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/es-abstract/2023/AddEntriesFromIterable.js

@@ -0,0 +1,44 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+var isObject = require('es-object-atoms/isObject');
+var inspect = require('object-inspect');
+
+var Call = require('./Call');
+var Get = require('./Get');
+var GetIterator = require('./GetIterator');
+var IsCallable = require('./IsCallable');
+var IteratorClose = require('./IteratorClose');
+var IteratorStep = require('./IteratorStep');
+var IteratorValue = require('./IteratorValue');
+var ThrowCompletion = require('./ThrowCompletion');
+
+// https://262.ecma-international.org/14.0/#sec-add-entries-from-iterable
+
+module.exports = function AddEntriesFromIterable(target, iterable, adder) {
+	if (!IsCallable(adder)) {
+		throw new $TypeError('Assertion failed: `adder` is not callable');
+	}
+	if (iterable == null) {
+		throw new $TypeError('Assertion failed: `iterable` is present, and not nullish');
+	}
+	var iteratorRecord = GetIterator(iterable, 'sync');
+	while (true) { // eslint-disable-line no-constant-condition
+		var next = IteratorStep(iteratorRecord);
+		if (!next) {
+			return target;
+		}
+		var nextItem = IteratorValue(next);
+		if (!isObject(nextItem)) {
+			var error = ThrowCompletion(new $TypeError('iterator next must return an Object, got ' + inspect(nextItem)));
+			return IteratorClose(iteratorRecord, error);
+		}
+		try {
+			var k = Get(nextItem, '0');
+			var v = Get(nextItem, '1');
+			Call(adder, target, [k, v]);
+		} catch (e) {
+			return IteratorClose(iteratorRecord, ThrowCompletion(e));
+		}
+	}
+};