added program end

src/index.ts

@@ -29,6 +29,10 @@ async function main (): Promise<void> {
   await theclinic(null, context, () => {});
 }
 
-main().catch((err) => {
-  console.error(err)
-});
+main()
+  .then(() => {
+    process.exit(0);
+  })
+  .catch((err) => {
+    console.error(err)
+  });