7 common Next.js HMR issues and how to address them

Next.js has introduced Hot Module Replacement (HMR), also known as Fast Refresh, to enhance web development by allowing immediate reflection of code edits in the browser without a full page reload. This feature significantly improves efficiency by preserving the local state of components during updates, although it can present challenges, such as issues with preserving state, handling i18n translation updates, and making changes to configuration files like next.config.js. Fast Refresh is automatically disabled in production to save resources, but developers may encounter problems if it's inadvertently enabled, leading to unnecessary resource usage. Despite its benefits, some issues like flashes of unstyled content (FOUC) and lack of support for disabling Fast Refresh can complicate its use. Solutions often involve server restarts or configuration adjustments, and while disabling Fast Refresh is discouraged by the Next.js team, developers can employ workarounds to address specific needs.