The majority of our node-based services is currently running Node 6 and that branch is EOLed 2019-04-01: https://nodejs.org/en/about/releases/
I can backport security fixes for a while, but that's not ideal and we should plan the migration of node-based services to 10 (which also implies stretch as node10 has hard requirements on libraries only in stretch).
Services currently using nodejs:
[ ] restbase (jessie)
[ ] All the services on scb (jessie) (migration to Kubernetes in progress)
[x] turnilo (stretch) https://phabricator.wikimedia.org/T210705
[x] aqs (stretch) https://phabricator.wikimedia.org/T210706
[x] maps (stretch) https://phabricator.wikimedia.org/T215852
[x] phabricator/aphlict (jessie, but stretch host exists(non-prod at this point)
[ ] proton (stretch)
[ ] parsoid (stretch)
[x] etherpad-lite (jessie)
[ ] 3d2png - thumbor (jessie/stretch)
node10 debs for stretch are available in the repository component "component/node10" , see T203239 for further details. After https://gerrit.wikimedia.org/r/477475 `service::node` deploys the stretch nodejs10 component with the parameter use_nodejs10 set to true.