Temporary retain

[loganvolkers]

In #64 there is a discussion about using the approach from @isograph/react-disposable-state to temporarily retain molecule values between initial render and commit.

Ideally this is something that the core React team will acknowledge as a limitation in their design of strict mode, and provide something like useSyncExternalStore that allows for disposing of snapshots instead of requiring completely ephemeral snapshots.

In the meantime the setTimeout based temporary retain solution in @isograph/react-disposable-state is one of the best that I've found. Unfortunately it leaves me with some big questions more than answers.

• Should temporary retain be added by as a default to bunshi? It seems like a backwards-incompatible change that may have unforeseen consequences. That means either supporting both ways of retaining values, or cutting a new major version.
• How long should temporary retain last? Why 5 seconds?
• Should temporary retain be added to scoper? or injector? or both? Or only to the React adapter?
• Should we roll our own temporary rentention? Or rely on @isograph/react-disposable-state? What are the effects of each approach on size and performance?