Enums should support an omit method

Example of what has to be done right now:

const a = z.nativeEnum( { a: 1, b: 2 } as const )
const b = z.nativeEnum( Remeda.omit( a._def.values, [ 'a' ] ) )

b._def.values.b // works
b._def.values.a
//            ^
// Property 'a' does not exist on type 'Omit<{ readonly a: 1; readonly b: 2; }, "a">'.

I’m not sure how to do it with zod enums actually.

This issue would be asking for native and zod enums though to support an omit method.

[JacobWeisenburger]

Here’s how you do it with zod enums

const foo = z.enum( [ 'a', 'b' ] )

type ExcludeA = Exclude<z.infer<typeof foo>, 'a'>
// type ExcludeA = "b"

const bar = z.enum(
    foo.options.filter( x => x !== 'a' ) as [ ExcludeA, ...ExcludeA[] ]
)

bar.enum.b // works
bar.enum.a
//       ^
// Property 'a' does not exist on type 'Values<["b", ..."b"[]]>'.

[colinhacks]

you’re omitting by value?

The inferred type of this this enum is 1 | 2 so you’d omit a literal 2 to remove that option.

const a = z.nativeEnum( { a: 1, b: 2 } as const )
// 1 | 2

You could also do this:

const a = z.nativeEnum({ a: 1, b: 2 } as const);
const omitted = z.omit(a, z.literal(a.values.b));

AND method helpers too?

Yep that’s what I mean by “add the .omit method on the base ZodType”. This would add the .omit method to all Zod schemas.