Allow to configure the rootValue

[ggrossetie]

Story

As a user migrating from express-graphql, I want to pass a rootValue resolver. With express-graphql, I was able to do the following:

app.get('/graphql', graphqlHTTP((req, res) => ({
  schema,
  rootValue: resolvers
})))

Ideally, I would like to set rootValue as an option of createHandler

app.use(
  '/graphql',
  createHandler({ schema,  rootValue }),
)

Acceptance criteria

• user is able to configure a rootValue without overriding the whole ExecutionContext with onSubscribe
• user can find documentation on how to configure a rootValue

Note

Maybe using a rootValue is not recommended anymore? Maybe there's an alternative? For reference, here's how I declare my schema/resolvers:

module.exports = {
  /**
   * Create an article.
   */
  articles: async (args, { req }) => {
    // ...
  }
  /**
   * Delete an article.
   */
  deleteArticle: async (args, { req }) => {
    // ...
  },
}

const gql = require('graphql-tag')
const { buildASTSchema } = require('graphql')

module.exports = buildASTSchema(gql`
  type Article {
    _id: ID!
    title: String
    content: String
    createdAt: String
    updatedAt: String
  }

  type RootQuery {
    articles (user: ID): [Article!]!
  }

  type RootMutation {
    deleteArticle(article: ID!): Article!
  }

  schema {
    query: RootQuery
    mutation: RootMutation
  }
`)

[enisdenjo]

This makes sense! Thank you for opening an issue, I will tackle this rather soon.

[enisdenjo]

🎉 This issue has been resolved in version 1.10.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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