diff --git a/apps/proxy/src/routes/svgShape.ts b/apps/proxy/src/routes/svgShape.ts
index 0e1fd7d..b6d7b8d 100644
--- a/apps/proxy/src/routes/svgShape.ts
+++ b/apps/proxy/src/routes/svgShape.ts
@@ -1,7 +1,12 @@
-import * as ClipperLib from 'clipper-lib';
+import { createRequire } from 'module';
 import svgpath from 'svgpath';
 import type { TracedShape } from '@tts/shared';
 
+// clipper-lib is a CommonJS package; load it via require so the enums and
+// classes resolve under Node's native ESM loader without a `default` unwrap.
+const require = createRequire(import.meta.url);
+const ClipperLib = require('clipper-lib') as typeof import('clipper-lib');
+
 /** Number of samples per cubic bezier when flattening curves to polylines. */
 const CURVE_STEPS = 12;