ts-messenger-api (unmaintained!)

Unofficial API for Facebook Messenger. This package provides programmatic access to Facebook Messenger activity like sending and receiving messages on behalf of actual user.

⚠ Note: This package works only on NodeJS v15 and higher!

Since Facebook makes frequent modification to their API, please bear in mind, that this library is prone to developing bugs, that may not be immediately fixed.

Installation

You can install the package with NPM:

npm i ts-messenger-api

Quick Demo

import facebookLogin from 'ts-messenger-api';
// for plain JavaScript use this:
// const facebookLogin = require('ts-messenger-api').default;

const api = await facebookLogin({
  email: 'your.email@example.com',
  password: 'your_messenger_password'
});

const friends = await api.getFriendsList();

await api.listen();
await api.sendMessage({ body: 'Hi' }, friends[0].id);

Message Sending

There are some examples of sending messages below. First of all, start with await api.listen(); to establish a websocket connection.

Plain text message

api.sendMessage({ body: 'This' }, friends[3].id);

Attachment message

Facebook automatically recognises file type (picture, video, audio or general file).

import fs from 'fs';
api.sendMessage({ attachment: fs.createReadStream('path-to-file') }, friends[3].id);
// or send multiple attachments in one message
api.sendMessage(
  {
    attachment: [
      fs.createReadStream('path-to-file1'),
      fs.createReadStream('path-to-file2'),
      fs.createReadStream('path-to-file3')
    ]
  },
  friends[3].id
);

Replying to a message

api.sendMessage(
  {
    body: 'This is my reply to your question',
    replyToMessage: originalMessageId
  },
  friends[3].id
);

Similarly, you can send a message with mentions. The types for that are in the docs.

Receiving messages and events

First of all, start with await api.listen() to establish a websocket connection. You can access the EventEmitter by using the returned value of this function or get it directly from api.listener property.

Posible event types are:

• "message" for all incoming messages and events (for listening to events, specify the options argument as {listenEvents: true} while login)
• "presence" for information about friends' active state
• "typ" for incoming typing indicators
• "error" for possible errors caused by websocket communication

api.listener.addEventListener('message', (msg: AnyIncomingMessage) => console.log(msg));
api.listener.addEventListener('error', err => console.error(err));

Type of an incoming message is defined in msg.type.

Login with AppState

You can login to Facebook account for the second time without the need to provide login credentials (email and password). This feature is provided with AppState (array of cookies provided by Facebook). We advise you to save the AppState right after first successful login using:

// after first login
fs.writeFileSync('./appState.json', JSON.stringify(api.getAppState()));

Now you can use the saved cookies to log in later.

// using the saved AppState
let api: Api | null = null;
try {
  api = (await login(
    {
      appState: JSON.parse(fs.readFileSync('./appState.json').toString())
    },
    { listenEvents: true }
  )) as Api;
} catch (error) {
  // something like `console.error(error);`
}

Docs

You can find the documentation here.

Features

The following table lists all features that are implemented or are destined to be implemented in the future. If you would like to have some feature implemented do not hesitate to submit PR.