How to run this Babel project?

[nianxiongdi]

➜  babel git:(main) ✗ npm i
npm ERR! code EUNSUPPORTEDPROTOCOL
npm ERR! Unsupported URL Type "workspace:": workspace:*

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/didi/.npm/_logs/2020-11-04T09_22_15_115Z-debug.log

[nicolo-ribaudo]

We use yarn: you'll need to run the yarn command to install the dependencies.
See https://github.com/babel/babel/blob/main/CONTRIBUTING.md for more info.