[1] https://techcrunch.com/2015/03/25/google-will-not-integrate-...
Sorry you had poor experiences. :-(
That said, it was true that Dart was used heavily internally in that time frame. It was and still is, by Ads (ads.google.com) - that's a non-Flutter Dart app and still (to the best of my knowledge) the largest Dart app around. Before Flutter, we went through a period of primarily prioritizing internal customers. That work was often not visible externally.
We did do the shift to Dart 2 in that time period though. That was a fairly massive change to the language that began independently of Flutter. It was a nice timing that Dart 2 shipped at the same time as Flutter 1.
Let me be blunt, the work was never visible externally. What was visible externally is major language designers leaving the team (Lars Bak), Updates to the language slowing or stopping all together, the chrome team deciding to abandon dartvm in chrome, the angular team deciding to use typescript for angular 2.0, and Dart angular being abandoned (even as it was still being advertised on dart.dev!).
What other conclusion was an outsider to draw other than "Ok, google must be done with dart"?
What was the plan if flutter never happened? Would google ads continue to use dart?
Like I said, happy that you and your team are now enjoying some nice popularity. I jumped on dart early because I thought it was overall a good idea and decent language. However, once bitten, twice shy.
I'm really sorry you got burned by the early experience. It was a hard time for Dart users. It was a hard time on the team too. It felt like we were wandering in the wilderness for a while and struggling to agree on what language our users wanted us to build for them.
I think where we've landed is a much better product, but I'm sorry that our churn getting there caused you pain.
And I really appreciate you saying this. I get that what I'm saying is harsh and probably comes off as whiny/ungrateful. I'm mostly just venting because of the original "Why are people mad about dart in HN" comment and explaining my position there.
Dart does look like it's moving forward in a good direction and I wish it all the best. It's certainly great that the language and ecosystem are seeing a fair bit more adoption.
I was surprised to see Dart 2.0 come out and Dart 3.0 has surprised me even more.
That's the period that left a bad taste in my mouth. IDK who chose to use Dart for flutter, but by doing so they revived a basically dead language.