Why does the types not allow for optional properties?

[marcusds]

From a functionality perspective the library works fine with having props that aren't always there, but the primary types used do not like and it's causing me some real headaches.
Is there a reason we can't make JSON allow undefined?

For reference these are the types that I would like to see support undefined.

export type JSON = null | boolean | Date | number | string | {
    [prop: string]: JSON | JSON[];
};
export type JSONCompatible = {
    [prop: string]: JSON | JSON[];
};

[asmyshlyaev177]

Hi, it were some troubles with undefined, I can't recall all details, some problems with types as well.
Would be good to elaborate about headaches you have with it, maybe can improve it.

[asmyshlyaev177]

@marcusds Can you give me a simple example to understand the issue?