noDuplicateEnumValueNames

GraphQL

Summary

Rule available since: v2.3.12
Diagnostic Category: lint/correctness/noDuplicateEnumValueNames
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-enum-value-names

How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "correctness": {
5
        "noDuplicateEnumValueNames": "error"
6
      }
7
    }
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  }
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}

Description

Require all enum value names to be unique.

A GraphQL enum type is only valid if all its values are uniquely named. The enum value names are case insensitive, meaning TEST & Test are seen as the same enum value name.

Examples

Invalid

1
enum A {
2
  TEST
3
  OTHER
4
  TEST
5
}

code-block.graphql:3:8 lint/correctness/noDuplicateEnumValueNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate enum value name.
  
    1 │ enum A {
    2 │   TEST
  > 3 │   OTHER
      │        
  > 4 │   TEST
      │   ^^^^
    5 │ }
    6 │ 
  
  ℹ A GraphQL enum type is only valid if all its values are uniquely named. Make sure to name every enum value differently.

1
enum B {
2
  TEST
3
  TesT
4
}

code-block.graphql:2:7 lint/correctness/noDuplicateEnumValueNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate enum value name.
  
    1 │ enum B {
  > 2 │   TEST
      │       
  > 3 │   TesT
      │   ^^^^
    4 │ }
    5 │ 
  
  ℹ A GraphQL enum type is only valid if all its values are uniquely named. Make sure to name every enum value differently.

Valid

1
enum A {
2
  TEST
3
  OTHER
4
}