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/javascript/ChunkHelpers.js

@@ -0,0 +1,34 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const Entrypoint = require("../Entrypoint");
+
+/** @typedef {import("../Chunk")} Chunk */
+
+/**
+ * @param {Entrypoint} entrypoint a chunk group
+ * @param {(Chunk | null)=} excludedChunk1 current chunk which is excluded
+ * @param {(Chunk | null)=} excludedChunk2 runtime chunk which is excluded
+ * @returns {Set<Chunk>} chunks
+ */
+const getAllChunks = (entrypoint, excludedChunk1, excludedChunk2) => {
+	const queue = new Set([entrypoint]);
+	const chunks = new Set();
+	for (const entrypoint of queue) {
+		for (const chunk of entrypoint.chunks) {
+			if (chunk === excludedChunk1) continue;
+			if (chunk === excludedChunk2) continue;
+			chunks.add(chunk);
+		}
+		for (const parent of entrypoint.parentsIterable) {
+			if (parent instanceof Entrypoint) queue.add(parent);
+		}
+	}
+	return chunks;
+};
+
+module.exports.getAllChunks = getAllChunks;