Catch panics inside context

[Andrew15-5]

Description

I have a template which has a context assertion. If it panics (i.e., fails), tt doesn't catch it:

#import "...": template

#let document() = [
  #show: template
  ...
]

#assert-panic(document) // Doesn't panic.
// #context assert.eq(catch(document), none) // Doesn't panic.
#document() // Panics.

Alternative Solutions

Hoist context outside of assert-panic/catch, but then users must use this:

#show: doc => context {
  show: template.with(
    ...
  )
  doc
}

Which is not acceptable.

Additional Context

Context

[tingerrr]

It's unclear if this is possible at the moment, but my first instinct is to create an element that delays the assertion to when the element is shown, though I'm not sure if this will actually work.

[Andrew15-5]

Since Typst itself can sometimes completely ignore panics in context, I think this is an upstream issue. I think in user space nothing will change, but if you can look into context in Rust, at least if it panics, then it should be simple to add.