askirmas / react-classnaming

-this.ts ➔ k   A

import { ClassHash } from "../../src/defs";

const source = {a: "a", b: undefined}

, called = k.call(source)

//... @ts-expect-error

, key: typeof called[number] = "z"

export {key}

function k<K extends string, T extends Record<K, ClassHash>>(

  this: T

// or `K` - whatever

): (keyof T)[] {

  //@ts-expect-error

  return Object.keys(this)

}