(event?: KeyboardEvent | null)
| 30 | ].join(', ') |
| 31 | |
| 32 | function getTargetElement(event?: KeyboardEvent | null): HTMLElement | null { |
| 33 | return event?.target instanceof HTMLElement ? event.target : null |
| 34 | } |
| 35 | |
| 36 | function getActiveElement(): HTMLElement | null { |
| 37 | return document.activeElement instanceof HTMLElement ? document.activeElement : null |