Class EventListenerManager

constructor

• new EventListenerManager(name?: string): EventListenerManager

  Parameters

  • name: string = "default"

  Returns EventListenerManager

name

listeners

addEventListener

• addEventListener(
      target: EventTarget | null,
      event: string,
      handler: EventListenerOrEventListenerObject,
      options?: boolean | AddEventListenerOptions,
      label?: string,
  ): number | null

  Parameters

  • target: EventTarget | null
  • event: string
  • handler: EventListenerOrEventListenerObject
  • options: boolean | AddEventListenerOptions = false
  • label: string = ""

  Returns number | null

addEmitterListener

• addEmitterListener(
      target: { on?: (e: string, h: () => void) => void } | null,
      event: string,
      handler: () => void,
      label?: string,
  ): number | null

  Parameters

  • target: { on?: (e: string, h: () => void) => void } | null
  • event: string
  • handler: () => void
  • label: string = ""

  Returns number | null

removeListener

• removeListener(id: number): boolean

  Parameters

  • id: number

  Returns boolean

removeListenersForTarget

• removeListenersForTarget(
      target: EventTarget | { off?: (e: string, h: () => void) => void },
  ): number

  Parameters

  • target: EventTarget | { off?: (e: string, h: () => void) => void }

  Returns number

removeAll

• removeAll(): void

  Returns void

mark

• mark(): number

  A watermark: the id the next registered listener will get. Ids only grow, so the listeners registered from here on are exactly those removeSince releases.

  Returns number

  The watermark, to hand to removeSince.

removeSince

• removeSince(mark: number): number

  Releases every listener registered since mark — and only those: what was registered before stays. This is how a boot releases its own listeners without taking down what a host registered on the same manager before it.

  Parameters

  • mark: number

    A watermark taken by mark.

  Returns number

  How many listeners were released.

getCount

• getCount(): number

  Returns number

listActiveListeners

• listActiveListeners(): {
      id: number;
      event: string;
      label: string;
      type: string;
      age: number;
  }[]

  Returns { id: number; event: string; label: string; type: string; age: number }[]

destroy

• destroy(): void

  Returns void