From a3f2269d114c9c749b4e66a5d6cc76f234b03925 Mon Sep 17 00:00:00 2001
From: Ming <wangyiming.fe@bytedance.com>
Date: Wed, 29 Nov 2023 17:34:42 +0800
Subject: [PATCH] fix: avoid to duplicate register ts-node in dev (#5015)

---
 .changeset/clever-weeks-wink.md              | 6 ++++++
 packages/server/bff-core/src/router/index.ts | 7 ++-----
 2 files changed, 8 insertions(+), 5 deletions(-)
 create mode 100644 .changeset/clever-weeks-wink.md

diff --git a/.changeset/clever-weeks-wink.md b/.changeset/clever-weeks-wink.md
new file mode 100644
index 000000000000..e4b4049f4d22
--- /dev/null
+++ b/.changeset/clever-weeks-wink.md
@@ -0,0 +1,6 @@
+---
+'@modern-js/bff-core': patch
+---
+
+fix: avoid to duplicate register ts-node in dev
+fix: 避免在开发环境重复注册 ts-node
diff --git a/packages/server/bff-core/src/router/index.ts b/packages/server/bff-core/src/router/index.ts
index cf8fd91c3858..5e3475cdd4c8 100644
--- a/packages/server/bff-core/src/router/index.ts
+++ b/packages/server/bff-core/src/router/index.ts
@@ -68,16 +68,12 @@ export class ApiRouter {
     this.lambdaDir = this.getExactLambdaDir(this.apiDir, lambdaDir);
     this.existLambdaDir = fs.existsSync(this.lambdaDir);
     debug(`apiDir:`, this.apiDir, `lambdaDir:`, this.lambdaDir);
-    this.enableRegister();
   }
 
   private enableRegister() {
     // eslint-disable-next-line node/no-deprecated-api
     const existTsLoader = Boolean(require.extensions['.ts']);
-    if (
-      !existTsLoader &&
-      (process.env.NODE_ENV !== 'production' || this.isBuild)
-    ) {
+    if (!existTsLoader) {
       try {
         const projectSearchDir = this.appDir || this.apiDir;
         const tsNode: typeof import('ts-node') = require('ts-node');
@@ -313,6 +309,7 @@ export class ApiRouter {
   }
 
   private getModuleInfo(filename: string) {
+    this.enableRegister();
     try {
       const module = requireHandlerModule(filename);
       return {