Stop no-unused-expressions on svelte $ assignments

I'm trying to setup an ESLint using the libs eslint, typescript-eslint (along with its parser) & eslint-plugin-svelte, but each time I write something along the lines of

$: somevar, somefunction();

ESLint (@typescript-eslint) triggers

@typescript-eslint/no-unused-expressions

I would like to find a way not to remove this rule (but remove this warning) as it seems like a useful for other usecases than this one, but haven't found any solution yet.