add yoga

src/routes/api/graphql/+server.ts

@@ -0,0 +1,24 @@
+import { createSchema, createYoga } from 'graphql-yoga';
+import type { RequestEvent } from '@sveltejs/kit';
+
+const yogaApp = createYoga<RequestEvent>({
+	schema: createSchema({
+		typeDefs: `
+			type Query {
+				hello: String
+			}
+		`,
+		resolvers: {
+			Query: {
+				hello: () => 'SvelteKit - GraphQL Yoga'
+			}
+		}
+	}),
+	// Needed to be defined explicitly because our endpoint lives at a different path other than `/graphql`
+	graphqlEndpoint: '/api/graphql',
+
+	// Needed to let Yoga use sveltekit's Response object
+	fetchAPI: { Response }
+});
+
+export { yogaApp as GET, yogaApp as POST };