esinstall can install Svelte components from npm, but only if the pkg.svelte field corresponds to a .svelte file, which isn't always the case.
If the component is imported by an intermediate JavaScript module and includes CSS, esinstall will spin its wheels for a while and eventually run out of memory.
npm install
node install # attempts to install a demo package# this works, because svelte-scroller exposes a single .svelte file
node install @sveltejs/svelte-scroller
# this fails
node install @sveltejs/pancake