React Digest - RD#495 Functional programming in React

Functional programming in React
14 minutes by Flavien Beninca

Learn how functional programming principles power React development. This practical guide explores first-class functions, pure functions, immutability, currying and composition with clear examples. Discover how these concepts lead to more predictable, testable and maintainable React applications.

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Avoiding Server Component Waterfall Fetching with React 19 cache()
7 minutes by Aurora Scharff

This article explains how to use React 19's new cache() API in Next.js App Router to optimize data fetching and improve performance. The API enables per-render caching of data fetches, helping reduce data coupling between components and avoid duplicate fetches.

Migrating from Create React App to Vite: A Modern Approach
4 minutes by Adhithi Ravichandran

Create React App was deprecated last week so it's time to move on. In this guide, Adhithi walks through how to migrate your existing CRA project to Vite in just a few simple steps.

How to improved INP on a Next.js application
25 minutes by Stefano Magni

This article describes how Preply improved their Interaction to Next Paint (INP) metric on their two most important pages. The team implemented various optimizations including React 18 upgrade, virtualizing long lists, debouncing keyboard events, memoizing heavy components, and fixing state management issues.

How to Download a file from a React Router route
5 minutes by Sergio Xalambrí

Let's say you need to dynamically generate a file, like an XML, CSV or PDF, how could you trigger a download? There are two ways to do it. The simplest way using a loader. The not so simple way using an action. Let's look at both of them.

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