TypeScript Setup

Setting up TypeScript involves installing it and configuring the environment to compile and run TypeScript files efficiently.

 

Prerequisites

• Node.js Installed: Ensure Node.js is installed on your system.
• Code Editor: Use an editor like VS Code for better TypeScript support.

 

Steps to Install TypeScript

Install TypeScript via npm
Run the following command to install TypeScript globally:

npm install -g typescript  

Verify the installation:

tsc --version  

Initialize a TypeScript Project
Create a tsconfig.json file using:

tsc --init  

This file contains configuration options for TypeScript.

Write Your First TypeScript File
Create a file named app.ts and add some TypeScript code:

const greet = (name: string): string => {  
  return `Hello, ${name}`;  
};  
console.log(greet("TypeScript"));  

Compile TypeScript to JavaScript
Compile the file using:

tsc app.ts  

This generates a corresponding JavaScript file (app.js).

Run the Compiled JavaScript File
Execute the file with Node.js:

node app.js  

 

Summary

Setting up TypeScript involves installing it via npm, creating a project configuration, and compiling .ts files into JavaScript. This streamlined setup enables efficient development with TypeScript.