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I noticed while looking at the profiler the other day that all of our pages were rendering twice on initial load. Then saw that _app component was doing the same. Going backwards, I saw that rewrites in config were causing this. I was able to observe the same behavior on a brand new project, https://github.com/ardaerzin/nextjs-rewrite-test, I created with npx create-next-app. The moment I add rewrites, _app starts rendering twice.
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why-did-you-render
why-did-you-render by Welldone Software monkey patches React to notify you about potentially avoidable re-renders. (Works with React Native as well.)
Only on Build process or on the actual page ? And do you check rendering with https://github.com/welldone-software/why-did-you-render
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Appwrite
Appwrite - The Open Source Firebase alternative introduces iOS support . Appwrite is an open source backend server that helps you build native iOS applications much faster with realtime APIs for authentication, databases, files storage, cloud functions and much more!
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- Library monkey-patches React to warn you about possibly unnecessary re-renders