# EventMap.error property · @imqueue/core

Source: https://imqueue.org/api/core/latest/core.eventmap.error/
Published: 2026-08-04
Author: @imqueue maintainers (https://github.com/imqueue)
Package: @imqueue/core 3.3.2 — generated reference, not hand-written

Emitted for background failures, with the error and the name of the internal routine that caught it — a diagnostic label such as `OnMessage`, `OnReadSafe` or `OnWatch`, not an error code.

**Signature:**

```typescript
error: [error: Error, eventName: string];
```

## Remarks

Emitted only when at least one `error` listener is attached; otherwise the error is logged and swallowed so a background routine cannot crash the process. Errors are always written to [IMQOptions.logger](https://imqueue.org/api/core/latest/core.imqoptions.logger/) as well, and emission is informational — the queue keeps running.