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/fork-ts-checker-webpack-plugin/lib/formatter/WebpackFormatter.js

@@ -0,0 +1,28 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const os_1 = __importDefault(require("os"));
+const chalk_1 = __importDefault(require("chalk"));
+const path_1 = __importDefault(require("path"));
+const issue_1 = require("../issue");
+const forwardSlash_1 = __importDefault(require("../utils/path/forwardSlash"));
+function createWebpackFormatter(formatter) {
+    // mimics webpack error formatter
+    return function webpackFormatter(issue) {
+        const color = issue.severity === 'warning' ? chalk_1.default.yellow.bold : chalk_1.default.red.bold;
+        const severity = issue.severity.toUpperCase();
+        if (issue.file) {
+            let location = forwardSlash_1.default(path_1.default.relative(process.cwd(), issue.file));
+            if (issue.location) {
+                location += `:${issue_1.formatIssueLocation(issue.location)}`;
+            }
+            return [color(`${severity} in ${location}`), formatter(issue), ''].join(os_1.default.EOL);
+        }
+        else {
+            return [color(`${severity} in `) + formatter(issue), ''].join(os_1.default.EOL);
+        }
+    };
+}
+exports.createWebpackFormatter = createWebpackFormatter;