[camera] torch not working about expo HOT 2 CLOSED

Hi @jamesthomp - The torch cannot be started immediately during the first render as the camera has not been connected. I'm not sure what the use case would be for immediately starting the torch but you can use an effect to turn it on once the camera has rendered. The legacy camera can do this because of some inefficiencies in it's setup. These have been removed in the new package and as a side effect you will need to do it like this if you want this behaviour.

from expo.

Thanks for this explanation @alanjhughes. Is this behaviour of the props not applying if set before the first render exclusive to the torch prop or are there others that also need to be handled through the useEffect trick? It might be nice to add a warning to the documentation for anyone migrating given the difference in behaviour from the prior implementation.

In my case I "remember" the user preference for the torch, so if the torch was previously used then the torch prop is set even before the render, which is why I bumped into this when migrating

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