Deno•3y ago

rusty_v8 extracting stack trace when a promise rejects

Hi, i am trying to get the stack trace and print it out when a promise rejects.

if promise.state() == v8::PromiseState::Rejected {
  let exception = promise.result(scope);
  retval = exception.to_rust_string_lossy(scope);

  if exception.is_native_error() {
   //how to get the exception stack trace to print here?
   // i have retval from above, but it is just the oneliner eg:TypeError: Assignment to constant variable.
   
 }

if promise.state() == v8::PromiseState::Rejected {
  let exception = promise.result(scope);
  retval = exception.to_rust_string_lossy(scope);

  if exception.is_native_error() {
   //how to get the exception stack trace to print here?
   // i have retval from above, but it is just the oneliner eg:TypeError: Assignment to constant variable.
   
 }

in the above example, i have the

retval

retval

as the exception string which contains something like

TypeError: Assignment to constant variable.

TypeError: Assignment to constant variable.

. But how do i extract exception stack trace and get the line number and other details as well from this?

mmastrac•7/26/23, 5:58 PM

I'm not totally sure, but can you just use the object getter for the property?

mmastrac•7/26/23, 6:02 PM

I read the rusty_v8 docs a bit more, and it looks like you can use

AV6OP•7/27/23, 3:03 AM

that doesnt seem to work. Tried it, it just gives out None