fix: always generate esm-compatibility banner

Author: gjuchault

scripts/build.ts

@@ -15,6 +15,15 @@ async function build() {
     external: [],
     bundle: true,
     entryPoints: [path.join(srcPath, "index.ts")],
+    banner: {
+      js: `
+            import { createRequire } from 'module';
+            import { fileURLToPath } from 'url';
+            const require = createRequire(import.meta.url);
+            const __filename = fileURLToPath(import.meta.url);
+            const __dirname = path.dirname(__filename);
+      `,
+    },
     outdir: buildPath,
   });
 }