Hey we're just forking the this to fast track the fix in #1174 into our production code!

GraphQL.js

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


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.

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Install GraphQL.js from npm

With yarn:

``sh
yarn add graphql
`

or alternatively using npm:

`sh
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.

`js
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.

`js
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.

`js
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);

});
`

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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
``

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We actively welcome pull requests, learn how to
contribute.

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Changes are tracked as GitHub releases.

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GraphQL.js is MIT-licensed.