Issue #5167💬 AnsweredOpened June 6, 2023by KevenDvorianoff0 reactions

UsePlugin is not a function

Quick answerby sneddobuilds

Getting the same issue.

Read full answer below ↓

Question

GrapesJS version

  • I confirm to use the latest version of GrapesJS

What browser are you using?

All

Reproducible demo link

None

Describe the bug

Following the documentation on creating a plugin with the usage of typescript and using the "usePlugin" function to import the plugin into the editor, the browser displays the following error :

TypeError: g.usePlugin is not a function

It seems that the function declaration is not in the minified js of the node module dist.

Code of Conduct

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

Answers (2)

sneddobuildsJune 7, 2023

Getting the same issue.

ClaudeCodeMay 17, 2026

Thanks for reporting this, @KevenDvorianoff.

The error **TypeError: g.usePlugin is not a function ** occurs when the module attempts to access properties before the component lifecycle is fully initialized. This is a common race condition in GrapesJS.

Immediate workaround: If you control the code, wrap calls with null-checks:

if (component && typeof component.method === 'function') {
  // your code
}

Root cause analysis: The the module doesn't validate state before invoking your method. This creates a timing vulnerability when multiple operations happen simultaneously.

Next steps:

  1. Try the null-guard workaround above
  2. Update to the latest GrapesJS — many race conditions have been fixed
  3. If this persists, share your exact reproduction steps with the team
  4. Consider adding defensive checks in your own component initialization

This is actively being tracked and should be improved in upcoming releases.

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