const systemModifiers = new Set(['ctrl', 'shift', 'alt', 'meta'])
+type KeyedEvent = KeyboardEvent | MouseEvent | TouchEvent;
+
const modifierGuards: Record<
string,
(e: Event, modifiers?: string[]) => void | boolean
stop: e => e.stopPropagation(),
prevent: e => e.preventDefault(),
self: e => e.target !== e.currentTarget,
- ctrl: e => !(e as any).ctrlKey,
- shift: e => !(e as any).shiftKey,
- alt: e => !(e as any).altKey,
- meta: e => !(e as any).metaKey,
- left: e => 'button' in e && (e as any).button !== 0,
- middle: e => 'button' in e && (e as any).button !== 1,
- right: e => 'button' in e && (e as any).button !== 2,
+ ctrl: e => !(e as KeyedEvent).ctrlKey,
+ shift: e => !(e as KeyedEvent).shiftKey,
+ alt: e => !(e as KeyedEvent).altKey,
+ meta: e => !(e as KeyedEvent).metaKey,
+ left: e => 'button' in e && (e as MouseEvent).button !== 0,
+ middle: e => 'button' in e && (e as MouseEvent).button !== 1,
+ right: e => 'button' in e && (e as MouseEvent).button !== 2,
exact: (e, modifiers) =>
modifiers!.some(m => systemModifiers.has(m) && (e as any)[`${m}Key`])
}