This project contains set of rules allowing to migrate Scala 2 macro-annotation based codecs into Scala 3 built-in derivation.

Main rule, detects usages of JsonCodec, ConfiguredJsonCodec macro-annotations and replaces them with derived Codec.AsObject or ConfiguredCodec instances. Supports @JsonKey annotation used to renaem fields defined either in primary constructor or as member fields (renames or member fields are working using best effort principles). Supoprts ConfiguredJsonCodec(encodeOnly = true) and ConfiguredJsonCodec(decodeOnly = true) variants, these would be rewritten into ConfiguredEncoder or ConfiguredDecoder derived instances. Can be used to migrate usages of both circe-generic-extras and circe-derivation to Scala 3.

Simple rule allowing to adopt to json string interpolator changes done in Scala 3. Would rewrite imports io.circe.literal.JsonStringContext into io.circe.literal.json.

For information on how to use this projects refer to Scalafix user guide