PerformanceNodeTiming extends PerformanceEntry 类

此属性是 Node.js 的扩展。 它在 Web 浏览器中不可用。

为 Node.js 本身提供计时细节。 此类的构造函数不会暴露给用户。

This property is an extension by Node.js. It is not available in Web browsers.

Provides timing details for Node.js itself. The constructor of this class is not exposed to users.