Store & Sessions

The in-memory store is the most-missed feature of classic Baileys — in AunuBaileys it is back, complete and typed.

makeInMemoryStore

import { makeInMemoryStore } from 'aunubaileys'

const store = makeInMemoryStore({}) // options: { logger, chatKey, labelAssociationKey }
store.bind(sock.ev) // the store now follows every socket event

Store contents: chats (KeyedDB), contacts, per-JID messages, groupMetadata, connection state, presences, labels, and labelAssociations.

Most-used methods

Method	Purpose
`store.loadMessage(jid, id)`	Fetch one stored message — the key to retries & quoting
`store.loadMessages(jid, count, cursor)`	Load a chat's message history
`store.mostRecentMessage(jid)`	The latest message in a chat
`store.fetchGroupMetadata(jid, sock)`	Group metadata (store cache first, socket fallback)
`store.fetchImageUrl(jid, sock)`	Profile picture URL
`store.fetchMessageReceipts(key)`	Read receipts for a message
`store.getChatLabels(chatId)` / `getMessageLabels(id)`	Labels per chat / per message
`store.toJSON()` / `store.fromJSON(json)`	Serialize the whole store

Persisting the store to a file

import fs from 'node:fs'

// save periodically
setInterval(() => {
  fs.writeFileSync('./store.json', JSON.stringify(store.toJSON()))
}, 60_000)

// restore at startup (if the file exists)
if (fs.existsSync('./store.json')) {
  store.fromJSON(JSON.parse(fs.readFileSync('./store.json', 'utf-8')))
}

Wiring the store for message retries

const sock = makeWASocket({
  auth: state,
  getMessage: async (key) => {
    const msg = await store.loadMessage(key.remoteJid, key.id)
    return msg?.message || undefined
  }
})

Without getMessage, WhatsApp cannot ask for a re-send of a message that failed to decrypt — and recipients see "waiting for this message".

Sessions: useMultiFileAuthState

const { state, saveCreds } = await useMultiFileAuthState('auth')
sock.ev.on('creds.update', saveCreds)

Atomic writes (v1.0.2): session files are written atomically in AunuBaileys — a process dying mid-write no longer leaves half-written credential files. The compatibility exports initInMemoryKeyStore() and processedMessages are also available for older scripts.