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/@testing-library/user-event/dist/keyboard/index.js

@@ -0,0 +1,74 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.keyboard = keyboard;
+exports.keyboardImplementationWrapper = keyboardImplementationWrapper;
+Object.defineProperty(exports, "specialCharMap", {
+  enumerable: true,
+  get: function () {
+    return _specialCharMap.specialCharMap;
+  }
+});
+
+var _dom = require("@testing-library/dom");
+
+var _keyboardImplementation = require("./keyboardImplementation");
+
+var _keyMap = require("./keyMap");
+
+var _specialCharMap = require("./specialCharMap");
+
+function keyboard(text, options) {
+  var _options$delay;
+
+  const {
+    promise,
+    state
+  } = keyboardImplementationWrapper(text, options);
+
+  if (((_options$delay = options == null ? void 0 : options.delay) != null ? _options$delay : 0) > 0) {
+    return (0, _dom.getConfig)().asyncWrapper(() => promise.then(() => state));
+  } else {
+    // prevent users from dealing with UnhandledPromiseRejectionWarning in sync call
+    promise.catch(console.error);
+    return state;
+  }
+}
+
+function keyboardImplementationWrapper(text, config = {}) {
+  const {
+    keyboardState: state = createKeyboardState(),
+    delay = 0,
+    document: doc = document,
+    autoModify = false,
+    keyboardMap = _keyMap.defaultKeyMap
+  } = config;
+  const options = {
+    delay,
+    document: doc,
+    autoModify,
+    keyboardMap
+  };
+  return {
+    promise: (0, _keyboardImplementation.keyboardImplementation)(text, options, state),
+    state,
+    releaseAllKeys: () => (0, _keyboardImplementation.releaseAllKeys)(options, state)
+  };
+}
+
+function createKeyboardState() {
+  return {
+    activeElement: null,
+    pressed: [],
+    carryChar: '',
+    modifiers: {
+      alt: false,
+      caps: false,
+      ctrl: false,
+      meta: false,
+      shift: false
+    }
+  };
+}