inst/reveal.js-4.6.1/js/utils/device.js

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 );