Support for the experimental syntax 'decorators-legacy' isn't currently enabled

[16oh4]

Hello ts-jest team,

I recently upgraded the following dependencies
"jest": "26.6.1" --> "jest": "27.3.1"

"ts-jest": "26.4.3" -->"ts-jest": "27.0.7"

My jest config stayed the same.

I ran into an issue where Babel seems to be used by Jest. My test failed with
SyntaxError: ..... Support for the experimental syntax 'decorators-legacy' isn't currently enabled

Followed by a Babel stack trace. Is Babel being used rather than ts-jest?

I am using preset: 'ts-jest' in my jest.config.ts.

Thanks

[ahnpnl]

I believe you are using toMachInlineSnapshot in your codes?

[16oh4]

Yes indeed I was. I switched to toMatchSnapshot() and the error was gone! Is toMatchInlineSnapshot not supported?

[ahnpnl]

I'm not sure what has changed to that Jest API, but when I debugged it, I saw that Jest uses the original source codes for Babel to create AST. Because the original source codes contain decorator and Babel didn't see decorator plugin so it throws error.

This error is Jest error so I'd suggest you to report there. It's not something ts-jest can handle.

[16oh4]

Cool! Thanks @ahnpnl