Disable preview button if preview returns undefined or empty string?

[Stupidism]

Sometimes not all documents of a collection is previewable. I think it's reasonable to be disabled.

export type GeneratePreviewURL = (doc: Record<string, unknown>, options: GeneratePreviewURLOptions) => Promise<string | false> | string | false;

[jacobsfletch]

@Stupidism I think this makes perfect sense, I'm going to mark this as planned.

[evelynhathaway]

Related PR that was merged after this discussion was created: #2507

If the preview function returns null, clicking the button shows an error toast. It's not the same as disabling or removing the button