inherits-ex - npm Package Compare versions

Comparing version 2.1.0-alpha.5 to 2.1.0-alpha.6

lib/_extend.js

@@ -27,3 +27,3 @@ "use strict";
     const source = arguments[i];
-    defineProperties(target, getOwnPropertyDescriptors(source));
+    if (source) defineProperties(target, getOwnPropertyDescriptors(source));
     /*
@@ -30,0 +30,0 @@ for (const key in source) {

package.json

@@ -5,3 +5,3 @@ {
   "homepage": "https://github.com/snowyu/inherits-ex.js",
-  "version": "2.1.0-alpha.5",
+  "version": "2.1.0-alpha.6",
   "author": {
@@ -8,0 +8,0 @@ "name": "Riceball LEE",

src/_extend.js

@@ -22,3 +22,3 @@ const defineProperties          = Object.defineProperties
 
-    defineProperties(target, getOwnPropertyDescriptors(source))
+    if (source) defineProperties(target, getOwnPropertyDescriptors(source))
     /*
@@ -25,0 +25,0 @@ for (const key in source) {

test/_extend-test.js

@@ -54,2 +54,11 @@ import assert from 'assert';
   });
+  it('should only extend the exists source object', () => {
+    const target = { a: 1 };
+    const source = Object.create(null, {
+      b: { value: 2 },
+      c: { value: 3, enumerable: true }
+    });
+    const result = _extend(target, source, null, undefined);
+    assert.deepStrictEqual(result, { a: 1, c: 3 });
+  });
 });

No alert changes

Improved metrics

Total package byte prevSize

245762

increased by0.14%

Lines of code

6477

increased by0.14%

No dependency changes