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/jest-cli/build/init/generateConfigFile.js

@@ -0,0 +1,104 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+exports.default = void 0;
+
+function _jestConfig() {
+  const data = require('jest-config');
+
+  _jestConfig = function () {
+    return data;
+  };
+
+  return data;
+}
+
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+const stringifyOption = (option, map, linePrefix = '') => {
+  const optionDescription = `  // ${_jestConfig().descriptions[option]}`;
+  const stringifiedObject = `${option}: ${JSON.stringify(
+    map[option],
+    null,
+    2
+  )}`;
+  return (
+    optionDescription +
+    '\n' +
+    stringifiedObject
+      .split('\n')
+      .map(line => '  ' + linePrefix + line)
+      .join('\n') +
+    ',\n'
+  );
+};
+
+const generateConfigFile = (results, generateEsm = false) => {
+  const {useTypescript, coverage, coverageProvider, clearMocks, environment} =
+    results;
+  const overrides = {};
+
+  if (coverage) {
+    Object.assign(overrides, {
+      collectCoverage: true,
+      coverageDirectory: 'coverage'
+    });
+  }
+
+  if (coverageProvider === 'v8') {
+    Object.assign(overrides, {
+      coverageProvider: 'v8'
+    });
+  }
+
+  if (environment === 'jsdom') {
+    Object.assign(overrides, {
+      testEnvironment: 'jsdom'
+    });
+  }
+
+  if (clearMocks) {
+    Object.assign(overrides, {
+      clearMocks: true
+    });
+  }
+
+  const overrideKeys = Object.keys(overrides);
+  const properties = [];
+
+  for (const option in _jestConfig().descriptions) {
+    const opt = option;
+
+    if (overrideKeys.includes(opt)) {
+      properties.push(stringifyOption(opt, overrides));
+    } else {
+      properties.push(stringifyOption(opt, _jestConfig().defaults, '// '));
+    }
+  }
+
+  const configHeaderMessage = `/*
+ * For a detailed explanation regarding each configuration property${
+   useTypescript ? ' and type check' : ''
+ }, visit:
+ * https://jestjs.io/docs/configuration
+ */
+
+`;
+  return (
+    configHeaderMessage +
+    (useTypescript || generateEsm
+      ? 'export default {\n'
+      : 'module.exports = {\n') +
+    properties.join('\n') +
+    '};\n'
+  );
+};
+
+var _default = generateConfigFile;
+exports.default = _default;