So Nextjs 15+ doesnt call fetches twice in dev, but Nextjs 14- does?

Question

I'm currently on 14.2.4 and always found the calling API endpoints twice incredibly annoying because it creates buggy behavior when 3rd party endpoints require idempotency.
Is there a way to turn it off on vers 14?
Is it defaulted to turned off on vers 15?
Does vers 15 support not doing this?

NicraM · Answer

I’m not sure if this behavior has been changed in Next 15, but if it bothers you in Next 14, setting the reactStrictMode flag to false in next.config should solve your problem.

So Nextjs 15+ doesnt call fetches twice in dev, but Nextjs 14- does?

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