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bug: v6, describe how to account for es modules in project
See original GitHub issuePrerequisites
- I have read the Contributing Guidelines.
- I agree to follow the Code of Conduct.
- I have searched for existing issues that already report this problem, without success.
Ionic Framework Version
- v4.x
- v5.x
- v6.x
Current Behavior
When using next-build with ionic/core
I get this error with beta 6 version 6 or greater
^^^^^^
SyntaxError: Unexpected token 'export'
Expected Behavior
Would build like it does with beta 6 version 5
Steps to Reproduce
run next build with ionic beta 6 version 6 or great with ionic/core
Code Reproduction URL
No response
Ionic Info
No response
Additional Information
No response
Issue Analytics
- State:
- Created 2 years ago
- Reactions:1
- Comments:7 (3 by maintainers)
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Actually there are 2 issues here, 1 Ionic and 1 non-Ionic. The Ionic issue is that the custom elements generated directly reference
HTMLElementwhich is not defined in an SSR environment. The fix for this likely needs to be in the Stencil, so I will work with them to resolve that. Thanks again!Ionic 6 will be using ES Modules, and it looks like Next.js still has a few issues with supporting ES Modules: https://github.com/vercel/next.js/issues?q=is%3Aissue+is%3Aopen+Unexpected+token+'export'
As a temporary workaround, you can use https://www.npmjs.com/package/next-transpile-modules which is a Next.js plugin that will transpile ES Modules to Common JS (CJS).
While we do not consider this a bug in Ionic, we are still discussing the best path forward in terms of documentation and migration guides. I will update this thread when I have more to share. Thanks!