Apollo GraphQL DataSource

A library for creating Apollo DataSources that connect to an existing GraphQL API. Current version is 1.3.2. It provides a simple way to integrate external GraphQL services into Apollo Server, similar to RESTDataSource but for GraphQL. Key differentiator: allows using Apollo Server's data source layer with GraphQL APIs, enabling caching, deduplication, and error handling. It is designed for Apollo Server 2.0 and uses GraphQL queries/mutations to fetch data. Note that this project is not actively maintained and has limited test coverage.