isActionRepo()

src/fs-helper.ts

@@ -91,6 +91,14 @@ export function isDirectory(dirPath: string): boolean {
   return fs.existsSync(dirPath) && fs.lstatSync(dirPath).isDirectory()
 }
 
+export function isActionRepo(stagingDir: string): boolean {
+  return (
+    fs.existsSync(path.join(stagingDir, 'action.yml')) ||
+    fs.existsSync(path.join(stagingDir, 'action.yaml'))
+  )
+}
+
+
 export function readFileContents(filePath: string): Buffer {
   return fs.readFileSync(filePath)
 }
@@ -116,6 +124,7 @@ export function bundleFilesintoDirectory(
   return targetDir
 }
 
+
 // Converts a file path to a filemetadata object by querying the fs for relevant metadata.
 async function fileMetadata(filePath: string): Promise<FileMetadata> {
   const stats = fs.statSync(filePath)

src/main.ts

@@ -65,6 +65,13 @@ export async function run(pathInput: string): Promise<void> {
       path = fsHelper.bundleFilesintoDirectory(paths, bundleDir)
     }
 
+    if (!fsHelper.isActionRepo(path)) {
+      core.setFailed(
+        'action.y(a)ml not found. Action packages can be created only for action repositories.'
+      )
+      return
+    }
+
     // Create a temporary directory to store the archives
     const archiveDir = fsHelper.createTempDir()
     tmpDirs.push(archiveDir)