{"id":71698,"library":"fs2-core-sjs1-2-12","title":"FS2 Core (Scala.js 1.x, Scala 2.12)","description":"Functional streaming library for Scala, providing purely functional, composable, and type-safe streams.","status":"active","version":"3.13.0","language":"java","source_language":null,"source_url":"https://github.com/typelevel/fs2","tags":["streaming","functional","scala","fs2"],"install":[{"cmd":"<dependency>\n  <groupId>co.fs2</groupId>\n  <artifactId>fs2-core_sjs1_2.12</artifactId>\n  <version>3.13.0</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'co.fs2:fs2-core_sjs1_2.12:3.13.0'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"Stream","correct":"fs2.Stream"}],"quickstart":{"code":"import fs2.Stream\n\nobject Quickstart extends App {\n  val stream = Stream(1, 2, 3).map(_ * 2)\n  stream.compile.toList.foreach(println)\n}","lang":"scala","description":"Creates and transforms a simple stream."},"warnings":[{"fix":"Migrate from Task to IO and update resource management patterns; see migration guide at https://fs2.io/#/migration-guide-3.x.","message":"FS2 3.x has breaking changes from 2.x, including removal of Task and changes to resource handling.","severity":"breaking","affected_versions":">=3.0.0"}],"env_vars":null,"search_vec":"'1':4 '2.12':7 'compos':16 'core':2 'fs2':1,25 'function':8,15,23 'librari':10 'provid':13 'pure':14 'safe':20 'scala':6,12,24 'scala.js':3 'stream':9,21,22 'type':19 'type-saf':18 'x':5","created_at":"2026-06-17T18:30:31.030695+00:00","updated_at":"2026-06-17T18:30:31.030695+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://typelevel.org/fs2","github":"https://github.com/typelevel/fs2","docs":"https://appdoc.app/artifact/co.fs2/fs2-core_sjs1_2.12/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["other"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-17","next_check":"2026-12-14","install_tag":null}}