EventEmitter | /mod.ts | evtemitter@2.0.0

method EventEmitter.prototype.once

import { EventEmitter } from "https://deno.land/x/evtemitter@2.0.0/mod.ts";

once<K extends keyof T & string>(type: K, callback: CustomEventCallbackOn<T[K]>): this

add a callback to an event only once. After that, the listener is removed.

once<K extends keyof T & string>(types: K[], callback: CustomEventCallbackOn<T[K]>): this

add a callback to multiple events only once. After that, the listener is removed.

add a callback to an event only once. After that, the listener is removed.

Type Parameters

K extends keyof T & string

type: K

the event name the callback should listen to

the callback to execute when the event is dispatched

this

add a callback to multiple events only once. After that, the listener is removed.

K extends keyof T & string

types: K[]

an array of the event names the callback should listen to

the callback to execute when the event is dispatched

this