Is it possible to abstract default values in the schema?

[agladysh]

Some default values in my schemas depend on low-level configuration of the library that uses the schema.

Silly example:

const $ = scope({
  foo: [ number, '=', 42 ] // May be 24, depending on the flag
}).export();

It happens rarely enough that I would hesitate to add complexity by wrapping the schema construction in a function:

(default: number = 42) => scope({
  foo: [ number, '=', default ], 
}).export();

But it happens often enough that I would like to deal with it somehow.

Something like a dictionary of variables as a second validator argument would fit my use-case nicely:

const $ = scope({
  defaultFoo: 'upvalue<number>=42',
  foo: [ number, '=', defaultFoo ],
}).export();

$.foo(data, { defaultFoo: 24 });

Is there another way to abstract default values in the schema than wrapping schema creation in a function in the current Arktype?

Is it even within the scope of the project? :)