Unable to use attachments due to "Attribute shorthand cannot be empty"

[AlphabetsAlphabets]

I've taken an example directly from the documentation (https://svelte.dev/docs/svelte/@attach) and I still don't get the error. I've searched on stack overflow and it got me literally zero results.

<script lang="ts">
    import type { Attachment } from "svelte/attachments";
    const myAttachment: Attachment = (element) => {
		console.log(element.nodeName); // 'DIV'

		return () => {
			console.log('cleaning up');
		};
	};</script>

<button {@attach myAttachment}></button>

This is the error I got:

Attribute shorthand cannot be empty
https://svelte.dev/e/attribute_empty_shorthand (svelte attribute_empty_shorthand

Clicking the link doesn't do anything useful. Any help is appreciated, thanks.

[webJose]

I copied and pasted the code you're presenting in a REPL and has no such error.

You'll have to present minimal code that reproduces this.

[AlphabetsAlphabets]

This is the minimal code. What else can I do?

[AlphabetsAlphabets]

In trying to recreate another MRE, I cannot reproduce the problem. Also, the error is gone now. Not sure if it has anything to do with the specific editor I'm using which is Zed.

[webJose]

This is the minimal code. What else can I do?

Minimal code that reproduces the error. Big difference. As you can see in the REPL I provided with your minimal code, this code doesn't demonstrate the problem. This means that you have more code, and that most likely, the error has nothing to do with the attachment you're showing, again, as demonstrated by the REPL.

[webJose]

In trying to recreate another MRE, I cannot reproduce the problem. Also, the error is gone now. Not sure if it has anything to do with the specific editor I'm using which is Zed.

This is possible. I use VS Code and I sometimes have to restart the extensions to get rid of errors I know shouldn't exist. Maybe it has to do with your editor's extension, and not your code. Good point.

[AlphabetsAlphabets]

Thanks for the insight on the MRE and the note on editors! Since the problem is no longer there, I'll mark your reply as the answer.