Isolate all TS stuff in hello package

hello/package.json

@@ -2,6 +2,7 @@
   "name": "@capire/hello-world",
   "version": "1.0.0",
   "scripts": {
+    "test": "npx jest --silent",
     "watch": "cds serve world.cds",
     "watch:ts": "cds-ts serve world.cds"
   },

hello/test/hello-world-ts.test.ts

@@ -2,7 +2,7 @@ process.env.CDS_TYPESCRIPT = 'true';
 import * as cds from '@sap/cds';
 
 //@ts-ignore
-const {GET} = cds.test.in(__dirname,'../hello').run('serve', 'world.cds');
+const {GET} = cds.test.in(__dirname,'..').run('serve', 'world.cds');
 
 describe('Hello world!', () => {
     afterAll(() => { delete process.env.CDS_TYPESCRIPT; });

package.json

@@ -30,7 +30,12 @@
     "media": "cds watch media",
     "mocha": "npx mocha || echo",
     "jest": "npx jest",
-    "test": "npm run jest --silent"
+    "test": "npm run jest --silent && npm run test:hello",
+    "test:hello": "cd hello && npm test"
+  },
+  "jest": {
+    "testEnvironment": "node",
+    "testMatch": ["**/*.test.js"]
   },
   "mocha": {
     "parallel": true

samples.md

@@ -7,6 +7,7 @@ Each sub directory essentially is an individual npm package arranged in an [all-
 ## [@capire/hello-world](hello)
 
 - A simplistic [Hello World](https://cap.cloud.sap/docs/get-started/hello-world) service using [CDS](https://cap.cloud.sap/docs/cds/) and [cds.services](https://cap.cloud.sap/docs/node.js/api#services-api).
+- [Typescript support](https://cap.cloud.sap/docs/get-started/using-typescript)
 
 
 ## [@capire/bookshop](bookshop)