/**
 * This is a workaround helper to allow the usage of 'unknown' in
 * a type-guard function while checking that keys exist.
 *
 * @see https://github.com/microsoft/TypeScript/issues/21732
 * @see https://stackoverflow.com/a/58630274
 */
export function hasKey<K extends string, T>(
  k: K,
  o: T
): o is T & Record<K, unknown> {
  return typeof o === 'object' && k in o;
}