21 lines
663 B
TypeScript
21 lines
663 B
TypeScript
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export const isTouchDevice = function (): boolean {
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// because windows touch support stinks
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if (navigator.userAgent.match(/Windows NT/i)) return false;
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const prefixes = ' -webkit- -moz- -o- -ms- '.split(' ')
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const mq = function (query: string): boolean {
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return window.matchMedia(query).matches
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}
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if ('ontouchstart' in window
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|| (navigator.maxTouchPoints > 0)
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|| (navigator.msMaxTouchPoints > 0)
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|| (window as any).DocumentTouch && document instanceof (window as any).DocumentTouch) {
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return true
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}
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const query = prefixes.map(i => `(${i}touch-enabled)`).join(',')
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return mq(query)
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}
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