Open angular dom element schema https://github.com/angular/angular/blob/master/packages/compiler/src/schema/dom_element_schema_registry.ts#L78
where:
- (no prefix): property is a string.
*: property represents an event.!: property is a boolean.#: property is a number.%: property is an object.
Then press ctrl+F and write *

@HostListener(and also (customEvent)="handler()") can also listen to custom events
Example