1/** 2 * @param obj The object to inspect. 3 * @returns True if the argument appears to be a plain object. 4 */ 5export default function isPlainObject(obj: any): boolean { 6 if (typeof obj !== 'object' || obj === null) return false 7 8 let proto = obj 9 while (Object.getPrototypeOf(proto) !== null) { 10 proto = Object.getPrototypeOf(proto) 11 } 12 13 return Object.getPrototypeOf(obj) === proto 14} 15