Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/object.getownpropertydescriptors/test/index.js

@@ -0,0 +1,17 @@
+'use strict';
+
+var getDescriptors = require('../');
+var test = require('tape');
+var runTests = require('./tests');
+
+test('as a function', function (t) {
+	t.test('bad object/this value', function (st) {
+		st['throws'](function () { return getDescriptors(undefined); }, TypeError, 'undefined is not an object');
+		st['throws'](function () { return getDescriptors(null); }, TypeError, 'null is not an object');
+		st.end();
+	});
+
+	runTests(getDescriptors, t);
+
+	t.end();
+});