Function isImmutableUnorderedSet

packages/expect/src/jest-utils.ts:384–390

(maybeSet: any)

}

export function isImmutableUnorderedSet(maybeSet: any): boolean {
  return !!(
    maybeSet
    && maybeSet[IS_SET_SENTINEL]
    && !maybeSet[IS_ORDERED_SENTINEL]
  )
}

function isObjectLiteral(source: unknown): source is Record<string, unknown> {
  return source != null && typeof source === 'object' && !Array.isArray(source)