add missing types

Author: FinalDes

src/app.ts

@@ -6,9 +6,9 @@ import helmet = require("helmet");
 import {welcomeQuery} from "./graphiQL_welcome_query";
 import {schema} from "./schema";
 
-const app = express();
+const app: express.Application = express();
 
-const helperMiddleware = [
+const helperMiddleware: express.RequestHandler[] = [
   bodyParser.json(),
   bodyParser.text({ type: "application/graphql" }),
   (req: express.Request, res: express.Response, next: any) => {

src/graphiQL_welcome_query.ts

@@ -1,4 +1,4 @@
-export const welcomeQuery = `# Welcome to GraphiQL
+export const welcomeQuery: string = `# Welcome to GraphiQL
 
 query{
   hi

src/schema.ts

@@ -1,8 +1,9 @@
+import {GraphQLSchema} from "graphql";
 import { makeExecutableSchema } from "graphql-tools";
 import {resolvers} from "./schema/resolvers";
 import {typeDefs} from "./schema/typeDefs";
 
-export const schema = makeExecutableSchema({
+export const schema: GraphQLSchema = makeExecutableSchema({
   resolvers,
   typeDefs,
 });

src/server.ts

@@ -2,7 +2,7 @@ import dotenv = require("dotenv");
 import app from "./app";
 dotenv.config();
 
-const PORT = process.env.PORT;
+const PORT: string | undefined = process.env.PORT;
 
 app.listen(PORT, () => {
   /*tslint:disable no-console*/