Pull#mapOutput deleted between 2.5.10 and 3.0.0
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- Scala
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Description
I'm trying to upgrade an application from fs2 2.5.10 to 3.2.5, and the method Pull#mapOutput has disappeared. It seems to have been deleted in this commit with no user-accessible replacement. As far as I can tell, there is no way to affect the output of a Pull without converting it to a Stream, but I can't do that yet because I still have results.
Is there some kind of migration guide from fs2 2-3? So far I have had to figure out migrations myself by diving through source code and reading github release notes (which do not mention the deletion of mapOutput).
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked commit that removed Pull#mapOutput, then compare the fs2 2.x and 3.x release notes and current Pull API. Document the user-accessible replacement for transforming Pull output before conversion to Stream and add migration guidance covering this change. Done means a newcomer can follow the guide without searching the source history.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala
- Domain
- documentation, stream-processing
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100