noDuplicateFieldDefinitionNames (GraphQL)

Language GraphQL

Summary

Rule available since: v2.3.11
Diagnostic Category: lint/correctness/noDuplicateFieldDefinitionNames
This rule is recommended, meaning it is enabled by default.
This rule doesn’t have a fix.
The default severity of this rule is error.
Sources:
- Same as @graphql-eslint/unique-field-definition-names

How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "correctness": {
5
        "noDuplicateFieldDefinitionNames": "error"
6
      }
7
    }
8
  }
9
}

Description

Require all fields of a type to be unique.

A GraphQL complex type is only valid if all its fields are uniquely named.

Examples

Invalid

1
type SomeObject {
2
  foo: String
3
  foo: String
4
}

code-block.graphql:2:3 lint/correctness/noDuplicateFieldDefinitionNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ The field name "foo" is used more than once.
  
    1 │ type SomeObject {
  > 2 │   foo: String
      │   ^^^
    3 │   foo: String
    4 │ }
  
  ℹ The field "foo" is repeated here.
  
    1 │ type SomeObject {
    2 │   foo: String
  > 3 │   foo: String
      │   ^^^
    4 │ }
    5 │ 
  
  ℹ A GraphQL complex type is only valid if all its fields are uniquely named. Make sure to name every field differently.

1
interface SomeObject {
2
  foo: String
3
  foo: String
4
}

code-block.graphql:2:3 lint/correctness/noDuplicateFieldDefinitionNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ The field name "foo" is used more than once.
  
    1 │ interface SomeObject {
  > 2 │   foo: String
      │   ^^^
    3 │   foo: String
    4 │ }
  
  ℹ The field "foo" is repeated here.
  
    1 │ interface SomeObject {
    2 │   foo: String
  > 3 │   foo: String
      │   ^^^
    4 │ }
    5 │ 
  
  ℹ A GraphQL complex type is only valid if all its fields are uniquely named. Make sure to name every field differently.

1
input SomeObject {
2
  foo: String
3
  foo: String
4
}

code-block.graphql:2:3 lint/correctness/noDuplicateFieldDefinitionNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ The field name "foo" is used more than once.
  
    1 │ input SomeObject {
  > 2 │   foo: String
      │   ^^^
    3 │   foo: String
    4 │ }
  
  ℹ The field "foo" is repeated here.
  
    1 │ input SomeObject {
    2 │   foo: String
  > 3 │   foo: String
      │   ^^^
    4 │ }
    5 │ 
  
  ℹ A GraphQL complex type is only valid if all its fields are uniquely named. Make sure to name every field differently.

Valid

1
type SomeObject {
2
  foo: String
3
  bar: String
4
}

1
interface SomeObject {
2
  foo: String
3
  bar: String
4
}

1
input SomeObject {
2
  foo: String
3
  bar: String
4
}

noDuplicateFieldDefinitionNames (GraphQL)

Summary

How to configure

Description

Examples

Invalid

Valid

Related links