Class EventEmitterBase<Events>`Abstract`

Simple event emitter class that allows adding event listeners and emitting events. Events can be emitted by accessing the protected emitter field.

Type Parameters

Events extends Record<EventType, unknown> = never
A type representing the events that the instance can emit and listen to.

Hierarchy (View Summary)

EventEmitterBase

Implements

EventEmitter<Events>

Index

Constructors

Properties

Methods

addEventListener

Constructors

constructor

new EventEmitterBase<Events extends Record<EventType, unknown> = never>(): EventEmitterBase<
Events,
>
Type Parameters
- Events extends Record<EventType, unknown> = never
Returns EventEmitterBase<Events>

Properties

`Protected` `Readonly`emitter

emitter: Emitter<Events> = ...

An event emitter for handling custom events.

Methods

addEventListener

addEventListener<K extends string | number | symbol>(
event: K,
listener: (eventData: Events[K]) => void,
): EventHandle
Adds an event listener for a specific event.
Type Parameters
- K extends string | number | symbol
  The type of the event key.
Parameters
- event: K
  The event to listen to.
- listener: (eventData: Events[K]) => void
  The callback function to be invoked when the event is emitted.
Returns EventHandle
An EventHandle with a remove method to unsubscribe the listener.
Implementation of EventEmitter.addEventListener
- Defined in packages/sdk/core/src/lib/Event/EventEmitter.ts:76