playcanvas/build/playcanvas/src/core/platform.js

PlayCanvas WebGL game engine

const detectPassiveEvents = ()=>{
		let result = false;
		try {
				const opts = Object.defineProperty({}, 'passive', {
						get: function() {
								result = true;
								return false;
						}
				});
				window.addEventListener('testpassive', null, opts);
				window.removeEventListener('testpassive', null, opts);
		} catch (e) {}
		return result;
};
const ua = typeof navigator !== 'undefined' ? navigator.userAgent : '';
const environment = typeof window !== 'undefined' ? 'browser' : typeof global !== 'undefined' ? 'node' : 'worker';
const platformName = /android/i.test(ua) ? 'android' : /ip(?:[ao]d|hone)/i.test(ua) ? 'ios' : /windows/i.test(ua) ? 'windows' : /mac os/i.test(ua) ? 'osx' : /linux/i.test(ua) ? 'linux' : /cros/i.test(ua) ? 'cros' : null;
const browserName = environment !== 'browser' ? null : /Chrome\/|Chromium\/|Edg.*\//.test(ua) ? 'chrome' : /Safari\//.test(ua) ? 'safari' : /Firefox\//.test(ua) ? 'firefox' : 'other';
const xbox = /xbox/i.test(ua);
const touch = environment === 'browser' && ('ontouchstart' in window || 'maxTouchPoints' in navigator && navigator.maxTouchPoints > 0);
const gamepads = environment === 'browser' && (!!navigator.getGamepads || !!navigator.webkitGetGamepads);
const workers = typeof Worker !== 'undefined';
const passiveEvents = detectPassiveEvents();
const platform = {
		name: platformName,
		environment: environment,
		global: (typeof globalThis !== 'undefined' && globalThis) ?? (environment === 'browser' && window) ?? (environment === 'node' && global) ?? (environment === 'worker' && self),
		browser: environment === 'browser',
		worker: environment === 'worker',
		desktop: [
				'windows',
				'osx',
				'linux',
				'cros'
		].includes(platformName),
		mobile: [
				'android',
				'ios'
		].includes(platformName),
		ios: platformName === 'ios',
		android: platformName === 'android',
		xbox: xbox,
		gamepads: gamepads,
		touch: touch,
		workers: workers,
		passiveEvents: passiveEvents,
		browserName: browserName
};

export { platform };