feat: allow adding latest to other ci versions

Author: lukekarrys

lib/config.js

@@ -228,9 +228,11 @@ const getFullConfig = async ({
 
   if (pkgConfig.ciVersions) {
     let versions = pkgConfig.ciVersions
-    if (versions === 'latest') {
-      const defaultVersions = [rootPkgConfig, defaultConfig].find(c => Array.isArray(c.ciVersions))
-      versions = defaultVersions.ciVersions.slice(-1)
+    if (versions === 'latest' || (Array.isArray(versions) && versions.includes('latest'))) {
+      const { ciVersions } = [isWorkspace ? rootPkgConfig : {}, defaultConfig]
+        .find(c => Array.isArray(c.ciVersions))
+      const defaultLatest = ciVersions[ciVersions.length - 1]
+      versions = [].concat(versions).map(v => v === 'latest' ? defaultLatest : v)
     }
 
     const { targets, engines } = parseCIVersions(versions)

test/apply/engines.js

@@ -20,6 +20,26 @@ t.test('can set engines and ci separately', async (t) => {
   t.notOk(ci.includes('- 12'))
 })
 
+t.test('can set ci to latest plus other versions', async (t) => {
+  const s = await setup(t, {
+    package: {
+      templateOSS: {
+        ciVersions: ['6', '8', 'latest'],
+        engines: '*',
+      },
+    },
+  })
+  await s.apply()
+
+  const pkg = await s.readJson('package.json')
+  const ci = await s.readFile(join('.github', 'workflows', 'ci.yml'))
+
+  t.equal(pkg.engines.node, '*')
+  t.ok(ci.includes('- 6'))
+  t.ok(ci.includes('- 8'))
+  t.ok(ci.includes('- 18.x'))
+})
+
 t.test('latest ci versions', async (t) => {
   const s = await setup(t, {
     package: {