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.
Then the Google engineers who joined Facebook missed it so much that they built a better replacement.
Closure was the homegrown framework that's everywhere. It is a different flavor of bad than Angular. Angular was basically "You too can make your Javascript look like HTML", Closure is "You too can make your Javascript look like Java", and nobody bothered to ask Why? For that matter, React was "You too can make your Javascript look like Ocaml." JQuery was the only framework that really let Javascript be Javascript (other than writing in vanilla JS, which post-ES2015 wasn't as insane as it sounds).
My comment was from a decade old perspective