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/tsconfig-paths/lib/try-path.d.ts

@@ -0,0 +1,15 @@
+import { MappingEntry } from "./mapping-entry";
+export interface TryPath {
+    readonly type: "file" | "extension" | "index" | "package";
+    readonly path: string;
+}
+/**
+ * Builds a list of all physical paths to try by:
+ * 1. Check for file named exactly as request.
+ * 2. Check for files named as request ending in any of the extensions.
+ * 3. Check for file specified in package.json's main property.
+ * 4. Check for files named as request ending in "index" with any of the extensions.
+ */
+export declare function getPathsToTry(extensions: ReadonlyArray<string>, absolutePathMappings: ReadonlyArray<MappingEntry>, requestedModule: string): ReadonlyArray<TryPath> | undefined;
+export declare function getStrippedPath(tryPath: TryPath): string;
+export declare function exhaustiveTypeException(check: never): never;