fix trailing slashes handling in nest multi-handler routing (#286)

* fix trailing slashes handling in fastify nest

* chore: changeset

---------

Co-authored-by: Oliver Butler <dev@oliverbutler.uk>

Author: Gabrola

.changeset/loud-jars-work.md

@@ -0,0 +1,5 @@
+---
+'@ts-rest/nest': patch
+---
+
+fix: add support for trailing slashes in the nest multi-handler routing

libs/ts-rest/nest/src/lib/ts-rest-nest-handler.spec.ts

@@ -41,6 +41,9 @@ describe('doesUrlMatchContractPath', () => {
     ${'/'}          | ${'/'}        | ${true}
     ${'/'}          | ${'/api'}     | ${false}
     ${'/api'}       | ${'/api'}     | ${true}
+    ${'/api/'}      | ${'/api'}     | ${true}
+    ${'/api'}       | ${'/api/'}    | ${true}
+    ${'/api/'}      | ${'/api/'}    | ${true}
     ${'/posts/:id'} | ${'/posts/1'} | ${true}
     ${'/posts/:id'} | ${'/posts/1'} | ${true}
     ${'/posts/:id'} | ${'/posts'}   | ${false}

libs/ts-rest/nest/src/lib/ts-rest-nest-handler.ts

@@ -165,6 +165,15 @@ export const doesUrlMatchContractPath = (
    */
   url: string
 ): boolean => {
+  // strip trailing slash
+  if (contractPath !== '/' && contractPath.endsWith('/')) {
+    contractPath = contractPath.slice(0, -1);
+  }
+
+  if (url !== '/' && url.endsWith('/')) {
+    url = url.slice(0, -1);
+  }
+
   const contractPathParts = contractPath.split('/');
 
   const urlParts = url.split('/');
@@ -221,7 +230,7 @@ export class TsRestHandlerInterceptor implements NestInterceptor {
         return (
           doesUrlMatchContractPath(
             value.path,
-            'path' in req ? req.path : req.url.split('?')[0]
+            'path' in req ? req.path : req.routerPath
           ) && req.method === value.method
         );
       }