Get Started with TypeScript #

TypeScript is JavaScript with types, improved syntax, and better tooling.

Possible Setups: #

• Basic setup: using the default tool
• Better setup (recommended): using the modern tool that is better and more efficient

Basic Setup #

TypeScript can be installed from: https://www.typescriptlang.org/download/

Once installed, you can check the version:

tsc --version

1. Project Initialization #

Initialize a project:

tsc --init

This creates a tsconfig.json file for configuration.

2. Running a TypeScript File #

Create a main.ts file with the code:

console.log("Hello World");

Run the file:

# transpile ts into js
tsc # or tsc main.ts

# run the transpiled code
node main.js

When getting back to a project #

# transpile
tsc

# run
node main.js

Better Setup #

Instead of using the default TypeScript tsc, you can use tsx

tsx can be installed from: https://tsx.is/getting-started

Once installed, you can check the version:

tsx --version

1. Project Initialization #

Initializing and creating a tsconfig.json file is optional.

2. Running a TypeScript File #

Create a main.ts file with the code:

console.log("Hello World");

Run the file:

tsx main.ts

When getting back to a project #

tsx main.ts