TypeScript versioning is a joke on Semver that Daniel and team love to play. They go from 3.9 to 4.0 because as you all know 3.10 would be impossible!
Every version of TypeScript is potentially a breaking change so if they wanted to be pure Semvers we would've been at TypeScript version 100 or more which could make people feel overwhelmed about being behind with their current version.
As always a great release! Congratulations to the team! We love TypeScript at my team.
I've never seen someone who wants to go back from TypeScript to plain JavaScript. Design decisions made about structural comparison and not much focus on correctness made TypeScript an easy forgiving type system that hold developer's hand without being a pain in the bottom. The way TypeScript interacted with the community and received feedback also helped its success.
Every version of TypeScript is potentially a breaking change so if they wanted to be pure Semvers we would've been at TypeScript version 100 or more which could make people feel overwhelmed about being behind with their current version.
As always a great release! Congratulations to the team! We love TypeScript at my team.
I've never seen someone who wants to go back from TypeScript to plain JavaScript. Design decisions made about structural comparison and not much focus on correctness made TypeScript an easy forgiving type system that hold developer's hand without being a pain in the bottom. The way TypeScript interacted with the community and received feedback also helped its success.