There are a number of times something like `"pathsAppend": [], "libsAppend": [], "referencesAppend": [], "includesAppend": []`
Where we want to ADD to what ever the default/extended options are, rather than replace/override.

Libs being the most annoying even in 'standard' circumstances without extending another tsconfig, but the fact that 'adding' a single lib, REMOVES ALL the default ones added by the "target" setting. And you can't even get a definitive list of what those libs were..