Evolution and support
Another great point about React is its long-term support policy and the stability of its API. Stability is actually part of the core design principles (https://reactjs.org/docs/design-principles.html) of React. As stated on that page, Facebook itself has more than 50,000 components that use React. Because of that, Facebook tries really hard to keep the public API surface of React as stable as possible.
This does not mean that things are frozen though—far from it. What usually happens is that deprecation warnings are issued and remain until the next major release. At that point, codemod scripts are often provided to automate the bulk of the modifications needed to upgrade from a previous release to the latest and greatest. ...
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