Function hasPropertyInObject

packages/expect-utils/src/utils.ts:32–44

(object: object, key: string | symbol)

 * Checks if `hasOwnProperty(object, key)` up the prototype chain, stopping at `Object.prototype`.
 */
const hasPropertyInObject = (object: object, key: string | symbol): boolean => {
  const shouldTerminate =
    !object || typeof object !== 'object' || object === Object.prototype;

  if (shouldTerminate) {
    return false;
  }

  return (
    Object.prototype.hasOwnProperty.call(object, key) ||
    hasPropertyInObject(Object.getPrototypeOf(object), key)
  );
};

// Retrieves an object's keys for evaluation by getObjectSubset.  This evaluates
// the prototype chain for string keys but not for non-enumerable symbols.