Google has close to the best internal tooling in the industry for a decade or so.
Then the Google engineers who joined Facebook missed it so much that they built a better replacement.
Replacement for what? Google has some good internal tools, mostly the older ones. They're lucky to be using React instead of Angular at Facebook though.
Replacement for what? Google has some good internal tools, mostly the older ones. They're lucky to be using React instead of Angular at Facebook though.