node.js - 从模块调用的nodejs

Question

如何判断 require 正在调用用 Node 编写的脚本？

Answer 1

来自node docs :

Accessing the main module

When a file is run directly from Node, require.main is set to its module. That means that you can determine whether a file has been run directly by testing

 require.main === module

For a file foo.js, this will be true if run via node foo.js, but false if run by require('./foo').

Because module provides a filename property (normally equivalent to __filename), the entry point of the current application can be obtained by checking require.main.filename.