Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1275
A pending change revamps a lot of how ESLint, Prettier, and Jest are configured in the repo, along with moving the world to TypeScript (and adding tsc usage).
That still needs some work to split up, but this change adds types used in our unit tests that I found were missing.
Reviewed By: yungsters
Differential Revision: D45506781
fbshipit-source-id: c4c5cb3aeff95f16bd54121e2ca0e042b6429ba0
f3633a256b