Method constructor

src/ink/events/focus-event.ts:14–20

(
    type: 'focus' | 'blur',
    relatedTarget: EventTarget | null = null,
  )

  readonly relatedTarget: EventTarget | null

  constructor(
    type: 'focus' | 'blur',
    relatedTarget: EventTarget | null = null,
  ) {
    super(type, { bubbles: true, cancelable: false })
    this.relatedTarget = relatedTarget
  }
}