@cathalmacdonnacha

Cathal Mac Donnacha

@cathalmacdonnacha

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

Ireland 🇮🇪Joined October 2021

Cathal Mac Donnacha's blogs

Everyday Frontend 🚀cathalmacdonnacha.com13 posts

Recently published

cathalmacdonnacha.com

Fixing Slow & Flaky Frontend Tests

After noticing a spike in failing Jest builds, I decided to investigate and found that slow and flaky tests were the main culprits. In this article, I go through some tips I discovered for making slow or flaky tests faster and more reliable. There ar...

Sep 8, 202510 min read

cathalmacdonnacha.com

Route-based code splitting with React

Code splitting is a technique used to optimize the loading performance of web apps by breaking down the bundled JavaScript files into smaller, more manageable chunks. By loading only the required code for a specific route or page, route-based code sp...

Aug 4, 20234 min read

cathalmacdonnacha.com

Mocking Error, Empty and Loading states with MSW

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 to do, but it's necessary in order to give your users the best experience possible. Thankfully, Moc...

Dec 6, 20227 min read

cathalmacdonnacha.com

Migrating from Create React App (CRA) to Vite

I recently migrated a production app within my company from create-react-app (CRA) to Vite, and the results have been great so far! In this article, I go through all the steps I took as part of the migration, in the hope that it might help others who...

Aug 22, 20227 min read

cathalmacdonnacha.com

Setting up ESLint & Prettier in ViteJS

I recently migrated from create-react-app (CRA) to ViteJS, and as part of that, I set up ESLint and Prettier. In this article, I go through all the steps I took. Let's get started! 1. Install dependencies We need to install the following dependencies...

Aug 11, 20224 min read

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Cathal Mac Donnacha

Cathal Mac Donnacha's blogs

Recently published

Fixing Slow & Flaky Frontend Tests

Route-based code splitting with React

Mocking Error, Empty and Loading states with MSW

Migrating from Create React App (CRA) to Vite

Setting up ESLint & Prettier in ViteJS