29 lines
565 B
TypeScript
29 lines
565 B
TypeScript
export function isKeyboardEvent(event: Event): event is KeyboardEvent {
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return 'key' in event;
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}
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export function normalizeKey(key: string): string {
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const lowerKey = key.toLowerCase();
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switch (lowerKey) {
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case ' ':
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case 'spacebar': // for older browsers
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return 'space';
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case 'arrowup':
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return 'up';
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case 'arrowdown':
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return 'down';
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case 'arrowleft':
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return 'left';
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case 'arrowright':
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return 'right';
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case 'esc':
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case 'escape':
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return 'escape';
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default:
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return lowerKey;
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}
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}
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