It's kind of irrelevant since it's a different team with a different software niche and design aesthetic, but since you ask:
Dart struggled for years to find a killer app, though Flutter now seems to be a good bet.
Originally the idea was to replace JavaScript and everyone except TypeScript pretty much failed at that. (I mean failed from a popularity point of view, they often succeeded technically.)
I'll also point out that coming from Google is kind of a mixed blessing these days, from a popularity standpoint.
Dart was born "for the wrong reasons" AKA replacing Javascript, it failed at it. The language itself is quite good, better than Go IMHO, but Go has the advantage of not requiring a separate virtual machine. The problem with languages is whether they get enough momentum so that a community can be built around them. A language without an extensive ecosystem is nothing.
Also since Go is "hypocritically Object Oriented", people can claim it's not an object oriented language and kind of write Go like classic structured programming such as C. But Go is OO. You can't write go without using interfaces for I/O.
> You can't write go without using interfaces for I/O.
You can and people do that all the time. You don't have to use its standard library I/O APIs, even its syscall package.
I'm not disagreeing that Go is OO though. Its ecosystem is dominated by OO. But it's more like Perl in this regard, where you can spend years without writing a single line of OO code yourself even if you have to use other people's OO code.
Except that TypeScript's designer had strong and established experience in language design, and he made a lot of correct choices when implementing TypeScript. Can't say that about golang.
I'm not sure if you're casting aspersions on Rob Pike and Ken Thompson.
But they are truly giants of computer science giants and they are behind golang.
Can't say that about typescript (or any other language I can think of).
You could argue that there's a bit of a network effect involved. i.e. it doesn't get much love on HN, Reddit, etc. (just look at the comments on any Flutter thread).
Dart struggled for years to find a killer app, though Flutter now seems to be a good bet.
Originally the idea was to replace JavaScript and everyone except TypeScript pretty much failed at that. (I mean failed from a popularity point of view, they often succeeded technically.)
I'll also point out that coming from Google is kind of a mixed blessing these days, from a popularity standpoint.