TS helpers

getOwn_values_and_keys.ts

enum Types {
    Start = 'start',
    End = 'end',
    Hello = 'hello'
};

const freezed = Object.freeze({
    Start: 'start' as const,
    End: 'end' as const,
    Hello = 'hello' as const
});

function ownKeys<
  T extends object, //{[k: string]: string},
  K extends keyof T
>(obj: T): K[] {
  return Object.getOwnPropertyNames(obj) as any;
}

function ownValues<
  T extends object, //{[k: string]: string},
  K extends keyof T,
>(obj: T): T[K][] {
    const keys = ownKeys(obj);
    return keys.map(key => obj[key]) as any;
}

const own = Object.getOwnPropertyNames(freezed);
const ownP = ownKeys(freezed);
const ownV = ownValues(freezed);

const ownEnum = Object.getOwnPropertyNames(Types);
const ownEnumP = ownKeys(Types);
const ownEnumV = ownValues(Types);