Tech with Cathal 🚀

Cathal Mac Donnacha

Cathal Mac Donnacha

9.2K followers

Follow me on my journey as I write about real tech topics I face in my everyday life as a Frontend Developer.

Route-based code splitting with React

Aug 4, 20234 min read

Code splitting is a technique used to optimize the loading performance of web apps by breaking down the bundled JavaScript files into smaller, more...

Route-based code splitting with React

Mocking Error, Empty and Loading states with MSW

Dec 6, 20227 min read

One of the less exciting things about being a Frontend Developer is having to handle error, empty and loading states. It may not be the most fun thing...

Mocking Error, Empty and Loading states with MSW

Migrating from Create React App (CRA) to Vite

Aug 22, 20227 min read

Learn how to migrate your CRA app over to Vite. · I recently migrated a production app within my company from create-react-app (CRA) to Vite, and the...

Migrating from Create React App (CRA) to Vite

Setting up ESLint & Prettier in ViteJS

Aug 11, 20224 min read

Learn how to set up ESLint & Prettier in your ViteJS project. · I recently migrated from create-react-app (CRA) to ViteJS, and as part of that, I set up...

Setting up ESLint & Prettier in ViteJS

Migrating from Jest to Vitest

May 25, 20224 min read

I recently migrated from create-react-app (CRA) to ViteJS, and as part of that, I switched my test runner from Jest to Vitest. In this article, I go...

Migrating from Jest to Vitest

Playwright E2E testing: Tips and best practices

Mar 23, 20223 min read

Learn some tips and best practices to give your E2E Playwright tests a boost. · I've been using Playwright for a couple of months now, and though I'm...

Playwright E2E testing: Tips and best practices