errorAfterFinally property
An error that is only passing through a finally block: it was raised in
a protected region that has no matching catch clause, so it must be
re-raised at the enclosing try once the finally has finished.
SCC12: it cannot simply be left in currentError while the finally runs.
The state machine clears currentError after every statement that
completes normally, so an error parked there is erased by the first
statement of the finally block — which is how an exception thrown inside
try { … } finally { … } inside an async function used to vanish
altogether, leaving the enclosing catch unrun.
Implementation
Object? errorAfterFinally;