Not exactly, in Svelte you don't declare components in plain js, you create a svelte file and the compiler does the rest. Whether a component is a function or a

Not exactly, in Svelte you don't declare components in plain js, you create a svelte file and the compiler does the rest. Whether a component is a function or a class is an internal detail you don't need to know, except in the case you are instantiating a component manually, which is a edge case.