diff --git a/apps/server/src/services/script.spec.ts b/apps/server/src/services/script.spec.ts
index ec9158b1d..f7d69688b 100644
--- a/apps/server/src/services/script.spec.ts
+++ b/apps/server/src/services/script.spec.ts
@@ -95,7 +95,7 @@ describe("JSX building", () => {
             }
         `;
         const expected = trimIndentation`\
-            const _jsxFileName = "";function MyComponent() {
+            "use strict";const _jsxFileName = "";function MyComponent() {
                 return api.preact.h('p', {__self: this, __source: {fileName: _jsxFileName, lineNumber: 2}}, "Hello world." );
             }
         `;
@@ -112,7 +112,7 @@ describe("JSX building", () => {
             }
         `;
         const expected = trimIndentation`\
-            const _jsxFileName = "";function MyComponent() {
+            "use strict";const _jsxFileName = "";function MyComponent() {
                 return api.preact.h(api.preact.Fragment, null
                     , api.preact.h('p', {__self: this, __source: {fileName: _jsxFileName, lineNumber: 3}}, "Hi")
                     , api.preact.h('p', {__self: this, __source: {fileName: _jsxFileName, lineNumber: 4}}, "there")
@@ -121,4 +121,28 @@ describe("JSX building", () => {
         `;
         expect(buildJsx(script).code).toStrictEqual(expected);
     });
+
+    it("rewrites export", () => {
+        const script = trimIndentation`\
+            const { defineWidget } = api.preact;
+
+            export default defineWidget({
+                parent: "right-pane",
+                render() {
+                    return <></>;
+                }
+            });
+        `;
+        const expected = trimIndentation`\
+            "use strict";Object.defineProperty(exports, "__esModule", {value: true});const { defineWidget } = api.preact;
+
+            module.exports = defineWidget({
+                parent: "right-pane",
+                render() {
+                    return api.preact.h(api.preact.Fragment, null);
+                }
+            });
+        `;
+        expect(buildJsx(script).code).toStrictEqual(expected);
+    });
 });
diff --git a/apps/server/src/services/script.ts b/apps/server/src/services/script.ts
index b7fff617c..bf65c448f 100644
--- a/apps/server/src/services/script.ts
+++ b/apps/server/src/services/script.ts
@@ -220,11 +220,17 @@ return module.exports;
 
 export function buildJsx(contentRaw: string | Buffer) {
     const content = Buffer.isBuffer(contentRaw) ? contentRaw.toString("utf-8") : contentRaw;
-    return transform(content, {
-        transforms: ["jsx"],
+    const output = transform(content, {
+        transforms: ["jsx", "imports"],
         jsxPragma: "api.preact.h",
         jsxFragmentPragma: "api.preact.Fragment",
     });
+
+    output.code = output.code.replaceAll(
+        /\bexports\s*\.\s*default\s*=\s*/g,
+        'module.exports = '
+    );
+    return output;
 }
 
 function sanitizeVariableName(str: string) {