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Write Parameterized Tests In Jest
Unit tests are crucial - they help to confirm that the individual parts of applications work as intended. On the one hand, without them you are never sure that everything works correctly, whether after refactoring or adding a new feature. On the other hand...Read more
React Antipatterns: Code Duplication
Let's clarify one thing before we start - code duplication is not necessarily a bad thing. In some cases, it's much better to duplicate code than to create a reusable component that accepts tons of props for handling all edge cases because it's very likely to...Read more
Post A Tweet Using Twitter API
Growing a business requires a lot of effort, including working on social media to attract attention and promote your product to end users. Therefore, it is necessary to automate as much as possible so that you do not have to spend all your time...Read more
Difference Between "git add -A", "git add ." and "git add -u"
The most basic task any developer has when working with Git on a daily basis is adding files to be committed. Probably the vast majority of us use **git add -A** without knowing exactly what is going on behind the scenes when we use the **\-A** flag, and whether there are no other...Read more
Create Custom Middleware In Redux
Redux is one of the most popular state management libraries available for React applications. It provides us with the store that contains the entire state of the application, actions that describe what happens in the application, and reducers that create a new state object from the...Read more
Type Guards In TypeScript
If you work with Typescript of a regular basis, you know that it provides developers with a large feature list that is frequently updated with new stuff. One of the things from that list that you may have been using for years without realizing it are Type Guards...Read more
React Antipatterns: Index As A Key
In modern web applications, lists are everywhere and knowing how to render them properly is one of the first things every developer should learn. Transforming lists into React elements is typically done using the map() method. It runs on an array of...Read more
React Antipatterns: Props In Initial State
In React, props and state are everywhere - they allow us to pass information between components and manage the output of the component over time in response to various actions. Using them separately is perfectly fine, but in some cases they are...Read more
React Antipatterns: Props Spreading
Most of the time we learn how to write code, we memorize best practices, design patterns, clean code principles, and that's perfectly fine, but learning how not to write code is no less important. Antipatterns, just like patterns, have been around for...Read more