Typed EventTarget for TypeScript

TypedEventTarget.ts

export default class TypedEventTarget<Events extends object> extends EventTarget {
	override addEventListener<K extends keyof Events, U = Events[K] extends Event ? Events[K] : CustomEvent<Events[K]>>(
		type: K,
		listener: (this: this, event: U) => void,
		options?: AddEventListenerOptions | boolean
	) {
		super.addEventListener(type as string, listener as any, options)
	}

	override dispatchEvent<K extends keyof Events>(type: K, detail: Events[K]): boolean
	override dispatchEvent<K extends keyof Events>(event: Event): boolean
	override dispatchEvent<K extends keyof Events>(type: K | Event, detail?: Events[K]): boolean {
		const event = type instanceof Event ? type : new CustomEvent(type as string, { detail })

		const prop = this['on' + event.type] as (event: Event) => void
		prop?.call(this, event)

		return super.dispatchEvent(event)
	}

	override removeEventListener<K extends keyof Events, U = Events[K] extends Event ? Events[K] : CustomEvent<Events[K]>>(
		type: K,
		listener: (this: this, event: U) => void,
		options?: AddEventListenerOptions | boolean
	) {
		super.removeEventListener(type as string, listener as any, options)
	}
}