BREAKING_EVENT_CHANGE: Breaking event change
| Severity | Fault | Stage |
|---|---|---|
| warning | customer (the source package) | version creation |
What it means
Section titled “What it means”Compared with the version in production (or the latest version while production points nowhere), an event of the component was removed, no longer bubbles or crosses the shadow root, or its detail changed in a way listeners may not understand: another type, a removed field, a field that became optional, a new enum value, a wider bound. The version is created; promoting it to production needs allowBreaking.
How to fix
Section titled “How to fix”Keep emitting the old event with its old detail (add fields beside the old ones), or emit a new event for the new shape; otherwise update the listeners on every page and promote with allowBreaking.