{"source":"https://contributable.vercel.app","licence":"CC BY 4.0","methodology":"https://contributable.vercel.app/methodology","v":2,"owner":"typelevel","name":"cats","updatedAt":"2026-10-11T05:40:03.779Z","coveredSince":"2025-10-04T15:18:24.842Z","facts":{"owner":"typelevel","name":"cats","description":"Lightweight, modular, and extensible library for functional programming.","stars":5472,"forks":1243,"archived":false,"isFork":false,"license":"NOASSERTION","defaultBranch":"main","pushedAt":"2026-09-22T20:36:21Z","createdAt":"2015-01-28T20:26:48Z","topics":[],"languages":{"Scala":3710719,"Awk":1529,"Nix":783},"frameworks":[],"commits90d":32,"releases365d":0,"lastReleaseAt":"2025-01-20T19:03:39Z","gettingStarted":{"contributing":true,"codeOfConduct":true,"issueTemplates":false,"devcontainer":false,"cla":"none","channels":[{"kind":"discord","url":"https://discord.gg/XF3CXcMzqD"}],"policy":null}},"metrics":{"computedAt":"2026-10-11T05:40:03.779Z","outsidePulls":{"cohort":{"n":9,"merged":5,"closedUnmerged":1,"open":3,"mergeRate":0.8333333333333334,"openShare":0.3333333333333333,"evidence":{"merged":[4903,4902,4876,4875,4874],"closedUnmerged":[4890],"open":[4904,4893,4881]}},"firstTimers":{"n":4,"merged":2,"closedUnmerged":1,"open":1,"mergeRate":null,"openShare":null,"evidence":{"merged":[4876,4874],"closedUnmerged":[4890],"open":[4893]}},"year":{"n":35,"merged":17,"closedUnmerged":4,"open":14,"mergeRate":0.8095238095238095,"openShare":0.4,"evidence":{"merged":[4903,4902,4876,4875,4874,4864,4860,4859,4844,4841,4839,4824,4806,4805,4803,4801,4782],"closedUnmerged":[4890,4854,4843,4813],"open":[4904,4893,4881,4862,4855,4842,4836,4834,4827,4826,4825,4823,4791,4786]}}},"pullFirstResponse":{"n":9,"answered":8,"waiting":1,"medianHours":6.752222222222223,"p75Hours":69.47444444444444,"within48h":0.6666666666666666,"within7d":0.7777777777777777,"curve":[{"hours":1.0619444444444444,"waiting":0.8888888888888888},{"hours":2.0905555555555555,"waiting":0.7777777777777777},{"hours":2.9608333333333334,"waiting":0.6666666666666666},{"hours":4.472777777777778,"waiting":0.5555555555555556},{"hours":6.752222222222223,"waiting":0.4444444444444445},{"hours":8.655555555555555,"waiting":0.33333333333333337},{"hours":69.47444444444444,"waiting":0.22222222222222227},{"hours":951.1425,"waiting":0.11111111111111113}],"evidence":{"answered":[4904,4903,4902,4893,4890,4876,4875,4874],"waiting":[4881]}},"timeToMerge":{"n":9,"merged":5,"medianHours":2342.286666666667,"evidence":[4903,4902,4876,4875,4874]},"issueFirstResponse":{"n":0,"answered":0,"waiting":0,"medianHours":null,"p75Hours":null,"within48h":null,"within7d":null,"curve":[],"evidence":{"answered":[],"waiting":[]}},"starter":{"counts":{"available":0,"claimed":0,"in-progress":3,"stale":6},"helpWantedAvailable":0,"issues":[{"n":4258,"title":"Benchmark `Apply.TraverseStrategy` concept","state":"stale","label":"beginner","createdAt":"2022-06-26T22:06:09Z","updatedAt":"2026-03-01T05:20:43Z"},{"n":4147,"title":"typeclass-based collections implementations","state":"in-progress","label":"help-wanted","createdAt":"2022-03-09T18:04:11Z","updatedAt":"2022-08-22T13:20:20Z"},{"n":3751,"title":"Clean out warnings from Dotty","state":"stale","label":"beginner","createdAt":"2021-01-30T10:09:29Z","updatedAt":"2023-10-29T00:15:48Z"},{"n":3523,"title":"Add a documentation page on error handling","state":"stale","label":"help-wanted","createdAt":"2020-07-16T14:23:30Z","updatedAt":"2020-10-18T19:34:48Z"},{"n":2936,"title":"Add `attemptOption` to Alternative","state":"in-progress","label":"beginner","createdAt":"2019-07-09T23:06:26Z","updatedAt":"2025-01-22T13:29:52Z"},{"n":2650,"title":"Improve doc for Func","state":"in-progress","label":"beginner","createdAt":"2018-11-30T17:19:13Z","updatedAt":"2023-01-15T18:01:08Z"},{"n":1935,"title":"Add Divisible and Decideable (contravariant Applicative and co.)","state":"in-progress","label":"help-wanted","createdAt":"2017-09-27T04:44:40Z","updatedAt":"2018-12-19T16:13:45Z"},{"n":1835,"title":"Style scaladoc slightly","state":"stale","label":"beginner","createdAt":"2017-08-21T15:19:26Z","updatedAt":"2020-04-25T00:00:52Z"},{"n":1801,"title":"Documentation megathread","state":"in-progress","label":"beginner","createdAt":"2017-08-08T17:53:49Z","updatedAt":"2022-06-21T15:09:19Z"},{"n":1587,"title":"Transitions in docs","state":"stale","label":"beginner","createdAt":"2017-04-04T16:39:42Z","updatedAt":"2017-04-04T16:50:44Z"},{"n":403,"title":"Curate order of type class list in docs","state":"stale","label":"beginner","createdAt":"2015-07-13T12:06:55Z","updatedAt":"2016-06-19T17:39:15Z"},{"n":387,"title":"Add StateT and trampolining to State documentation","state":"stale","label":"beginner","createdAt":"2015-06-29T13:00:44Z","updatedAt":"2017-06-13T14:20:18Z"}]},"responseWindow":{"hours":[0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,1,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0],"people":4,"replies":12},"activeMaintainers":7},"series":[{"week":"2025-10-12","opened":0,"merged":0,"answered7d":0,"activity":5},{"week":"2025-10-19","opened":1,"merged":1,"answered7d":1,"activity":6},{"week":"2025-10-26","opened":1,"merged":0,"answered7d":1,"activity":1},{"week":"2025-11-02","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2025-11-09","opened":1,"merged":0,"answered7d":1,"activity":5},{"week":"2025-11-16","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2025-11-23","opened":0,"merged":0,"answered7d":0,"activity":5},{"week":"2025-11-30","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2025-12-07","opened":0,"merged":0,"answered7d":0,"activity":1},{"week":"2025-12-14","opened":2,"merged":2,"answered7d":2,"activity":4},{"week":"2025-12-21","opened":1,"merged":1,"answered7d":1,"activity":4},{"week":"2025-12-28","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2026-01-04","opened":1,"merged":1,"answered7d":1,"activity":1},{"week":"2026-01-11","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-01-18","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-01-25","opened":1,"merged":0,"answered7d":0,"activity":7},{"week":"2026-02-01","opened":0,"merged":0,"answered7d":0,"activity":1},{"week":"2026-02-08","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-02-15","opened":5,"merged":1,"answered7d":2,"activity":6},{"week":"2026-02-22","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-03-01","opened":4,"merged":2,"answered7d":4,"activity":7},{"week":"2026-03-08","opened":3,"merged":1,"answered7d":2,"activity":8},{"week":"2026-03-15","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-03-22","opened":0,"merged":0,"answered7d":0,"activity":4},{"week":"2026-03-29","opened":0,"merged":0,"answered7d":0,"activity":1},{"week":"2026-04-05","opened":0,"merged":0,"answered7d":0,"activity":4},{"week":"2026-04-12","opened":0,"merged":0,"answered7d":0,"activity":4},{"week":"2026-04-19","opened":2,"merged":0,"answered7d":1,"activity":3},{"week":"2026-04-26","opened":0,"merged":0,"answered7d":0,"activity":2},{"week":"2026-05-03","opened":2,"merged":2,"answered7d":2,"activity":4},{"week":"2026-05-10","opened":1,"merged":0,"answered7d":1,"activity":2},{"week":"2026-05-17","opened":1,"merged":1,"answered7d":0,"activity":5},{"week":"2026-05-24","opened":0,"merged":0,"answered7d":0,"activity":1},{"week":"2026-05-31","opened":0,"merged":0,"answered7d":0,"activity":2},{"week":"2026-06-07","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-06-14","opened":3,"merged":3,"answered7d":3,"activity":11},{"week":"2026-06-21","opened":0,"merged":0,"answered7d":0,"activity":1},{"week":"2026-06-28","opened":0,"merged":0,"answered7d":0,"activity":1},{"week":"2026-07-05","opened":1,"merged":0,"answered7d":0,"activity":4},{"week":"2026-07-12","opened":0,"merged":0,"answered7d":0,"activity":9},{"week":"2026-07-19","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2026-07-26","opened":0,"merged":0,"answered7d":0,"activity":2},{"week":"2026-08-02","opened":2,"merged":0,"answered7d":1,"activity":6},{"week":"2026-08-09","opened":0,"merged":0,"answered7d":0,"activity":2},{"week":"2026-08-16","opened":0,"merged":0,"answered7d":0,"activity":2},{"week":"2026-08-23","opened":0,"merged":0,"answered7d":0,"activity":3},{"week":"2026-08-30","opened":0,"merged":0,"answered7d":0,"activity":4},{"week":"2026-09-06","opened":3,"merged":2,"answered7d":3,"activity":3},{"week":"2026-09-13","opened":2,"merged":1,"answered7d":2,"activity":5},{"week":"2026-09-20","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2026-09-27","opened":0,"merged":0,"answered7d":0,"activity":0},{"week":"2026-10-04","opened":1,"merged":0,"answered7d":0,"activity":1}],"trend":{"flag":"unknown","recentMedianHours":null,"previousMedianHours":null,"recentN":3,"previousN":3,"openedThisWeek":1,"openedLastWeek":0},"programs":[{"program":"gsoc","slug":"typelevel","name":"Typelevel","years":[2025,2026]}]}