Poor ecosystem? Have you used web frameworks like Express/Koa + a good linter + a modern IDE (e.g. VS Code) and of course npm? It's a breeze working with those tools. Productivity skyrockets and if you think a little bit about your design decisions then typescript (plus the proper support for it) gives you a huge hand in writing correct code from the first try. I think that if you want your opinion to be taken seriously you should propose an alternative. I would be interested to see a better ecosystem.