String literal union

bigboyjo · 2026-03-11T20:46:38.841Z

Is there a way to achieve this? ```ts type Columns = 'name' | 'id' type Negated = Columns | `-${Columns}` ``` I tried doing: `type('("name" | "id") | ("-" & ("name" | "id"))')` but this just results in `'name' | 'id'` And this `type('("-" & ("name" | "id"))')` results in `never`

Is there a way to achieve this?

type Columns = 'name' | 'id'
type Negated = Columns | `-${Columns}`

type Columns = 'name' | 'id'
type Negated = Columns | `-${Columns}`

I tried doing:

type('("name" | "id") | ("-" & ("name" | "id"))')

type('("name" | "id") | ("-" & ("name" | "id"))')

but this just results in

'name' | 'id'

'name' | 'id'

And this

type('("-" & ("name" | "id"))')

type('("-" & ("name" | "id"))')

results in

never

never

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