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Continuous Integration (CI) and Continuous Deployment (CD) are crucial development practices, especially for teams. Every project is prone to error, regardless of the size. But when there is a CI/CD process set up with well-written tests, those errors are a …

Guillermo:

I want to make the case that prioritizing end-to-end (E2E) testing for the critical parts of your app will reduce risk and give you the best return. Further, I’ll show how you can adopt this methodology in mere

There’s been news about Chrome freezing their User-Agent string (and all other major browsers are on board). That means they’ll still have a User-Agent (UA) string (that comes across in headers and is available in JavaScript as navigator.userAgent. By …

Amy Kapernick covers four types of testing that front-end devs could and should be doing:

1. Linting (There’s ESLint for JavaScript and Stylelint and/or Prettier for CSS.)
2. Accessibility Testing (Amy recommends pa11y, and we’ve covered Axe.)
3. Visual Regression Testing

As you begin to make use of React hooks in your applications, you’ll want to be certain the code you write is nothing short of solid. There’s nothing like shipping buggy code. One way to be certain your code is …

Nice post from Thomas Ladd about how their front-end team does testing. The list feels like a nice place to be:

1. TypeScript – A language, but you’re essentially getting various testing for free (passing the right arguments and types of

I wanted to make sure you understand exactly what Percy can do for you, hence the title. When you commit a change to your websites Git repo, like in a Pull Request workflow most of us live in, Percy will …

WebPageTest is an online tool and an Open Source project to help developers audit the performance of their websites. As a Web Performance Evangelist at Theodo, I use it every single day. I am constantly amazed at what it …

Testing applications is crucially important to ensuring that the code is error-free and the logic requirements are met. However, writing tests manually is tedious and prone to human bias and error. Furthermore, maintenance can be a nightmare, especially when features …