Fix object coercion.

.internal/baseKeys.js

@@ -11,11 +11,12 @@ const hasOwnProperty = Object.prototype.hasOwnProperty
  * @returns {Array} Returns the array of property names.
  */
 function baseKeys(object) {
+  object = Object(object)
   if (!isPrototype(object)) {
-    return Object.keys(Object(object))
+    return Object.keys(object)
   }
   const result = []
-  for (const key in Object(object)) {
+  for (const key in object) {
     if (hasOwnProperty.call(object, key) && key != 'constructor') {
       result.push(key)
     }

everyValue.js

@@ -20,7 +20,9 @@
  * // => false
  */
 function everyValue(object, predicate) {
-  const props = Object.keys(Object(object))
+  object = Object(object)
+  const props = Object.keys(object)
+
   for (const key of props) {
     if (!predicate(object[key], key, object)) {
       return false

filterObject.js

@@ -17,8 +17,10 @@
  * // => [5, 10]
  */
 function filterObject(object, predicate) {
+  object = Object(object)
   const result = []
-  Object.keys(Object(object)).forEach((key) => {
+
+  Object.keys(object).forEach((key) => {
     const value = object[key]
     if (predicate(value, key, object)) {
       result.push(value)

forOwn.js

@@ -24,9 +24,8 @@
  * // => Logs 'a' then 'b' (iteration order is not guaranteed).
  */
 function forOwn(object, iteratee) {
-  if (object != null) {
+  object = Object(object)
-    Object.keys(Object(object)).forEach((key) => iteratee(object[key], key, object))
+  Object.keys(object).forEach((key) => iteratee(object[key], key, object))
-  }
 }
 
 export default forOwn

mapKey.js

@@ -18,8 +18,10 @@
  * // => { 'a1': 1, 'b2': 2 }
  */
 function mapKey(object, iteratee) {
+  object = Object(object)
   const result = {}
-  Object.keys(Object(object)).forEach((key) => {
+
+  Object.keys(object).forEach((key) => {
     const value = object[key]
     result[iteratee(value, key, object)] = value
   })

mapValue.js

@@ -21,8 +21,10 @@
  * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
  */
 function mapValue(object, iteratee) {
+  object = Object(object)
   const result = {}
-  Object.keys(Object(object)).forEach((key) => {
+
+  Object.keys(object).forEach((key) => {
     result[key] = iteratee(object[key], key, object)
   })
   return result

someValue.js

@@ -15,7 +15,9 @@
  * // => true
  */
 function someValues(object, predicate) {
-  const props = Object.keys(Object(object))
+  object = Object(object)
+  const props = Object.keys(object)
+
   for (const key of props) {
     if (predicate(object[key], key, object)) {
       return true