google cloud functions - Firebase storage artifacts is huge and keeps increasing

Question

I've just noticed that my app's storage was bumped almost to it's 5GB limits of free usage within the last few weeks. After checking it in more details, it appeared that this was caused by the "artifacts" bucket.

I saw this SO question which says that the "artifacts" bucket is related to Node 10 environment.

I indeed moved to Node 10 a month ago, but after figuring out that the logs are no longer structured in the firestore functions console, I've reverted back to Node 8 a few days later and only using Node 8 since then.

However I can see that the "artifacts" storage keeps increasing by about ~800Mb every week which worries me to say the least (please check the screenshots below)

I assume this is related to firestore functions deploys (or not?), but is this really expected? Can I cleanup this artifacts safely?

It looks very strange to me that it increased that dramatically within just a few weeks while previously I was using functions for a few years and never had any issues like that.

Appreciate any suggestions on how to safely handle storage size in this case and to keep its consumption at minimum.

I'm also using pubsub.schedule function in case it matters here.

I've also noticed that "artifact's" bandwidth spiked quite unexpectedly which I guess also has cost implications and I'd appreciate any input on possible approaches to minimize such spikes as well (about 22GB out of 22.5GB came from the "artifacts" bucket):

Answer 1

Waitting for answers