From 43408c0b2ad3fe8cb516ac659dcec3874eb2790b Mon Sep 17 00:00:00 2001
From: Sora Morimoto <sora@morimoto.io>
Date: Thu, 28 Aug 2025 16:01:36 +0900
Subject: [PATCH 1/2] Use Node module namespace to expose require

---
 src/templates-worker.ts | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/templates-worker.ts b/src/templates-worker.ts
index 4359c9f5a..2d01c7509 100644
--- a/src/templates-worker.ts
+++ b/src/templates-worker.ts
@@ -1,3 +1,4 @@
+import * as module from "node:module";
 import * as path from "node:path";
 import * as url from "node:url";
 import { consola } from "consola";
@@ -7,6 +8,8 @@ import type { CodeGenProcess } from "./code-gen-process.js";
 import type { CodeGenConfig } from "./configuration.js";
 import type { FileSystem } from "./util/file-system.js";
 
+const require = module.createRequire(import.meta.url);
+
 export class TemplatesWorker {
   config: CodeGenConfig;
   fileSystem: FileSystem;
@@ -74,21 +77,21 @@ export class TemplatesWorker {
     );
   };
 
-  requireFnFromTemplate = async (packageOrPath: string) => {
+  requireFnFromTemplate = (packageOrPath: string) => {
     const isPath =
       packageOrPath.startsWith("./") || packageOrPath.startsWith("../");
 
     if (isPath) {
-      return await import(
+      return require(
         path.resolve(
           this.config.templatePaths.custom ||
             this.config.templatePaths.original,
           packageOrPath,
-        )
+        ),
       );
     }
 
-    return await import(packageOrPath);
+    return require(packageOrPath);
   };
 
   getTemplate = (name: string, fileName: string, path?: string) => {

From 6954f5974cef9f5db792c95b4a5301d3ab7f4472 Mon Sep 17 00:00:00 2001
From: Sora Morimoto <sora@morimoto.io>
Date: Thu, 28 Aug 2025 16:10:06 +0900
Subject: [PATCH 2/2] Add changeset for synchronous template require

---
 .changeset/synchronous-template-require.md | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 .changeset/synchronous-template-require.md

diff --git a/.changeset/synchronous-template-require.md b/.changeset/synchronous-template-require.md
new file mode 100644
index 000000000..b050b36fe
--- /dev/null
+++ b/.changeset/synchronous-template-require.md
@@ -0,0 +1,6 @@
+---
+"swagger-typescript-api": patch
+---
+
+Support synchronous require in templates using Node's createRequire.
+