reveal.js/js/utils/device.ts

const UA = navigator.userAgent;

export const isMobile =
	/(iphone|ipod|ipad|android)/gi.test(UA) ||
	(navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1); // iPadOS

export const isChrome = /chrome/i.test(UA) && !/edge/i.test(UA);

export const isAndroid = /android/gi.test(UA);