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a tool for shared writing and social publishing forked from leaflet.pub/leaflet
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function testUserAgent(re: RegExp) { if (typeof window === "undefined" || window.navigator == null) { return false; } return ( //@ts-ignore window.navigator["userAgentData"]?.brands.some( (brand: { brand: string; version: string }) => re.test(brand.brand), ) || re.test(window.navigator.userAgent) );}
function testPlatform(re: RegExp) { return typeof window !== "undefined" && window.navigator != null ? re.test( //@ts-ignore window.navigator["userAgentData"]?.platform || window.navigator.platform, ) : false;}
function cached(fn: () => boolean) { if (process.env.NODE_ENV === "test") { return fn; }
let res: boolean | null = null; return () => { if (res == null) { res = fn(); } return res; };}
export const isMac = cached(function () { return testPlatform(/^Mac/i);});
export const isIPhone = cached(function () { return testPlatform(/^iPhone/i);});
export const isIPad = cached(function () { return ( testPlatform(/^iPad/i) || // iPadOS 13 lies and says it's a Mac, but we can distinguish by detecting touch support. (isMac() && navigator.maxTouchPoints > 1) );});
export const isIOS = cached(function () { return isIPhone() || isIPad();});
export const isAppleDevice = cached(function () { return isMac() || isIOS();});
export const isWebKit = cached(function () { return testUserAgent(/AppleWebKit/i) && !isChrome();});
export const isChrome = cached(function () { return testUserAgent(/Chrome/i);});
export const isAndroid = cached(function () { return testUserAgent(/Android/i);});
export const isFirefox = cached(function () { return testUserAgent(/Firefox/i);});