Public APIs not normalizing paths

As discussed in this issue, the parseJsonConfigFileContent public API can fail on Windows when passed non-normalized paths (that is, paths containing backslash delimiters).

It appears that this is not the only public API with which this occurs. The following two public API functions call getDirectoryPath with non-normalized paths:

• findConfigFile
• resolveTripleslashReference

The first of these has caused numerous issue with tsify:

• Replace backslashes in the current directory
• switch to hard-coded tsconfig.json string
• Replace backslashes

Is there any guidance regarding how module authors are supposed to use public TypeScript APIs that accept paths? Are paths always expected to be normalized? If so, that puts a burden on module developers. Would it not be preferable for the parseJsonConfigFileContent, findConfigFile, resolveTripleslashReference functions to normalize any paths before calling functions - like getDirectoryPath - that expect/assume normalized paths?