module.exports对于没有键的对象如何工作？例如，如果我在test.js

const two = 2;
const three = 3;
module.exports = {two,three};    // Is the right-hand side an object? If so,where are its keys?
                                  // It doesn't look like it's object destructuring.

和app.js

const test = require("./test");
console.log(test.two);            // 2
console.log(test.three);          // 3