Added Typescript group checking 🚀

[danny12321]

Add grouping mutants to the @stryker-mutator/typescript-checker to improve performance.

The typescript checker is slow because mutants are checked for compile errors one by one. Each time a mutant is checked, TypeScript will do full type-checking. This is sped up by running multiple checkers in parallel, using typescript's --watch mode, and only compiling in memory. Yet still, this is very slow, as a rule of thumb: 10x slower than not enabling this checker.

This PR improves this by grouping mutants unrelated to each other in the same typescript compilation run. Any compilation errors that result from one of the mutants in a group can always be associated with one mutant.

One downside to this approach is that a TypeScript compilation sometimes forgets to report some of the errors (although it is a design goal of TypeScript to report them all). For example microsoft/TypeScript#46272

This is why you disable this grouping behavior by adding:

{
  "typeScriptChecker": {
    "prioritizePerformanceOverAccuracy": false
  }
}

This is just a draft PR. Todo:

• fix tests
• add options to choose testing strategy (Naming TS Checker performance strategy 💭 #3899)

[nicojs]

@danny12321 CI pipeline is failing. It seems that you're still using structuredClone. See my comment here: #3900 (comment)

Can we move this PR out of "draft"?

[danny12321]

@danny12321 CI pipeline is failing. It seems that you're still using structuredClone. See my comment here: #3900 (comment)

Can we move this PR out of "draft"?

Oops, thought we had removed all of them. I have fixed it now.

[nicojs]

Great job! Can't wait to get this merged 😍

[nicojs]

I've noticed that the coverage on some files is low. I've added unit tests to test the edge cases of the typescript-checker.ts file, but the typescript-compiler.ts tests are still missing some important code paths. See my remark there.

[odinvanderlinden]

Great work guys 🎉

[nicojs]