[graphiql] Prettify Query fails

[OneCyrus]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

"Prettify Query" fails with the following error:

Expected Behavior

prettify query formats the query (and potentially the variables)

Steps To Reproduce

1. use latest graphiql 5 version
2. render component
3. write a query
4. click "Prettify Query" -> see error in console

Environment

• GraphiQL Version: 5.2.0
• OS: ubuntu
• Browser: edge stable
• Bundler: vite
• react Version: 19

Anything else?

No response

[OneCyrus]

looks like this issue happens only in dev builds. prod builds with vite work. strange.