Worker GraphQL
GraphQL server for worker environments (e.g. Cloudflare Workers).
GraphQL on Workers was inspired by this blog post, but using Apollo Server has a massive bundle size or can't bundle due to dependency on graphql-upload (a node.js dependency). Using worker-graphql resulted in a build of < 50KB.
Installation
npm install @borderless/worker-graphql --save
Usage
import { processGraphQL } from "@borderless/worker-graphql";
import { makeExecutableSchema } from "graphql-tools";
const schema = makeExecutableSchema({
typeDefs: `
type Query {
hello: String
}
`,
resolvers: {
Query: {
hello: () => "Hello world!",
},
},
});
// Wrap `processGraphQL` with CORS support.
const handler = async (req: Request) => {
if (req.method.toUpperCase() === "OPTIONS") {
return new Response(null, {
status: 204,
headers: {
"Access-Control-Allow-Methods": "GET,POST",
"Access-Control-Allow-Headers":
req.headers.get("Access-Control-Request-Headers") || "Content-Type",
"Access-Control-Allow-Origin": "*",
},
});
}
const res = await processGraphQL(req, { schema });
res.headers.set("Access-Control-Allow-Origin", "*");
return res;
};
addEventListener("fetch", (event) => {
event.respondWith(handler(event.request));
});License
MIT