next.js/test/development/app-dir/edge-errors-hmr/app/comp.server.js

'use client'

export function CompServer() {
  return (
    <div>
      <p>- This is a component (server)</p>
      {/* Uncomment the following line and save file to see the error: */}
      {/* < */}
    </div>
  )
}