swagger-to-graphq.yoga.js

const {GraphQLServer} = require('graphql-yoga');
const swaggerGraphQLSchema = require('swagger-to-graphql');
const API_BASE_URL = 'http://petstore.swagger.io/v2';

swaggerGraphQLSchema('./schema/petstore.swagger.json')
    .then(schema => {
        const options = {
            port: 4000
        };
        const server = new GraphQLServer({
            schema,
            context: {
                GQLProxyBaseUrl: API_BASE_URL
            }
        });
        server.start(options, () => console.log('Server is running on localhost:' + options.port))
    })
    .catch(e => {
        throw e;
    });

Swagger v2 type file currently not supported. Save change the swagger file type definition into object or string like this:

--- petstore.swagger.json
+++ petstore.swagger.json
@@ -408,7 +408,7 @@
             "in": "formData",
             "description": "file to upload",
             "required": false,
-            "type": "file"
+            "type": "object"
           }
         ],
         "responses": {