diff --git a/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration10/actual.js b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration10/actual.js
new file mode 100644
index 0000000000..7c26b9ed68
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration10/actual.js
@@ -0,0 +1 @@
+export async function foo() {}
diff --git a/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration10/expected.js b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration10/expected.js
new file mode 100644
index 0000000000..bfb64da594
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration10/expected.js
@@ -0,0 +1 @@
+export async function foo() {}
\ No newline at end of file
diff --git a/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration11/actual.js b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration11/actual.js
new file mode 100644
index 0000000000..b5d8066db5
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration11/actual.js
@@ -0,0 +1 @@
+export default async () => await foo()
diff --git a/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration11/expected.js b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration11/expected.js
new file mode 100644
index 0000000000..3bec97976a
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration11/expected.js
@@ -0,0 +1 @@
+export default (async () => await foo());
\ No newline at end of file
diff --git a/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration9/actual.js b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration9/actual.js
new file mode 100644
index 0000000000..8db00b63ab
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration9/actual.js
@@ -0,0 +1 @@
+export default async function bar() {}
diff --git a/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration9/expected.js b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration9/expected.js
new file mode 100644
index 0000000000..f3288c7d18
--- /dev/null
+++ b/packages/babel-generator/test/fixtures/types/ExportDefaultDeclaration9/expected.js
@@ -0,0 +1 @@
+export default async function bar() {}
\ No newline at end of file