Addenda: The .mjs extension


无法使用 require() 扩展名为 .mjs 的文件。 尝试这样做会抛出错误.mjs 扩展名是为无法通过 require() 加载的 ECMAScript 模块保留的。 有关更多详细信息,请参阅 ECMAScript 模块

It is not possible to require() files that have the .mjs extension. Attempting to do so will throw an error. The .mjs extension is reserved for ECMAScript Modules which cannot be loaded via require(). See ECMAScript Modules for more details.