XXX: Wechaty User Class (WUC) can not be instantiated directly!

[huan]

TL;DR

If you come here by following the error message:

UserClass: Wechaty User Class (WUC) can not be instantiated directly! See: https://github.com/wechaty/wechaty/issues/1217**

Solution

Use wechaty.UserClass instead of using UserClass directly.

For examples:

- const rooms = await Room.findAll(/topic/i)
+ const rooms = await wechaty.Room.findAll(/topic/i)

Background

Error Message

1. Error: static puppet not found for Contact/Room/Friendship/Message
2. Error: class can not be instanciated directly!
3. Error: must not use the global Message/Contact/Room. use a cloned child via cloneClass instead

Currently, the Contact, FriendRequest, Message, and Room classes will not be able to instantiate directly, because they must attach with a Puppet first.

They need to be cloneClass()-ed first, then attach the puppet, and at last they will be ready for use by:
wechaty.Contact

Do Not

import { Room } from 'wechaty'
const room = await Room.create(...)

The above code will throw error.

Do

- import { Room } from 'wechaty'
+ import { Wechaty } from 'wechaty'

- const room = await Room.create(...)
+ const wechaty = new Wechaty()
+ const room = await wechaty.Room.create(...)

So does Contact, FriendRequest, and Message.

See Also

1. Wechaty Multi-Instance Suport [todo] allow Wechaty to be multi-instance #518
2. NPM clone-class
3. Behavior not expected when the class static property initialized in defination. huan/clone-class#5

[lijiarui]

It may should be

const wechaty = Wechaty.instance()
const room = await wechaty.Room.create(...)

[yarray]

I'm quite confused by "So does Contact, FriendRequest, and Message"... The property wechaty.Contact seems to be a Function without a method named "create". So how should I create a contact with id actually?

[huan]

@yarray there's an example that demonstrated how to create a new room, hope that could help you to understand.

https://github.com/Chatie/wechaty-getting-started/blob/50540d93fec3566ae1880cca42fc5d4ee70607d1/examples/advanced/room-bot.js

BTW: You can never create a contact with id because you can only find it. wechaty.Contact.Find() is the right way to fulfill your case.

[lhr0909]

@lijiarui @huan What happens if we need to use the type definitions for these classes?

See _contactPayload and the WechatBotAdapter, which currently we get yelled at for the extended WechatBotAdapter for the same issue.

[lhr0909]

Well, crisis averted. Sorry for the ping

[zulkifalaziz]

How can I receive and display an image in wechaty Python? I have tried finding the solution in documentation but no success.