fix(koa): matching overlapping routes

e2e/openapi.yaml

@@ -7,6 +7,7 @@ tags:
   - name: validation
   - name: escape hatches
   - name: media types
+  - name: route matching
 servers:
   - url: '{protocol}://{host}:{port}'
     variables:
@@ -196,6 +197,7 @@ paths:
                     type: array
                     items:
                       type: string
+
   /validation/numbers/random-number:
     get:
       tags:
@@ -355,6 +357,36 @@ paths:
               schema:
                 type: string
 
+  /route-matching/fixed-field:
+    get:
+      operationId: routeMatchingGetByFixedField
+      tags:
+        - route matching
+      responses:
+        200:
+          description: 'ok'
+          content:
+            application/json:
+              schema: {}
+
+  /route-matching/{id}:
+    get:
+      operationId: routeMatchingGetById
+      tags:
+        - route matching
+      parameters:
+        - name: id
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        200:
+          description: 'ok'
+          content:
+            application/json:
+              schema: {}
+
 components:
   responses:
     GetHeaders:

e2e/src/express.entrypoint.ts

@@ -4,6 +4,7 @@ import {createEscapeHatchesRouter} from "./routes/express/escape-hatches.ts"
 import {createMediaTypesRouter} from "./routes/express/media-types.ts"
 import {createQueryParametersRouter} from "./routes/express/query-parameters.ts"
 import {createRequestHeadersRouter} from "./routes/express/request-headers.ts"
+import {createRouteMatchingRouter} from "./routes/express/route-matching.ts"
 import {createValidationRouter} from "./routes/express/validation.ts"
 import {createErrorResponse} from "./shared.ts"
 
@@ -15,12 +16,14 @@ function createRouter() {
   const escapeHatchesRouter = createEscapeHatchesRouter()
   const mediaTypesRouter = createMediaTypesRouter()
   const queryParametersRouter = createQueryParametersRouter()
+  const routeMatchingRouter = createRouteMatchingRouter()
 
   router.use(requestHeadersRouter)
   router.use(validationRouter)
   router.use(escapeHatchesRouter)
   router.use(mediaTypesRouter)
   router.use(queryParametersRouter)
+  router.use(routeMatchingRouter)
 
   return router
 }