@shopify/react-i18n has broken since v11 (babel bug)

[jasonwilliams]

What version of Next.js are you using?

10.2.4-canary.2 and above

What version of Node.js are you using?

15.0.0

What browser are you using?

Chrome

What operating system are you using?

MacOS

How are you deploying your application?

Other

Describe the Bug

We use react-i18n along with Next. It works by using Babel to compile all the translations during the build step. I tried using v11 of Next and translations did not work, i was getting errors or missing translations.

I managed to bisect the versions of Next down to 10.2.4-canary.2 being the issue. Looking at the releases notes I'm assuming the new babel mode has broken it somehow.

The error is:

error: Error: Missing translation for key: X in locale: en

Expected Behavior

Translations work on our NextJS site

To Reproduce

Working

• clone https://github.com/jasonwilliams/nextjs9-typescript-server-vscode-example/tree/nextBugI18n (make sure you're on branch nextBugI18n)
• npm force install npm i -f
• npm run dev
• navigate to http://localhost:3002/items/2
• You should see "Hello"

Failing

• (assuming you've ran the above)
• in package.json change next to version 10.2.4-canary.2
• npm i -f
• npm run dev
• navigate to http://localhost:3002/items/2
• You should see a blank page and an error in the console

CC @samrmur

Possibly related to: #26539

[github-actions]

Please verify that your issue can be recreated with next@canary.

Why was this issue marked with the please verify canary label?

We noticed the provided reproduction was using an older version of Next.js, instead of canary.

The canary version of Next.js ships daily and includes all features and fixes that have not been released to the stable version yet. You can think of canary as a public beta. Some issues may already be fixed in the canary version, so please verify that your issue reproduces by running npm install next@canary and test it in your project, using your reproduction steps.

If the issue does not reproduce with the canary version, then it has already been fixed and this issue can be closed.

How can I quickly verify if my issue has been fixed in canary?

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My issue has been open for a long time, why do I need to verify canary now?

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Useful Resources

• How to Contribute to Open Source (Next.js)
• How to create a Minimal, Complete, and Verifiable example
• Reporting a Next.js bug
• Next.js Triaging issues

[balazsorban44]

This issue has been automatically closed because it wasn't verified against next@canary. If you think it was closed by accident, please leave a comment. If you are running into a similar issue, please open a new issue with a reproduction. Thank you.

[github-actions]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.