- introduce more output values, and a more detailed description

README.md

@@ -51,7 +51,6 @@ Specify the action as part of your GitHub actions workflow:
 ```yml
 - name: "Build Changelog"
   id: build_changelog
-  if: startsWith(github.ref, 'refs/tags/')
   uses: mikepenz/release-changelog-builder-action@{latest-release}
   env:
     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -61,13 +60,23 @@ By default the action will try to automatically retrieve the `tag` from the curr
 
 ### Action outputs
 
-The action will succeed and return the `changelog` as a step output. Use it in any follow up step by referencing via its id. For example `build_changelog`.
+After action execution it will return the `changelog` and additional information as step output. You can use it in any follow up step by referenceing the output by referencing it via the steps id. For example `build_changelog`.
 
 ```yml
 # ${{steps.{CHANGELOG_STEP_ID}.outputs.changelog}}
 ${{steps.build_changelog.outputs.changelog}}
 ```
 
+A full set list of possible output values for this action.
+
+| **Output**          | **Description**                                                                     |
+|---------------------|-------------------------------------------------------------------------------------|
+| `outputs.changelog` | The built release changelog built from the merged pull requests                     |
+| `outputs.owner`     | Specifies the owner of the repository processed                                     |
+| `outputs.repo`      | Describes the repository name, which was processed                                  |
+| `outputs.fromTag`   | Defines the `fromTag` which describes the lower bound to process pull requests for  |
+| `outputs.toTag`     | Defines the `toTag` which describes the upper bound to process pull request for     |
+
 ## Customization 🖍️
 
 ### Changelog Configuration

src/main.ts

@@ -89,6 +89,7 @@ async function run(): Promise<void> {
       core.error(`💥 Missing or couldn't resolve 'owner'`)
       return
     } else {
+      core.setOutput('owner', owner)
       core.debug(`Resolved 'owner' as ${owner}`)
     }
 
@@ -96,6 +97,7 @@ async function run(): Promise<void> {
       core.error(`💥 Missing or couldn't resolve 'owner'`)
       return
     } else {
+      core.setOutput('repo', repo)
       core.debug(`Resolved 'repo' as ${repo}`)
     }
 
@@ -103,6 +105,7 @@ async function run(): Promise<void> {
       core.error(`💥 Missing or couldn't resolve 'toTag'`)
       return
     } else {
+      core.setOutput('toTag', toTag)
       core.debug(`Resolved 'toTag' as ${toTag}`)
     }
     core.endGroup()

src/releaseNotes.ts

@@ -49,6 +49,13 @@ export class ReleaseNotes {
       core.endGroup()
     }
 
+    if (!this.options.fromTag) {
+      core.error(`💥 Missing or couldn't resolve 'fromTag'`)
+      return configuration.empty_template ?? DefaultConfiguration.empty_template
+    } else {
+      core.setOutput('fromTag', this.options.fromTag)
+    }
+
     core.startGroup(`🚀 Load pull requests`)
     const mergedPullRequests = await this.getMergedPullRequests(octokit)
     core.endGroup()