你可以使用 fs.readdir 或 fs.readdirSync 方法。

You can use the fs.readdir or fs.readdirSync methods.

fs.readdir

const testFolder = './tests/';
const fs = require('fs');

fs.readdir(testFolder, (err, files) => {
  files.forEach(file => {
    console.log(file);
  });
})

fs.readdirSync

const testFolder = './tests/';
const fs = require('fs');

fs.readdirSync(testFolder).forEach(file => {
  console.log(file);
})

两种方法的区别在于第一种方法是异步的，所以你必须提供一个在读取过程结束时执行的回调函数。

The difference between the two methods, is that the first one is asynchronous, so you have to provide a callback function that will be executed when the read process ends.

第二个是同步的，它将返回文件名数组，但它将停止进一步执行代码，直到读取过程结束。

The second is synchronous, it will return the file name array, but it will stop any further execution of your code until the read process ends.