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graphql-yoga
Advanced tools
graphql-yoga is a fully-featured GraphQL server that is easy to set up and use. It is built on top of GraphQL.js and provides a simple yet powerful API for building GraphQL servers. It comes with out-of-the-box support for features like subscriptions, file uploads, and more.
Basic Server Setup
This code sets up a basic GraphQL server with a single query 'hello' that returns a string. The server is started and listens on port 4000.
const { createServer } = require('graphql-yoga');
const typeDefs = `
type Query {
hello: String!
}
`;
const resolvers = {
Query: {
hello: () => 'Hello, world!',
},
};
const server = createServer({ typeDefs, resolvers });
server.start(() => console.log('Server is running on http://localhost:4000'));
Subscriptions
This code demonstrates how to set up a GraphQL server with subscriptions. It uses the 'graphql-subscriptions' package to handle real-time updates. A new message is published every second.
const { createServer } = require('graphql-yoga');
const { PubSub } = require('graphql-subscriptions');
const pubsub = new PubSub();
const typeDefs = `
type Query {
hello: String!
}
type Subscription {
newMessage: String!
}
`;
const resolvers = {
Query: {
hello: () => 'Hello, world!',
},
Subscription: {
newMessage: {
subscribe: () => pubsub.asyncIterator(['NEW_MESSAGE']),
},
},
};
const server = createServer({ typeDefs, resolvers });
server.start(() => console.log('Server is running on http://localhost:4000'));
setInterval(() => {
pubsub.publish('NEW_MESSAGE', { newMessage: 'Hello, world!' });
}, 1000);
File Uploads
This code sets up a GraphQL server that supports file uploads. It defines a custom scalar 'Upload' and a mutation 'singleUpload' that handles the file upload process.
const { createServer } = require('graphql-yoga');
const typeDefs = `
scalar Upload
type Query {
hello: String!
}
type Mutation {
singleUpload(file: Upload!): String!
}
`;
const resolvers = {
Query: {
hello: () => 'Hello, world!',
},
Mutation: {
singleUpload: async (parent, { file }) => {
const { createReadStream, filename } = await file;
createReadStream().pipe(fs.createWriteStream(path.join(__dirname, filename)));
return filename;
},
},
};
const server = createServer({ typeDefs, resolvers });
server.start(() => console.log('Server is running on http://localhost:4000'));
Apollo Server is a community-driven, open-source GraphQL server that works with any GraphQL schema. It provides a robust set of features, including caching, subscriptions, and more. Compared to graphql-yoga, Apollo Server offers more advanced features and integrations but may require more configuration.
express-graphql is a minimalistic GraphQL HTTP server middleware for Express. It is easy to set up and use, making it a good choice for simple applications. However, it lacks some of the advanced features provided by graphql-yoga, such as built-in subscriptions and file uploads.
graphql-koa is a GraphQL server middleware for Koa. It provides a simple way to integrate GraphQL into a Koa application. While it is similar to express-graphql in terms of simplicity, it does not offer the same level of built-in features as graphql-yoga.
Fully-featured GraphQL Server with focus on easy setup, performance & great developer experience
graphql-yoga
is based on the following libraries & tools:
express
/apollo-server
: Performant, extensible web server frameworkgraphql-subscriptions
/subscriptions-transport-ws
: GraphQL subscriptions servergraphql.js
/graphql-tools
: GraphQL engine & schema helpersgraphql-playground
: Interactive GraphQL IDEyarn add graphql-yoga
import { GraphQLServer } from './graphql-yoga'
// ... or using `require()`
// const { GraphQLServer } = require('graphql-yoga')
const typeDefs = `
type Query {
hello(name: String): String!
}
`
const resolvers = {
Query: {
hello: (_, { name }) => `Hello ${name || 'World'}`,
},
}
const server = new GraphQLServer({ typeDefs, resolvers })
server.start(3000, () => console.log('Server is running on localhost:3000'))
GraphQLServer
PubSub
now
up
graphql-yoga
compare to apollo-server
and other tools?express
?FAQs
Unknown package
The npm package graphql-yoga receives a total of 330,741 weekly downloads. As such, graphql-yoga popularity was classified as popular.
We found that graphql-yoga demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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