/** Used for built-in method references. */ const objectProto = Object.prototype; /** * Checks if `value` is likely a prototype object. * * @private * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. */ function isPrototype(value) { const Ctor = value && value.constructor; const proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto; return value === proto; } export default isPrototype;