sort-modules

type

Specifies the sorting method.

• 'alphabetical' — Sort items alphabetically (e.g., “a” < “b” < “c”) using localeCompare.
• 'natural' — Sort items in a natural order (e.g., “item2” < “item10”).
• 'line-length' — Sort items by the length of the code line (shorter lines first).
• 'custom' — Sort items using the alphabet entered in the alphabet option.

order

Determines whether the sorted items should be in ascending or descending order.

• 'asc' — Sort items in ascending order (A to Z, 1 to 9).
• 'desc' — Sort items in descending order (Z to A, 9 to 1).

alphabet

Only used when the type option is set to 'custom'. Specifies the custom alphabet to use when sorting.

Use the Alphabet utility class from eslint-plugin-perfectionist/alphabet to quickly generate a custom alphabet.

Example: 0123456789abcdef...

ignoreCase

Controls whether sorting should be case-sensitive or not.

• true — Ignore case when sorting alphabetically or naturally (e.g., “A” and “a” are the same).
• false — Consider case when sorting (e.g., “a” comes before “A”).

specialCharacters

Controls whether special characters should be trimmed, removed or kept before sorting.

• 'keep' — Keep special characters when sorting (e.g., “_a” comes before “a”).
• 'trim' — Trim special characters when sorting alphabetically or naturally (e.g., “_a” and “a” are the same).
• 'remove' — Remove special characters when sorting (e.g., “/a/b” and “ab” are the same).

locales

Specifies the sorting locales. See String.prototype.localeCompare() - locales.

• string — A BCP 47 language tag (e.g. 'en', 'en-US', 'zh-CN').
• string[] — An array of BCP 47 language tags.

partitionByComment

Allows you to use comments to separate the module members into logical groups. This can help in organizing and maintaining large modules by creating partitions based on comments.

• true — All comments will be treated as delimiters, creating partitions.
• false — Comments will not be used as delimiters.
• string — A regexp pattern to specify which comments should act as delimiters.

partitionByNewLine

When true, the rule will not sort the members of a class if there is an empty line between them. This can be useful for keeping logically separated groups of members in their defined order.

// Group 1
interface BasicInformation {
  firstName: string;
  lastName: string;
 }

// Group 2
interface AgeInformation {
  age: number;
  birthDate: Date;
}

// Group 3
interface LocationInformation {
  street: string;
  city: string;
}

// Group 4
function updateAddress(address: string) {}
function updatePhone(phone?: string) {}

// Group 5
function editFirstName(firstName: string) {}
function editLastName(lastName: string) {}

newlinesBetween

Specifies how new lines should be handled between module member groups.

• ignore — Do not report errors related to new lines between object type groups.
• always — Enforce one new line between each group, and forbid new lines inside a group.
• never — No new lines are allowed in object types.

This options is only applicable when partitionByNewLine is false.

groups

[
  'declare-enum',
  'export-enum',
  'enum',
  ['declare-interface', 'declare-type'],
  ['export-interface', 'export-type'],
  ['interface', 'type'],
  'declare-class',
  'class',
  'export-class',
  'declare-function',
  'export-function',
  'function',
]

Allows you to specify a list of module member groups for sorting. Groups help organize module members into categories, prioritizing them during sorting.

Each module member will be assigned a single group specified in the groups option (or the unknown group if no match is found). The order of items in the groups option determines how groups are ordered.

Within a given group, members will be sorted according to the type, order, ignoreCase, etc. options.

Individual groups can be combined together by placing them in an array. The order of groups in that array does not matter. All members of the groups in the array will be sorted together as if they were part of a single group.

Predefined groups are characterized by a single selector and potentially multiple modifiers. You may enter modifiers in any order, but the selector must always come at the end.

export default class {}

customGroups

You can define your own groups and use regex for matching very specific module members.

A custom group definition may follow one of the two following interfaces:

interface CustomGroupDefinition {
  groupName: string
  type?: 'alphabetical' | 'natural' | 'line-length' | 'unsorted'
  order?: 'asc' | 'desc'
  selector?: string
  modifiers?: string[]
  elementNamePattern?: string
  decoratorNamePattern?: string
}

A module member will match a CustomGroupDefinition group if it matches all the filters of the custom group’s definition.

or:

interface CustomGroupAnyOfDefinition {
  groupName: string
  type?: 'alphabetical' | 'natural' | 'line-length' | 'unsorted'
  order?: 'asc' | 'desc'
  anyOf: Array<{
      selector?: string
      modifiers?: string[]
      elementNamePattern?: string
      decoratorNamePattern?: string
  }>
}

A module member will match a CustomGroupAnyOfDefinition group if it matches all the filters of at least one of the anyOf items.

 {
   groups: [
    ['export-interface', 'export-type'],
    'enum',
    'class',
+   'input-types-and-interfaces',
+   'output-types-and-interfaces',
+   'unsorted-functions',
    'unknown',
   ],
+  customGroups: [                                
+    {                                            
+       groupName: 'input-types-and-interfaces',
+       anyOf: [                                  
+         {                                       
+            selector: 'type',
+            elementNamePattern: 'Input'.         
+         },
+         {                                       
+            selector: 'interface',
+            elementNamePattern: 'Input'.         
+         },
+       ]                                         
+    },
+    {                                            
+       groupName: 'output-types-and-interfaces',
+       anyOf: [                                  
+         {                                       
+            selector: 'type',
+            elementNamePattern: 'Output'
+         },
+         {                                       
+            selector: 'interface',
+            elementNamePattern: 'Output'
+         },
+       ]                                         
+    },
+    {                                            
+       groupName: 'unsorted-functions',
+       type: 'unsorted',
+       selector: 'function',
+    },
+  ]                                              
 }