Custom types dont seem to map properly for sfcc server execution

[z1haze]

customtypes.js takes things like enum-of-int, and maps it over to an enum type, but those types don't translate over into SFCC script, where the code actually runs. I am trying to understand how to get actually get the types for the native system objects in typescript that aren't mapped incorrectly. for example, a custom attribute of type enum-of-int is actually not an enum of number, but rather objects with value and displayValue fields. Trying to use this type the way it has to be used in serverside code (on sfcc), results typescript errors. Running the code to satisfy the compiler results in runtime errors. Please advise.

My current "fix" for this is to always call valueOf() on the enum. This exists both in sfcc and ecma