masmatsum

I got similar error and created a new issue with reproduction detail (ex. link to repo). Please see https://github.com/facebook/jest/issues/10647

@latata I found the solution for my own case. If you are using `.babelrc.js`, https://github.com/facebook/jest/issues/10647#issuecomment-747794046 may help you.

For Japanese page, I can create PR by myself (I am a native speaker of Japanese language). Can anyone work on French, Italian and Chinese pages?

@kirisky Thank you! 謝謝～