diff --git a/frontend/packages/admin/src/utils/index.ts b/frontend/packages/admin/src/utils/index.ts
index 3176835..00f39fc 100644
--- a/frontend/packages/admin/src/utils/index.ts
+++ b/frontend/packages/admin/src/utils/index.ts
@@ -1,4 +1,4 @@
-export { downloadLearnware } from "./download.js";
-export { fetchex } from "./fetchex.js";
-export { default as saveContentToFile } from "./saveContentToFile.js";
-export { hex_md5 } from "./encrypt.js";
+export { downloadLearnware } from "./download";
+export { fetchex } from "./fetchex";
+export { default as saveContentToFile } from "@main/utils/saveContentToFile";
+export { hex_md5 } from "./encrypt";
diff --git a/frontend/packages/main/src/utils/index.ts b/frontend/packages/main/src/utils/index.ts
index 9a6b278..5cbcbd5 100644
--- a/frontend/packages/main/src/utils/index.ts
+++ b/frontend/packages/main/src/utils/index.ts
@@ -1,5 +1,6 @@
-export { downloadLearnwareSync } from "./download.js";
-export { hex_md5 } from "./encrypt.js";
-export { verifyLearnware } from "./verifyLearnware.js";
-export { promiseReadFile } from "./promiseReadFile.js";
-export { debounce, throttle } from "./control.js";
+export { downloadLearnwareSync } from "./download";
+export { hex_md5 } from "./encrypt";
+export { verifyLearnware } from "./verifyLearnware";
+export { promiseReadFile } from "./promiseReadFile";
+export { debounce, throttle } from "./control";
+export { default as saveContentToFile } from "./saveContentToFile";
diff --git a/frontend/packages/admin/src/utils/saveContentToFile.ts b/frontend/packages/main/src/utils/saveContentToFile.ts
similarity index 100%
rename from frontend/packages/admin/src/utils/saveContentToFile.ts
rename to frontend/packages/main/src/utils/saveContentToFile.ts