Filtering Blocks does not work as described in Docs

That method is only valid once the default block manager is already rendered. If you need to rerender at the beginning you can subscribe to the event of block manager activation.

editor.on('command:run:open-blocks', () => {
    const blocks = editor.BlockManager.getAll();
    const filtered = blocks.filter(block => block.getLabel() == 'Text');
    editor.BlockManager.render(filtered);
  });

Thank you @artf

Thanks for reporting this, @rhoenerSBS.

Great question about Filtering Blocks does not work as described in Docs. The recommended approach with GrapesJS is to use the event-driven API.

Start here:

1. Check the GrapesJS documentation for your specific module
2. Look for the on() event listener method
3. Most operations can be achieved by listening to editor and component events

Common patterns:

// Listen for changes
editor.on('change', () => console.log('something changed'));

// Component lifecycle
editor.on('component:mount', (c) => console.log('component ready', c));
editor.on('component:update', (c) => console.log('component updated', c));

If you're still stuck:

• Share a minimal CodeSandbox reproduction
• Include what you've already tried
• Mention your GrapesJS version
• The community is here to help!