MMancsok

JS-only content

The block below is empty in the server HTML and filled in by the browser. Fetch this URL with curl and you will see the placeholder; render it in a headless browser and you will see the payload.

SERVER_PLACEHOLDER — no JavaScript has run yet.
The block carries data-state="server" before hydration and data-state="client" after. Assert on that attribute rather than on the body text, which this paragraph would otherwise pollute.
JS-only content — Mancsok