使用Node.js实现遍历文件夹下所有文件

const fs = require('fs')
const path = require('path')

function traverseFolder(folderPath) {
  // ...
}

function traverseFolder(folderPath) {
  // 读取文件夹列表
  const files = fs.readdirSync(folderPath)
  // 遍历文件夹列表
  files.forEach(function (fileName) {
    // 拼接当前文件路径
    const filePath = path.join(folderPath, fileName)
    // 判断该路径是文件夹还是文件
    const stats = fs.statSync(filePath)
    if (stats.isDirectory()) {
      // 如果是文件夹，递归遍历
      traverseFolder(filePath)
    } else {
      // 如果是文件，执行操作
      console.log(filePath)
    }
  })
}

const fs = require('fs')
const path = require('path')
function findTextFiles(folderPath) {
  const result = []
  function traverseFolder(folderPath) {
    const files = fs.readdirSync(folderPath)
    files.forEach(function (fileName) {
      const filePath = path.join(folderPath, fileName)
      const stats = fs.statSync(filePath)
      if (stats.isDirectory()) {
        traverseFolder(filePath)
      } else {
        if (path.extname(fileName) === '.txt') {
          result.push(filePath)
        }
      }
    })
  }
  traverseFolder(folderPath)

const fs = require('fs')
const path = require('path')
function findFirstTextFile(folderPath) {
  let result = null
  function traverseFolder(folderPath) {
    const files = fs.readdirSync(folderPath)
    files.forEach(function (fileName) {
      const filePath = path.join(folderPath, fileName)
      const stats = fs.statSync(filePath)
      if (stats.isDirectory()) {
        traverseFolder(filePath)
      } else {
        if (path.extname(fileName) === '.txt' && !result) {
          result = filePath
        }
      }
    })
  }
  traverseFolder(folderPath)
  return result
}