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/webpack/lib/dependencies/DynamicExports.js

@@ -0,0 +1,73 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/** @typedef {import("../Module").BuildMeta} BuildMeta */
+/** @typedef {import("../Parser").ParserState} ParserState */
+
+/** @type {WeakMap<ParserState, boolean>} */
+const parserStateExportsState = new WeakMap();
+
+/**
+ * @param {ParserState} parserState parser state
+ * @returns {void}
+ */
+module.exports.bailout = (parserState) => {
+	const value = parserStateExportsState.get(parserState);
+	parserStateExportsState.set(parserState, false);
+	if (value === true) {
+		const buildMeta = /** @type {BuildMeta} */ (parserState.module.buildMeta);
+		buildMeta.exportsType = undefined;
+		buildMeta.defaultObject = false;
+	}
+};
+
+/**
+ * @param {ParserState} parserState parser state
+ * @returns {void}
+ */
+module.exports.enable = (parserState) => {
+	const value = parserStateExportsState.get(parserState);
+	if (value === false) return;
+	parserStateExportsState.set(parserState, true);
+	if (value !== true) {
+		const buildMeta = /** @type {BuildMeta} */ (parserState.module.buildMeta);
+		buildMeta.exportsType = "default";
+		buildMeta.defaultObject = "redirect";
+	}
+};
+
+/**
+ * @param {ParserState} parserState parser state
+ * @returns {boolean} true, when enabled
+ */
+module.exports.isEnabled = (parserState) => {
+	const value = parserStateExportsState.get(parserState);
+	return value === true;
+};
+
+/**
+ * @param {ParserState} parserState parser state
+ * @returns {void}
+ */
+module.exports.setDynamic = (parserState) => {
+	const value = parserStateExportsState.get(parserState);
+	if (value !== true) return;
+	/** @type {BuildMeta} */
+	(parserState.module.buildMeta).exportsType = "dynamic";
+};
+
+/**
+ * @param {ParserState} parserState parser state
+ * @returns {void}
+ */
+module.exports.setFlagged = (parserState) => {
+	const value = parserStateExportsState.get(parserState);
+	if (value !== true) return;
+	const buildMeta = /** @type {BuildMeta} */ (parserState.module.buildMeta);
+	if (buildMeta.exportsType === "dynamic") return;
+	buildMeta.exportsType = "flagged";
+};