Hi, @mrlubos, sorry, ended up opening to see if CI would run, but it didn't.

Anyway, before realizing that this repo is no longer maintained, I cloned it into my computer, added a test case, and generated the snapshot that shows what I was going to report.

As you can see, if we have an enum with keys like +name and -name, and +total and -total, the library ends up ignoring the "opposite" key (of whatever comes first, + or -).

so, on the snapshot, we ended up with:

export enum EnumWithStringsWithPlusAndMinusSigns {
    _NAME = '+name',
    _TOTAL = '+total',
}

Instead of a type with four keys.