iceshrimp/src/web/app/client/script.js

/**
 * MISSKEY CLIENT ENTRY POINT
 */
(() => {
	const head = document.getElementsByTagName('head')[0];

	// Detect user language
	let lang = (navigator.languages && navigator.languages[0]) || navigator.language;
	if (!/en|en\-US|ja/.test(lang)) lang = 'en';

	// Detect user agent
	const ua = navigator.userAgent.toLowerCase();
	const isMobile = /mobile|iphone|ipad|android/.test(ua);

	const app = isMobile ? 'mobile' : 'desktop';

	// Load app script
	const script = document.createElement('script');
	script.setAttribute('src', `/assets/${app}.${VERSION}.${lang}.js`);
	script.setAttribute('async', 'true');
	script.setAttribute('defer', 'true');
	head.appendChild(script);

	if (isMobile) {
		const meta = document.createElement('meta');
		meta.setAttribute('name', 'viewport');
		meta.setAttribute('content', 'width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no');
		head.appendChild(meta);
	}
})();