diff --git a/README.md b/README.md
index 96456499d..868dee17c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# lodash v4.5.4
+# lodash v4.5.5
 
 The [lodash](https://lodash.com/) library exported as [npm packages](https://www.npmjs.com/browse/keyword/lodash-modularized) per method.
 
diff --git a/lodash._baseclone/README.md b/lodash._baseclone/README.md
index a9ef3fbb2..7a370728e 100644
--- a/lodash._baseclone/README.md
+++ b/lodash._baseclone/README.md
@@ -1,4 +1,4 @@
-# lodash._baseclone v4.5.4
+# lodash._baseclone v4.5.5
 
 The internal [lodash](https://lodash.com/) function `baseClone` exported as a [Node.js](https://nodejs.org/) module.
 
@@ -15,4 +15,4 @@ In Node.js:
 var baseClone = require('lodash._baseclone');
 ```
 
-See the [package source](https://github.com/lodash/lodash/blob/4.5.4-npm-packages/lodash._baseclone) for more details.
+See the [package source](https://github.com/lodash/lodash/blob/4.5.5-npm-packages/lodash._baseclone) for more details.
diff --git a/lodash._baseclone/index.js b/lodash._baseclone/index.js
index f93673f61..70ef5561e 100644
--- a/lodash._baseclone/index.js
+++ b/lodash._baseclone/index.js
@@ -1,5 +1,5 @@
 /**
- * lodash 4.5.4 (Custom Build) <https://lodash.com/>
+ * lodash 4.5.5 (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>
@@ -46,7 +46,10 @@ var arrayBufferTag = '[object ArrayBuffer]',
     uint16Tag = '[object Uint16Array]',
     uint32Tag = '[object Uint32Array]';
 
-/** Used to match `RegExp` [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns). */
+/**
+ * Used to match `RegExp`
+ * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).
+ */
 var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
 
 /** Used to match `RegExp` flags from their coerced string values. */
@@ -317,7 +320,8 @@ var funcToString = Function.prototype.toString;
 var hasOwnProperty = objectProto.hasOwnProperty;
 
 /**
- * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
  * of values.
  */
 var objectToString = objectProto.toString;
@@ -350,18 +354,18 @@ var DataView = getNative(root, 'DataView'),
     nativeCreate = getNative(Object, 'create');
 
 /** Used to detect maps, sets, and weakmaps. */
-var dataViewCtorString = DataView ? (DataView + '') : '',
-    mapCtorString = Map ? funcToString.call(Map) : '',
-    promiseCtorString = Promise ? funcToString.call(Promise) : '',
-    setCtorString = Set ? funcToString.call(Set) : '',
-    weakMapCtorString = WeakMap ? funcToString.call(WeakMap) : '';
+var dataViewCtorString = toSource(DataView),
+    mapCtorString = toSource(Map),
+    promiseCtorString = toSource(Promise),
+    setCtorString = toSource(Set),
+    weakMapCtorString = toSource(WeakMap);
 
 /** Used to convert symbols to primitives and strings. */
 var symbolProto = Symbol ? Symbol.prototype : undefined,
     symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;
 
 /**
- * Creates an hash object.
+ * Creates a hash object.
  *
  * @private
  * @constructor
@@ -1178,8 +1182,8 @@ if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
     (WeakMap && getTag(new WeakMap) != weakMapTag)) {
   getTag = function(value) {
     var result = objectToString.call(value),
-        Ctor = result == objectTag ? value.constructor : null,
-        ctorString = typeof Ctor == 'function' ? funcToString.call(Ctor) : '';
+        Ctor = result == objectTag ? value.constructor : undefined,
+        ctorString = Ctor ? toSource(Ctor) : undefined;
 
     if (ctorString) {
       switch (ctorString) {
@@ -1319,6 +1323,25 @@ function isPrototype(value) {
   return value === proto;
 }
 
+/**
+ * Converts `func` to its source code.
+ *
+ * @private
+ * @param {Function} func The function to process.
+ * @returns {string} Returns the source code.
+ */
+function toSource(func) {
+  if (func != null) {
+    try {
+      return funcToString.call(func);
+    } catch (e) {}
+    try {
+      return (func + '');
+    } catch (e) {}
+  }
+  return '';
+}
+
 /**
  * Performs a
  * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
@@ -1544,8 +1567,9 @@ function isLength(value) {
 }
 
 /**
- * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
- * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+ * Checks if `value` is the
+ * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)
+ * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
  *
  * @static
  * @memberOf _
@@ -1619,14 +1643,11 @@ function isObjectLike(value) {
  * // => false
  */
 function isNative(value) {
-  if (value == null) {
+  if (!isObject(value)) {
     return false;
   }
-  if (isFunction(value)) {
-    return reIsNative.test(funcToString.call(value));
-  }
-  return isObjectLike(value) &&
-    (isHostObject(value) ? reIsNative : reIsHostCtor).test(value);
+  var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
+  return pattern.test(toSource(value));
 }
 
 /**
diff --git a/lodash._baseclone/package.json b/lodash._baseclone/package.json
index aa8818570..776ba9e4f 100644
--- a/lodash._baseclone/package.json
+++ b/lodash._baseclone/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lodash._baseclone",
-  "version": "4.5.4",
+  "version": "4.5.5",
   "description": "The internal lodash function `baseClone` exported as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",