mkdir typescript-node
cd typescript-node
npm init -y

npm i -D typescript ts-node @tsconfig/node16 nodemon

npx tsc --init

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Node 16",
  "extends": "@tsconfig/node16/tsconfig.json" /* ใช้ node 16 config */,

  "compilerOptions": {
    "lib": ["es2021"] /* กำหนดว่าตอนเขียนด้วย js version อะไร */,
    "module": "commonjs" /* กำหนดว่าจะใช้ module แบบไหน commonjs หรือ esm*/,
    "target": "es2021" /* กำหนดว่าให้ complie เป็น js version อะไร */,

    "outDir": "./dist" /* ระบุโฟลเดอร์ output (JavaScript) */,
    "rootDir": "./src" /* ระบุโฟลเดอร์ sourcecode (TypeScript) */,

    "strict": true /* เปิดใช้ strict type-checking options*/,
    "esModuleInterop": true /* อนุญาติให้ complie ES module เป็น commonjs*/,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "moduleResolution": "node"
  }
}

"scripts": {
  "dev": "nodemon",
  "build": "tsc --project ./"
  "prod": "npm run build && node dist/index.js"
},

{
  "watch": ["src"],
  "ext": "ts",
  "ignore": ["src/**/*.spec.ts"],
  "exec": "ts-node ./src/index.ts"
}

const geeting = (name: string) => {
  console.log(`Hello ${name} from TypeScript.`)
}

geeting('Ball')

> typescript-node@1.0.0 dev D:\workspaces\playgounds\typescript-node
> nodemon

[nodemon] 2.0.7
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): src\**\*
[nodemon] watching extensions: ts
[nodemon] starting `ts-node ./src/index.ts`
Hello Ball from TypeScript.
[nodemon] clean exit - waiting for changes before restart

[nodemon] restarting due to changes...
[nodemon] starting `ts-node ./src/index.ts`
Hello Stamp from TypeScript.
[nodemon] clean exit - waiting for changes before restart

// dist/index.js
'use strict'
const geeting = (name) => {
  console.log(`Hello ${name} from TypeScript.`)
}
geeting('Stamp')

import express from 'express'

const app = express()

const PORT = 8000

app.get('/', (req, res) => res.send('Express + TypeScript Server'))

app.listen(PORT, () => {
  console.log(`Server is running at http://localhost:${PORT}`)
})

npm i -D @types/node @types/express

npm run dev

> typescript-node@1.0.0 dev D:\workspaces\playgounds\typescript-node
> nodemon

[nodemon] 2.0.7
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): src\**\*
[nodemon] watching extensions: ts
[nodemon] starting `ts-node ./src/index.ts`
Server is running at http://localhost:8000

import express, { Application, Request, Response } from 'express'

const app: Application = express()

const PORT: number = 8000

app.get('/', (req: Request, res: Response) => {
  res.send('Express + TypeScript Server')
})

app.listen(PORT, () => {
  console.log(`Server is running at http://localhost:${PORT}`)
})

npm install eslint @typescript-eslint/parser @typescript-eslint/eslint-plugin --save-dev

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 'latest', // Allows the use of modern ECMAScript features
    sourceType: 'module', // Allows for the use of imports
  },
  plugins: ['@typescript-eslint'],
  env: {
    node: true, // Enable Node.js global variables
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended', // Uses the linting rules from @typescript-eslint/eslint-plugin
  ],
  rules: {
    // https://eslint.org/docs/latest/rules/
    'no-console': 1, // Means warning
  },
}

node_modules
dist

"scripts": {
  "dev": "nodemon",
  "build": "tsc --project ./"
  "prod": "npm run build && node dist/index.js"
+ "lint": "eslint . --fix"
},

npm install --save-dev eslint-config-prettier eslint-plugin-prettier

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 'latest', // Allows the use of modern ECMAScript features
    sourceType: 'module', // Allows for the use of imports
  },
  plugins: [
		'@typescript-eslint',
+   'prettier'
  ],
  env: {
    node: true, // Enable Node.js global variables
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended', // Uses the linting rules from @typescript-eslint/eslint-plugin
+   'plugin:prettier/recommended',
  ],
  rules: {
    'no-console': 1, // Means warning
+   'prettier/prettier': [
+     'error',
+     {
+       singleQuote: true,
+       parser: 'flow',
+     },
    ],
  },
};

{
  "useTabs": false,
  "tabWidth": 2,
  "singleQuote": true,
  "printWidth": 120,
  "trailingComma": "es5"
}

{
  "eslint.validate": ["javascript", "javascriptreact", "typescript", "typescriptreact"],
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "editor.formatOnPaste": true,
  "editor.formatOnSave": true,
  "editor.codeActionsOnPaste": {
    "source.fixAll.eslint": true
  },
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": true
  }
}