[feat] expose wait and try_wait on CommandChild

[ImUrX]

Describe the problem

I need to wait for a process to finish and the only way to do it is with the methods provided by Rust.

Describe the solution you'd like

Expose the functions from Child that let you do this

Alternatives considered

No response

Additional context

No response

[amrbashir]

So there is Command::output on the Rust side and Command::execute on the JS side which both will wait until the child is finished, is that not enough?

[ImUrX]

yeah thats a way to do it, but try_wait would be nice, and then if you have a try_wait why wouldnt you have a wait

[grzianod]

It is not enough for spawned processes that execute binaries that can run undefinitely and must be terminated with user-input (or signal/events such as screen recording tasks). It would be very nice to spawn the process, do something else and when necessary wait for the child process output. @amrbashir

[VanIseghemThomas]

+1 for this. I need this to check if a sidecar process unexpectedly closed. In that case the CommandChild object is still present.
Specifically I'm bumping into a similar situation as @grzianod mentioned where my process is terminated/started on user input.
Being able to run try_wait on it would allow me to verify this.

[FabianLars]

superseeded by tauri-apps/plugins-workspace#1920