I don't have a similar extension installed for Svelte and can do everything you described without an extension. Does this work on Firefox, I recently switched

I don't have a similar extension installed for Svelte and can do everything you described without an extension. Does this work on Firefox, I recently switched to that? The React extension was/is great, I assume this one for Vue is as well. But, it wasn't there when I was doing Vue and the out of box experience of Vue was not good because of it.