Update devDependencies and improve TypeScript config for Node 22

[paulyuk]

Summary

Update TypeScript template devDependencies to match Node.js 22 runtime and modernize TypeScript configuration.

Current State

package.json:

{
  "main": "dist/src/functions/*.js",
  "devDependencies": {
    "azure-functions-core-tools": "^4.x",
    "@types/node": "18.x",
    "typescript": "^4.0.0",
    "rimraf": "^5.0.0"
  }
}

tsconfig.json:

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es6"
  }
}

Proposed Changes

package.json:

{
  "main": "dist/src/{index.js,functions/*.js}",
  "devDependencies": {
    "azure-functions-core-tools": "^4.x",
    "@types/node": "^22.x",
    "typescript": "^5.0.0",
    "rimraf": "^5.0.0"
  }
}

tsconfig.json:

{
  "compilerOptions": {
    "module": "Node16",
    "target": "ES2022",
    "moduleResolution": "Node16",
    "outDir": "dist",
    "rootDir": ".",
    "sourceMap": true,
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true
  }
}

Why These Changes?

Change	Reason
@types/node 18→22	Type definitions should match runtime version
typescript 4→5	Latest stable with better performance
target: ES2022	Node 22 supports ES2022 features natively
module: Node16	Better ESM/CJS interop for modern Node.js
main glob pattern	Include index.js for functions registered there

Testing Checklist

• npm install succeeds
• npm run build compiles without errors
• func start discovers all functions
• azd up deploys successfully
• All HTTP endpoints respond correctly

Reference

• Node.js 22 ES Modules
• TypeScript Module Resolution