When they get big enough, they add the static analysis on top of the language to make it more robust. There's a good read by Instagram (all Python) on this: htt

When they get big enough, they add the static analysis on top of the language to make it more robust. There's a good read by Instagram (all Python) on this: https://instagram-engineering.com/static-analysis-at-scale-an-instagram-story-8f498ab71a0c https://instagram-engineering.com/static-analysis-at-scale-a...