fix redis-worker

Author: carderne

packages/redis-worker/tsdown.config.ts

@@ -24,11 +24,25 @@ export default defineConfig({
       neverBundle: [/^@internal/],
     },
   },
-  banner: ({ format }) => {
-    if (format !== "esm") return;
-
-    return {
-      js: `import { createRequire } from 'module'; const require = createRequire(import.meta.url || process.cwd() + '/index.js');`,
-    };
-  },
+  // rolldown injects its own `__require` helper in the ESM output as
+  // `createRequire(import.meta.url)` with no fallback. When this ESM bundle is
+  // re-bundled into a CJS consumer (e.g. the webapp server), esbuild replaces
+  // `import.meta.url` with `undefined`, so `createRequire(undefined)` throws at
+  // startup. Patch the helper to fall back to a valid path, matching the
+  // fallback the previous tsup banner provided.
+  plugins: [
+    {
+      name: "resilient-create-require",
+      renderChunk(code: string) {
+        if (!code.includes("createRequire(import.meta.url)")) return null;
+        return {
+          code: code.replaceAll(
+            "createRequire(import.meta.url)",
+            "createRequire(import.meta.url || process.cwd() + '/index.js')"
+          ),
+          map: null,
+        };
+      },
+    },
+  ],
 });