⚠ This is a work in progress!

elm-graphql

elm-graphql aims to generate Elm code for making GraphQL queries in a type-safe manner. It's being developed at the bimonthly Elm Hackathon. Contributions are welcome.

This prototype consists of a code generator which takes GraphQL schema and named queries in a .graphql file and generates corresponding Elm types. The schema is obtained by introspection of a live GraphQL server.

The type of each query is a single large record. We do not generate type aliases for each "object", because GraphQL allows different fields to be selected for the same type at different nesting levels within the same query. Elm's extensible records mean that there's really no reason to want to do this anyway.

We use Facebook's graphql-js to parse a GraphQL schema.

Build

cd tool
npm install

This builds the code generator, but you'll need to check out my demo project to actually use it, see below.

Demo

Check out my elm-graphql-demo which provides a sample application and includes full build instructions.

How it works

See the wiki page, how elm-graphql works for more details.

Projects using elm-graphql

• elm-hipster-stack: Elm, Phoenix, GraphQL and RethinkDB