description

# addError abstract method

void addError(

1. Object error, [
2. StackTrace? stackTrace

])
override

Sends or enqueues an error event.

Listeners receive this event at a later microtask. This behavior can be overridden by using `sync` controllers. Note, however, that sync controllers have to satisfy the preconditions mentioned in the documentation of the constructors.

## Implementation

    void addError(Object error, [StackTrace? stackTrace]);