Create JS action

rolldown.config.js

@@ -0,0 +1,15 @@
+import { defineConfig } from 'rolldown';
+
+export default defineConfig({
+  input: 'index.ts',
+  output: {
+    file: './index.js',
+    format: 'esm'
+  },
+  platform: 'node',
+  target: 'node20',
+  external: (id) => {
+    // Mark all node modules as external
+    return id.includes('node_modules') || id.startsWith('@actions/') || id.startsWith('node:');
+  }
+});