June 04, 2021

TypeScript with Node.js

Getting started with TypeScript with Node.

I use

1yarn

as my package manager so the following code says the same.
If you're using

1npm

, just replace

1yarn add

with

1npm install

.

1. Initialize package.json by
   

   1yarn init -y

2. Add TypeScript as a Developer Dependency

   1yarn add -D typescript

3. Now, initialize tsconfig.json file.

   1npx tsc --init

   
   Here, tsc refers to TypeScript compiler For testing.
4. Create src/index.ts and put in a console.log();

5. 1yarn add -D ts-node-dev

6. add script in package.json:

   1"start": "ts-node-dev --respawn src/index.ts"

   
   Alternatively

7. 1yarn add -g nodemon

8. add script in package.json:

   1"start": "nodemon --exec src/index.ts"

9. To add typescript definition:

   1yarn add -D @types/packageName