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/getFunctionExpression.js

@@ -0,0 +1,64 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/** @typedef {import("estree").ArrowFunctionExpression} ArrowFunctionExpression */
+/** @typedef {import("estree").Expression} Expression */
+/** @typedef {import("estree").FunctionExpression} FunctionExpression */
+/** @typedef {import("estree").SpreadElement} SpreadElement */
+
+/**
+ * @param {Expression | SpreadElement} expr expressions
+ * @returns {{fn: FunctionExpression | ArrowFunctionExpression, expressions: (Expression | SpreadElement)[], needThis: boolean | undefined } | undefined} function expression with additional information
+ */
+module.exports = (expr) => {
+	// <FunctionExpression>
+	if (
+		expr.type === "FunctionExpression" ||
+		expr.type === "ArrowFunctionExpression"
+	) {
+		return {
+			fn: expr,
+			expressions: [],
+			needThis: false
+		};
+	}
+
+	// <FunctionExpression>.bind(<Expression>)
+	if (
+		expr.type === "CallExpression" &&
+		expr.callee.type === "MemberExpression" &&
+		expr.callee.object.type === "FunctionExpression" &&
+		expr.callee.property.type === "Identifier" &&
+		expr.callee.property.name === "bind" &&
+		expr.arguments.length === 1
+	) {
+		return {
+			fn: expr.callee.object,
+			expressions: [expr.arguments[0]],
+			needThis: undefined
+		};
+	}
+	// (function(_this) {return <FunctionExpression>})(this) (Coffeescript)
+	if (
+		expr.type === "CallExpression" &&
+		expr.callee.type === "FunctionExpression" &&
+		expr.callee.body.type === "BlockStatement" &&
+		expr.arguments.length === 1 &&
+		expr.arguments[0].type === "ThisExpression" &&
+		expr.callee.body.body &&
+		expr.callee.body.body.length === 1 &&
+		expr.callee.body.body[0].type === "ReturnStatement" &&
+		expr.callee.body.body[0].argument &&
+		expr.callee.body.body[0].argument.type === "FunctionExpression"
+	) {
+		return {
+			fn: expr.callee.body.body[0].argument,
+			expressions: [],
+			needThis: true
+		};
+	}
+};