appProcess.broadcastMessage

API reference for the appProcess.broadcastMessage method.

This version of the API is a preview. Preview APIs are unstable and may change without warning. You can't release public apps using this API until it's stable.

Broadcasts a message to all of the app's active processes, not including the current process.

Usage

Broadcast primitive values

import { appProcess } from '@canva/platform';

// Broadcasting a string
appProcess.broadcastMessage('REFRESH_REQUESTED');

// Broadcasting a number
appProcess.broadcastMessage(42);

// Broadcasting a boolean
appProcess.broadcastMessage(true);

TYPESCRIPT

Broadcast simple objects

import { appProcess } from '@canva/platform';

appProcess.broadcastMessage({
  id: 'user-123',
  name: 'John Doe',
  active: true
});

TYPESCRIPT

Broadcast complex objects

import { appProcess } from '@canva/platform';

appProcess.broadcastMessage({
  type: 'DOCUMENT_UPDATE',
  timestamp: Date.now(),
  payload: {
    documentId: 'doc-123',
    version: 2,
    metadata: {
      title: 'Project Alpha',
      tags: ['draft', 'review-needed'],
      collaborators: [
        { id: 'user-1', role: 'editor' },
        { id: 'user-2', role: 'viewer' }
      ]
    }
  }
});

TYPESCRIPT

Parameters

messageanyRequired

The message to be broadcasted. This can be any kind of structured data.

Returns

void