Mercurius

Mercurius is a GraphQL adapter for Fastify

Installation

npm

npm i fastify mercurius graphql @gqloom/core

pnpm

pnpm add fastify mercurius graphql @gqloom/core

yarn

yarn add fastify mercurius graphql @gqloom/core

bun

bun add fastify mercurius graphql @gqloom/core

Usage

import { weave } from "@gqloom/core"
import Fastify from "fastify"
import mercurius from "mercurius"
import { helloResolver } from "./resolvers"

const schema = weave(helloResolver)

const app = Fastify()
app.register(mercurius, { schema })
app.listen({ port: 4000 }, () => {
  console.info("Mercurius server is running on http://localhost:4000")
})

Contexts

When using GQLoom together with Mercurius, you can use MercuriusContext to label the type of context:

import { useContext } from "@gqloom/core/context"
import { type MercuriusContext } from "mercurius"

export function useAuthorization() {
  return useContext<MercuriusContext>().reply.request.headers.authorization
}

You can also learn more about contexts in the Mercurius documentation.