known-type-names

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

💡 This rule provides suggestions 

• Category: Schema & Operations
• Rule name: @graphql-eslint/known-type-names
• Requires GraphQL Schema: true ℹ️
• Requires GraphQL Operations: false ℹ️

A GraphQL document is only valid if referenced types (specifically variable definitions and fragment conditions) are defined by the type schema.

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

Resources

• Rule source 
• Test source