https://github.com/Microsoft/TypeScript/blob/a56b272d3891916a8debe36087fe7563bbade164/tests/baselines/reference/api/tsserverlibrary.d.ts#L10612 currently includes function getParentNodeInSpan, but in src/services/utilities.ts, that function appears in an /* @internal */ namespace, so it shouldn't appear in the API. (There hasn't been a publish yet this week so I don't know if it would appear in the published API.)

I checked in the commit before #24850 (c34a6d9) and the function was not present then. The file was also only 8604 lines, while now it has 14161 lines. CC @RyanCavanaugh