Welcome to this comprehensive guide on how to install TypeScript on AlmaLinux 9. TypeScript, a statically-typed superset of JavaScript, offers optional static typing, classes, interfaces, and other delightful features to standard JavaScript. This makes it an excellent tool for improving the productivity and the code quality of large-scale JavaScript applications.

Prerequisites

Before we begin, ensure that your server setup meets the following requirements:

• Your server is running AlmaLinux 9.
• A fresh OS install is recommended to avoid potential issues.
• You have SSH access to the server (or simply open Terminal if you’re on a desktop environment).
• An active internet connection for downloading the necessary packages and dependencies for TypeScript.
• You have superuser or sudo privileges to grant the necessary permissions for TypeScript.

Update the System

The first step involves updating your system packages to their latest versions. This is critical as it ensures that you have the latest security patches and system improvements. Run the following commands:

sudo dnf clean all
sudo dnf update

Installing Node.js

Node.js is readily available in the AlmaLinux 9 base repository. To install it, execute the following command:

sudo dnf install nodejs

To confirm successful installation of Node.js and NPM (Node Package Manager), use these commands:

node --version
npm --version

Installing TypeScript

Follow the steps below to install TypeScript globally using npm. This will make TypeScript available for use across your entire system:

npm install -g typescript

Verifying TypeScript Installation

To ensure TypeScript is correctly installed, check its version using the following command:

tsc --version

This will display the installed version of TypeScript.

Configuring TypeScript

Upon successful installation of TypeScript, you need to create a tsconfig.json file. This file specifies the root files and the compiler options needed to compile your TypeScript project. Use this command to create a basic tsconfig.json file:

tsc --init

Testing the Installation

To test the TypeScript installation and configuration, create a simple TypeScript file named main.ts:

let message: string = "Hello World";
console.log({message});

Compile the file with tsc:

tsc main.ts

This should create a main.js JavaScript file, which you can execute with Node:

node main.js

If you see “Hello World” printed, it verifies that TypeScript is working as expected.

Congratulations! You’ve successfully installed and configured TypeScript on your AlmaLinux 9 system. For additional support or information, we suggest you visit the official TypeScript website.

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Christian Wells