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/sucrase/dist/esm/parser/index.js

@@ -0,0 +1,31 @@
+
+
+import {augmentError, initParser, state} from "./traverser/base";
+import {parseFile} from "./traverser/index";
+
+export class File {
+  
+  
+
+  constructor(tokens, scopes) {
+    this.tokens = tokens;
+    this.scopes = scopes;
+  }
+}
+
+export function parse(
+  input,
+  isJSXEnabled,
+  isTypeScriptEnabled,
+  isFlowEnabled,
+) {
+  if (isFlowEnabled && isTypeScriptEnabled) {
+    throw new Error("Cannot combine flow and typescript plugins.");
+  }
+  initParser(input, isJSXEnabled, isTypeScriptEnabled, isFlowEnabled);
+  const result = parseFile();
+  if (state.error) {
+    throw augmentError(state.error);
+  }
+  return result;
+}