TypeScript Compiler Installation and Setup - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the command to install the TypeScript compiler globally using npm?

The command is npm install -g typescript. This installs the TypeScript compiler so you can use the tsc command anywhere on your computer.

beginner

What does the tsc command do?

The tsc command runs the TypeScript compiler. It converts TypeScript files (.ts) into JavaScript files (.js) that browsers can understand.

beginner

Why do we need to install Node.js before installing TypeScript?

Node.js provides the npm tool, which is used to install TypeScript and other packages. Without Node.js, you cannot use npm to install the TypeScript compiler.

intermediate

What is the purpose of the tsconfig.json file in a TypeScript project?

The tsconfig.json file tells the TypeScript compiler how to compile your project. It sets options like which files to include, the JavaScript version to output, and other settings.

beginner

How can you check if TypeScript is installed correctly on your system?

Run the command tsc --version in your terminal or command prompt. If it shows a version number, TypeScript is installed correctly.

Which command installs TypeScript globally on your computer?

A npm install typescript

B node install typescript

C tsc install

D npm install -g typescript

The correct command is npm install -g typescript to install TypeScript globally.

What file extension does TypeScript use for its source files?

A .ts

B .js

C .tsx

D .json

TypeScript source files use the .ts extension.

What is the main purpose of the TypeScript compiler?

A To run JavaScript code

B To convert JavaScript to TypeScript

C To convert TypeScript to JavaScript

D To install Node.js

The TypeScript compiler converts TypeScript code into JavaScript code.

Before installing TypeScript, which software must be installed first?

A Python

B Node.js

C Java

D Git

Node.js must be installed first because it provides npm, which installs TypeScript.

What command checks the installed TypeScript version?

A tsc --version

B npm version typescript

C node --version

D tsc check

Use tsc --version to check the installed TypeScript version.

Explain the steps to install and verify the TypeScript compiler on your computer.

Think about what tools you need and how to check if TypeScript is ready to use.

Describe the role of the tsconfig.json file in a TypeScript project setup.

It's like a settings file for the TypeScript compiler.