bitview: reorg part 1

websites/bitview/scripts/core/env.js

@@ -0,0 +1,24 @@
+const localhost = window.location.hostname === "localhost";
+const standalone =
+  "standalone" in window.navigator && !!window.navigator.standalone;
+const userAgent = navigator.userAgent.toLowerCase();
+const isChrome = userAgent.includes("chrome");
+const safari = userAgent.includes("safari");
+const safariOnly = safari && !isChrome;
+const macOS = userAgent.includes("mac os");
+const iphone = userAgent.includes("iphone");
+const ipad = userAgent.includes("ipad");
+const ios = iphone || ipad;
+
+export default {
+  standalone,
+  userAgent,
+  isChrome,
+  safari,
+  safariOnly,
+  macOS,
+  iphone,
+  ipad,
+  ios,
+  localhost,
+};