Add https://www.npmjs.com/package/react-refresh in dev mode
The guide https://github.com/facebook/react/issues/16604#issuecomment-528663101
This is currently being developed https://github.com/zeit/next.js/pull/12008
Closing as this is already supported, re above comment.
@Timer you should specify experimental functions in the documentation =) otherwise many people will ask the same thing =) sorry for distract
Experimental features are not meant to be used by normal users, so we do not plan on documenting them. They're available to people who dive in the code and find them, or follow PRs closely!
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This is currently being developed https://github.com/zeit/next.js/pull/12008