Here I’ll tell you about how to get a test coverage metric for an application where you use Jest for unit tests. I’m joining a new project where a lot of code and tests. I found there is no too much information about how much tests are written and how well they cover the project. Let’s change that. I found, it’s super easy to add coverage information with adding the following group of configurations in jest.config.js file

Here I’m going to tell how I did integration with percy.io I just had setup StoryBook for my new React application. Now I should figure out how to use Persy.io over StoryBook to provide visual testing. First of all I need to create a new project on Persy.io

I’m joining to a new project. I never did an installation of StoryBook myself. It’s time to check how difficult it can be, when you do it for an existing project. I have visited Quick Start guide I had to try npx -p @storybook/cli sb init I’ve got

Недавно у нас тут в руби чате подняли вопрос о том, что для вас является решающим фактором для выбора места работы. Хочется высказаться.

Snapshot testing gave us a cheap and fast testing solution at the beginning. What happened next? When we started a project we needed to have a fast and cheap way to keep our React components under control. We have started to use Snapshots like that.

In our current project we have some core hooks (self-made React hooks, I mean). Implementation should not touch us at this article. Everything what we should know a file with hooks is accessible by using a path alias @core/hooks Usually we use hooks like that import { useViewerType } from…

I’ve just started a migration to TypeScript. I see many unknown and not obvious linter’s messages everyday. Not always I know how to manage them. One of the messages is: Type instantiation is excessively deep and possibly infinite.ts(2589) Visual Studio Code IDE displays it to me for a component. The…

Подготовленно спецаильно для питерского сообщества Saint P Ruby Community https://t.me/saintprug В предыдущем посте мы узнали, что такое проверка на владение и о ее важности для системы распределения прав. Узнали об ACL и реализовали простейшую ролевую систему для нашего простейшего проекта. В этой части вы узнаете о способах хранения ACL, особенностях…

Подготовленно спецаильно для питерского сообщества Saint P Ruby Community https://t.me/saintprug Тварь ли я дрожащая или право имею? Именно на этот вопрос, который мучит так много web разработчиков сегодня я попытаюсь ответить. Ну, как ответить. …