Adam Mackintosh

Confirmed, wiping `node_modules` and `yarn.lock` and doing `yarn install` fixed mine. It works again following that as `yarn test`. I have a feeling my reason was the same as ryanbrainard's....

I had an issue where my CSS for `a:visited` was appearing after `a:active` in my CSS file and it was causing the `` from react-router to not work. If anyone...