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Lists ​

The Lists module provides utilities for working with Nostr lists, including both public and private lists (like bookmarks, mute lists, etc.). It handles list creation, encryption, and manipulation.

Core Types ​

List Parameters ​

typescript
interface ListParams {
  kind: number      // List kind (e.g., 10000 for mutes)
}

List Structure ​

typescript
interface List extends ListParams {
  publicTags: string[][]   // Publicly visible tags
  privateTags: string[][]  // Encrypted tags
  event?: DecryptedEvent   // Original event if list exists
}

Published List ​

typescript
interface PublishedList extends List {
  event: DecryptedEvent    // Required event for published lists
}

List Creation ​

Create New List ​

typescript
function makeList(list: ListParams & Partial<List>): List

// Example
const muteList = makeList({
  kind: 10000,
  publicTags: [['d', 'mutes']],
  privateTags: [['p', 'pubkey1'], ['p', 'pubkey2']]
})

Read Existing List ​

typescript
function readList(event: DecryptedEvent): PublishedList

// Example
const list = readList(decryptedEvent)

List Operations ​

Get All Tags ​

typescript
function getListTags(list: List | undefined): string[][]

// Example
const allTags = getListTags(list) // Combines public and private tags

Remove Items ​

typescript
// Remove by predicate
function removeFromListByPredicate(
  list: List,
  pred: (t: string[]) => boolean
): Encryptable

// Remove by value
function removeFromList(
  list: List,
  value: string
): Encryptable

Add Items ​

typescript
// Add public items
function addToListPublicly(
  list: List,
  ...tags: string[][]
): Encryptable

// Add private items
function addToListPrivately(
  list: List,
  ...tags: string[][]
): Encryptable

Usage Examples ​

Creating a Private List ​

typescript
// Create new mute list
const muteList = makeList({
  kind: 10000,
  publicTags: [
    ['d', 'mutes'],
    ['name', 'My Mute List']
  ]
})

// Add items privately
const updated = addToListPrivately(
  muteList,
  ['p', 'pubkey1'],
  ['p', 'pubkey2']
)

// Add new items publicly
const addItems = addToListPublicly(
  list,
  ['p', 'pubkey3'],
  ['p', 'pubkey4']
)

// Encrypt and publish
const encrypted = await updated.reconcile(encrypt)

Reading and Updating Lists ​

typescript
// Read existing list
const list = readList(decryptedEvent)

// Remove item
const removeItem = removeFromList(list, 'pubkey1')

// Remove by predicate
const noMentions = removeFromListByPredicate(
  list,
  tag => tag[0] === 'p'
)

Working with Tags ​

typescript
// Get all list tags
const tags = getListTags(list)