Example of filter and extend bug

Author: dr3

examples/fastify/.meshrc.yml

@@ -1,7 +1,19 @@
+merger: bare
 sources:
   - name: Swapi
     handler:
       openapi:
         source: ./swagger/pets.json
         endpoint: >-
           http://localhost:4001
+        selectQueryOrMutationField:
+          - fieldName: post_pet_by_petId
+            type: query
+    transforms:
+      - filterSchema:
+          mode: bare
+          filters:
+            - Mutation.!*
+      - extend:
+          typeDefs: ./src/extensions/typeDefs.graphql
+          resolvers: ./src/extensions/resolvers

examples/fastify/src/extensions/resolvers.ts

@@ -0,0 +1,7 @@
+const resolvers = {
+  Pet: {
+    fullName: () => "full name"
+  }
+}
+
+export default resolvers;

examples/fastify/src/extensions/typeDefs.graphql

@@ -0,0 +1,3 @@
+extend type Pet {
+  fullName: String
+}

examples/fastify/swagger/pets.json

@@ -2,7 +2,34 @@
   "openapi": "3.0.3",
   "paths": {
     "/pet/{petId}": {
-      "get": {
+      "post": {
+        "parameters": [
+          {
+            "name": "petId",
+            "in": "path",
+            "description": "ID of pet to return",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "successful operation",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/Pet"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "/pet2/{petId}": {
+      "post": {
         "parameters": [
           {
             "name": "petId",