Function isKeyedCollection

assert/equal.ts:5–7

(x: unknown)

type KeyedCollection = Set<unknown> | Map<unknown, unknown>;
function isKeyedCollection(x: unknown): x is KeyedCollection {
  return x instanceof Set || x instanceof Map;
}

function prototypesEqual(a: object, b: object) {
  const pa = Object.getPrototypeOf(a);