`npm install` fails on Windows

[tmtron]

npm install

> joi-extract-type@15.0.8 prepare D:\dev_no_backup\joi-extract-type
> rm -rf dist && tsc

'rm' is not recognized as an internal or external command,
operable program or batch file.

I suggest to use rimraf

BTW: may I ask, why there is a package-lock.json and a yarn.lock file?
Which one should we use: npm or yarn?