BirolAYDIN / TypeScriptSetupWithNodeJS_Express

TypeScript Setup With Node & Express Server Example

TypeScript Setup With Node & Express Server Example

Let's load TypeScript globally first

   npm i -g typescript@next   // latest version published daily

You can try to make sure typescript is loaded

  tsc --version

Let's create source folder and work file

  src/app.ts

For the TypeScript configuration file

  tsc --init     // tsconfig.json file

TypeScript configuration file can be used briefly as in the repo or according to your request

• You can output javascript to TypeScript file with tsc command.

   tsc   //  app.ts ---> app.js

Let's create the package.json file

  npm init -y

We install npm i express with express

  npm i express

For other addictions

  npm i -D typescript ts-node nodemon @types/node @types/express

Edit package.json file scripts

   "scripts": {
		"start": "node dist/app.js",
		"dev": "nodemon src/app.ts",
		"build": "tsc -p ."
  }

The app.ts file is prepared

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

const app:Application = express();

app.get('/', (req: Request, res: Response, next: NextFunction) => {
	res.send('Hello world');
});


app.listen(5000, () => console.log('Server running'));

Use the command below to test

   npm run dev 

To get build and run

  npm run build