no-scalar-result-type-on-mutation

💡 This rule provides suggestions (opens in a new tab)

• Category: Schema
• Rule name: @graphql-eslint/no-scalar-result-type-on-mutation
• Requires GraphQL Schema: true ℹ️
• Requires GraphQL Operations: false ℹ️

Avoid scalar result type on mutation type to make sure to return a valid state.

Usage Examples

Incorrect

# eslint @graphql-eslint/no-scalar-result-type-on-mutation: 'error'
 
type Mutation {
  createUser: Boolean
}

Correct

# eslint @graphql-eslint/no-scalar-result-type-on-mutation: 'error'
 
type Mutation {
  createUser: User!
}

Resources

• Rule source (opens in a new tab)
• Test source (opens in a new tab)