Feature Flags in Next.js: The Complete Guide (App Router)
The article explains how to implement feature flags in Next.js applications using the App Router, emphasizing the importance of consistent flag evaluation across server, client, edge, and API environments. It details where and how to use feature flags for optimal performance, including server-side rendering, middleware, and client interactions. The guide uses the Rollgate SDK as an example to demonstrate setup and usage across different parts of a Next.js app.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 2672712) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Domenico Giordano Posted on May 1 • Originally published at rollgate.io Feature Flags in Next.js: The Complete Guide (App Router) #featureflags #nextjs #react #tutorial This was originally published on rollgate.io/blog/feature-flags-nextjs. Why Feature Flags in Next.js? Next.js is not a typical React app. With the App Router, your code runs in multiple environments — the server, the edge, and the browser — sometimes in the same request.
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