diff --git a/implementations/javascript/packages/schema/rollup.config.js b/implementations/javascript/packages/schema/rollup.config.js
index ba33f5b..d4e11db 100644
--- a/implementations/javascript/packages/schema/rollup.config.js
+++ b/implementations/javascript/packages/schema/rollup.config.js
@@ -38,12 +38,7 @@ export default [{
   input: 'lib/bin/preserves-schema-ts.js',
   output: [{
     file: 'dist/bin/preserves-schema-ts.js',
-    format: 'umd',
-    name: 'PreservesSchemaTS',
-    globals: {
-      'fs': 'fs',
-      '@preserves/core': 'Preserves',
-    },
+    format: 'commonjs',
   }],
-  external: ['fs', '@preserves/core'],
+  external: ['fs', 'path', 'glob', 'yargs/yargs', '@preserves/core'],
 }]