From 600ee7ee803328eb38533704926ca1ca3580d36c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gast=C3=B3n=20Fournier?= <gaston@getunleash.io>
Date: Thu, 29 May 2025 12:44:00 +0200
Subject: [PATCH] feat: fail in dev when usign deprecated endpoints (#10058)

---
 src/lib/services/openapi-service.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/lib/services/openapi-service.ts b/src/lib/services/openapi-service.ts
index def7d8ed06..66fc7ee6b0 100644
--- a/src/lib/services/openapi-service.ts
+++ b/src/lib/services/openapi-service.ts
@@ -51,6 +51,20 @@ export class OpenApiService {
             
             `
             : '';
+
+        const failDeprecated =
+            (op.deprecated ?? false) && process.env.NODE_ENV === 'development';
+
+        if (failDeprecated) {
+            return (req, res, next) => {
+                this.logger.warn(
+                    `Deprecated endpoint: ${op.operationId} at ${req.path}`,
+                );
+                return res.status(410).json({
+                    message: `The endpoint ${op.operationId} at ${req.path} is deprecated and should not be used.`,
+                });
+            };
+        }
         return this.api.validPath({
             ...rest,
             description: