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GraphQL Doctor

A GitHub App built with Probot that prevent Breaking Changes in a GraphQL API using GitHub Checks API.

Why

When using Continuous Evolution you have to prevent any Breaking Changes to your GraphQL API. That's why we recommend to commit a dump of your GraphQL schema (using SDL) inside your repository (eg: with a pre-commit).

graphql-doctor will use your current schema and compare it with the previous schema (eg: the schema on the master branch) then it guess if you made some Breaking or Dangerous changes !

Example

You can look at this Pull request.

Features

Show issues right in your schema

Generate a failure in case of Breaking Changes

Inspiration

This project was created because we, at Cap Collectif, wanted the same bot as used internally at GitHub. We mostly used xuorig/graphql-schema_comparator as an inspiration.

Configuration

Add the following key to your package.json :

  "graphql-doctor": {
    "schema.public.graphql": {
      "ref": "heads/master",
      "schemaPath": "schema.public.graphql"
    }
  },

This will compare your current schema.public.graphql against schema.public.graphql in the master branch.

Deployment

We don't provide a public application (yet!) but you can easily deploy your own. Internally we are using heroku :

git push heroku master

Contributing

Setup

# Install dependencies
yarn install

# Run the bot
yarn start

# Run tests
yarn test

If you have suggestions for how graphql-doctor could be improved, or want to report a bug, open an issue! Any kind of contributions is greatly appreciated.

For more, check out the Contributing Guide.

License

ISC

Credits

Created by Aurélien David. Sponsored by Cap Collectif.