- "Write tests. Not too many. Mostly integration."
- Integration tests strike a great balance on the trade-offs between confidence and speed/expense. This is why it's advisable to spend most (not all, mind you) of your effort there.
- biggest thing you can do to write more integration tests is to stop mocking so much stuff
- When you mock something you're removing all confidence in the integration between what you're testing and what's being mocked.
The MDN Web Docs Learning Area teaches fundamentals of modern web development, beginning with HTML, CSS, and JavaScript essentials. In feedback this year, readers asked for a more opinionated, structured ...
Let me start with this — this is by all means not a comparison of what should be your next choice for Front-End. It’s a small, relatively unsophisticated, comparison of three things: Performance, Size, and Lines of Code of pretty similar application.
Svelte is a radical new approach to building user interfaces. Whereas traditional frameworks like React and Vue do the bulk of their work in the browser, Svelte shifts that work into a compile step that happens when you build your app.
Reactive paradigm is a declarative way to manage changes in application status (versus traditional imperative programming), based on the concept of event streams.
There's been a lot of confusion, claims, and misinformation about Redux going around lately, and I want to help clear things up.Is Redux dead, dying, deprecated, or about to be replaced? No.
I’ve seen React misunderstood by smart people more often than any other JavaScript library. React is packed with ideas that were radical at the time of its introduction. This created an air of…
Building interactive sites can involve sending JavaScript to your users. Often, too much of it. Have you been on a mobile page that looked like it had loaded only to tap on a link or tried to scroll…
With the growing popularity of JavaScript frameworks such as React, Angular, and Vue, testing your client-side code is becoming even more vital. When it comes to test frameworks, there are two major…
Vue is a very popular JavaScript front-end framework, one that’s experiencing a huge amount of growth. It is simple, tiny (~24KB), and very performant. It feels different from all the other…
React is incredible because it allows you to build your UI using a declarative API. You tell React what you want the interface to look like, and it handles the rest. As users interact with the…
JS Bin is a tool for experimenting with web languages. In particular HTML, CSS and JavaScript, but JS Bin also supports other languages too (like Markdown, Jade and Sass).
gpu.js is a single-file JavaScript library for GPGPU in the browser. gpu.js will automatically compile specially written JavaScript functions into shader language and run them on the GPU using the WebGL API. In the case where WebGL is not available, the functions will still run in regular JavaScript.
You may already be familiar with the basic features of the Chrome Developer Tools: the DOM inspector, styles panel, and JavaScript console. But there are a number of lesser-known features that can…
Lately, I've been working on a new library called purescript-sdom. It is an attempt to build a UI library in 100% PureScript without using the virtual DOM. I'll give an overview of the motivation behind the library, and the way in which it was implemented.