I'm also a stronger believer in TypeScript not because it's necessarily "better" than Dart, whatever that would mean, but because it was designed from a much MU

I'm also a stronger believer in TypeScript not because it's necessarily "better" than Dart, whatever that would mean, but because it was designed from a much MUCH more pragmatic perspective with TypeScript being a mere superset of Javascript. So while both transpile to Javascript and that's great when it comes to cross-browser reach, a large Dart codebase makes me nervous since there's a high barrier of both entry and exit if Google would abandon the project, which they have shown themselves to be good at doing, especially with little to no forewarning. TypeScript's approach just feels more sensible to me. I like the vision set by Dart -- a complete toolkit in language as well as API for the modern web, client as well as server -- and while TypeScript may not share it, it does share the vision of greatly simplifying large scale web application development. Further, I think it even surpasses Dart on that front for above reasons and general workflow and migration reasons which cannot be underestimated in particular for a new language.