Root Fields

This plugin enforces a limit on the number of root fields allowed in a GraphQL query, similar to the maxRootFields option in Apollo Router. This can help to improve the performance and stability of your GraphQL server by preventing overly complex queries.

Here’s an example query that fetches two root fields, field1, field2 and field3:

query GetAllFields {
  field { # 1
    id
  }
  field2 { # 2
    id
  }
  field3 { # 3
    id
  }
}

Limit Root Fields

Installation

npm i @graphql-yoga/root-level-limitation

Quick Start

import { createServer } from 'node:http'
import { createSchema, createYoga } from 'graphql-yoga'
import { rootLevelQueryLimit } from '@graphql-yoga/root-level-limitation'
 
export const yoga = createYoga({
  schema: createSchema({
    typeDefs: /* GraphQL */ `
      type Query {
        hello: String!
      }
    `
  }),
  plugins: [rootLevelQueryLimit({ maxRootLevelFields: 1 })]
})
 
const server = createServer(yoga)
server.listen(4000, () => {
  console.info('Server is running on http://localhost:4000/graphql')
})

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