What is supposed to re-build during an

sst start

when you save a function file. It seems like it rebuilds the whole App? Or at least the current stack in the app? So if you have a StaticSite (React) inside that same stack…. it rebuilds the whole site with he save? Thats what we are seeing…. doesn’t seem like that should be the case though, not, quite efficient? No?

It shouldn't rebuild the whole app. After first build of the function we keep track of all the files it depends on. On change we only rebuild functions that depend on those files