TypeScript Node.js Hello World This is a simple example to set up a Node.js project with TypeScript.

Prerequisites Node.js installed

TypeScript installed globally:

npm install -g typescript Visual Studio Code installed

Steps Install Node.js from nodejs.org

Install TypeScript globally using npm:

npm install -g typescript Install Visual Studio Code from code.visualstudio.com

Read about generating tsconfig.json from here

Read a tutorial on TypeScript Hello World from here

Generate tsconfig.json by running:

tsc --init If you're using Windows Powershell and encounter issues running tsc, open Powershell in Administrator mode and run:

Set-ExecutionPolicy RemoteSigned Make it a Node.js project by running:

npm init -y Install types for Node.js:

npm i @types/node -D Create a .gitignore file to ignore unnecessary files:

Copy code node_modules/ dist/ Create a TypeScript file (e.g., app.ts) and add the following code:

typescript Copy code const message: string = "Hello World"; console.log(message); Transpile TypeScript to JavaScript by running:

tsc Run the transpiled JavaScript by running:

node app Additional Resources TypeScript Documentation Visual Studio Code TypeScript Documentation