includedImpacts is being ignored

[kirkpams]

I'm trying to use checkA11y for just serious and critical impact levels, but I keep getting moderate violations reported. Here is my call to checkA11y:

await checkA11y(page, null, {
  axeOptions: {
    includedImpacts: [ "serious", "critical" ],
  }});

Is there something I'm missing in the syntax (or a typo somewhere)? I keep getting the following results:

Running 14 tests using 4 workers
[chromium] › tests.spec.ts:337:2 › Remaining Basic Elements › Checking for accessibility
┌─────────┬─────────────────────┬────────────┬──────────────────────────────────────────────────────┬───────┐
│ (index) │         id          │   impact   │                     description                      │ nodes │
├─────────┼─────────────────────┼────────────┼──────────────────────────────────────────────────────┼───────┤
│    0    │ 'landmark-one-main' │ 'moderate' │      'Ensures the document has a main landmark'      │   1   │
│    1    │      'region'       │ 'moderate' │ 'Ensures all page content is contained by landmarks' │   9   │
└─────────┴─────────────────────┴────────────┴──────────────────────────────────────────────────────┴───────┘
  1) [chromium] › tests.spec.ts:337:2 › Remaining Basic Elements › Checking for accessibility 

    AssertionError: 2 accessibility violations were detected

How do I get checkA11y to stop reporting these two errors (which are known and I want to ignore)?