用 node写了一段脚本 重构代码, 整理一下头部的 import 以及单例的初始化

refactor.js

import * as fs from 'fs';
import * as path from 'path';

// app 目录
const appFolder = path.resolve(__dirname, '../app');
console.log(appFolder);

// sync version
function walkSync(currentDirPath, callback) {
  fs.readdirSync(currentDirPath).forEach(function (name, index) {
    var filePath = path.join(currentDirPath, name);
    var stat = fs.statSync(filePath);
    if (stat.isFile()) {
      callback(filePath, stat);
    } else if (stat.isDirectory()) {
      walkSync(filePath, callback);
    }
  });
}

function readSync(filePath,callback){
  let data = fs.readFileSync(filePath, 'utf8');
  let lines = data.split("\n");
  let filterIndex = 0, insertIndex = 0, filterIndexArr = [];
  let containsLine = lines.filter(function(line){
    let regexUser = /^import.*User.*from.*User/;
    let regexAccount = /^import.*Account.*from.*Account/;
    let regexTask = /^import.*Task.*from.*Task'/;
    let regexNetwork = /^import.*AppNetworking.*from.*AppNetworking/;
    let regexConstants = /^import.*Constants.*from.*Constants/;
    let regexUtil = /^import.*Util.*from.*Util/;
    let regexToastUtil = /^import.*ToastUtil.*from.*ToastUtil/;
    let regexInitUser = /^const.*User.*new.*User/;
    let regexInitTask = /^const.*Task.*new.*Task/;
    let regexInitAccount = /^const.*Account.*new.*Account/;
    let regexInitNetworking = /^const.*Networking.*new.*Networking/;
    let regexResult =
     !regexUser.test(line) &&
      !regexAccount.test(line) &&
      !regexTask.test(line) &&
      !regexNetwork.test(line) &&
      !regexConstants.test(line) &&
      !regexUtil.test(line) &&
      !regexToastUtil.test(line) &&
      !regexInitUser.test(line) &&
      !regexInitTask.test(line) &&
      !regexInitAccount.test(line) &&
      !regexInitNetworking.test(line);
    if(!regexResult){
      filterIndexArr.push(filterIndex);
    }
    filterIndex += 1;

    return regexResult;
  });
  insertIndex = filterIndexArr[0];
  callback(containsLine,insertIndex);
}
let filecCount = 0;

let addedLine = function(filePath,appFolder){
  let subtractStr = filePath.replace(appFolder,'');
  let level = subtractStr.split("/");
  console.log(subtractStr,'level'+level.length);
  // 第一级是level3 第二级目录 level 4
  let innerStr = '';
  for(let i = 2; i<level.length;i++){
    innerStr = innerStr + '../';
  }

  let addedLine = "import {Networking,Util,Constants,User,Task,Account,ToastUtil}  from './"
   + innerStr +"SharedInstance';";
  return addedLine;
}

walkSync(appFolder, function(filePath, stat) {
  if(filePath.endsWith('.js')){
    filecCount += 1;
    console.log("===",path.basename(filePath),filecCount);
    readSync(filePath,function(lines,insertIndex){
      let _addedLine = addedLine(filePath,appFolder);
      console.log(_addedLine);
      lines.splice(insertIndex, 0, _addedLine);


      let refactorFile = lines.join("\n");

      fs.writeFile(filePath, refactorFile, function(err) {
        if (err) { // if error, report
          console.log (err);
        }
      });
      
      lines.forEach(function(line){
        // console.log(line);
      })
    })
  }
});