[Demo] Modernize TypeScript demos to NodeNext + ES2022

Author: minggangw

README.md

@@ -199,9 +199,9 @@ TypeScript declaration files are included in the package and exposed through the
 ```jsonc
 {
   "compilerOptions": {
-    "module": "commonjs",
-    "moduleResolution": "node",
-    "target": "es2020",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "target": "es2022",
   },
 }
 ```

demo/typescript/README.md

@@ -42,7 +42,7 @@ Asynchronous actions with progress feedback and cancellation
 
 ### Modern Development
 
-- **ES2020+ syntax** with async/await patterns
+- **ES2022+ syntax** with async/await patterns
 - **Modular architecture** with clean separation of concerns
 - **Error boundaries** with comprehensive exception handling
 - **Graceful shutdown** handling for SIGINT/SIGTERM

demo/typescript/actions/README.md

@@ -36,8 +36,6 @@ demo/typescript/actions/
 ├── src/
 │   ├── client.ts          # Action client implementation
 │   └── server.ts          # Action server implementation
-├── types/
-│   └── rclnodejs.d.ts     # Type definitions
 ├── package.json           # Project configuration
 ├── tsconfig.json          # TypeScript configuration
 ├── .gitignore            # Git ignore rules

demo/typescript/actions/tsconfig.json

@@ -1,8 +1,9 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
-    "module": "CommonJS",
-    "lib": ["ES2020", "DOM"],
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "lib": ["ES2022", "DOM"],
     "outDir": "./dist",
     "rootDir": "./src",
     "strict": true,
@@ -16,7 +17,7 @@
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "types": ["node"],
-    "typeRoots": ["./types", "./node_modules/@types"]
+    "typeRoots": ["./node_modules/@types"]
   },
   "include": [
     "src/**/*"

demo/typescript/services/README.md

@@ -199,7 +199,7 @@ Starting TypeScript Service Client Demo...
 
 This demo includes:
 
-- **Local Type Definitions**: Custom TypeScript definitions for rclnodejs in `types/rclnodejs.d.ts`
+- **Package Type Definitions**: Uses the in-tree rclnodejs TypeScript declarations (no local stub types)
 - **Service Types**: Type definitions for `example_interfaces/srv/AddTwoInts`
 - **Strict Type Checking**: Full TypeScript strict mode enabled
 - **Build Pipeline**: Automated compilation with shebang fixing for executable JavaScript
@@ -292,7 +292,7 @@ Modify the service callback to implement your own business logic:
    ```
    Type errors in service definitions
    ```
-   **Solution**: Check the type definitions in `types/rclnodejs.d.ts` match your usage.
+   **Solution**: Ensure the in-tree rclnodejs package is built so its TypeScript declarations are available.
 
 ### Debugging Tips
 

demo/typescript/services/tsconfig.json

@@ -1,8 +1,9 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
-    "module": "CommonJS",
-    "lib": ["ES2020"],
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "lib": ["ES2022"],
     "outDir": "./dist",
     "rootDir": "./src",
     "strict": true,
@@ -16,7 +17,7 @@
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "types": ["node"],
-    "typeRoots": ["./types", "./node_modules/@types"]
+    "typeRoots": ["./node_modules/@types"]
   },
   "include": [
     "src/**/*",

demo/typescript/topics/README.md

@@ -105,30 +105,21 @@ For development, you can run TypeScript files directly with ts-node:
 
 ## TypeScript Setup
 
-This demo includes a self-contained TypeScript configuration that allows compilation without requiring the full rclnodejs installation to be built first. The key components are:
-
-### Local Type Definitions
-
-The `types/rclnodejs.d.ts` file provides basic TypeScript declarations for rclnodejs, enabling:
-
-- ✅ TypeScript compilation without dependencies
-- ✅ Type checking and IntelliSense support
-- ✅ Proper interface definitions for common ROS2 operations
+This demo builds against the in-tree **rclnodejs** package
+(`"rclnodejs": "file:../../.."`), so it uses the package's own TypeScript
+declarations — there are no local stub types.
 
 ### TypeScript Configuration
 
 The `tsconfig.json` is configured to:
 
-- Use local type definitions from the `types/` directory
+- Use modern `NodeNext` module resolution, matching how Node.js resolves the
+  package's `exports` map
+- Target `ES2022`, consistent with the rclnodejs package itself
 - Compile TypeScript to JavaScript in the `dist/` directory
 - Generate source maps and declaration files
 - Enable strict type checking
 
-### Development vs Runtime
-
-- **Compilation**: Uses local type definitions (no rclnodejs dependency)
-- **Runtime**: Requires actual rclnodejs installation and ROS 2 environment
-
 ## Expected Output
 
 ### Publisher Output:

demo/typescript/topics/tsconfig.json

@@ -1,8 +1,8 @@
 {
   "compilerOptions": {
-    "module": "commonjs",
-    "moduleResolution": "node",
-    "target": "es2020",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "target": "es2022",
     "outDir": "./dist",
     "rootDir": "./src",
     "strict": true,
@@ -12,9 +12,8 @@
     "declaration": true,
     "declarationMap": true,
     "sourceMap": true,
-    "lib": ["es2020"],
+    "lib": ["es2022"],
     "typeRoots": [
-      "./types",
       "./node_modules/@types"
     ]
   },