ExpressGraphQL

expressgraphql is a JavaScript library that integrates GraphQL functionality into the Express web application framework. It simplifies the process of creating GraphQL APIs within an Express application, providing a convenient way to handle GraphQL requests. The library acts as middleware for Express, allowing developers to define their GraphQL schema and resolvers and then serve them through an HTTP endpoint.

By using expressgraphql, developers can leverage the power of GraphQL to build flexible and efficient APIs. It handles parsing incoming GraphQL queries, validating them against the defined schema, and executing the corresponding resolvers to fetch the requested data. The library also provides features like automatic schema generation from code or SDL (Schema Definition Language) and supports common GraphQL features such as subscriptions and introspection.

The integration with Express means that developers can utilize existing Express middleware for tasks like authentication, logging, and error handling alongside their GraphQL API. This allows for a cohesive application structure where both RESTful and GraphQL endpoints can coexist. expressgraphql aims to make it easier to get started with GraphQL in an Express environment, offering a straightforward setup and configuration process. It is a popular choice for projects that require a GraphQL API built on top of the widely adopted Express framework.