest(function(args) {
-  args.push(undefined, mergeDefaults);
+  args.push(undefined, customDefaultsMerge);
   return apply(mergeWith, undefined, args);
 });
 

flip.js

@@ -1,7 +1,7 @@
 var createWrap = require('./_createWrap');
 
 /** Used to compose bitmasks for function metadata. */
-var FLIP_FLAG = 512;
+var WRAP_FLIP_FLAG = 512;
 
 /**
  * Creates a function that invokes `func` with arguments reversed.
@@ -22,7 +22,7 @@ var FLIP_FLAG = 512;
  * // => ['d', 'c', 'b', 'a']
  */
 function flip(func) {
-  return createWrap(func, FLIP_FLAG);
+  return createWrap(func, WRAP_FLIP_FLAG);
 }
 
 module.exports = flip;

fp/_baseConvert.js

@@ -1,6 +1,9 @@
 var mapping = require('./_mapping'),
     fallbackHolder = require('./placeholder');
 
+/** Built-in value reference. */
+var push = Array.prototype.push;
+
 /**
  * Creates a function, with an arity of `n`, that invokes `func` with the
  * arguments it receives.
@@ -61,6 +64,37 @@ function createCloner(func) {
   };
 }
 
+/**
+ * A specialized version of `_.spread` which flattens the spread array into
+ * the arguments of the invoked `func`.
+ *
+ * @private
+ * @param {Function} func The function to spread arguments over.
+ * @param {number} start The start position of the spread.
+ * @returns {Function} Returns the new function.
+ */
+function flatSpread(func, start) {
+  return function() {
+    var length = arguments.length,
+        lastIndex = length - 1,
+        args = Array(length);
+
+    while (length--) {
+      args[length] = arguments[length];
+    }
+    var array = args[start],
+        otherArgs = args.slice(0, start);
+
+    if (array) {
+      push.apply(otherArgs, array);
+    }
+    if (start != lastIndex) {
+      push.apply(otherArgs, args.slice(start + 1));
+    }
+    return func.apply(this, otherArgs);
+  };
+}
+
 /**
  * Creates a function that wraps `func` and uses `cloner` to clone the first
  * argument it receives.
@@ -102,8 +136,7 @@ function wrapImmutable(func, cloner) {
  * @returns {Function|Object} Returns the converted function or object.
  */
 function baseConvert(util, name, func, options) {
-  var setPlaceholder,
-      isLib = typeof name == 'function',
+  var isLib = typeof name == 'function',
       isObj = name === Object(name);
 
   if (isObj) {
@@ -124,10 +157,10 @@ function baseConvert(util, name, func, options) {
     'rearg': 'rearg' in options ? options.rearg : true
   };
 
-  var forceCurry = ('curry' in options) && options.curry,
+  var defaultHolder = isLib ? func : fallbackHolder,
+      forceCurry = ('curry' in options) && options.curry,
       forceFixed = ('fixed' in options) && options.fixed,
       forceRearg = ('rearg' in options) && options.rearg,
-      placeholder = isLib ? func : fallbackHolder,
       pristine = isLib ? func.runInContext() : undefined;
 
   var helpers = isLib ? func : {
@@ -137,11 +170,12 @@ function baseConvert(util, name, func, options) {
     'curry': util.curry,
     'forEach': util.forEach,
     'isArray': util.isArray,
+    'isError': util.isError,
     'isFunction': util.isFunction,
+    'isWeakMap': util.isWeakMap,
     'iteratee': util.iteratee,
     'keys': util.keys,
     'rearg': util.rearg,
-    'spread': util.spread,
     'toInteger': util.toInteger,
     'toPath': util.toPath
   };
@@ -152,10 +186,11 @@ function baseConvert(util, name, func, options) {
       curry = helpers.curry,
       each = helpers.forEach,
       isArray = helpers.isArray,
+      isError = helpers.isError,
       isFunction = helpers.isFunction,
+      isWeakMap = helpers.isWeakMap,
       keys = helpers.keys,
       rearg = helpers.rearg,
-      spread = helpers.spread,
       toInteger = helpers.toInteger,
       toPath = helpers.toPath;
 
@@ -282,7 +317,7 @@ function baseConvert(util, name, func, options) {
       var data = mapping.methodSpread[name],
           start = data && data.start;
 
-      return start  === undefined ? ary(func, n) : spread(func, start);
+      return start  === undefined ? ary(func, n) : flatSpread(func, start);
     }
     return func;
   }
@@ -323,8 +358,9 @@ function baseConvert(util, name, func, options) {
       var key = path[index],
           value = nested[key];
 
-      if (value != null) {
-        nested[path[index]] = clone(index == lastIndex ? value : Object(value));
+      if (value != null &&
+          !(isFunction(value) || isError(value) || isWeakMap(value))) {
+        nested[key] = clone(index == lastIndex ? value : Object(value));
       }
       nested = nested[key];
     }
@@ -429,7 +465,7 @@ function baseConvert(util, name, func, options) {
    * @param {Function} func The function to wrap.
    * @returns {Function} Returns the converted function.
    */
-  function wrap(name, func) {
+  function wrap(name, func, placeholder) {
     var result,
         realName = mapping.aliasToReal[name] || name,
         wrapped = func,
@@ -452,8 +488,8 @@ function baseConvert(util, name, func, options) {
     each(aryMethodKeys, function(aryKey) {
       each(mapping.aryMethod[aryKey], function(otherName) {
         if (realName == otherName) {
-          var spreadData = mapping.methodSpread[realName],
-              afterRearg = spreadData && spreadData.afterRearg;
+          var data = mapping.methodSpread[realName],
+              afterRearg = data && data.afterRearg;
 
           result = afterRearg
             ? castFixed(realName, castRearg(realName, wrapped, aryKey), aryKey)
@@ -474,17 +510,15 @@ function baseConvert(util, name, func, options) {
       };
     }
     result.convert = createConverter(realName, func);
-    if (mapping.placeholder[realName]) {
-      setPlaceholder = true;
-      result.placeholder = func.placeholder = placeholder;
-    }
+    result.placeholder = func.placeholder = placeholder;
+
     return result;
   }
 
   /*--------------------------------------------------------------------------*/
 
   if (!isObj) {
-    return wrap(name, func);
+    return wrap(name, func, defaultHolder);
   }
   var _ = func;
 
@@ -494,7 +528,7 @@ function baseConvert(util, name, func, options) {
     each(mapping.aryMethod[aryKey], function(key) {
       var func = _[mapping.remap[key] || key];
       if (func) {
-        pairs.push([key, wrap(key, func)]);
+        pairs.push([key, wrap(key, func, _)]);
       }
     });
   });
@@ -520,9 +554,8 @@ function baseConvert(util, name, func, options) {
   });
 
   _.convert = convertLib;
-  if (setPlaceholder) {
-    _.placeholder = placeholder;
-  }
+  _.placeholder = _;
+
   // Assign aliases.
   each(keys(_), function(key) {
     each(mapping.realToAlias[key] || [], function(alias) {

fp/_mapping.js

@@ -167,14 +167,15 @@ exports.iterateeAry = {
 
 /** Used to map method names to iteratee rearg configs. */
 exports.iterateeRearg = {
-  'mapKeys': [1]
+  'mapKeys': [1],
+  'reduceRight': [1, 0]
 };
 
 /** Used to map method names to rearg configs. */
 exports.methodRearg = {
-  'assignInAllWith': [1, 2, 0],
+  'assignInAllWith': [1, 0],
   'assignInWith': [1, 2, 0],
-  'assignAllWith': [1, 2, 0],
+  'assignAllWith': [1, 0],
   'assignWith': [1, 2, 0],
   'differenceBy': [1, 2, 0],
   'differenceWith': [1, 2, 0],
@@ -183,7 +184,7 @@ exports.methodRearg = {
   'intersectionWith': [1, 2, 0],
   'isEqualWith': [1, 2, 0],
   'isMatchWith': [2, 1, 0],
-  'mergeAllWith': [1, 2, 0],
+  'mergeAllWith': [1, 0],
   'mergeWith': [1, 2, 0],
   'padChars': [2, 1, 0],
   'padCharsEnd': [2, 1, 0],
@@ -206,15 +207,15 @@ exports.methodRearg = {
 /** Used to map method names to spread configs. */
 exports.methodSpread = {
   'assignAll': { 'start': 0 },
-  'assignAllWith': { 'afterRearg': true, 'start': 1 },
+  'assignAllWith': { 'start': 0 },
   'assignInAll': { 'start': 0 },
-  'assignInAllWith': { 'afterRearg': true, 'start': 1 },
+  'assignInAllWith': { 'start': 0 },
   'defaultsAll': { 'start': 0 },
   'defaultsDeepAll': { 'start': 0 },
   'invokeArgs': { 'start': 2 },
   'invokeArgsMap': { 'start': 2 },
   'mergeAll': { 'start': 0 },
-  'mergeAllWith': { 'afterRearg': true, 'start': 1 },
+  'mergeAllWith': { 'start': 0 },
   'partial': { 'start': 1 },
   'partialRight': { 'start': 1 },
   'without': { 'start': 1 },
@@ -260,16 +261,6 @@ exports.mutate = {
   }
 };
 
-/** Used to track methods with placeholder support */
-exports.placeholder = {
-  'bind': true,
-  'bindKey': true,
-  'curry': true,
-  'curryRight': true,
-  'partial': true,
-  'partialRight': true
-};
-
 /** Used to map real names to their aliases. */
 exports.realToAlias = (function() {
   var hasOwnProperty = Object.prototype.hasOwnProperty,

fp/_util.js

@@ -5,11 +5,12 @@ module.exports = {
   'curry': require('../curry'),
   'forEach': require('../_arrayEach'),
   'isArray': require('../isArray'),
+  'isError': require('../isError'),
   'isFunction': require('../isFunction'),
+  'isWeakMap': require('../isWeakMap'),
   'iteratee': require('../iteratee'),
   'keys': require('../_baseKeys'),
   'rearg': require('../rearg'),
-  'spread': require('../spread'),
   'toInteger': require('../toInteger'),
   'toPath': require('../toPath')
 };

invert.js

@@ -2,6 +2,16 @@ var constant = require('./constant'),
     createInverter = require('./_createInverter'),
     identity = require('./identity');
 
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var nativeObjectToString = objectProto.toString;
+
 /**
  * Creates an object composed of the inverted keys and values of `object`.
  * If `object` contains duplicate values, subsequent values overwrite
@@ -21,6 +31,11 @@ var constant = require('./constant'),
  * // => { '1': 'c', '2': 'b' }
  */
 var invert = createInverter(function(result, value, key) {
+  if (value != null &&
+      typeof value.toString != 'function') {
+    value = nativeObjectToString.call(value);
+  }
+
   result[value] = key;
 }, constant(identity));
 

invertBy.js

@@ -7,6 +7,13 @@ var objectProto = Object.prototype;
 /** Used to check objects for own properties. */
 var hasOwnProperty = objectProto.hasOwnProperty;
 
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var nativeObjectToString = objectProto.toString;
+
 /**
  * This method is like `_.invert` except that the inverted object is generated
  * from the results of running each element of `object` thru `iteratee`. The
@@ -34,6 +41,11 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
  */
 var invertBy = createInverter(function(result, value, key) {
+  if (value != null &&
+      typeof value.toString != 'function') {
+    value = nativeObjectToString.call(value);
+  }
+
   if (hasOwnProperty.call(result, value)) {
     result[value].push(key);
   } else {

invokeMap.js

@@ -2,8 +2,7 @@ var apply = require('./_apply'),
     baseEach = require('./_baseEach'),
     baseInvoke = require('./_baseInvoke'),
     baseRest = require('./_baseRest'),
-    isArrayLike = require('./isArrayLike'),
-    isKey = require('./_isKey');
+    isArrayLike = require('./isArrayLike');
 
 /**
  * Invokes the method at `path` of each element in `collection`, returning
@@ -31,12 +30,10 @@ var apply = require('./_apply'),
 var invokeMap = baseRest(function(collection, path, args) {
   var index = -1,
       isFunc = typeof path == 'function',
-      isProp = isKey(path),
       result = isArrayLike(collection) ? Array(collection.length) : [];
 
   baseEach(collection, function(value) {
-    var func = isFunc ? path : ((isProp && value != null) ? value[path] : undefined);
-    result[++index] = func ? apply(func, value, args) : baseInvoke(value, path, args);
+    result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
   });
   return result;
 });

isEqual.js

@@ -8,7 +8,7 @@ var baseIsEqual = require('./_baseIsEqual');
  * date objects, error objects, maps, numbers, `Object` objects, regexes,
  * sets, strings, symbols, and typed arrays. `Object` objects are compared
  * by their own, not inherited, enumerable properties. Functions and DOM
- * nodes are **not** supported.
+ * nodes are compared by strict equality, i.e. `===`.
  *
  * @static
  * @memberOf _

isEqualWith.js

@@ -35,7 +35,7 @@ var baseIsEqual = require('./_baseIsEqual');
 function isEqualWith(value, other, customizer) {
   customizer = typeof customizer == 'function' ? customizer : undefined;
   var result = customizer ? customizer(value, other) : undefined;
-  return result === undefined ? baseIsEqual(value, other, customizer) : !!result;
+  return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
 }
 
 module.exports = isEqualWith;

isNative.js

@@ -2,7 +2,7 @@ var baseIsNative = require('./_baseIsNative'),
     isMaskable = require('./_isMaskable');
 
 /** Error message constants. */
-var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://github.com/es-shims.';
+var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.';
 
 /**
  * Checks if `value` is a pristine native function.

iteratee.js

@@ -1,6 +1,9 @@
 var baseClone = require('./_baseClone'),
     baseIteratee = require('./_baseIteratee');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1;
+
 /**
  * Creates a function that invokes `func` with the arguments of the created
  * function. If `func` is a property name, the created function returns the
@@ -44,7 +47,7 @@ var baseClone = require('./_baseClone'),
  * // => ['def']
  */
 function iteratee(func) {
-  return baseIteratee(typeof func == 'function' ? func : baseClone(func, true));
+  return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
 }
 
 module.exports = iteratee;

lodash.min.js

@@ -1,136 +1,137 @@
 /**
  * @license
- * lodash lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
+ * Lodash lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
  */
-;(function(){function n(n,t){return n.set(t[0],t[1]),n}function t(n,t){return n.add(t),n}function r(n,t,r){switch(r.length){case 0:return n.call(t);case 1:return n.call(t,r[0]);case 2:return n.call(t,r[0],r[1]);case 3:return n.call(t,r[0],r[1],r[2])}return n.apply(t,r)}function e(n,t,r,e){for(var u=-1,i=null==n?0:n.length;++u<i;){var o=n[u];t(e,o,r(o),n)}return e}function u(n,t){for(var r=-1,e=null==n?0:n.length;++r<e&&false!==t(n[r],r,n););return n}function i(n,t){for(var r=null==n?0:n.length;r--&&false!==t(n[r],r,n););
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+Or(n,0,t).join("")):n},An.trimStart=function(n,t,r){return(n=Iu(n))&&(r||t===T)?n.replace(on,""):n&&(t=yr(t))?(n=M(n),t=I(n,M(t)),Or(n,t).join("")):n},An.truncate=function(n,t){var r=30,e="...";if(du(t))var u="separator"in t?t.separator:u,r="length"in t?Eu(t.length):r,e="omission"in t?yr(t.omission):e;n=Iu(n);var i=n.length;if(Rn.test(n))var o=M(n),i=o.length;if(r>=i)return n;if(i=r-D(e),1>i)return e;if(r=o?Or(o,0,i).join(""):n.slice(0,i),u===T)return r+e;if(o&&(i+=r.length-i),hf(u)){if(n.slice(i).search(u)){
+var f=r;for(u.global||(u=Xu(u.source,Iu(_n.exec(u))+"g")),u.lastIndex=0;o=u.exec(f);)var c=o.index;r=r.slice(0,c===T?i:c)}}else n.indexOf(yr(u),i)!=i&&(u=r.lastIndexOf(u),-1<u&&(r=r.slice(0,u)));return r+e},An.unescape=function(n){return(n=Iu(n))&&G.test(n)?n.replace(V,tt):n},An.uniqueId=function(n){var t=++fi;return Iu(n)+t},An.upperCase=Tf,An.upperFirst=$f,An.each=nu,An.eachRight=tu,An.first=qe,Nu(An,function(){var n={};return mt(An,function(t,r){oi.call(An.prototype,r)||(n[r]=t)}),n}(),{chain:false
+}),An.VERSION="4.17.15",r("bind bindKey curry curryRight partial partialRight".split(" "),function(n){An[n].placeholder=An}),r(["drop","take"],function(n,t){Un.prototype[n]=function(r){r=r===T?1:Ui(Eu(r),0);var e=this.__filtered__&&!t?new Un(this):this.clone();return e.__filtered__?e.__takeCount__=Ci(r,e.__takeCount__):e.__views__.push({size:Ci(r,4294967295),type:n+(0>e.__dir__?"Right":"")}),e},Un.prototype[n+"Right"]=function(t){return this.reverse()[n](t).reverse()}}),r(["filter","map","takeWhile"],function(n,t){
+var r=t+1,e=1==r||3==r;Un.prototype[n]=function(n){var t=this.clone();return t.__iteratees__.push({iteratee:ye(n,3),type:r}),t.__filtered__=t.__filtered__||e,t}}),r(["head","last"],function(n,t){var r="take"+(t?"Right":"");Un.prototype[n]=function(){return this[r](1).value()[0]}}),r(["initial","tail"],function(n,t){var r="drop"+(t?"":"Right");Un.prototype[n]=function(){return this.__filtered__?new Un(this):this[r](1)}}),Un.prototype.compact=function(){return this.filter($u)},Un.prototype.find=function(n){
+return this.filter(n).head()},Un.prototype.findLast=function(n){return this.reverse().find(n)},Un.prototype.invokeMap=fr(function(n,t){return typeof n=="function"?new Un(this):this.map(function(r){return Lt(r,n,t)})}),Un.prototype.reject=function(n){return this.filter(au(ye(n)))},Un.prototype.slice=function(n,t){n=Eu(n);var r=this;return r.__filtered__&&(0<n||0>t)?new Un(r):(0>n?r=r.takeRight(-n):n&&(r=r.drop(n)),t!==T&&(t=Eu(t),r=0>t?r.dropRight(-t):r.take(t-n)),r)},Un.prototype.takeRightWhile=function(n){
+return this.reverse().takeWhile(n).reverse()},Un.prototype.toArray=function(){return this.take(4294967295)},mt(Un.prototype,function(n,t){var r=/^(?:filter|find|map|reject)|While$/.test(t),e=/^(?:head|last)$/.test(t),u=An[e?"take"+("last"==t?"Right":""):t],i=e||/^find/.test(t);u&&(An.prototype[t]=function(){function t(n){return n=u.apply(An,a([n],f)),e&&h?n[0]:n}var o=this.__wrapped__,f=e?[1]:arguments,c=o instanceof Un,l=f[0],s=c||ff(o);s&&r&&typeof l=="function"&&1!=l.length&&(c=s=false);var h=this.__chain__,p=!!this.__actions__.length,l=i&&!h,c=c&&!p;
+return!i&&s?(o=c?o:new Un(this),o=n.apply(o,f),o.__actions__.push({func:Qe,args:[t],thisArg:T}),new On(o,h)):l&&c?n.apply(this,f):(o=this.thru(t),l?e?o.value()[0]:o.value():o)})}),r("pop push shift sort splice unshift".split(" "),function(n){var t=ri[n],r=/^(?:push|sort|unshift)$/.test(n)?"tap":"thru",e=/^(?:pop|shift)$/.test(n);An.prototype[n]=function(){var n=arguments;if(e&&!this.__chain__){var u=this.value();return t.apply(ff(u)?u:[],n)}return this[r](function(r){return t.apply(ff(r)?r:[],n)});
+}}),mt(Un.prototype,function(n,t){var r=An[t];if(r){var e=r.name+"";oi.call(Gi,e)||(Gi[e]=[]),Gi[e].push({name:t,func:r})}}),Gi[Jr(T,2).name]=[{name:"wrapper",func:T}],Un.prototype.clone=function(){var n=new Un(this.__wrapped__);return n.__actions__=Ur(this.__actions__),n.__dir__=this.__dir__,n.__filtered__=this.__filtered__,n.__iteratees__=Ur(this.__iteratees__),n.__takeCount__=this.__takeCount__,n.__views__=Ur(this.__views__),n},Un.prototype.reverse=function(){if(this.__filtered__){var n=new Un(this);
+n.__dir__=-1,n.__filtered__=true}else n=this.clone(),n.__dir__*=-1;return n},Un.prototype.value=function(){var n,t=this.__wrapped__.value(),r=this.__dir__,e=ff(t),u=0>r,i=e?t.length:0;n=i;for(var o=this.__views__,f=0,c=-1,a=o.length;++c<a;){var l=o[c],s=l.size;switch(l.type){case"drop":f+=s;break;case"dropRight":n-=s;break;case"take":n=Ci(n,f+s);break;case"takeRight":f=Ui(f,n-s)}}if(n={start:f,end:n},o=n.start,f=n.end,n=f-o,o=u?f:o-1,f=this.__iteratees__,c=f.length,a=0,l=Ci(n,this.__takeCount__),!e||!u&&i==n&&l==n)return wr(t,this.__actions__);
+e=[];n:for(;n--&&a<l;){for(o+=r,u=-1,i=t[o];++u<c;){var h=f[u],s=h.type,h=(0,h.iteratee)(i);if(2==s)i=h;else if(!h){if(1==s)continue n;break n}}e[a++]=i}return e},An.prototype.at=To,An.prototype.chain=function(){return Ye(this)},An.prototype.commit=function(){return new On(this.value(),this.__chain__)},An.prototype.next=function(){this.__values__===T&&(this.__values__=mu(this.value()));var n=this.__index__>=this.__values__.length;return{done:n,value:n?T:this.__values__[this.__index__++]}},An.prototype.plant=function(n){
+for(var t,r=this;r instanceof En;){var e=Fe(r);e.__index__=0,e.__values__=T,t?u.__wrapped__=e:t=e;var u=e,r=r.__wrapped__}return u.__wrapped__=n,t},An.prototype.reverse=function(){var n=this.__wrapped__;return n instanceof Un?(this.__actions__.length&&(n=new Un(this)),n=n.reverse(),n.__actions__.push({func:Qe,args:[Ge],thisArg:T}),new On(n,this.__chain__)):this.thru(Ge)},An.prototype.toJSON=An.prototype.valueOf=An.prototype.value=function(){return wr(this.__wrapped__,this.__actions__)},An.prototype.first=An.prototype.head,
+wi&&(An.prototype[wi]=Xe),An}();typeof define=="function"&&typeof define.amd=="object"&&define.amd?($n._=rt, define(function(){return rt})):Nn?((Nn.exports=rt)._=rt,Fn._=rt):$n._=rt}).call(this);

matches.js

@@ -1,6 +1,9 @@
 var baseClone = require('./_baseClone'),
     baseMatches = require('./_baseMatches');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1;
+
 /**
  * Creates a function that performs a partial deep comparison between a given
  * object and `source`, returning `true` if the given object has equivalent
@@ -30,7 +33,7 @@ var baseClone = require('./_baseClone'),
  * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
  */
 function matches(source) {
-  return baseMatches(baseClone(source, true));
+  return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
 }
 
 module.exports = matches;

matchesProperty.js

@@ -1,6 +1,9 @@
 var baseClone = require('./_baseClone'),
     baseMatchesProperty = require('./_baseMatchesProperty');
 
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1;
+
 /**
  * Creates a function that performs a partial deep comparison between the
  * value at `path` of a given object to `srcValue`, returning `true` if the
@@ -28,7 +31,7 @@ var baseClone = require('./_baseClone'),
  * // => { 'a': 4, 'b': 5, 'c': 6 }
  */
 function matchesProperty(path, srcValue) {
-  return baseMatchesProperty(path, baseClone(srcValue, true));
+  return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
 }
 
 module.exports = matchesProperty;

omit.js

@@ -1,21 +1,29 @@
 var arrayMap = require('./_arrayMap'),
-    baseDifference = require('./_baseDifference'),
-    basePick = require('./_basePick'),
+    baseClone = require('./_baseClone'),
+    baseUnset = require('./_baseUnset'),
+    castPath = require('./_castPath'),
+    copyObject = require('./_copyObject'),
+    customOmitClone = require('./_customOmitClone'),
     flatRest = require('./_flatRest'),
-    getAllKeysIn = require('./_getAllKeysIn'),
-    toKey = require('./_toKey');
+    getAllKeysIn = require('./_getAllKeysIn');
+
+/** Used to compose bitmasks for cloning. */
+var CLONE_DEEP_FLAG = 1,
+    CLONE_FLAT_FLAG = 2,
+    CLONE_SYMBOLS_FLAG = 4;
 
 /**
  * The opposite of `_.pick`; this method creates an object composed of the
- * own and inherited enumerable string keyed properties of `object` that are
- * not omitted.
+ * own and inherited enumerable property paths of `object` that are not omitted.
+ *
+ * **Note:** This method is considerably slower than `_.pick`.
  *
  * @static
  * @since 0.1.0
  * @memberOf _
  * @category Object
  * @param {Object} object The source object.
- * @param {...(string|string[])} [props] The property identifiers to omit.
+ * @param {...(string|string[])} [paths] The property paths to omit.
  * @returns {Object} Returns the new object.
  * @example
  *
@@ -24,12 +32,26 @@ var arrayMap = require('./_arrayMap'),
  * _.omit(object, ['a', 'c']);
  * // => { 'b': '2' }
  */
-var omit = flatRest(function(object, props) {
+var omit = flatRest(function(object, paths) {
+  var result = {};
   if (object == null) {
-    return {};
+    return result;
   }
-  props = arrayMap(props, toKey);
-  return basePick(object, baseDifference(getAllKeysIn(object), props));
+  var isDeep = false;
+  paths = arrayMap(paths, function(path) {
+    path = castPath(path, object);
+    isDeep || (isDeep = path.length > 1);
+    return path;
+  });
+  copyObject(object, getAllKeysIn(object), result);
+  if (isDeep) {
+    result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
+  }
+  var length = paths.length;
+  while (length--) {
+    baseUnset(result, paths[length]);
+  }
+  return result;
 });
 
 module.exports = omit;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lodash",
-  "version": "4.16.5",
+  "version": "4.17.15",
   "description": "Lodash modular utilities.",
   "keywords": "modules, stdlib, util",
   "homepage": "https://lodash.com/",
@@ -8,11 +8,10 @@
   "icon": "https://lodash.com/icon.svg",
   "license": "MIT",
   "main": "lodash.js",
-  "author": "John-David Dalton <john.david.dalton@gmail.com> (http://allyoucanleet.com/)",
+  "author": "John-David Dalton <john.david.dalton@gmail.com>",
   "contributors": [
-    "John-David Dalton <john.david.dalton@gmail.com> (http://allyoucanleet.com/)",
-    "Blaine Bublitz <blaine.bublitz@gmail.com> (https://github.com/phated)",
-    "Mathias Bynens <mathias@qiwi.be> (https://mathiasbynens.be/)"
+    "John-David Dalton <john.david.dalton@gmail.com>",
+    "Mathias Bynens <mathias@qiwi.be>"
   ],
-  "scripts": { "test": "echo \"See https://travis-ci.org/lodash/lodash-cli for testing details.\"" }
+  "scripts": { "test": "echo \"See https://travis-ci.org/lodash-archive/lodash-cli for testing details.\"" }
 }

partial.js

@@ -4,7 +4,7 @@ var baseRest = require('./_baseRest'),
     replaceHolders = require('./_replaceHolders');
 
 /** Used to compose bitmasks for function metadata. */
-var PARTIAL_FLAG = 32;
+var WRAP_PARTIAL_FLAG = 32;
 
 /**
  * Creates a function that invokes `func` with `partials` prepended to the
@@ -41,7 +41,7 @@ var PARTIAL_FLAG = 32;
  */
 var partial = baseRest(function(func, partials) {
   var holders = replaceHolders(partials, getHolder(partial));
-  return createWrap(func, PARTIAL_FLAG, undefined, partials, holders);
+  return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
 });
 
 // Assign default placeholders.

partialRight.js

@@ -4,7 +4,7 @@ var baseRest = require('./_baseRest'),
     replaceHolders = require('./_replaceHolders');
 
 /** Used to compose bitmasks for function metadata. */
-var PARTIAL_RIGHT_FLAG = 64;
+var WRAP_PARTIAL_RIGHT_FLAG = 64;
 
 /**
  * This method is like `_.partial` except that partially applied arguments
@@ -40,7 +40,7 @@ var PARTIAL_RIGHT_FLAG = 64;
  */
 var partialRight = baseRest(function(func, partials) {
   var holders = replaceHolders(partials, getHolder(partialRight));
-  return createWrap(func, PARTIAL_RIGHT_FLAG, undefined, partials, holders);
+  return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
 });
 
 // Assign default placeholders.

pick.js

@@ -1,7 +1,5 @@
-var arrayMap = require('./_arrayMap'),
-    basePick = require('./_basePick'),
-    flatRest = require('./_flatRest'),
-    toKey = require('./_toKey');
+var basePick = require('./_basePick'),
+    flatRest = require('./_flatRest');
 
 /**
  * Creates an object composed of the picked `object` properties.
@@ -11,7 +9,7 @@ var arrayMap = require('./_arrayMap'),
  * @memberOf _
  * @category Object
  * @param {Object} object The source object.
- * @param {...(string|string[])} [props] The property identifiers to pick.
+ * @param {...(string|string[])} [paths] The property paths to pick.
  * @returns {Object} Returns the new object.
  * @example
  *
@@ -20,8 +18,8 @@ var arrayMap = require('./_arrayMap'),
  * _.pick(object, ['a', 'c']);
  * // => { 'a': 1, 'c': 3 }
  */
-var pick = flatRest(function(object, props) {
-  return object == null ? {} : basePick(object, arrayMap(props, toKey));
+var pick = flatRest(function(object, paths) {
+  return object == null ? {} : basePick(object, paths);
 });
 
 module.exports = pick;

pickBy.js

@@ -1,4 +1,5 @@
-var baseIteratee = require('./_baseIteratee'),
+var arrayMap = require('./_arrayMap'),
+    baseIteratee = require('./_baseIteratee'),
     basePickBy = require('./_basePickBy'),
     getAllKeysIn = require('./_getAllKeysIn');
 
@@ -21,7 +22,16 @@ var baseIteratee = require('./_baseIteratee'),
  * // => { 'a': 1, 'c': 3 }
  */
 function pickBy(object, predicate) {
-  return object == null ? {} : basePickBy(object, getAllKeysIn(object), baseIteratee(predicate));
+  if (object == null) {
+    return {};
+  }
+  var props = arrayMap(getAllKeysIn(object), function(prop) {
+    return [prop];
+  });
+  predicate = baseIteratee(predicate);
+  return basePickBy(object, props, function(value, path) {
+    return predicate(value, path[0]);
+  });
 }
 
 module.exports = pickBy;

rearg.js

@@ -2,7 +2,7 @@ var createWrap = require('./_createWrap'),
     flatRest = require('./_flatRest');
 
 /** Used to compose bitmasks for function metadata. */
-var REARG_FLAG = 256;
+var WRAP_REARG_FLAG = 256;
 
 /**
  * Creates a function that invokes `func` with arguments arranged according
@@ -27,7 +27,7 @@ var REARG_FLAG = 256;
  * // => ['a', 'b', 'c']
  */
 var rearg = flatRest(function(func, indexes) {
-  return createWrap(func, REARG_FLAG, undefined, undefined, undefined, indexes);
+  return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
 });
 
 module.exports = rearg;

result.js

@@ -1,6 +1,5 @@
 var castPath = require('./_castPath'),
     isFunction = require('./isFunction'),
-    isKey = require('./_isKey'),
     toKey = require('./_toKey');
 
 /**
@@ -33,15 +32,15 @@ var castPath = require('./_castPath'),
  * // => 'default'
  */
 function result(object, path, defaultValue) {
-  path = isKey(path, object) ? [path] : castPath(path);
+  path = castPath(path, object);
 
   var index = -1,
       length = path.length;
 
   // Ensure the loop is entered when path is empty.
   if (!length) {
-    object = undefined;
     length = 1;
+    object = undefined;
   }
   while (++index < length) {
     var value = object == null ? undefined : object[toKey(path[index])];

spread.js

@@ -48,7 +48,7 @@ function spread(func, start) {
   if (typeof func != 'function') {
     throw new TypeError(FUNC_ERROR_TEXT);
   }
-  start = start === undefined ? 0 : nativeMax(toInteger(start), 0);
+  start = start == null ? 0 : nativeMax(toInteger(start), 0);
   return baseRest(function(args) {
     var array = args[start],
         otherArgs = castSlice(args, 0, start);