Neutered Paranoid Meerkat
    Share your code. npm Orgs help your team discover, share, and reuse code. Create a free org »

    graphqlpublic

    GraphQL.js

    The JavaScript reference implementation for GraphQL, a query language for APIs created by Facebook.

    npm version Build Status Coverage Status

    See more complete documentation at http://graphql.org/ and http://graphql.org/graphql-js/.

    Looking for help? Find resources from the community.

    Getting Started

    An overview of GraphQL in general is available in the README for the Specification for GraphQL. That overview describes a simple set of GraphQL examples that exist as tests in this repository. A good way to get started with this repository is to walk through that README and the corresponding tests in parallel.

    Using GraphQL.js

    Install GraphQL.js from npm

    With yarn:

    yarn add graphql

    or alternatively using npm:

    npm install --save graphql

    GraphQL.js provides two important capabilities: building a type schema, and serving queries against that type schema.

    First, build a GraphQL type schema which maps to your code base.

    import {
      graphql,
      GraphQLSchema,
      GraphQLObjectType,
      GraphQLString
    } from 'graphql';
     
    var schema = new GraphQLSchema({
      query: new GraphQLObjectType({
        name: 'RootQueryType',
        fields: {
          hello: {
            type: GraphQLString,
            resolve() {
              return 'world';
            }
          }
        }
      })
    });

    This defines a simple schema with one type and one field, that resolves to a fixed value. The resolve function can return a value, a promise, or an array of promises. A more complex example is included in the top level tests directory.

    Then, serve the result of a query against that type schema.

    var query = '{ hello }';
     
    graphql(schema, query).then(result => {
     
      // Prints
      // {
      //   data: { hello: "world" }
      // }
      console.log(result);
     
    });

    This runs a query fetching the one field defined. The graphql function will first ensure the query is syntactically and semantically valid before executing it, reporting errors otherwise.

    var query = '{ boyhowdy }';
     
    graphql(schema, query).then(result => {
     
      // Prints
      // {
      //   errors: [
      //     { message: 'Cannot query field boyhowdy on RootQueryType',
      //       locations: [ { line: 1, column: 3 } ] }
      //   ]
      // }
      console.log(result);
     
    });

    Want to ride the bleeding edge?

    The npm branch in this repository is automatically maintained to be the last commit to master to pass all tests, in the same form found on npm. It is recommended to use builds deployed to npm for many reasons, but if you want to use the latest not-yet-released version of graphql-js, you can do so by depending directly on this branch:

    npm install graphql@git://github.com/graphql/graphql-js.git#npm
    

    Contributing

    We actively welcome pull requests, learn how to contribute.

    Changelog

    Changes are tracked as GitHub releases.

    License

    GraphQL.js is MIT-licensed.

    Keywords

    none

    install

    npm i graphql

    Downloadsweekly downloads

    596,829

    version

    0.13.2

    license

    MIT

    repository

    githubgithub

    last publish

    collaborators

    • avatar
    • avatar
    • avatar
    • avatar
    • avatar