Running Typescript Express with Bun

If you’re a web developer, you probably already know about Express.js, the popular web application framework for Node.js. But did you know that you can run Express with Typescript and Bundle files using Bun?

What is Typescript?

Typescript is a superset of Javascript that adds static type definitions to the language. This can help catch errors early in the development process and improve code maintainability. Many developers have embraced Typescript for these reasons.

What is Express?

Express is a web application framework for Node.js that provides a robust set of features for building web and mobile applications. It’s minimalistic and flexible, making it a popular choice for developers.

What is Bun?

Bun is a bundler for Node.js that helps manage and optimize your application’s dependencies. It can be used to bundle files and modules for easy deployment.

Running Typescript Express with Bun

To run Typescript Express with Bun, you’ll need to install the necessary dependencies:


$ npm install express typescript bun


Next, you’ll need to set up your project to use Typescript. This can be done by creating a tsconfig.json file in the root of your project with the following contents:


{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"outDir": "dist",
"strict": true,
"esModuleInterop": true
}
}


Then, you can create an app.ts file with your Express app code, and import it into a server.ts file where you can compile and run it:


import express from 'express';
const app = express();

app.get('/', (req, res) => {
res.send('Hello World!')
});

app.listen(3000, () => {
console.log('Server is running on port 3000');
});


Lastly, you can use Bun to bundle your Typescript files for deployment:


$ bun app.ts -o dist/bundle.js


And that’s it! You can now run your Typescript Express app using Bun for bundling and optimization.

Conclusion

In this article, we’ve learned about running Typescript Express with Bun. By combining these technologies, you can take advantage of the benefits of Typescript and Express while using Bun to bundle and optimize your application for deployment. Give it a try and see how it can improve your web development workflow!