Consider upgrade to Yarn 2

Looks like yarn has a version 2, though I'm not sure we need anything from it just yet and they're going to support 1.x updates for the near future.

Might be worth it if yarn2 becomes more widely adopted or if there's some feature we want

https://yarnpkg.com/migration/overview
https://yarnpkg.com/getting-started/qa#why-is-the-yarn-package-on-npm-still-on-1x

Start by reviewing the linked Yarn migration overview and the Yarn 1.x support explanation. Determine whether this project needs a Yarn 2 feature or broader adoption before proposing an upgrade; done means reaching a documented decision with the required migration scope identified.

Written by the indexing model from the issue text.