ReadonlyKeys

Category

Get Object Keys

Get union type of keys that are readonly in object type T.

Usage

import type { ReadonlyKeys } from '@utype/core'

type Prop = {
  readonly name: string;
  readonly age: number;
  visible: boolean;
}

// Expect: 'name' | 'age'
type ReadonlyKeysProp = ReadonlyKeys<Prop>