Bump to v4.6.2.

lodash._baseiteratee/README.md

@@ -1,4 +1,4 @@
-# lodash._baseiteratee v4.6.1
+# lodash._baseiteratee v4.6.2
 
 The internal [lodash](https://lodash.com/) function `baseIteratee` exported as a [Node.js](https://nodejs.org/) module.
 
@@ -15,4 +15,4 @@ In Node.js:
 var baseIteratee = require('lodash._baseiteratee');
 ```
 
-See the [package source](https://github.com/lodash/lodash/blob/4.6.1-npm-packages/lodash._baseiteratee) for more details.
+See the [package source](https://github.com/lodash/lodash/blob/4.6.2-npm-packages/lodash._baseiteratee) for more details.

lodash._baseiteratee/index.js

@@ -1,5 +1,5 @@
 /**
- * lodash 4.6.1 (Custom Build) <https://lodash.com/>
+ * lodash (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="npm" -o ./`
  * Copyright jQuery Foundation and other contributors <https://jquery.org/>
  * Released under MIT license <https://lodash.com/license>
@@ -19,7 +19,8 @@ var UNORDERED_COMPARE_FLAG = 1,
     PARTIAL_COMPARE_FLAG = 2;
 
 /** Used as references for various `Number` constants. */
-var MAX_SAFE_INTEGER = 9007199254740991;
+var INFINITY = 1 / 0,
+    MAX_SAFE_INTEGER = 9007199254740991;
 
 /** `Object#toString` result references. */
 var argsTag = '[object Arguments]',
@@ -189,7 +190,7 @@ function baseTimes(n, iteratee) {
  * @private
  * @param {Object} object The object to query.
  * @param {Array} props The property names to get values for.
- * @returns {Object} Returns the new array of key-value pairs.
+ * @returns {Object} Returns the key-value pairs.
  */
 function baseToPairs(object, props) {
   return arrayMap(props, function(key) {
@@ -228,25 +229,11 @@ function isHostObject(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) {
-  value = (typeof value == 'number' || reIsUint.test(value)) ? +value : -1;
-  length = length == null ? MAX_SAFE_INTEGER : length;
-  return value > -1 && value % 1 == 0 && value < length;
-}
-
-/**
- * Converts `map` to an array.
+ * Converts `map` to its key-value pairs.
  *
  * @private
  * @param {Object} map The map to convert.
- * @returns {Array} Returns the converted array.
+ * @returns {Array} Returns the key-value pairs.
  */
 function mapToArray(map) {
   var index = -1,
@@ -259,11 +246,11 @@ function mapToArray(map) {
 }
 
 /**
- * Converts `set` to an array.
+ * Converts `set` to an array of its values.
  *
  * @private
  * @param {Object} set The set to convert.
- * @returns {Array} Returns the converted array.
+ * @returns {Array} Returns the values.
  */
 function setToArray(set) {
   var index = -1,
@@ -275,6 +262,23 @@ function setToArray(set) {
   return result;
 }
 
+/**
+ * Converts `set` to its value-value pairs.
+ *
+ * @private
+ * @param {Object} set The set to convert.
+ * @returns {Array} Returns the value-value pairs.
+ */
+function setToPairs(set) {
+  var index = -1,
+      result = Array(set.size);
+
+  set.forEach(function(value) {
+    result[++index] = [value, value];
+  });
+  return result;
+}
+
 /** Used for built-in method references. */
 var arrayProto = Array.prototype,
     objectProto = Object.prototype;
@@ -332,79 +336,225 @@ var symbolProto = Symbol ? Symbol.prototype : undefined,
  *
  * @private
  * @constructor
- * @returns {Object} Returns the new hash object.
+ * @param {Array} [entries] The key-value pairs to cache.
  */
-function Hash() {}
+function Hash(entries) {
+  var index = -1,
+      length = entries ? entries.length : 0;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+/**
+ * Removes all key-value entries from the hash.
+ *
+ * @private
+ * @name clear
+ * @memberOf Hash
+ */
+function hashClear() {
+  this.__data__ = nativeCreate ? nativeCreate(null) : {};
+}
 
 /**
  * Removes `key` and its value from the hash.
  *
  * @private
+ * @name delete
+ * @memberOf Hash
  * @param {Object} hash The hash to modify.
  * @param {string} key The key of the value to remove.
  * @returns {boolean} Returns `true` if the entry was removed, else `false`.
  */
-function hashDelete(hash, key) {
-  return hashHas(hash, key) && delete hash[key];
+function hashDelete(key) {
+  return this.has(key) && delete this.__data__[key];
 }
 
 /**
  * Gets the hash value for `key`.
  *
  * @private
- * @param {Object} hash The hash to query.
+ * @name get
+ * @memberOf Hash
  * @param {string} key The key of the value to get.
  * @returns {*} Returns the entry value.
  */
-function hashGet(hash, key) {
+function hashGet(key) {
+  var data = this.__data__;
   if (nativeCreate) {
-    var result = hash[key];
+    var result = data[key];
     return result === HASH_UNDEFINED ? undefined : result;
   }
-  return hasOwnProperty.call(hash, key) ? hash[key] : undefined;
+  return hasOwnProperty.call(data, key) ? data[key] : undefined;
 }
 
 /**
  * Checks if a hash value for `key` exists.
  *
  * @private
- * @param {Object} hash The hash to query.
+ * @name has
+ * @memberOf Hash
  * @param {string} key The key of the entry to check.
  * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
  */
-function hashHas(hash, key) {
-  return nativeCreate ? hash[key] !== undefined : hasOwnProperty.call(hash, key);
+function hashHas(key) {
+  var data = this.__data__;
+  return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);
 }
 
 /**
  * Sets the hash `key` to `value`.
  *
  * @private
- * @param {Object} hash The hash to modify.
+ * @name set
+ * @memberOf Hash
  * @param {string} key The key of the value to set.
  * @param {*} value The value to set.
+ * @returns {Object} Returns the hash instance.
  */
-function hashSet(hash, key, value) {
-  hash[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
+function hashSet(key, value) {
+  var data = this.__data__;
+  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
+  return this;
 }
 
-// Avoid inheriting from `Object.prototype` when possible.
-Hash.prototype = nativeCreate ? nativeCreate(null) : objectProto;
+// Add methods to `Hash`.
+Hash.prototype.clear = hashClear;
+Hash.prototype['delete'] = hashDelete;
+Hash.prototype.get = hashGet;
+Hash.prototype.has = hashHas;
+Hash.prototype.set = hashSet;
+
+/**
+ * Creates an list cache object.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [entries] The key-value pairs to cache.
+ */
+function ListCache(entries) {
+  var index = -1,
+      length = entries ? entries.length : 0;
+
+  this.clear();
+  while (++index < length) {
+    var entry = entries[index];
+    this.set(entry[0], entry[1]);
+  }
+}
+
+/**
+ * Removes all key-value entries from the list cache.
+ *
+ * @private
+ * @name clear
+ * @memberOf ListCache
+ */
+function listCacheClear() {
+  this.__data__ = [];
+}
+
+/**
+ * Removes `key` and its value from the list cache.
+ *
+ * @private
+ * @name delete
+ * @memberOf ListCache
+ * @param {string} key The key of the value to remove.
+ * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+ */
+function listCacheDelete(key) {
+  var data = this.__data__,
+      index = assocIndexOf(data, key);
+
+  if (index < 0) {
+    return false;
+  }
+  var lastIndex = data.length - 1;
+  if (index == lastIndex) {
+    data.pop();
+  } else {
+    splice.call(data, index, 1);
+  }
+  return true;
+}
+
+/**
+ * Gets the list cache value for `key`.
+ *
+ * @private
+ * @name get
+ * @memberOf ListCache
+ * @param {string} key The key of the value to get.
+ * @returns {*} Returns the entry value.
+ */
+function listCacheGet(key) {
+  var data = this.__data__,
+      index = assocIndexOf(data, key);
+
+  return index < 0 ? undefined : data[index][1];
+}
+
+/**
+ * Checks if a list cache value for `key` exists.
+ *
+ * @private
+ * @name has
+ * @memberOf ListCache
+ * @param {string} key The key of the entry to check.
+ * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+ */
+function listCacheHas(key) {
+  return assocIndexOf(this.__data__, key) > -1;
+}
+
+/**
+ * Sets the list cache `key` to `value`.
+ *
+ * @private
+ * @name set
+ * @memberOf ListCache
+ * @param {string} key The key of the value to set.
+ * @param {*} value The value to set.
+ * @returns {Object} Returns the list cache instance.
+ */
+function listCacheSet(key, value) {
+  var data = this.__data__,
+      index = assocIndexOf(data, key);
+
+  if (index < 0) {
+    data.push([key, value]);
+  } else {
+    data[index][1] = value;
+  }
+  return this;
+}
+
+// Add methods to `ListCache`.
+ListCache.prototype.clear = listCacheClear;
+ListCache.prototype['delete'] = listCacheDelete;
+ListCache.prototype.get = listCacheGet;
+ListCache.prototype.has = listCacheHas;
+ListCache.prototype.set = listCacheSet;
 
 /**
  * Creates a map cache object to store key-value pairs.
  *
  * @private
  * @constructor
- * @param {Array} [values] The values to cache.
+ * @param {Array} [entries] The key-value pairs to cache.
  */
-function MapCache(values) {
+function MapCache(entries) {
   var index = -1,
-      length = values ? values.length : 0;
+      length = entries ? entries.length : 0;
 
   this.clear();
   while (++index < length) {
-    var entry = values[index];
+    var entry = entries[index];
     this.set(entry[0], entry[1]);
   }
 }
@@ -416,10 +566,10 @@ function MapCache(values) {
  * @name clear
  * @memberOf MapCache
  */
-function mapClear() {
+function mapCacheClear() {
   this.__data__ = {
     'hash': new Hash,
-    'map': Map ? new Map : [],
+    'map': new (Map || ListCache),
     'string': new Hash
   };
 }
@@ -433,12 +583,8 @@ function mapClear() {
  * @param {string} key The key of the value to remove.
  * @returns {boolean} Returns `true` if the entry was removed, else `false`.
  */
-function mapDelete(key) {
-  var data = this.__data__;
-  if (isKeyable(key)) {
-    return hashDelete(typeof key == 'string' ? data.string : data.hash, key);
-  }
-  return Map ? data.map['delete'](key) : assocDelete(data.map, key);
+function mapCacheDelete(key) {
+  return getMapData(this, key)['delete'](key);
 }
 
 /**
@@ -450,12 +596,8 @@ function mapDelete(key) {
  * @param {string} key The key of the value to get.
  * @returns {*} Returns the entry value.
  */
-function mapGet(key) {
-  var data = this.__data__;
-  if (isKeyable(key)) {
-    return hashGet(typeof key == 'string' ? data.string : data.hash, key);
-  }
-  return Map ? data.map.get(key) : assocGet(data.map, key);
+function mapCacheGet(key) {
+  return getMapData(this, key).get(key);
 }
 
 /**
@@ -467,12 +609,8 @@ function mapGet(key) {
  * @param {string} key The key of the entry to check.
  * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
  */
-function mapHas(key) {
-  var data = this.__data__;
-  if (isKeyable(key)) {
-    return hashHas(typeof key == 'string' ? data.string : data.hash, key);
-  }
-  return Map ? data.map.has(key) : assocHas(data.map, key);
+function mapCacheHas(key) {
+  return getMapData(this, key).has(key);
 }
 
 /**
@@ -485,41 +623,77 @@ function mapHas(key) {
  * @param {*} value The value to set.
  * @returns {Object} Returns the map cache instance.
  */
-function mapSet(key, value) {
-  var data = this.__data__;
-  if (isKeyable(key)) {
-    hashSet(typeof key == 'string' ? data.string : data.hash, key, value);
-  } else if (Map) {
-    data.map.set(key, value);
-  } else {
-    assocSet(data.map, key, value);
-  }
+function mapCacheSet(key, value) {
+  getMapData(this, key).set(key, value);
   return this;
 }
 
 // Add methods to `MapCache`.
-MapCache.prototype.clear = mapClear;
-MapCache.prototype['delete'] = mapDelete;
-MapCache.prototype.get = mapGet;
-MapCache.prototype.has = mapHas;
-MapCache.prototype.set = mapSet;
+MapCache.prototype.clear = mapCacheClear;
+MapCache.prototype['delete'] = mapCacheDelete;
+MapCache.prototype.get = mapCacheGet;
+MapCache.prototype.has = mapCacheHas;
+MapCache.prototype.set = mapCacheSet;
+
+/**
+ *
+ * Creates an array cache object to store unique values.
+ *
+ * @private
+ * @constructor
+ * @param {Array} [values] The values to cache.
+ */
+function SetCache(values) {
+  var index = -1,
+      length = values ? values.length : 0;
+
+  this.__data__ = new MapCache;
+  while (++index < length) {
+    this.add(values[index]);
+  }
+}
+
+/**
+ * Adds `value` to the array cache.
+ *
+ * @private
+ * @name add
+ * @memberOf SetCache
+ * @alias push
+ * @param {*} value The value to cache.
+ * @returns {Object} Returns the cache instance.
+ */
+function setCacheAdd(value) {
+  this.__data__.set(value, HASH_UNDEFINED);
+  return this;
+}
+
+/**
+ * Checks if `value` is in the array cache.
+ *
+ * @private
+ * @name has
+ * @memberOf SetCache
+ * @param {*} value The value to search for.
+ * @returns {number} Returns `true` if `value` is found, else `false`.
+ */
+function setCacheHas(value) {
+  return this.__data__.has(value);
+}
+
+// Add methods to `SetCache`.
+SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
+SetCache.prototype.has = setCacheHas;
 
 /**
  * Creates a stack cache object to store key-value pairs.
  *
  * @private
  * @constructor
- * @param {Array} [values] The values to cache.
+ * @param {Array} [entries] The key-value pairs to cache.
  */
-function Stack(values) {
-  var index = -1,
-      length = values ? values.length : 0;
-
-  this.clear();
-  while (++index < length) {
-    var entry = values[index];
-    this.set(entry[0], entry[1]);
-  }
+function Stack(entries) {
+  this.__data__ = new ListCache(entries);
 }
 
 /**
@@ -530,7 +704,7 @@ function Stack(values) {
  * @memberOf Stack
  */
 function stackClear() {
-  this.__data__ = { 'array': [], 'map': null };
+  this.__data__ = new ListCache;
 }
 
 /**
@@ -543,10 +717,7 @@ function stackClear() {
  * @returns {boolean} Returns `true` if the entry was removed, else `false`.
  */
 function stackDelete(key) {
-  var data = this.__data__,
-      array = data.array;
-
-  return array ? assocDelete(array, key) : data.map['delete'](key);
+  return this.__data__['delete'](key);
 }
 
 /**
@@ -559,10 +730,7 @@ function stackDelete(key) {
  * @returns {*} Returns the entry value.
  */
 function stackGet(key) {
-  var data = this.__data__,
-      array = data.array;
-
-  return array ? assocGet(array, key) : data.map.get(key);
+  return this.__data__.get(key);
 }
 
 /**
@@ -575,10 +743,7 @@ function stackGet(key) {
  * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
  */
 function stackHas(key) {
-  var data = this.__data__,
-      array = data.array;
-
-  return array ? assocHas(array, key) : data.map.has(key);
+  return this.__data__.has(key);
 }
 
 /**
@@ -592,21 +757,11 @@ function stackHas(key) {
  * @returns {Object} Returns the stack cache instance.
  */
 function stackSet(key, value) {
-  var data = this.__data__,
-      array = data.array;
-
-  if (array) {
-    if (array.length < (LARGE_ARRAY_SIZE - 1)) {
-      assocSet(array, key, value);
-    } else {
-      data.array = null;
-      data.map = new MapCache(array);
-    }
-  }
-  var map = data.map;
-  if (map) {
-    map.set(key, value);
+  var cache = this.__data__;
+  if (cache instanceof ListCache && cache.__data__.length == LARGE_ARRAY_SIZE) {
+    cache = this.__data__ = new MapCache(cache.__data__);
   }
+  cache.set(key, value);
   return this;
 }
 
@@ -617,53 +772,6 @@ Stack.prototype.get = stackGet;
 Stack.prototype.has = stackHas;
 Stack.prototype.set = stackSet;
 
-/**
- * Removes `key` and its value from the associative array.
- *
- * @private
- * @param {Array} array The array to modify.
- * @param {string} key The key of the value to remove.
- * @returns {boolean} Returns `true` if the entry was removed, else `false`.
- */
-function assocDelete(array, key) {
-  var index = assocIndexOf(array, key);
-  if (index < 0) {
-    return false;
-  }
-  var lastIndex = array.length - 1;
-  if (index == lastIndex) {
-    array.pop();
-  } else {
-    splice.call(array, index, 1);
-  }
-  return true;
-}
-
-/**
- * Gets the associative array value for `key`.
- *
- * @private
- * @param {Array} array The array to query.
- * @param {string} key The key of the value to get.
- * @returns {*} Returns the entry value.
- */
-function assocGet(array, key) {
-  var index = assocIndexOf(array, key);
-  return index < 0 ? undefined : array[index][1];
-}
-
-/**
- * Checks if an associative array value for `key` exists.
- *
- * @private
- * @param {Array} array The array to query.
- * @param {string} key The key of the entry to check.
- * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
- */
-function assocHas(array, key) {
-  return assocIndexOf(array, key) > -1;
-}
-
 /**
  * Gets the index at which the `key` is found in `array` of key-value pairs.
  *
@@ -682,23 +790,6 @@ function assocIndexOf(array, key) {
   return -1;
 }
 
-/**
- * Sets the associative array `key` to `value`.
- *
- * @private
- * @param {Array} array The array to modify.
- * @param {string} key The key of the value to set.
- * @param {*} value The value to set.
- */
-function assocSet(array, key, value) {
-  var index = assocIndexOf(array, key);
-  if (index < 0) {
-    array.push([key, value]);
-  } else {
-    array[index][1] = value;
-  }
-}
-
 /**
  * The base implementation of `_.get` without support for default values.
  *
@@ -714,7 +805,7 @@ function baseGet(object, path) {
       length = path.length;
 
   while (object != null && index < length) {
-    object = object[path[index++]];
+    object = object[toKey(path[index++])];
   }
   return (index && index == length) ? object : undefined;
 }
@@ -925,7 +1016,7 @@ function baseKeys(object) {
  *
  * @private
  * @param {Object} source The object of property values to match.
- * @returns {Function} Returns the new function.
+ * @returns {Function} Returns the new spec function.
  */
 function baseMatches(source) {
   var matchData = getMatchData(source);
@@ -943,11 +1034,11 @@ function baseMatches(source) {
  * @private
  * @param {string} path The path of the property to get.
  * @param {*} srcValue The value to match.
- * @returns {Function} Returns the new function.
+ * @returns {Function} Returns the new spec function.
  */
 function baseMatchesProperty(path, srcValue) {
   if (isKey(path) && isStrictComparable(srcValue)) {
-    return matchesStrictComparable(path, srcValue);
+    return matchesStrictComparable(toKey(path), srcValue);
   }
   return function(object) {
     var objValue = get(object, path);
@@ -962,7 +1053,7 @@ function baseMatchesProperty(path, srcValue) {
  *
  * @private
  * @param {string} key The key of the property to get.
- * @returns {Function} Returns the new function.
+ * @returns {Function} Returns the new accessor function.
  */
 function baseProperty(key) {
   return function(object) {
@@ -975,7 +1066,7 @@ function baseProperty(key) {
  *
  * @private
  * @param {Array|string} path The path of the property to get.
- * @returns {Function} Returns the new function.
+ * @returns {Function} Returns the new accessor function.
  */
 function basePropertyDeep(path) {
   return function(object) {
@@ -994,6 +1085,26 @@ function castPath(value) {
   return isArray(value) ? value : stringToPath(value);
 }
 
+/**
+ * Creates a `_.toPairs` or `_.toPairsIn` function.
+ *
+ * @private
+ * @param {Function} keysFunc The function to get the keys of a given object.
+ * @returns {Function} Returns the new pairs function.
+ */
+function createToPairs(keysFunc) {
+  return function(object) {
+    var tag = getTag(object);
+    if (tag == mapTag) {
+      return mapToArray(object);
+    }
+    if (tag == setTag) {
+      return setToPairs(object);
+    }
+    return baseToPairs(object, keysFunc(object));
+  };
+}
+
 /**
  * A specialized version of `baseIsEqualDeep` for arrays with support for
  * partial deep comparisons.
@@ -1009,9 +1120,7 @@ function castPath(value) {
  * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
  */
 function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
-  var index = -1,
-      isPartial = bitmask & PARTIAL_COMPARE_FLAG,
-      isUnordered = bitmask & UNORDERED_COMPARE_FLAG,
+  var isPartial = bitmask & PARTIAL_COMPARE_FLAG,
       arrLength = array.length,
       othLength = other.length;
 
@@ -1023,7 +1132,10 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
   if (stacked) {
     return stacked == other;
   }
-  var result = true;
+  var index = -1,
+      result = true,
+      seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined;
+
   stack.set(array, other);
 
   // Ignore non-index properties.
@@ -1044,10 +1156,12 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) {
       break;
     }
     // Recursively compare arrays (susceptible to call stack limits).
-    if (isUnordered) {
-      if (!arraySome(other, function(othValue) {
-            return arrValue === othValue ||
-              equalFunc(arrValue, othValue, customizer, bitmask, stack);
+    if (seen) {
+      if (!arraySome(other, function(othValue, othIndex) {
+            if (!seen.has(othIndex) &&
+                (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) {
+              return seen.add(othIndex);
+            }
           })) {
         result = false;
         break;
@@ -1238,6 +1352,21 @@ function equalObjects(object, other, equalFunc, customizer, bitmask, stack) {
  */
 var getLength = baseProperty('length');
 
+/**
+ * Gets the data for `map`.
+ *
+ * @private
+ * @param {Object} map The map to query.
+ * @param {string} key The reference key.
+ * @returns {*} Returns the map data.
+ */
+function getMapData(map, key) {
+  var data = map.__data__;
+  return isKeyable(key)
+    ? data[typeof key == 'string' ? 'string' : 'hash']
+    : data.map;
+}
+
 /**
  * Gets the property names, values, and compare flags of `object`.
  *
@@ -1332,7 +1461,7 @@ function hasPath(object, path, hasFunc) {
       length = path.length;
 
   while (++index < length) {
-    var key = path[index];
+    var key = toKey(path[index]);
     if (!(result = object != null && hasFunc(object, key))) {
       break;
     }
@@ -1363,6 +1492,21 @@ function indexKeys(object) {
   return null;
 }
 
+/**
+ * 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) {
+  length = length == null ? MAX_SAFE_INTEGER : length;
+  return !!length &&
+    (typeof value == 'number' || reIsUint.test(value)) &&
+    (value > -1 && value % 1 == 0 && value < length);
+}
+
 /**
  * Checks if `value` is a property name and not a property path.
  *
@@ -1372,13 +1516,16 @@ function indexKeys(object) {
  * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
  */
 function isKey(value, object) {
+  if (isArray(value)) {
+    return false;
+  }
   var type = typeof value;
-  if (type == 'number' || type == 'symbol') {
+  if (type == 'number' || type == 'symbol' || type == 'boolean' ||
+      value == null || isSymbol(value)) {
     return true;
   }
-  return !isArray(value) &&
-    (isSymbol(value) || reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
-      (object != null && value in Object(object)));
+  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
+    (object != null && value in Object(object));
 }
 
 /**
@@ -1390,8 +1537,9 @@ function isKey(value, object) {
  */
 function isKeyable(value) {
   var type = typeof value;
-  return type == 'number' || type == 'boolean' ||
-    (type == 'string' && value != '__proto__') || value == null;
+  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
+    ? (value !== '__proto__')
+    : (value === null);
 }
 
 /**
@@ -1427,7 +1575,7 @@ function isStrictComparable(value) {
  * @private
  * @param {string} key The key of the property to get.
  * @param {*} srcValue The value to match.
- * @returns {Function} Returns the new function.
+ * @returns {Function} Returns the new spec function.
  */
 function matchesStrictComparable(key, srcValue) {
   return function(object) {
@@ -1439,6 +1587,21 @@ function matchesStrictComparable(key, srcValue) {
   };
 }
 
+/**
+ * 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.
+ */
+function toKey(value) {
+  if (typeof value == 'string' || isSymbol(value)) {
+    return value;
+  }
+  var result = (value + '');
+  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
+}
+
 /**
  * Converts `func` to its source code.
  *
@@ -1924,7 +2087,8 @@ function keys(object) {
 
 /**
  * Creates an array of own enumerable string keyed-value pairs for `object`
- * which can be consumed by `_.fromPairs`.
+ * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
+ * entries are returned.
  *
  * @static
  * @memberOf _
@@ -1932,7 +2096,7 @@ function keys(object) {
  * @alias entries
  * @category Object
  * @param {Object} object The object to query.
- * @returns {Array} Returns the new array of key-value pairs.
+ * @returns {Array} Returns the key-value pairs.
  * @example
  *
  * function Foo() {
@@ -1945,9 +2109,7 @@ function keys(object) {
  * _.toPairs(new Foo);
  * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
  */
-function toPairs(object) {
-  return baseToPairs(object, keys(object));
-}
+var toPairs = createToPairs(keys);
 
 /**
  * This method returns the first argument given to it.
@@ -1977,7 +2139,7 @@ function identity(value) {
  * @since 2.4.0
  * @category Util
  * @param {Array|string} path The path of the property to get.
- * @returns {Function} Returns the new function.
+ * @returns {Function} Returns the new accessor function.
  * @example
  *
  * var objects = [
@@ -1992,7 +2154,7 @@ function identity(value) {
  * // => [1, 2]
  */
 function property(path) {
-  return isKey(path) ? baseProperty(path) : basePropertyDeep(path);
+  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
 }
 
 module.exports = baseIteratee;

lodash._baseiteratee/package.json

@@ -1,6 +1,6 @@
 {
   "name": "lodash._baseiteratee",
-  "version": "4.6.1",
+  "version": "4.6.2",
   "description": "The internal lodash function `baseIteratee` exported as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",