1  /**
 2   * Determine if {@linkcode arg} is a Plain Old JavaScript Object.
 3   *
 4   * @see https://masteringjs.io/tutorials/fundamentals/pojo
 5   *
 6   * @param arg to test
 7   * @returns true if {@linkcode arg} is a POJO
 8   */
 9  export function isPOJO(arg: unknown): arg is Record<string, unknown> {
10      if (!arg || typeof arg !== 'object') {
11          return false;
12      }
13  
14      const proto = Object.getPrototypeOf(arg);
15      if (!proto) {
16          return true; // `Object.create(null)`
17      }
18  
19      return proto === Object.prototype;
20  }