Open
Description
Describe the problem
For the time being while features like changing <body> class (#3105) and styles
<svelte:body style="max-width: 50em; margin: auto;" />
are not supported, would be nice if the Svelte compiler showed a warning when people try to do this.
Describe the proposed solution
Red squiggly lines below and a tooltip saying
The svelte:body element only allows listening for events that fire on
document.body. It does not support modifyingdocument.body.
on hovering lines like:
<svelte:body style="max-width: 50em; margin: auto;" />
<svelte:body class:foo={is_bar} />
Alternatives considered
Current state of no compiler warning requires people to search GitHub.
Importance
nice to have