{"id":55957,"library":"cats-core-sjs0-6-2-12","title":"Cats Core (Scala.js 0.6, Scala 2.12)","description":"Cats core library for functional programming in Scala, targeting Scala.js 0.6 and Scala 2.12.","status":"active","version":"2.1.1","language":"java","source_language":null,"source_url":"https://github.com/typelevel/cats","tags":["cats","functional","scala","scalajs","typelevel"],"install":[{"cmd":"<dependency>\n  <groupId>org.typelevel</groupId>\n  <artifactId>cats-core_sjs0.6_2.12</artifactId>\n  <version>2.1.1</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.typelevel:cats-core_sjs0.6_2.12:2.1.1'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"Validated","correct":"cats.data.Validated"}],"quickstart":{"code":"import cats.data.Validated\nimport cats.implicits._\n\nval result: Validated[String, Int] = Validated.valid(42)\nprintln(result)","lang":"scala","description":"Uses Cats Validated for functional error handling."},"warnings":[{"fix":"Use cats-core_2.13 or cats-core_3 for modern Scala; use cats-core_sjs1 for Scala.js 1.x.","message":"This artifact is for Scala.js 0.6 and Scala 2.12 only; not compatible with newer Scala versions or Scala.js 1.x.","severity":"breaking","affected_versions":"*"}],"env_vars":null,"search_vec":"'0.6':4,17 '2.12':6,20 'cat':1,7,21 'core':2,8 'function':11,22 'librari':9 'program':12 'scala':5,14,19,23 'scala.js':3,16 'scalaj':24 'target':15 'typelevel':25","created_at":"2026-06-15T10:14:38.899377+00:00","updated_at":"2026-06-15T10:14:38.899377+00:00","problems":[],"ecosystem":"maven","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://github.com/typelevel/cats","github":"https://github.com/typelevel/cats","docs":"https://appdoc.app/artifact/org.typelevel/cats-core_sjs0.6_2.12/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["utility"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-15","next_check":"2026-12-12","install_tag":null}}