How to Handle Uncaught Exceptions and Rejections in Node.js

🚀 Creating a Simple HTTP Server with Node.js Creating an HTTP server is a fundamental skill in Node.js development. The `http` module allows you to create a server that listens for incoming requests and sends back responses. This demonstrates the core functionality of Node.js as a backend server. Understanding how to handle requests and responses is essential for building web applications and APIs. #NodeJS #Backend #JavaScript #APIs #professional #career #development

🚨 React developers, are you STILL making this mistake? Most bugs in toggles and boolean states come from one simple issue: ✅ React batches state updates. ❌ So calling setState(!state) twice won’t toggle twice — it uses the same stale value. The fix? Always use the functional state updater: setState(prev => !prev) It guarantees you’re working with the most up-to-date value, even during batched renders. Small change, HUGE improvement in reliability and UI behavior. ⚡ #ReactJS #JavaScript #Frontend #WebDevelopment #CleanCode #ReactDeveloper #TypeScript #CodingTips #Performance #SoftwareEngineering #TechTips

🚨 React developers, are you STILL making this mistake? Most bugs in toggles and boolean states come from one simple issue: ✅ React batches state updates. ❌ So calling setState(!state) twice won’t toggle twice — it uses the same stale value. The fix? Always use the functional state updater: setState(prev => !prev) It guarantees you’re working with the most up-to-date value, even during batched renders. Small change, HUGE improvement in reliability and UI behavior. ⚡ #ReactJS #JavaScript #Frontend #WebDevelopment #CleanCode #ReactDeveloper #TypeScript #CodingTips #Performance #SoftwareEngineering #TechTips

I’ve seen this mistake countless times (and made it myself early on 😅). It’s such a small change, but it makes your toggles and UI far more reliable — especially in complex components or when multiple state updates happen at once. React is smart about batching, but you have to be smarter about how you update state. 

💡React Tip💡 Most beginner React developers make this mistake while understanding the custom hooks. When using a particular custom hook in multiple components, you might think that each component will refer to the same data returned from that hook like this: const [show, toggle] = useToggle(); However, this is not the case. Each component using that hook will have a separate instance of the hook. As a result, all the states, event handlers, and other data declared in that custom hook will be different for each component using that hook. So If you need to use the same data and event handlers for all the components, you need to import the custom hook at only one place in the parent component of both of these components. Then, you can pass the data returned by the custom hook as a prop or using context to those specific components. So never make the mistake of using the same custom hook in different components assuming changing hook data from one component will be automatically updated in another component also. 𝗖𝗵𝗲𝗰𝗸 𝗼𝘂𝘁 𝘁𝗵𝗲 𝗖𝗼𝗱𝗲𝘀𝗮𝗻𝗱𝗯𝗼𝘅 𝗹𝗶𝗻𝗸 𝗶𝗻 𝘁𝗵𝗲 𝗰𝗼𝗺𝗺𝗲𝗻𝘁 𝘁𝗼 𝘀𝗲𝗲 𝗶𝘁 𝗶𝗻 𝗮𝗰𝘁𝗶𝗼𝗻. 𝘍𝘰𝘳 𝘮𝘰𝘳𝘦 𝘴𝘶𝘤𝘩 𝘶𝘴𝘦𝘧𝘶𝘭 𝘤𝘰𝘯𝘵𝘦𝘯𝘵, 𝘥𝘰𝘯'𝘵 𝘧𝘰𝘳𝘨𝘦𝘵 𝘵𝘰 𝘧𝘰𝘭𝘭𝘰𝘸 𝘮𝘦. #javascript #reactjs #nextjs #webdevelopment

🚀 Asynchronous File System Operations in Node.js File system operations in Node.js, such as reading and writing files, are asynchronous by default. This prevents blocking the event loop and allows the application to remain responsive. The `fs` module provides asynchronous functions like `readFile`, `writeFile`, and `readdir`, which can be used with callbacks, promises, or async/await. Asynchronous file system operations are essential for building applications that handle large files or perform frequent file access. #NodeJS #Backend #JavaScript #APIs #professional #career #development

🚀 Reading Files Asynchronously with Callbacks in Node.js The `fs.readFile` function is a cornerstone of asynchronous file reading in Node.js. It takes a file path, an optional encoding, and a callback function as arguments. The callback function is invoked once the file data is read or an error occurs. This allows the Node.js event loop to remain unblocked, enabling the server to handle multiple requests concurrently. Proper error handling within the callback is essential to prevent unhandled exceptions and ensure application stability. Understanding this asynchronous pattern is fundamental to Node.js development. #NodeJS #Backend #JavaScript #APIs #professional #career #development

🚀 Accessing the `process` Object for Environment Variables (Node.js) The `process` object provides information about the current Node.js process, including environment variables, command-line arguments, and more. Accessing environment variables using `process.env` is crucial for configuring applications based on the deployment environment. This allows you to set different configurations for development, testing, and production environments. Learn more on our website: https://techielearns.com #NodeJS #Backend #JavaScript #APIs #professional #career #development