Category: ReactJS
-
Why Are My Cookies Mocked in Jest Not Updating Between Tests?
So, you’re working on a React+NextJS project and need to test whether a component is rendering correctly based on the values of cookies, using the cookies-next package for handling cookies. You’ve put together a Jest test suite to mock cookie values and assert that the output is as expected. However, you’ve run into a problem:…
-
How Can I Implement Multi-Conditional Filters in My React Marketplace App?
When creating a React application for filtering properties in a marketplace, you might find yourself struggling to implement filtering logic that can handle multiple conditions. Whether the user wants to filter by the type of property, type of operation (rent/sell), or price range, managing these filters efficiently can be challenging. In this blog post, we’ll…
-
Why is My SignalR `HubConnection` State Not Properly Updated in React?
If you’ve been working with React and SignalR, you might have come across an issue where it seems like your SignalR HubConnection state isn’t being updated correctly. Specifically, you may encounter a situation where you set up your connection state with useState, start the connection, and still find that your state is null. Let’s dissect…
-
How Can I Fix the Loop Typewriter Effect in My React Component to Correctly Cycle Through Words Without Errors?
Recently, while working on a project that required a typewriter effect for text animations within a React application, I encountered a few issues. The goal was to cycle through an array of words (“Business”, “Company”, “Startup”), displaying them one after the other in a loop. However, upon implementation, I noticed that after completing the initial…
-
How Can I Resolve the `Error: spawn EINVAL` Issue When Running `yarn install` on My Device?
Recently, I encountered a perplexing issue while working on my Node.js project stored within the automatarium directory. I attempted to run yarn install in the root directory of my repository as I usually do to install all project dependencies. While this command works seamlessly on other devices, on my specific device, it failed with a…
-
How Can I Correctly Implement Grouped/Multi-Level Axes in a D3 + React Heat Map?
Implementing a D3.js visualization in React, especially something complex like a heat map with multi-level group axes on opposite sides, is both fascinating and challenging. The issues you’ve faced, such as having separate day axes generated for each year, are common when trying to dynamically add axes based on grouped data in D3. Let’s step…
-
How Can I Automatically Bump Versions in My Project Using Conventional Commits?
In my regular development process, I’ve been following the conventional commits standard to ensure my commit messages are not only consistent but also useful in generating version numbers and changelogs. This helps in maintaining a systematic version control system which is crucial for trackability and understanding project evolution, especially when working in a team or…
-
How Do I Resolve the “Failed to Resolve Import ‘prop-types’ from …” Error in a TypeScript/React Project?
Recently, while refining my skills in TypeScript and React, I encountered an intriguing error that halted the development of my local webserver. Despite my familiarity with JavaScript, transitioning to TypeScript and React threw a few curveballs my way, particularly concerning module resolution and dependencies. The error in question popped up when I tried using prop-types…
-
How Can I Fix the “Cannot Set Headers After They Are Sent to the Client” Error in My React Application?
Recently, I encountered a frustrating error in my React application when I was trying to integrate it with a backend server using Express.js. Every time I submitted a form to add data to the backend, I encountered the error: “Cannot set headers after they are sent to the client.” This issue typically arises in Node.js…
-
Why is `location.state` null when navigating with React Router’s `Link` component?
Navigating through different components in a React application using the react-router-dom package allows for a smooth and dynamic user experience. In particular, passing state from one component to another during navigation can be extremely useful for carrying over data without the need for global state management tools or props drilling. However, it seems I’ve encountered…