Use esModuleInterop mode, and improve tests

types/graphql-api-koa/graphql-api-koa-tests.ts

@@ -1,27 +1,3 @@
-import { GraphQLSchema, GraphQLObjectType, GraphQLString } from "graphql";
-import { execute } from "graphql-api-koa";
-
-execute({
-  schema: new GraphQLSchema({
-    query: new GraphQLObjectType({
-      name: "Query",
-      fields: () => ({
-        hello: {
-          type: GraphQLString,
-          resolve() {
-            return "world";
-          }
-        }
-      })
-    })
-  })
-});
-
-/* This is the thest that SHOULD exist here... but for whatever reason, the
-   DefinitelyTyped repo always errors with:
-
-   Module '"/Users/mike/Code/DefinitelyTyped/types/koa/index"' has no default export.
-
 import Koa from "koa";
 import { GraphQLSchema, GraphQLObjectType, GraphQLString } from "graphql";
 import { errorHandler, execute } from "graphql-api-koa";
@@ -43,4 +19,3 @@ const app = new Koa()
       })
     })
   }));
-*/

types/graphql-api-koa/tsconfig.json

@@ -14,7 +14,8 @@
         ],
         "types": [],
         "noEmit": true,
-        "forceConsistentCasingInFileNames": true
+        "forceConsistentCasingInFileNames": true,
+        "esModuleInterop": true
     },
     "files": [
         "index.d.ts",