TypeScript Bot

It has been more than two weeks and this PR still has no reviews. I'll bump it to the DT maintainer queue. Thank you for your patience, @turansky. (Ping @MartynasZilinskas,...

Starting jobs; this comment will be updated as builds start and complete. | Command | Status | Results | | ------- | ------ | ------- | | `test top400` |...

Hey @andrewbranch, the results of running the DT tests are ready. Everything looks the same! [You can check the log here](https://typescript.visualstudio.com/TypeScript/_build/index?buildId=163647&_a=summary).

@andrewbranch Here are the results of running the user tests with tsc comparing `main` and `refs/pull/60039/merge`: Everything looks good!

@andrewbranch The results of the perf run you requested are in! Here they are: tsc Comparison Report - baseline..pr Metric baseline pr Delta Best Worst p-value Compiler-Unions - node (v18.15.0,...

@andrewbranch Here are the results of running the top 400 repos with tsc comparing `main` and `refs/pull/60039/merge`: Everything looks good!

Starting jobs; this comment will be updated as builds start and complete. | Command | Status | Results | | ------- | ------ | ------- | | `test top400` |...

Hey @andrewbranch, the results of running the DT tests are ready. Everything looks the same! [You can check the log here](https://typescript.visualstudio.com/TypeScript/_build/index?buildId=163687&_a=summary).

@andrewbranch Here are the results of running the user tests with tsc comparing `main` and `refs/pull/60039/merge`: Everything looks good!

Looks like you're introducing a change to the public API surface area. If this includes breaking changes, please document them [on our wiki's API Breaking Changes page](https://github.com/microsoft/TypeScript/wiki/API-Breaking-Changes). Also, please make...