diff --git a/test/samples/import-all-typeof/input/foo.ts b/test/samples/import-all-typeof/input/foo.ts
new file mode 100644
index 0000000..89450a9
--- /dev/null
+++ b/test/samples/import-all-typeof/input/foo.ts
@@ -0,0 +1,3 @@
+export function handler() {
+	return 3;
+}
diff --git a/test/samples/import-all-typeof/input/index.ts b/test/samples/import-all-typeof/input/index.ts
new file mode 100644
index 0000000..f66d027
--- /dev/null
+++ b/test/samples/import-all-typeof/input/index.ts
@@ -0,0 +1,3 @@
+import * as foo from './foo';
+
+export type Foo = (typeof foo)['handler'];
diff --git a/test/samples/import-all-typeof/output/index.d.ts b/test/samples/import-all-typeof/output/index.d.ts
new file mode 100644
index 0000000..c9981a5
--- /dev/null
+++ b/test/samples/import-all-typeof/output/index.d.ts
@@ -0,0 +1,8 @@
+declare module 'import-all-typeof' {
+	export type Foo = (typeof foo)['handler'];
+	// definition of foo should be here
+
+	export {};
+}
+
+//# sourceMappingURL=index.d.ts.map
diff --git a/test/samples/import-all-typeof/output/index.d.ts.map b/test/samples/import-all-typeof/output/index.d.ts.map
new file mode 100644
index 0000000..de0f7b7
--- /dev/null
+++ b/test/samples/import-all-typeof/output/index.d.ts.map
@@ -0,0 +1,14 @@
+{
+	"version": 3,
+	"file": "index.d.ts",
+	"names": [
+		"Foo"
+	],
+	"sources": [
+		"../input/index.ts"
+	],
+	"sourcesContent": [
+		null
+	],
+	"mappings": ";aAEYA,GAAGA"
+}