# Stream message

The [`StreamMessage`](https://github.com/GetStream/stream-chat-angular/blob/master/projects/stream-chat-angular/src/lib/types.ts) type represents a chat message.

The class extends the base Stream [message](https://getstream.io/chat/docs/javascript/send-message/#message-response-structure) format with the following properties:

| Name          | Type     | Description                                                                                                   |
| ------------- | -------- | ------------------------------------------------------------------------------------------------------------- |
| `readBy`      | string[] | The list of members that read the message (includes up to 100 members)                                        |
| `translation` | string   | The message translation if message was translated with [auto-translation](https://getstream.io/chat/docs/javascript/translation/) |


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This page was last updated at 2026-08-07T20:37:39.953Z.

For the most recent version of this documentation, visit [https://getstream.io/chat/docs/sdk/angular/v5/types/stream-message/](https://getstream.io/chat/docs/sdk/angular/v5/types/stream-message/).