Take components into account in .map() #6
Description
.map() does not take components into account, causing problems:
- If a glyph references a component, but that component is mapped and renamed, the reference will break
- If a glyph references a component and is mapped but the component isn’t, the component will be missing and the reference will break
- If a subset glyph references a component not also in the subset, the reference will break
A check should be added that tests:
- Does a mapped glyph reference a component? Then the component should be preserved.
- Is a mapped glyph itself referenced as a component? If the glyph referencing it will be preserved, its reference should be updated.