33763-hard-union-to-object-from-key - TypeScript Online Challenges

Test cases from: type-challenges/33763-hard-union-to-object-from-key/test-cases.ts

import type { Equal, Expect } from '@type-challenges/utils'

type Foo = {
  foo: string
  common: boolean
}

type Bar = {
  bar: number
  common: boolean
}

type Other = {
  other: string
}

type cases = [
  Expect<Equal<UnionToObjectFromKey<Foo | Bar, 'foo'>, Foo>>,
  Expect<Equal<UnionToObjectFromKey<Foo | Bar, 'common'>, {
    foo: string
    common: boolean
  } | {
    bar: number
    common: boolean
  }>>,
  Expect<Equal<UnionToObjectFromKey<Foo | Bar | Other, 'common'>, {
    foo: string
    common: boolean
  } | {
    bar: number
    common: boolean
  }>>,
]

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