*.firebaseapp.com
firebase.json
{ "hosting": { "headers": [ { "source": "/", "headers": [{"key": "Link", "value": "</js/app.js>;rel=preload;as=script,</css/app.css>;rel=preload;as=style"}] }, { "source": "/users/*", "headers": [{"key": "Link", "value": "</js/app.js>;rel=preload;as=script,</css/app.css>;rel=preload;as=style;nopush,</css/users.css>;rel=preload;as=style"}] } ] } }
/js/app.js
/css/app.css
/users/*
/css/users.css
app.css
;nopush
dig <your-site>.firebaseapp.com
s-sni.firebaseapp.com
151.101.1.195 151.101.65.195
