Modem swallow exceptions

[Sgregory42]

Modem swallow exceptions and doesn't show them in the console.

Given this function with an assert that should fail:

pub fn init() -> #(Model, Effect(Msg)) {
  echo "in init"
  let assert Ok(_) = function_that_might_fail()
  echo "after assert"
  [...]

when I click on a link that load this, I don't see any error in the console and it doesn't show the "after assert".

From my debugging, the assert exception get caught modem.ffi.js#57 but doesn't do anything with it.

There is probably the same issue with the back/forward but I haven't tried.

Removing the try/catch in modem.ffi.js#57 behave as expected (show as an uncaught exception) although I don't know if it is the right behavior.