Node script that reads the vue SFC files of all the tree of a directory and reorders their script, template and style tags

orderScriptAndTemplateTagsInSFC.js

// execute it with command "node orderScriptAndTemplateTagsInSFC.js [ <dir> ]"
const fs = require('fs');

function orderScriptAndTemplateTagsInSFC() {
  // 1. Read files / directories of path given to the script through parameter and create an array.
  const directory = process.argv[2] || __dirname;
  const paths = fs.readdirSync(directory)
    .filter(filepath => !filepath.match(/^\./)); // remove hidden files or folders

  const isVue = filepath => /.*\.vue$/.test(filepath);
  const isDir = filepath => fs.statSync(filepath).isDirectory();
  const templateTag = string => string.match(/<template.*<\/template>/sg);
  const scriptTag = string => string.match(/<script.*<\/script>/sg);
  const styleTag = string => string.match(/<style.*<\/style>/sg);

  // 4. Arrange <script> and <template> in file, allocate <script>  in the beginning of file, then <template>, then the <style>
  const allocateScriptFirst = (filepath) => {
    fs.readFile(filepath, 'utf8', (err, vueFile) => {
      if (err) {
        console.info(err);
      }

      const templatePart = templateTag(vueFile) || [];
      const scriptPart = scriptTag(vueFile) || [];
      const stylePart = styleTag(vueFile) || [];

      // adding correct formatting for linter
      const reorderedVueFile = `${scriptPart.concat(templatePart, stylePart).join('\n\n')}\n`;
      fs.writeFile(filepath, reorderedVueFile, 'utf8', (error) => {
        if (error) return console.info(error);
        return 'done';
      });
    });
  };
  const shufflePaths = (iterator, currentPath) => {
    // 2. if Array has no length, we finished, otherwise, get the first filepath by Array.shift method and shuffle depending on file type
    if (!(iterator && iterator.length)) return;
    const item = iterator.shift();
    const filepath = `${currentPath}/${item}`;
    if (isDir(filepath)) { // 3. isFolder ? goToStep1 : goToStep3
      shufflePaths(fs.readdirSync(`${filepath}/`), filepath);
    } else if (isVue(item)) { // 3. isVue ? goToStep4 : goToStep2
      allocateScriptFirst(filepath);
    }
    shufflePaths(iterator, currentPath);
  };
  // initiate recursive function
  shufflePaths(paths, `${directory}`);
}

orderScriptAndTemplateTagsInSFC();