Support --ignoreStatic

[nicojs]

We want StrykerJS to be able to ignore static mutants. This is a requirement for supporting native ES modules, as well as a performance booster for others.

See #2922

[nicojs]

Work on --ignoreStatic has started in the feat/ignore-static branch.

The preliminary results are great! Tests with running Stryker on @stryker-mutator/core:

Without ignoring static:

INFO MutationTestExecutor Done in 8 minutes 50 seconds.

With --ignoreStatic

INFO MutationTestExecutor Done in 3 minutes 56 seconds.

Note: I've disabled the typescript-checker for this test run

The difference is 189 mutants out of a total of 3115. So ~6% of all mutants cost more than 50% of the execution time. Absolutely mindblowing 🤯

The resulting mutation score is different (as to be expected).

[nicojs]

Closed with #3284