@proem/union

@proem/union provides functions for processing union types

Usage

import union from '@proem/union'

type Label = 'a' | 'b'

const label: Label = 'a'

function labelToNumber(label: Label) {
  return union.mapLiteral(label, {
    a: () => 1,
    b: () => 2,
  })
}