feat: Add pre-release support

README.md

@@ -29,6 +29,8 @@ This action will bump version, tag commit and generate a changelog with conventi
 - **Optional** `pre-changelog-generation`: Path to the pre-changelog-generation script file. No hook by default.
 - **Optional** `skip-ci`: Adds instruction to Github to not consider the push something to rebuild. Default `true`.
 - **Optional** `create-summary`: Adds the generated changelog as Action Summary. Default `false`.
+- **Optional** `pre-release`: Marks the release as pre-release. Default `false`.
+- **Optional** `pre-release-identifier`: The identifier to use for the pre-release. Default `rc`.
 
 ### Pre-Commit hook
 

action.yml

@@ -44,7 +44,7 @@ inputs:
   git-branch:
     description: 'The git branch to be pushed'
     default: ${{ github.ref }}
-    required: false    
+    required: false
 
   preset:
     description: 'The preset from Conventional Changelog to use'
@@ -80,7 +80,7 @@ inputs:
     description: 'Do not pull the repo before tagging. Ensure you full cloned the repo in the first place to get tags'
     default: 'false'
     required: false
-  
+
   skip-on-empty:
     description: 'Do nothing when the changelog from the latest release is empty'
     default: 'true'
@@ -133,6 +133,16 @@ inputs:
     default: 'false'
     required: false
 
+  pre-release:
+    description: 'Marks the release as pre-release'
+    default: 'false'
+    required: false
+
+  pre-release-identifier:
+    description: 'The identifier to use for pre-releases'
+    default: 'rc'
+    required: false
+
 outputs:
   changelog:
     description: 'The generated changelog for the new version'

src/helpers/bumpVersion.js

@@ -1,5 +1,5 @@
 const core = require('@actions/core')
-const semverValid = require('semver').valid
+const semver = require('semver')
 
 const requireScript = require('./requireScript')
 
@@ -11,45 +11,28 @@ const requireScript = require('./requireScript')
  * @returns {string}
  */
 module.exports = async (releaseType, version) => {
-  let major, minor, patch
+  let newVersion
+
+  const prerelease = core.getBooleanInput('pre-release')
+  const identifier = core.getInput('pre-release-identifier')
 
   if (version) {
-    [major, minor, patch] = version.split('.')
-
-    switch (releaseType) {
-      case 'major':
-        major = parseInt(major, 10) + 1
-        minor = 0
-        patch = 0
-        break
-
-      case 'minor':
-        minor = parseInt(minor, 10) + 1
-        patch = 0
-        break
-
-      default:
-        patch = parseInt(patch, 10) + 1
-    }
+    newVersion = semver.inc(version, (prerelease ? 'prerelease' : releaseType), identifier)
   } else {
-    let version = semverValid(core.getInput('fallback-version'))
+    let version = semver.valid(core.getInput('fallback-version'))
 
     if (version) {
-      [major, minor, patch] = version.split('.')
+      newVersion = version
     } else {
       // default
-      major = 0
-      minor = 1
-      patch = 0
+      newVersion = '0.1.0'
     }
 
-    core.info(`The version could not be detected, using fallback version '${major}.${minor}.${patch}'.`)
+    core.info(`The version could not be detected, using fallback version '${newVersion}'.`)
   }
 
   const preChangelogGenerationFile = core.getInput('pre-changelog-generation')
 
-  let newVersion = `${major}.${minor}.${patch}`
-
   if (preChangelogGenerationFile) {
     const preChangelogGenerationScript = requireScript(preChangelogGenerationFile)
 

src/helpers/generateChangelog.js

@@ -10,13 +10,15 @@ const conventionalChangelog = require('conventional-changelog')
  * @param releaseCount
  * @param config
  * @param gitPath
+ * @param skipUnstable
  * @returns {*}
  */
-const getChangelogStream = (tagPrefix, preset, version, releaseCount, config, gitPath) => conventionalChangelog({
+const getChangelogStream = (tagPrefix, preset, version, releaseCount, config, gitPath, skipUnstable) => conventionalChangelog({
     preset,
     releaseCount: parseInt(releaseCount, 10),
     tagPrefix,
-    config
+    config,
+    skipUnstable
   },
   {
     version,
@@ -40,10 +42,11 @@ module.exports = getChangelogStream
  * @param releaseCount
  * @param config
  * @param gitPath
+ * @param skipUnstable
  * @returns {Promise<string>}
  */
-module.exports.generateStringChangelog = (tagPrefix, preset, version, releaseCount, config, gitPath) => new Promise((resolve, reject) => {
-  const changelogStream = getChangelogStream(tagPrefix, preset, version, releaseCount, config, gitPath)
+module.exports.generateStringChangelog = (tagPrefix, preset, version, releaseCount, config, gitPath, skipUnstable) => new Promise((resolve, reject) => {
+  const changelogStream = getChangelogStream(tagPrefix, preset, version, releaseCount, config, gitPath, skipUnstable)
 
   let changelog = ''
 

src/index.js

@@ -47,6 +47,7 @@ async function run() {
     const gitPath = core.getInput('git-path')
     const skipCi = core.getBooleanInput('skip-ci')
     const createSummary = core.getBooleanInput('create-summary')
+    const prerelease = core.getBooleanInput('pre-release')
 
     if (skipCi) {
       gitCommitMessage += ' [skip ci]'
@@ -84,7 +85,7 @@ async function run() {
 
     const config = conventionalConfigFile && requireScript(conventionalConfigFile)
 
-    conventionalRecommendedBump({ preset, tagPrefix, config }, async (error, recommendation) => {
+    conventionalRecommendedBump({ preset, tagPrefix, config, skipUnstable: !prerelease }, async (error, recommendation) => {
       if (error) {
         core.setFailed(error.message)
         return
@@ -146,7 +147,7 @@ async function run() {
       }
 
       // Generate the string changelog
-      const stringChangelog = await changelog.generateStringChangelog(tagPrefix, preset, newVersion, 1, config, gitPath)
+      const stringChangelog = await changelog.generateStringChangelog(tagPrefix, preset, newVersion, 1, config, gitPath, !prerelease)
       core.info('Changelog generated')
       core.info(stringChangelog)
 

src/version/git.js

@@ -9,8 +9,9 @@ module.exports = class Git extends BaseVersioning {
   bump = (releaseType) => {
     return new Promise((resolve) => {
       const tagPrefix = core.getInput('tag-prefix')
+      const prerelease = core.getBooleanInput('pre-release')
 
-      gitSemverTags({ tagPrefix, }, async (err, tags) => {
+      gitSemverTags({ tagPrefix, skipUnstable: !prerelease }, async (err, tags) => {
         const currentVersion = tags.length > 0 ? tags.shift().replace(tagPrefix, '') : null
 
         // Get the new version