diff --git a/crates/swc_ecma_transforms_compat/tests/async-to-generator/issue-4486/1/exec.js b/crates/swc_ecma_transforms_compat/tests/async-to-generator/issue-4486/1/exec.js
new file mode 100644
index 00000000000..5898690e31a
--- /dev/null
+++ b/crates/swc_ecma_transforms_compat/tests/async-to-generator/issue-4486/1/exec.js
@@ -0,0 +1,26 @@
+const obj = {
+    a: 'a',
+    b: 'b',
+    c: 'c',
+    d: 'd',
+}
+
+const wait = n => new Promise(r => setTimeout(r, n))
+
+const action = async () => {
+
+    for (let i in obj) {
+
+        // halt for a second
+        await wait(1000)
+
+        // this one is trouble
+        wait(1000).then(() => console.log(i))
+
+    }
+
+    console.log('done')
+}
+
+
+action()
\ No newline at end of file