feat: Add release-id output (#101)

Author: ardalanamini

README.md

@@ -19,6 +19,7 @@ Automatic Changelog generator
 - [Outputs](#outputs)
   - [Changelog](#changelog)
   - [Pre-release](#prerelease)
+  - [Release ID](#release-id)
 - [Example Usage](#example-usage)
 
 ## Usage
@@ -180,6 +181,12 @@ Indicates whether it's a pre-release or not.
 
 > if semver is set to `true`, otherwise this output will always return `false`.
 
+#### `release-id`
+
+The pre-release id in case of prerelease being `true`, `latest` otherwise. (e.g. `alpha`, `beta`, `rc`, `canary`)
+
+> if semver is set to `true`, otherwise this output will always return `latest`.
+
 ### Example Usage
 
 Using with default inputs:

action.yml

@@ -72,6 +72,9 @@ outputs:
   prerelease:
     description: Indicates whether it's a pre-release or not (if semver is set to true, otherwise this output will always return false)
 
+  release-id:
+    description: The pre-release id in case of prerelease being true, latest otherwise (if semver is set to true, otherwise this output will always return latest)
+
 runs:
   using: node16
   main: action/index.js

action/index.js

@@ -30,8 +30,12 @@ async function run(): Promise<void> {
   }
 
   let prerelease = false;
+  let releaseId = "latest";
 
-  if (semver != null) prerelease = semver.prerelease.length > 0;
+  if (semver != null) {
+    prerelease = semver.prerelease.length > 0;
+    releaseId = semver.prerelease[0] as string;
+  }
 
   const { sha: tagRef, name: tagName } = await getTagSha({
     octokit,
@@ -74,6 +78,10 @@ async function run(): Promise<void> {
 
   setOutput("prerelease", prerelease);
 
+  info(`-> release-id: ${ releaseId }`);
+
+  setOutput("release-id", releaseId);
+
   info(`-> changelog: "${ changelog }"`);
 
   setOutput("changelog", changelog);