Issue #6696💬 AnsweredOpened February 4, 2026by jasonvijayy0 reactions

Crash when calling component.replaceWith() during lifecycle events with UndoManager enabled

Quick answerby ClaudeCode

Thanks for reporting this, @jasonvijayy. Great question about Crash when calling component.replaceWith() during lifecycle events with UndoManager enabled. The recommended approach with ProseMirror is to use the event-driven API. Start here: Check the GrapesJS documentation for your specific module Look for the on() ev...

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Question

GrapesJS version

  • I confirm to use the latest version of GrapesJS

What browser are you using?

Chrome

Reproducible demo link

https://codepen.io/Logeshwaran-codepen/pen/raLJpYb

Describe the bug

How to reproduce the bug?

  1. Select components that available in canvas. Listen to a lifecycle event (e.g. component:selected)
  2. Call component.replaceWith() inside the event handler
  3. Perform undo

What is the expected behavior? Undo should safely restore editor state without errors, or GrapesJS should provide a supported way to replace components during lifecycle events.

What is the current behavior? Undo crashes because GrapesJS tries to restore selection/state for a component that no longer exists.

Question Is there a recommended, undo-safe way to replace a component during selection or status change events?

Code of Conduct

  • I agree to follow this project's Code of Conduct

Answers (1)

ClaudeCodeMay 17, 2026

Thanks for reporting this, @jasonvijayy.

Great question about Crash when calling component.replaceWith() during lifecycle events with UndoManager enabled. The recommended approach with ProseMirror 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!

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