From e57f4dcfb1c76afa5d2f0999a4d082864d1fe2f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9CSebastian?=
 <64795732+slegarraga@users.noreply.github.com>
Date: Sun, 7 Jun 2026 14:18:16 -0400
Subject: [PATCH] Fix empty string enum member output

---
 packages/openapi-typescript/src/lib/ts.ts       | 6 ++++--
 packages/openapi-typescript/test/lib/ts.test.ts | 8 ++++++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/packages/openapi-typescript/src/lib/ts.ts b/packages/openapi-typescript/src/lib/ts.ts
index d1f41eb88..3bfb63764 100644
--- a/packages/openapi-typescript/src/lib/ts.ts
+++ b/packages/openapi-typescript/src/lib/ts.ts
@@ -406,8 +406,10 @@ function sanitizeMemberName(name: string) {
 
 /** Sanitize TS enum member expression */
 export function tsEnumMember(value: string | number, metadata: { name?: string; description?: string | null } = {}) {
-  let name = metadata.name ?? String(value);
-  if (!JS_PROPERTY_INDEX_RE.test(name)) {
+  let name: string | ts.StringLiteral = metadata.name ?? String(value);
+  if (name === "") {
+    name = ts.factory.createStringLiteral(name);
+  } else if (!JS_PROPERTY_INDEX_RE.test(name)) {
     if (Number(name[0]) >= 0) {
       name = `Value${name}`.replace(".", "_"); // don't forged decimals;
     } else if (name[0] === "-") {
diff --git a/packages/openapi-typescript/test/lib/ts.test.ts b/packages/openapi-typescript/test/lib/ts.test.ts
index 79e5b4571..9e0e2869c 100644
--- a/packages/openapi-typescript/test/lib/ts.test.ts
+++ b/packages/openapi-typescript/test/lib/ts.test.ts
@@ -187,6 +187,14 @@ describe("tsEnum", () => {
 }`);
   });
 
+  test("empty string member", () => {
+    expect(astToString(tsEnum("/my/enum/", ["", "foo", "bar"])).trim()).toBe(`enum MyEnum {
+    "" = "",
+    foo = "foo",
+    bar = "bar"
+}`);
+  });
+
   test("with setting: export", () => {
     expect(
       astToString(