first try

package.json

@@ -8,6 +8,7 @@
     "antd": "3.26.7",
     "markdown-to-jsx": "6.10.3",
     "query-string": "6.10.1",
+    "ramda": "^0.26.1",
     "react": "16.12.0",
     "react-content-loader": "4.3.4",
     "react-diff-view": "2.4.1",
@@ -51,4 +52,4 @@
       "last 1 safari version"
     ]
   }
-}
+}

src/components/common/VersionSelector.js

@@ -3,6 +3,8 @@ import styled from 'styled-components'
 import { Button, Popover } from 'antd'
 import semver from 'semver/preload'
 import queryString from 'query-string'
+import R from 'ramda'
+
 import { RELEASES_URL } from '../../utils'
 import { Select } from './'
 
@@ -106,23 +108,43 @@ const getReleasedVersionsWithCandidates = ({
   })
 }
 
-const getReleasedVersions = ({ releasedVersions, minVersion, maxVersion }) => {
-  const latestMajorReleaseVersion = getLatestMajorReleaseVersion(
-    releasedVersions
-  )
-
-  const isVersionAReleaseAndOfLatest = version =>
-    version.includes('rc') &&
-    semver.valid(semver.coerce(version)) === latestMajorReleaseVersion
+export const isRC = release => release.includes('rc')
+
+export const filterReleases = (
+  releases,
+  { showRCs = 'all', minVersion, maxVersion } // defaults should be whatever will return the same results as the input
+) => {
+  let filteredReleases = releases
+
+  switch (showRCs) {
+    case 'all':
+      break
+    case 'latest': {
+      let latestRelease = filteredReleases[0]
+      let earliestLatestReleaseIndex = R.findIndex(
+        release =>
+          semver.compare(
+            semver.coerce(release),
+            semver.coerce(latestRelease)
+          ) !== 0
+      )(filteredReleases)
+
+      let [latest, rest] = R.splitAt(
+        earliestLatestReleaseIndex,
+        filteredReleases
+      )
+      rest = R.reject(isRC)(rest)
+      filteredReleases = R.concat(latest, rest)
+      break
+    }
+    case 'none':
+      filteredReleases = R.reject(isRC)(filteredReleases)
+      break
+    default:
+      break
+  }
 
-  return releasedVersions.filter(
-    releasedVersion =>
-      releasedVersion.length > 0 &&
-      ((maxVersion && semver.lt(releasedVersion, maxVersion)) ||
-        (minVersion &&
-          semver.gt(releasedVersion, minVersion) &&
-          !isVersionAReleaseAndOfLatest(releasedVersion)))
-  )
+  return filteredReleases
 }
 
 // Finds the first minor release (which in react-native is the major) when compared to another version
@@ -214,16 +236,10 @@ const VersionSelector = ({ showDiff, showReleaseCandidates }) => {
           })
 
       setFromVersionList(
-        getReleasedVersions({
-          releasedVersions: sanitizedVersions,
-          maxVersion: toVersionToBeSet
-        })
+        filterReleases(sanitizedVersions, { maxVersion: toVersionToBeSet })
       )
       setToVersionList(
-        getReleasedVersions({
-          releasedVersions: sanitizedVersions,
-          minVersion: fromVersionToBeSet
-        })
+        filterReleases(sanitizedVersions, { minVersion: fromVersionToBeSet })
       )
 
       setLocalFromVersion(fromVersionToBeSet)
@@ -249,16 +265,10 @@ const VersionSelector = ({ showDiff, showReleaseCandidates }) => {
     }
 
     setFromVersionList(
-      getReleasedVersions({
-        releasedVersions: allVersions,
-        maxVersion: localToVersion
-      })
+      filterReleases(allVersions, { maxVersion: localToVersion })
     )
     setToVersionList(
-      getReleasedVersions({
-        releasedVersions: allVersions,
-        minVersion: localFromVersion
-      })
+      filterReleases(allVersions, { minVersion: localFromVersion })
     )
   }, [
     isLoading,

src/components/common/VersionSelector.test.js

@@ -0,0 +1,45 @@
+import R from 'ramda'
+
+import { filterReleases, isRC } from './VersionSelector'
+
+describe('rc checker', () => {
+  it('should detect rc releases correctly', () => {
+    expect(isRC('0.62.0')).toBe(false)
+    expect(isRC('0.62.0-rc.0')).toBe(true)
+  })
+})
+
+const releases = [
+  '0.63.2-rc.1',
+  '0.63.2-rc.0',
+  '0.63.1',
+  '0.63.0',
+  '0.62.4',
+  '0.62.4-rc.1',
+  '0.62.4-rc.0',
+  '0.62.3',
+  '0.62.1',
+  '0.62.0',
+  '0.62.0-rc.1',
+  '0.61.3'
+]
+const releasesNoRCs = R.reject(isRC)(releases)
+// console.log(releasesNoRCs)
+const releasesNoRCsWithLatestReleaseRCs = [
+  '0.63.2-rc.1',
+  '0.63.2-rc.0',
+  ...releasesNoRCs
+]
+
+describe('release filtering', () => {
+  it('should return the correct releases', () => {
+    // expect(filterReleases(releasesWithRCs)).toBe(releasesWithRCs)
+    expect(filterReleases(releases, {})).toEqual(releases)
+
+    expect(filterReleases(releases, { showRCs: 'all' })).toEqual(releases)
+    expect(filterReleases(releases, { showRCs: 'none' })).toEqual(releasesNoRCs)
+    expect(filterReleases(releases, { showRCs: 'latest' })).toEqual(
+      releasesNoRCsWithLatestReleaseRCs
+    )
+  })
+})

yarn.lock

@@ -8648,6 +8648,11 @@ raf@^3.4.0, raf@^3.4.1:
   dependencies:
     performance-now "^2.1.0"
 
+ramda@^0.26.1:
+  version "0.26.1"
+  resolved "https://registry.yarnpkg.com/ramda/-/ramda-0.26.1.tgz#8d41351eb8111c55353617fc3bbffad8e4d35d06"
+  integrity sha512-hLWjpy7EnsDBb0p+Z3B7rPi3GDeRG5ZtiI33kJhTt+ORCd38AbAIjB/9zRIUoeTbE/AVX5ZkU7m6bznsvrf8eQ==
+
 randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"