React 16: A look inside an API-compatible rewrite of our frontend UI library | Engineering Blog | Facebook Code | Facebook

With today's release of React 16, we've completely rewritten the internals of React while keeping the public API essentially unchanged. From an engineering standpoint, it's a bit like swapping out the engine of a running car: since hundreds of other companies (including Facebook) use React in production every day, we wanted to do the swap without forcing people to rewrite their components built in React.


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