process.env

与环境变量交互的基本 API 是 process.env，它由一个预先填充了用户环境变量的对象组成，这些变量可以修改和扩展。

¥The basic API for interacting with environment variables is process.env, it consists of an object with pre-populated user environment variables that can be modified and expanded.

更多详细信息，请参阅 process.env 文档。

¥For more details refer to the process.env documentation.