node获取git修改文件清单

const fs = require('fs')
const path = require('path')
const exec = require('child_process').exec
const command = 'git diff --name-status HEAD~2 HEAD~3'
// 获取git改动清单
const getArrList = (str, type) => {
  const arr = str.split('\n')
  return arr.filter(item => {
    const regex = new RegExp(`[${type}].*`)
    if (regex.test(item)) {
      return item !== undefined
    }
  })
}

/**
 * @description 获取类型清单
 * @param {*} arr
 * @param {*} type M:修改，D：删除 A：新增
 * @returns
 */
const formatList = (arr, type) => {
  return arr.map(item => {
    return item.replace(/\s/g, '').replace(type, '')
  })
}
exec(command, 'utf8', (err, stdout, stderr) => {
  if (err) {
    console.log('err:', err)
    console.log('stderr:', stderr)
  } else {
    const typeList = ['M', 'D', 'A']
    const dictList = {
      'M': '修改',
      'D': '删除',
      'A': '新增'
    }
    let arr
    typeList.forEach(type => {
      arr = getArrList(stdout, type)
      arr = formatList(arr, type)
      console.log(`${dictList[type]}:`, arr)
      const options = {
        encoding: 'utf8'
      }
      const dir = path.resolve(__dirname, '../file')
      const data = `${dictList[type]}:\n` + arr.join('\n') + '\n'
      if (arr.length > 0) {
        fs.appendFile(dir + '/1.txt', data, options, (err) => {
          if (err) console.log(err)
        })
      }
    })
  }
})