I built a simple react app using Gatsby. All that the app does create a calender and show it to the screen. When I checked the performance of the app using LightHouse, I got 90% on desktop perf and 31% on mobile perf.
This is a bare bone site. I thought Gatsby would convert my react code to HTML and that is supposed to load blazing fast...
So I checked the html of the page, </script></head><body><div id="___gatsby"></div><script src="/polyfill.js" nomodule=""></script><script src="/commons.js"></script></body></html>
It looks like the whole page just runs from JS script; nothing is actually converted to HTML.
What did I do wrong? I ran the site using npm run develop?
