I have an implementation I use that has multiple drivers (PostgreSQL, Firestore, SQLite3, just a file, Redis, or an in-memory store) written in TypeScript and it's been working well for my low-scale needs. The interfaces could support interfacing with a dedicated queuing system if you needed to migrate over time.

It supports pipelines, batched pipelines, and basic runners, as well as idempotent keys (including batching them). It also lets you "partition" a queue into multiple sub-queues so that you can easily segregate your jobs within your application without a lot of setup on the outside. For example, you create a root queue talking to PostgreSQL and pass it around to subsystems that then each create their own sub-queue off that to enqueue entries into and their own workers that dequeue them.

It's only used internally right now but I've been thinking about creating a separate package (with documentation) with it for others to use as well. Any feedback or pull requests would be appreciated !

[0] https://github.com/KeetaNetwork/anchor/blob/main/src/lib/que...

[1] https://github.com/KeetaNetwork/anchor/blob/main/src/lib/que...