typelevel/typelevel-scalafix

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Scalafix rules for Typelevel projects

Stars: 27
Forks: 8
Open beginner issues: 0
Indexed issues: 18

Dominant language: Scala
License: Apache-2.0
Last GitHub push: Sep 13, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

18 open issues indexed

Lint for the list monoid Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

typelevel/typelevel-scalafix#252 · 1 reaction · Opened Dec 16, 2025
Rewrite rules for `sequence_`, `traverse_` and their counterparts Open

question

Difficulty 3/5 1-2 days Newbie friendliness 45/100

typelevel/typelevel-scalafix#209 · 2 comments · Opened Jan 22, 2025
Add warning for `fa.map(g).as(x)` or `fa.map(g).void` Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

typelevel/typelevel-scalafix#155 · 1 reaction · Opened Dec 5, 2023
Lint `UUID.randomUUID()` in favor of `cats.effect.UUIDGen` Open

enhancement good first issue

Difficulty 3/5 1-2 days Newbie friendliness 35/100

typelevel/typelevel-scalafix#128 · 3 comments · 1 reaction · Opened Jul 24, 2023
Demand for implicit Spawn[F] and Parallel[F] Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

typelevel/typelevel-scalafix#89 · Opened Feb 3, 2023
Try to warn on `Resource` leak Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

typelevel/typelevel-scalafix#76 · 1 comment · 1 reaction · Opened Dec 20, 2022
Rewrite `resource.use { _ => useIt }` as `.surround(useIt)` Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

typelevel/typelevel-scalafix#64 · 2 comments · Opened Oct 12, 2022
disable-`toString` rule Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

typelevel/typelevel-scalafix#53 · Opened Aug 24, 2022
TypelevelAs should add `cats.syntax` import Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

typelevel/typelevel-scalafix#49 · 9 comments · Opened Jul 26, 2022
Rewrite `Right(())` to `Either.unit` Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

typelevel/typelevel-scalafix#46 · 1 comment · Opened Jul 25, 2022
Lint for `.flatTap` with non-`Unit` result Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 42/100

typelevel/typelevel-scalafix#43 · 2 reactions · Opened Jul 16, 2022
Add linter for any discarded value Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

typelevel/typelevel-scalafix#32 · 6 comments · 1 reaction · Opened Jun 20, 2022
Lint/fix for when `traverse` can be `traverse_` ? Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

typelevel/typelevel-scalafix#24 · 1 comment · Opened Jun 16, 2022
Setup a website Open

documentation

Difficulty 5/5 Over a week Newbie friendliness 25/100

typelevel/typelevel-scalafix#23 · Opened Jun 15, 2022
Add a rewrite for `MapSequence` rule Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

typelevel/typelevel-scalafix#13 · 1 reaction · Opened Jun 7, 2022
Lint cats instance imports Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

typelevel/typelevel-scalafix#7 · 1 reaction · Opened May 5, 2022
`MonadError[A, Throwable]` -> `MonadThrow[A]` Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

typelevel/typelevel-scalafix#5 · Opened May 5, 2022
"deprecate" cats future instances Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 30/100

typelevel/typelevel-scalafix#2 · 1 reaction · Opened May 5, 2022

typelevel/typelevel-scalafix

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