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 v4.17.2
+# 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/4.17.2-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;

_baseClone.js

@@ -15,7 +15,9 @@ var Stack = require('./_Stack'),
     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. */
@@ -123,7 +125,7 @@ function baseClone(value, bitmask, customizer, key, object, stack) {
       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.
@@ -134,6 +136,16 @@ function baseClone(value, bitmask, customizer, key, object, stack) {
   }
   stack.set(value, result);
 
+  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);

_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);
 }

_baseIsEqual.js

@@ -1,5 +1,4 @@
 var baseIsEqualDeep = require('./_baseIsEqualDeep'),
-    isObject = require('./isObject'),
     isObjectLike = require('./isObjectLike');
 
 /**
@@ -20,7 +19,7 @@ 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, bitmask, customizer, baseIsEqual, stack);

_baseIsEqualDeep.js

@@ -38,17 +38,12 @@ var hasOwnProperty = objectProto.hasOwnProperty;
 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;

_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

@@ -11,7 +11,6 @@ var basePickBy = require('./_basePickBy'),
  * @returns {Object} Returns the new object.
  */
 function basePick(object, paths) {
-  object = Object(object);
   return basePickBy(object, paths, function(value, path) {
     return hasIn(object, path);
   });

_cloneMap.js

@@ -1,22 +0,0 @@
-var addMapEntry = require('./_addMapEntry'),
-    arrayReduce = require('./_arrayReduce'),
-    mapToArray = require('./_mapToArray');
-
-/** Used to compose bitmasks for cloning. */
-var CLONE_DEEP_FLAG = 1;
-
-/**
- * Creates a clone of `map`.
- *
- * @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), CLONE_DEEP_FLAG) : mapToArray(map);
-  return arrayReduce(array, addMapEntry, new map.constructor);
-}
-
-module.exports = cloneMap;

_cloneSet.js

@@ -1,22 +0,0 @@
-var addSetEntry = require('./_addSetEntry'),
-    arrayReduce = require('./_arrayReduce'),
-    setToArray = require('./_setToArray');
-
-/** Used to compose bitmasks for cloning. */
-var CLONE_DEEP_FLAG = 1;
-
-/**
- * Creates a clone of `set`.
- *
- * @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), CLONE_DEEP_FLAG) : setToArray(set);
-  return arrayReduce(array, addSetEntry, new set.constructor);
-}
-
-module.exports = cloneSet;

_createFlow.js

@@ -5,9 +5,6 @@ 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';
 
@@ -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,

_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

@@ -83,7 +83,7 @@ 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);
 

_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;

_equalObjects.js

@@ -1,4 +1,4 @@
-var keys = require('./keys');
+var getAllKeys = require('./_getAllKeys');
 
 /** Used to compose bitmasks for value comparisons. */
 var COMPARE_PARTIAL_FLAG = 1;
@@ -24,9 +24,9 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  */
 function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
   var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
-      objProps = keys(object),
+      objProps = getAllKeys(object),
       objLength = objProps.length,
-      othProps = keys(other),
+      othProps = getAllKeys(other),
       othLength = othProps.length;
 
   if (objLength != othLength && !isPartial) {

_getSymbols.js

@@ -1,6 +1,12 @@
-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;
 
@@ -11,6 +17,14 @@ var nativeGetSymbols = Object.getOwnPropertySymbols;
  * @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;

_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 = [];

_nodeUtil.js

@@ -15,6 +15,14 @@ var freeProcess = moduleExports && freeGlobal.process;
 /** Used to access faster Node.js helpers. */
 var nodeUtil = (function() {
   try {
+    // 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) {}
 }());

_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

@@ -1,8 +1,7 @@
 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;
@@ -16,11 +15,11 @@ var reEscapeChar = /\\(\\)?/g;
  */
 var stringToPath = memoizeCapped(function(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;
 });

_unicodeWords.js

@@ -38,8 +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;
 

core.js

@@ -2,7 +2,7 @@
  * @license
  * 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
@@ -13,7 +13,7 @@
   var undefined;
 
   /** Used as the semantic version number. */
-  var VERSION = '4.17.2';
+  var VERSION = '4.17.15';
 
   /** Error message constants. */
   var FUNC_ERROR_TEXT = 'Expected a function';
@@ -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)
@@ -673,7 +658,7 @@
     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, bitmask, customizer, baseIsEqual, stack);
@@ -696,17 +681,12 @@
   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;
@@ -1369,6 +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)
@@ -2598,7 +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 _
@@ -3101,39 +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
@@ -3194,9 +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;
   });
 
   /**

core.min.js

@@ -3,27 +3,27 @@
  * 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){
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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);
       }

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);
 });
 

fp/_baseConvert.js

@@ -65,23 +65,24 @@ function createCloner(func) {
 }
 
 /**
- * This function is like `_.spread` except that it includes arguments after those spread.
+ * 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 spread(func, start) {
+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],
-        lastIndex = args.length - 1,
         otherArgs = args.slice(0, start);
 
     if (array) {
@@ -135,8 +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) {
@@ -157,10 +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 : {
@@ -170,7 +170,9 @@ 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,
@@ -184,7 +186,9 @@ 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,
       toInteger = helpers.toInteger,
@@ -313,7 +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;
   }
@@ -354,8 +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];
     }
@@ -460,7 +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,
@@ -483,8 +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)
@@ -505,17 +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;
 
@@ -525,7 +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, _)]);
       }
     });
   });
@@ -551,9 +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

@@ -167,7 +167,8 @@ 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. */
@@ -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

@@ -5,7 +5,9 @@ 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'),

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 {

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 _

lodash.js

@@ -1,7 +1,7 @@
 /**
  * @license
  * Lodash <https://lodash.com/>
- * 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
@@ -12,7 +12,7 @@
   var undefined;
 
   /** Used as the semantic version number. */
-  var VERSION = '4.17.2';
+  var VERSION = '4.17.15';
 
   /** Used as the size to enable large array optimizations. */
   var LARGE_ARRAY_SIZE = 200;
@@ -143,7 +143,6 @@
   /** Used to match property names within property paths. */
   var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
       reIsPlainProp = /^\w*$/,
-      reLeadingDot = /^\./,
       rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
 
   /**
@@ -243,8 +242,8 @@
       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,
       rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
@@ -277,7 +276,7 @@
   var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');
 
   /** 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 ]/;
 
   /** Used to assign default `context` object properties. */
   var contextProps = [
@@ -437,6 +436,14 @@
   /** Used to access faster Node.js helpers. */
   var nodeUtil = (function() {
     try {
+      // 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) {}
   }());
@@ -451,34 +458,6 @@
 
   /*--------------------------------------------------------------------------*/
 
-  /**
-   * 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;
-  }
-
-  /**
-   * 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;
-  }
-
   /**
    * A faster alternative to `Function#apply`, this function invokes `func`
    * with the `this` binding of `thisArg` and the arguments of `args`.
@@ -1567,9 +1546,9 @@
      * 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.
@@ -1728,8 +1707,8 @@
 
     /**
      * By default, the template delimiters used by lodash are like those in
-     * embedded Ruby (ERB). Change the following template settings to use
-     * alternative delimiters.
+     * embedded Ruby (ERB) as well as ES2015 template strings. Change the
+     * following template settings to use alternative delimiters.
      *
      * @static
      * @memberOf _
@@ -1876,8 +1855,7 @@
           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 = [];
@@ -1991,7 +1969,7 @@
      */
     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);
     }
 
     /**
@@ -2464,24 +2442,6 @@
       return shuffleSelf(copyArray(array));
     }
 
-    /**
-     * 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;
-    }
-
     /**
      * This function is like `assignValue` except that it doesn't assign
      * `undefined` values.
@@ -2696,7 +2656,7 @@
           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.
@@ -2707,6 +2667,16 @@
       }
       stack.set(value, result);
 
+      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);
@@ -3094,8 +3064,7 @@
       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);
     }
@@ -3299,7 +3268,7 @@
       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, bitmask, customizer, baseIsEqual, stack);
@@ -3322,17 +3291,12 @@
     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;
@@ -3634,13 +3598,13 @@
         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) {
@@ -3667,8 +3631,8 @@
      *  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) {
@@ -3711,7 +3675,7 @@
           if (isArguments(objValue)) {
             newValue = toPlainObject(objValue);
           }
-          else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) {
+          else if (!isObject(objValue) || isFunction(objValue)) {
             newValue = initCloneObject(srcValue);
           }
         }
@@ -3780,7 +3744,6 @@
      * @returns {Object} Returns the new object.
      */
     function basePick(object, paths) {
-      object = Object(object);
       return basePickBy(object, paths, function(value, path) {
         return hasIn(object, path);
       });
@@ -4577,20 +4540,6 @@
       return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
     }
 
-    /**
-     * 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), CLONE_DEEP_FLAG) : mapToArray(map);
-      return arrayReduce(array, addMapEntry, new map.constructor);
-    }
-
     /**
      * Creates a clone of `regexp`.
      *
@@ -4604,20 +4553,6 @@
       return result;
     }
 
-    /**
-     * 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), CLONE_DEEP_FLAG) : setToArray(set);
-      return arrayReduce(array, addSetEntry, new set.constructor);
-    }
-
     /**
      * Creates a clone of the `symbol` object.
      *
@@ -5173,8 +5108,7 @@
           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,
@@ -5481,8 +5415,8 @@
       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'),
@@ -5586,7 +5520,7 @@
       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);
 
@@ -5606,6 +5540,63 @@
       return setWrapToString(setter(result, newData), func, bitmask);
     }
 
+    /**
+     * 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.
+     * @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 customDefaultsAssignIn(objValue, srcValue, key, object) {
+      if (objValue === undefined ||
+          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
+        return srcValue;
+      }
+      return objValue;
+    }
+
+    /**
+     * 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.
+     * @param {*} srcValue The source value.
+     * @param {string} key The key of the property to merge.
+     * @param {Object} object The parent object of `objValue`.
+     * @param {Object} source The parent object of `srcValue`.
+     * @param {Object} [stack] Tracks traversed source values and their merged
+     *  counterparts.
+     * @returns {*} Returns the value to assign.
+     */
+    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, customDefaultsMerge, stack);
+        stack['delete'](srcValue);
+      }
+      return objValue;
+    }
+
+    /**
+     * 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;
+    }
+
     /**
      * A specialized version of `baseIsEqualDeep` for arrays with support for
      * partial deep comparisons.
@@ -5777,9 +5768,9 @@
      */
     function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
       var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
-          objProps = keys(object),
+          objProps = getAllKeys(object),
           objLength = objProps.length,
-          othProps = keys(other),
+          othProps = getAllKeys(other),
           othLength = othProps.length;
 
       if (objLength != othLength && !isPartial) {
@@ -6017,7 +6008,15 @@
      * @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);
+      });
+    };
 
     /**
      * Creates an array of the own and inherited enumerable symbols of `object`.
@@ -6148,7 +6147,7 @@
      */
     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')) {
@@ -6175,16 +6174,15 @@
      * 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:
@@ -6203,7 +6201,7 @@
           return cloneTypedArray(object, isDeep);
 
         case mapTag:
-          return cloneMap(object, isDeep, cloneFunc);
+          return new Ctor;
 
         case numberTag:
         case stringTag:
@@ -6213,7 +6211,7 @@
           return cloneRegExp(object);
 
         case setTag:
-          return cloneSet(object, isDeep, cloneFunc);
+          return new Ctor;
 
         case symbolTag:
           return cloneSymbol(object);
@@ -6260,10 +6258,13 @@
      * @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);
     }
 
     /**
@@ -6503,29 +6504,6 @@
       return data;
     }
 
-    /**
-     * Used by `_.defaultsDeep` to customize its `_.merge` use.
-     *
-     * @private
-     * @param {*} objValue The destination value.
-     * @param {*} srcValue The source value.
-     * @param {string} key The key of the property to merge.
-     * @param {Object} object The parent object of `objValue`.
-     * @param {Object} source The parent object of `srcValue`.
-     * @param {Object} [stack] Tracks traversed source values and their merged
-     *  counterparts.
-     * @returns {*} Returns the value to assign.
-     */
-    function mergeDefaults(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);
-        stack['delete'](srcValue);
-      }
-      return objValue;
-    }
-
     /**
      * This function is like
      * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
@@ -6620,6 +6598,26 @@
       return array;
     }
 
+    /**
+     * 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];
+    }
+
     /**
      * Sets metadata for `func`.
      *
@@ -6736,11 +6734,11 @@
      */
     var stringToPath = memoizeCapped(function(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;
     });
@@ -8268,7 +8266,7 @@
      *
      * var users = [
      *   { 'user': 'barney',  'active': false },
-     *   { 'user': 'fred',    'active': false},
+     *   { 'user': 'fred',    'active': false },
      *   { 'user': 'pebbles', 'active': true }
      * ];
      *
@@ -10348,9 +10346,11 @@
       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) {
@@ -10411,6 +10411,7 @@
           }
           if (maxing) {
             // Handle invocations in a tight loop.
+            clearTimeout(timerId);
             timerId = setTimeout(timerExpired, wait);
             return invokeFunc(lastCallTime);
           }
@@ -10837,7 +10838,7 @@
       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);
@@ -11507,7 +11508,7 @@
      * 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 _
@@ -12527,7 +12528,9 @@
      * // => 3
      */
     function toSafeInteger(value) {
-      return baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER);
+      return value
+        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
+        : (value === 0 ? value : 0);
     }
 
     /**
@@ -12780,9 +12783,35 @@
      * _.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;
     });
 
     /**
@@ -12805,7 +12834,7 @@
      * // => { 'a': { 'b': 2, 'c': 3 } }
      */
     var defaultsDeep = baseRest(function(args) {
-      args.push(undefined, mergeDefaults);
+      args.push(undefined, customDefaultsMerge);
       return apply(mergeWith, undefined, args);
     });
 
@@ -13179,6 +13208,11 @@
      * // => { '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));
 
@@ -13209,6 +13243,11 @@
      * // => { '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 {
@@ -13467,7 +13506,7 @@
       });
       copyObject(object, getAllKeysIn(object), result);
       if (isDeep) {
-        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG);
+        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
       }
       var length = paths.length;
       while (length--) {
@@ -14616,7 +14655,10 @@
      */
     function startsWith(string, target, position) {
       string = toString(string);
-      position = baseClamp(toInteger(position), 0, string.length);
+      position = position == null
+        ? 0
+        : baseClamp(toInteger(position), 0, string.length);
+
       target = baseToString(target);
       return string.slice(position, position + target.length) == target;
     }
@@ -14735,9 +14777,9 @@
         options = undefined;
       }
       string = toString(string);
-      options = assignInWith({}, options, settings, assignInDefaults);
+      options = assignInWith({}, options, settings, customDefaultsAssignIn);
 
-      var imports = assignInWith({}, options.imports, settings.imports, assignInDefaults),
+      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
           importsKeys = keys(imports),
           importsValues = baseValues(imports, importsKeys);
 
@@ -14756,9 +14798,12 @@
       , 'g');
 
       // Use a sourceURL for easier debugging.
+      // The sourceURL gets injected into the source that's eval-ed, so be careful
+      // with lookup (in case of e.g. prototype pollution), and strip newlines if any.
+      // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection.
       var sourceURL = '//# sourceURL=' +
-        ('sourceURL' in options
-          ? options.sourceURL
+        (hasOwnProperty.call(options, 'sourceURL')
+          ? (options.sourceURL + '').replace(/[\r\n]/g, ' ')
           : ('lodash.templateSources[' + (++templateCounter) + ']')
         ) + '\n';
 
@@ -14791,7 +14836,9 @@
 
       // If `variable` is not specified wrap a with-statement around the generated
       // code to add the data object to the top of the scope chain.
-      var variable = options.variable;
+      // Like with sourceURL, we take care to not check the option's prototype,
+      // as this configuration is a code injection vector.
+      var variable = hasOwnProperty.call(options, 'variable') && options.variable;
       if (!variable) {
         source = 'with (obj) {\n' + source + '\n}\n';
       }
@@ -16821,14 +16868,13 @@
     // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
     arrayEach(['drop', 'take'], function(methodName, index) {
       LazyWrapper.prototype[methodName] = function(n) {
-        var filtered = this.__filtered__;
-        if (filtered && !index) {
-          return new LazyWrapper(this);
-        }
         n = n === undefined ? 1 : nativeMax(toInteger(n), 0);
 
-        var result = this.clone();
-        if (filtered) {
+        var result = (this.__filtered__ && !index)
+          ? new LazyWrapper(this)
+          : this.clone();
+
+        if (result.__filtered__) {
           result.__takeCount__ = nativeMin(n, result.__takeCount__);
         } else {
           result.__views__.push({
@@ -16997,10 +17043,11 @@
     baseForOwn(LazyWrapper.prototype, function(func, methodName) {
       var lodashFunc = lodash[methodName];
       if (lodashFunc) {
-        var key = (lodashFunc.name + ''),
-            names = realNames[key] || (realNames[key] = []);
-
-        names.push({ 'name': methodName, 'func': lodashFunc });
+        var key = lodashFunc.name + '';
+        if (!hasOwnProperty.call(realNames, key)) {
+          realNames[key] = [];
+        }
+        realNames[key].push({ 'name': methodName, 'func': lodashFunc });
       }
     });
 

lodash.min.js

@@ -2,135 +2,136 @@
  * @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););
-return n}function o(n,t){for(var r=-1,e=null==n?0:n.length;++r<e;)if(!t(n[r],r,n))return false;return true}function f(n,t){for(var r=-1,e=null==n?0:n.length,u=0,i=[];++r<e;){var o=n[r];t(o,r,n)&&(i[u++]=o)}return i}function c(n,t){return!(null==n||!n.length)&&-1<d(n,t,0)}function a(n,t,r){for(var e=-1,u=null==n?0:n.length;++e<u;)if(r(t,n[e]))return true;return false}function l(n,t){for(var r=-1,e=null==n?0:n.length,u=Array(e);++r<e;)u[r]=t(n[r],r,n);return u}function s(n,t){for(var r=-1,e=t.length,u=n.length;++r<e;)n[u+r]=t[r];
-return n}function h(n,t,r,e){var u=-1,i=null==n?0:n.length;for(e&&i&&(r=n[++u]);++u<i;)r=t(r,n[u],u,n);return r}function p(n,t,r,e){var u=null==n?0:n.length;for(e&&u&&(r=n[--u]);u--;)r=t(r,n[u],u,n);return r}function _(n,t){for(var r=-1,e=null==n?0:n.length;++r<e;)if(t(n[r],r,n))return true;return false}function v(n,t,r){var e;return r(n,function(n,r,u){if(t(n,r,u))return e=r,false}),e}function g(n,t,r,e){var u=n.length;for(r+=e?1:-1;e?r--:++r<u;)if(t(n[r],r,n))return r;return-1}function d(n,t,r){if(t===t)n:{
---r;for(var e=n.length;++r<e;)if(n[r]===t){n=r;break n}n=-1}else n=g(n,b,r);return n}function y(n,t,r,e){--r;for(var u=n.length;++r<u;)if(e(n[r],t))return r;return-1}function b(n){return n!==n}function x(n,t){var r=null==n?0:n.length;return r?k(n,t)/r:P}function j(n){return function(t){return null==t?F:t[n]}}function w(n){return function(t){return null==n?F:n[t]}}function m(n,t,r,e,u){return u(n,function(n,u,i){r=e?(e=false,n):t(r,n,u,i)}),r}function A(n,t){var r=n.length;for(n.sort(t);r--;)n[r]=n[r].c;
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+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($u)},Un.prototype.find=function(n){
+return this.filter(n).head()},Un.prototype.findLast=function(n){return this.reverse().find(n)},Un.prototype.invokeMap=fr(function(n,t){return typeof n=="function"?new Un(this):this.map(function(r){return Lt(r,n,t)})}),Un.prototype.reject=function(n){return this.filter(au(ye(n)))},Un.prototype.slice=function(n,t){n=Eu(n);var r=this;return r.__filtered__&&(0<n||0>t)?new Un(r):(0>n?r=r.takeRight(-n):n&&(r=r.drop(n)),t!==T&&(t=Eu(t),r=0>t?r.dropRight(-t):r.take(t-n)),r)},Un.prototype.takeRightWhile=function(n){
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+return!i&&s?(o=c?o:new Un(this),o=n.apply(o,f),o.__actions__.push({func:Qe,args:[t],thisArg:T}),new On(o,h)):l&&c?n.apply(this,f):(o=this.thru(t),l?e?o.value()[0]:o.value():o)})}),r("pop push shift sort splice unshift".split(" "),function(n){var t=ri[n],r=/^(?:push|sort|unshift)$/.test(n)?"tap":"thru",e=/^(?:pop|shift)$/.test(n);An.prototype[n]=function(){var n=arguments;if(e&&!this.__chain__){var u=this.value();return t.apply(ff(u)?u:[],n)}return this[r](function(r){return t.apply(ff(r)?r:[],n)});
+}}),mt(Un.prototype,function(n,t){var r=An[t];if(r){var e=r.name+"";oi.call(Gi,e)||(Gi[e]=[]),Gi[e].push({name:t,func:r})}}),Gi[Jr(T,2).name]=[{name:"wrapper",func:T}],Un.prototype.clone=function(){var n=new Un(this.__wrapped__);return n.__actions__=Ur(this.__actions__),n.__dir__=this.__dir__,n.__filtered__=this.__filtered__,n.__iteratees__=Ur(this.__iteratees__),n.__takeCount__=this.__takeCount__,n.__views__=Ur(this.__views__),n},Un.prototype.reverse=function(){if(this.__filtered__){var n=new Un(this);
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+e=[];n:for(;n--&&a<l;){for(o+=r,u=-1,i=t[o];++u<c;){var h=f[u],s=h.type,h=(0,h.iteratee)(i);if(2==s)i=h;else if(!h){if(1==s)continue n;break n}}e[a++]=i}return e},An.prototype.at=To,An.prototype.chain=function(){return Ye(this)},An.prototype.commit=function(){return new On(this.value(),this.__chain__)},An.prototype.next=function(){this.__values__===T&&(this.__values__=mu(this.value()));var n=this.__index__>=this.__values__.length;return{done:n,value:n?T:this.__values__[this.__index__++]}},An.prototype.plant=function(n){
+for(var t,r=this;r instanceof En;){var e=Fe(r);e.__index__=0,e.__values__=T,t?u.__wrapped__=e:t=e;var u=e,r=r.__wrapped__}return u.__wrapped__=n,t},An.prototype.reverse=function(){var n=this.__wrapped__;return n instanceof Un?(this.__actions__.length&&(n=new Un(this)),n=n.reverse(),n.__actions__.push({func:Qe,args:[Ge],thisArg:T}),new On(n,this.__chain__)):this.thru(Ge)},An.prototype.toJSON=An.prototype.valueOf=An.prototype.value=function(){return wr(this.__wrapped__,this.__actions__)},An.prototype.first=An.prototype.head,
+wi&&(An.prototype[wi]=Xe),An}();typeof define=="function"&&typeof define.amd=="object"&&define.amd?($n._=rt, define(function(){return rt})):Nn?((Nn.exports=rt)._=rt,Fn._=rt):$n._=rt}).call(this);

omit.js

@@ -3,6 +3,7 @@ var arrayMap = require('./_arrayMap'),
     baseUnset = require('./_baseUnset'),
     castPath = require('./_castPath'),
     copyObject = require('./_copyObject'),
+    customOmitClone = require('./_customOmitClone'),
     flatRest = require('./_flatRest'),
     getAllKeysIn = require('./_getAllKeysIn');
 
@@ -44,7 +45,7 @@ var omit = flatRest(function(object, paths) {
   });
   copyObject(object, getAllKeysIn(object), result);
   if (isDeep) {
-    result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG);
+    result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
   }
   var length = paths.length;
   while (length--) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lodash",
-  "version": "4.17.2",
+  "version": "4.17.15",
   "description": "Lodash modular utilities.",
   "keywords": "modules, stdlib, util",
   "homepage": "https://lodash.com/",
@@ -8,10 +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/)",
-    "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.\"" }
 }

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);

startsWith.js

@@ -28,7 +28,10 @@ var baseClamp = require('./_baseClamp'),
  */
 function startsWith(string, target, position) {
   string = toString(string);
-  position = baseClamp(toInteger(position), 0, string.length);
+  position = position == null
+    ? 0
+    : baseClamp(toInteger(position), 0, string.length);
+
   target = baseToString(target);
   return string.slice(position, position + target.length) == target;
 }

takeWhile.js

@@ -17,7 +17,7 @@ var baseIteratee = require('./_baseIteratee'),
  *
  * var users = [
  *   { 'user': 'barney',  'active': false },
- *   { 'user': 'fred',    'active': false},
+ *   { 'user': 'fred',    'active': false },
  *   { 'user': 'pebbles', 'active': true }
  * ];
  *

template.js

@@ -1,7 +1,7 @@
-var assignInDefaults = require('./_assignInDefaults'),
-    assignInWith = require('./assignInWith'),
+var assignInWith = require('./assignInWith'),
     attempt = require('./attempt'),
     baseValues = require('./_baseValues'),
+    customDefaultsAssignIn = require('./_customDefaultsAssignIn'),
     escapeStringChar = require('./_escapeStringChar'),
     isError = require('./isError'),
     isIterateeCall = require('./_isIterateeCall'),
@@ -27,6 +27,12 @@ var reNoMatch = /($^)/;
 /** Used to match unescaped characters in compiled string literals. */
 var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
 
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
 /**
  * Creates a compiled template function that can interpolate data properties
  * in "interpolate" delimiters, HTML-escape interpolated data properties in
@@ -141,9 +147,9 @@ function template(string, options, guard) {
     options = undefined;
   }
   string = toString(string);
-  options = assignInWith({}, options, settings, assignInDefaults);
+  options = assignInWith({}, options, settings, customDefaultsAssignIn);
 
-  var imports = assignInWith({}, options.imports, settings.imports, assignInDefaults),
+  var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
       importsKeys = keys(imports),
       importsValues = baseValues(imports, importsKeys);
 
@@ -162,7 +168,14 @@ function template(string, options, guard) {
   , 'g');
 
   // Use a sourceURL for easier debugging.
-  var sourceURL = 'sourceURL' in options ? '//# sourceURL=' + options.sourceURL + '\n' : '';
+  // The sourceURL gets injected into the source that's eval-ed, so be careful
+  // with lookup (in case of e.g. prototype pollution), and strip newlines if any.
+  // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection.
+  var sourceURL = hasOwnProperty.call(options, 'sourceURL')
+    ? ('//# sourceURL=' +
+       (options.sourceURL + '').replace(/[\r\n]/g, ' ') +
+       '\n')
+    : '';
 
   string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
     interpolateValue || (interpolateValue = esTemplateValue);
@@ -193,7 +206,9 @@ function template(string, options, guard) {
 
   // If `variable` is not specified wrap a with-statement around the generated
   // code to add the data object to the top of the scope chain.
-  var variable = options.variable;
+  // Like with sourceURL, we take care to not check the option's prototype,
+  // as this configuration is a code injection vector.
+  var variable = hasOwnProperty.call(options, 'variable') && options.variable;
   if (!variable) {
     source = 'with (obj) {\n' + source + '\n}\n';
   }

templateSettings.js

@@ -5,8 +5,8 @@ var escape = require('./escape'),
 
 /**
  * By default, the template delimiters used by lodash are like those in
- * embedded Ruby (ERB). Change the following template settings to use
- * alternative delimiters.
+ * embedded Ruby (ERB) as well as ES2015 template strings. Change the
+ * following template settings to use alternative delimiters.
  *
  * @static
  * @memberOf _

toSafeInteger.js

@@ -29,7 +29,9 @@ var MAX_SAFE_INTEGER = 9007199254740991;
  * // => 3
  */
 function toSafeInteger(value) {
-  return baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER);
+  return value
+    ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
+    : (value === 0 ? value : 0);
 }
 
 module.exports = toSafeInteger;

wrapperLodash.js

@@ -29,9 +29,9 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  * Shortcut fusion is an optimization to merge iteratee calls; this avoids
  * the creation of intermediate arrays and can greatly reduce the number of
  * iteratee executions. Sections of a chain sequence qualify for shortcut
- * fusion if the section is applied to an array of at least `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.