diff --git a/build.sh b/build.sh
index f5e657f..3ae3b83 100755
--- a/build.sh
+++ b/build.sh
@@ -12,8 +12,6 @@ cd ffprobe-wasm-app
 docker-compose run ffprobe-wasm make
 cd ..
 cp -R ffprobe-wasm-app/dist dist
-mv dist/ffprobe-wasm.js dist/ffprobe-wasm.mjs
-node scripts/replace.js
 cp src/*.d.* dist
 
 # Build browser/node workers
diff --git a/scripts/replace.js b/scripts/replace.js
deleted file mode 100644
index b7aa25d..0000000
--- a/scripts/replace.js
+++ /dev/null
@@ -1,27 +0,0 @@
-const { readFile, writeFile } = require("fs/promises");
-const { dirname, resolve } = require("path");
-
-main();
-
-async function main() {
-  const root = dirname(__dirname);
-
-  const wasmJsPath = resolve(root, "dist/ffprobe-wasm.mjs");
-
-  let content = await readFile(wasmJsPath, { encoding: "utf8" });
-
-  content = `\
-import initWasmInstance from "./ffprobe-wasm.wasm";
-const initWasm = (info) =>
-  initWasmInstance(info).then((exports) => ({ instance: { exports } }));
-${content}`;
-
-  content = content.replace(`import.meta.url`, `''`);
-
-  content = content.replace(
-    `instantiateAsync().catch(readyPromiseReject)`,
-    `initWasm(info).then(receiveInstantiatedSource, readyPromiseReject)`
-  );
-
-  await writeFile(wasmJsPath, content, { encoding: "utf8" });
-}
diff --git a/vite.config.ts b/vite.config.ts
index d386970..108e07b 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -21,18 +21,11 @@ export default defineConfig({
     wasm(),
     topLevelAwait()
   ],
-  // worker: {
-  //   plugins: [
-  //     // {
-  //     //   name: "append-source-url",
-  //     //   generateBundle(options, bundle) {
-  //     //     Object.entries(bundle).forEach(([file, output]) => {
-  //     //       if (output.type === "chunk") {
-  //     //         output.code += `\n//# sourceURL=${file}`;
-  //     //       }
-  //     //     });
-  //     //   },
-  //     // },
-  //   ],
-  // },
+  worker: {
+    plugins: () => [
+      wasm(),
+      topLevelAwait(),
+    ],
+    format: "es"
+  },
 });