To install TypeScript, you’ll need Node.js and npm (Node Package Manager) installed on your system. If you haven’t already installed them, you can download and install Node.js from the official website. npm comes bundled with Node.js.
Here are the steps to install TypeScript:
Step 1: Install Node.js and npm
- Go to Node.js download page and download the installer for your operating system.
- Once installed, open a terminal or command prompt and verify the installation by running
node -v
npm -v
These commands should output the version numbers of Node.js and npm respectively.
Step 2: Install TypeScript
- Open a terminal or command prompt.
- Run the following command to install TypeScript globally:
npm install -g typescript
The -g flag installs TypeScript globally, making it available from any location on your system.
Step 3: Verify the Installation
After the installation is complete, verify it by checking the TypeScript version.
tsc -v
This command should output the version number of the TypeScript compiler (tsc).
Run the code into the typescript file
create the app.ts file and put the code into it.
console.log("Hello World");
Compile the TypeScript file to JavaScript:
tsc app.ts
This command generates an app.js file from your app.ts file.
Run the compiled JavaScript file:
node app.js
now, it will show Hello World
How to install Typescript? – Interview Questions
Q 1: How do you install TypeScript?
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" Using npm:
npm install -g typescript") .
"Q 2: How to check TypeScript version?
Q 3: What is tsc?
Q 4: Is Node.js required for TypeScript?
Q 5: Can TypeScript be installed locally?
How to install Typescript? – Objective Questions (MCQs)
Q1. Which command installs TypeScript globally?
Q2. After installation, which command checks the TypeScript version?
Q3. What must be installed before installing TypeScript?
Q4. To compile a TypeScript file, you use:
Q5. Which directory is created after TypeScript is installed globally?