Method initMessageEvent

types/websocket.d.ts:109–109

(
    type: string,
    bubbles?: boolean,
    cancelable?: boolean,
    data?: any,
    origin?: string,
    lastEventId?: string,
    source?: MessagePort | null,
    ports?: MessagePort[]
  )

  readonly ports: readonly MessagePort[]
  readonly source: MessagePort | null
  initMessageEvent(
    type: string,
    bubbles?: boolean,
    cancelable?: boolean,