No compile errors when passing empty directive names

[qurafi]

Looks like I can pass empty directive names which can generate invalid JS code without any compilation errors or with unclear errors

For example in actions

<element use: />

Parts of generated code looks like:

dispose = action_destroyer(_action = .call(null, h1));

Same happens with event directive. but it does not throw JS syntax error

dispose = listen(h1, "", /*_handler*/ ctx[0]);

With bind and animation directives. It throws an error because it is not able to look for the empty variable name in the component.

[!] (plugin svelte) ValidationError: is not declared

[Phaqui]

Unable to reproduce in the repl. The one-line App.svelte component of <div use: /> gives me Unexpected token (Note that you need plugins to import files that are not JavaScript)

Which version is this?

[qurafi]

You already reproduced it. This message because rollup cannot parse the invalid generated code dispose = action_destroyer(_action = .call(null, h1));

[Conduitry]

In 3.39.0, this now throws a compiler error.