interface CustomElements {
    'component-one': {
        foo?: string;
    },
    'component-two': {
        bar?: string;
    }
}

interface Options<T extends keyof CustomElements> {
    props: CustomElements[T];
}

function create<T extends keyof CustomElements>(name: T, options: Options<T>) {
    return { name, options };
}

create('component-one', { props: { /* trigger intellisense here */ } });

const opts: Options<'component-one'> = {
    props: { /* and here */ }
}