const getType = (value) => (Object.prototype.toString.call(value).slice(8, -1).toLowerCase()); function isPlainObject(value) { if (getType(value) !== "object") { return false; } const pp = Object.getPrototypeOf(value); if (pp === null || pp === undefined) { return true; } const Ctor = pp.constructor && pp.constructor.toString(); return Ctor === Object.toString(); } export default isPlainObject;