When your NODE_ENV environment variable is misconfigured, it can cause API calls to point to wrong endpoints, use incorrect credentials, or apply improper request/response handling. Here’s how to diagnose and….
Absolute Imports Configuration Issues in React When absolute imports are misconfigured in a React application, it can lead to broken builds, module resolution errors, and development/production inconsistencies. Here’s how to….
Serving React App with Incorrect publicPath Issues When your React app’s publicPath is misconfigured, you’ll encounter problems with asset loading, routing, and general functionality. Here’s how to identify and fix….
Forgetting to Set Homepage in package.json for Static Hosting When deploying a React app (or similar frontend project) to static hosting services like GitHub Pages, Netlify, or Vercel, forgetting to….
Inline styles in React (or other frameworks) can impact performance and re-renders differently than CSS classes. Here’s what you need to know: Key Differences When Inline Styles Trigger Re-renders Better….
Not using shouldComponentUpdate in class components is a common mistake in React class-based components, especially when performance optimization is needed. The shouldComponentUpdate lifecycle method is used to prevent unnecessary re-renders….
Optimizing useEffect Dependencies A common React performance pitfall is including unnecessary dependencies in the useEffect dependency array, which can lead to excessive re-renders, infinite loops, or stale closures. The Problem:….
Preventing Unnecessary Re-renders from New Object References A subtle but common performance issue in React occurs when passing new object references as props, which can trigger unnecessary re-renders of child….
Optimizing State Changes to Prevent Unnecessary Re-renders A common React performance issue occurs when state changes trigger more component re-renders than necessary, leading to degraded application performance. The Problem: Excessive….
Optimizing Image Loading for Web Performance Poorly optimized images are one of the most common performance bottlenecks in modern web applications, often accounting for the majority of page weight and….
