In v9, `auto` is no longer supported, so we need to fix the "tree view" example. https://github.com/react-spring/react-spring-examples/blob/111bd7eb6308b95213e963712660a0441e3a4bd2/demos/hooks/tree/index.js#L37
In v9,
autois no longer supported, so we need to fix the "tree view" example.https://github.com/react-spring/react-spring-examples/blob/111bd7eb6308b95213e963712660a0441e3a4bd2/demos/hooks/tree/index.js#L37