unique-operation-types

✅ The "extends": "plugin:@graphql-eslint/schema-recommended" property in a configuration file enables this rule.

• Category: Schema
• Rule name: @graphql-eslint/unique-operation-types
• Requires GraphQL Schema: false ℹ️
• Requires GraphQL Operations: false ℹ️

A GraphQL document is only valid if it has only one type per operation.

This rule is a wrapper around a graphql-js validation function.

Resources

• Rule source 
• Test source