How do I build and run this on Windows?

When I clone this repo and run yarn start I am greeted by a bunch of **error  Expected linebreaks to be 'LF' but found 'CRLF'  linebreak-style** errors and there is no obvious way to proceed.  I assume if this didn't matter the yarn server would start on localhost:4200?  I have an improvement I would like to make, as I use this extension all the time. Thanks.