*: only clone plain objects

Close #570
taye · Jan 2, 2018 · 954a408 · 954a408
1 parent b4839f0
commit 954a408
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diff --git a/src/utils/clone.js b/src/utils/clone.js
@@ -3,7 +3,7 @@ const is = require('./is');
 module.exports = function clone (source) {
   const dest = {};
   for (const prop in source) {
-    if (is.object(source[prop])) {
+    if (is.plainObject(source[prop])) {
       dest[prop] = clone(source[prop]);
     } else {
       dest[prop] = source[prop];

diff --git a/src/utils/is.js b/src/utils/is.js
@@ -27,6 +27,8 @@ const is = {
       ? thing instanceof _window.Element //DOM2
       : thing.nodeType === 1 && typeof thing.nodeName === 'string');
   },
+
+  plainObject: thing => is.object(thing) && thing.constructor.name === 'Object',
 };
 
 is.array = thing => (is.object(thing)