DefinitelyTyped/types/express-graphql/index.d.ts
2018-02-04 16:56:03 +00:00

76 lines
2.4 KiB
TypeScript

// Type definitions for express-graphql
// Project: https://www.npmjs.org/package/express-graphql
// Definitions by: Isman Usoh <https://github.com/isman-usoh>
// Nitin Tutlani <https://github.com/nitintutlani>
// Daniel Fader <https://github.com/hubel>
// Ehsan Ziya <https://github.com/zya>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.3
import { Request, Response } from "express";
export = graphqlHTTP;
declare namespace graphqlHTTP {
/**
* Used to configure the graphQLHTTP middleware by providing a schema
* and other configuration options.
*/
export type Options = ((req: Request) => OptionsObj) | ((req: Request) => Promise<OptionsObj>) | OptionsObj
export type OptionsObj = {
/**
* A GraphQL schema from graphql-js.
*/
schema: Object,
/**
* A value to pass as the context to the graphql() function.
*/
context?: Object,
/**
* An object to pass as the rootValue to the graphql() function.
*/
rootValue?: Object,
/**
* A boolean to configure whether the output should be pretty-printed.
*/
pretty?: boolean,
/**
* An optional function which will be used to format any errors produced by
* fulfilling a GraphQL operation. If no function is provided, GraphQL's
* default spec-compliant `formatError` function will be used.
*/
formatError?: Function,
/**
* A boolean to optionally enable GraphiQL mode.
*/
graphiql?: boolean,
/**
* An optional function for adding additional metadata to the GraphQL response as a key-value object.
* The result will be added to "extensions" field in the resulting JSON.
*/
extensions?: ((args: ExtenstionsArgs) => any) | ((args: ExtenstionsArgs) => Promise<any>);
};
interface ExtenstionsArgs {
document: object,
variables: object,
operationName: any,
result: object
}
type Middleware = (request: Request, response: Response) => void;
}
/**
* Middleware for express; takes an options object or function as input to
* configure behavior, and returns an express middleware.
*/
declare function graphqlHTTP(options: graphqlHTTP.Options): graphqlHTTP.Middleware;