number-of-file-type.js

const path = require('path');
const fs = require('fs');
let tsFiles = 0;
let jsFiles = 0;
let testFiles = 0;
let storyFiles = 0;

const listDir = (dir, fileList = []) => {
  let files = fs.readdirSync(dir);

  files.forEach(file => {
    if (fs.statSync(path.join(dir, file)).isDirectory()) {
      // console.log(`file: ${file} IS DIRECTORY`);
      fileList = listDir(path.join(dir, file), fileList);
    } else {
      // console.log(`file: ${file} IS NOT DIRECTORY`);
      if (/(\.ts|\.tsx)/.test(file)) {
        tsFiles = tsFiles + 1;
      }

      if (/(\.js|\.jsx)/.test(file)) {
        jsFiles = jsFiles + 1;
      }

      if (/(-test)/.test(file)) {
        testFiles = testFiles + 1;
      }

      if (/(\.story)/.test(file)) {
        storyFiles = storyFiles + 1;
      }
    }
  });

  return {
    jsFiles,
    tsFiles,
    total: jsFiles + tsFiles,
    testFiles,
    storyFiles,
    percentTS: tsFiles / (jsFiles + tsFiles),
  };
};

const foundFiles = listDir('./');
console.log(foundFiles);

// foundFiles.forEach(f => {
//   console.log(`Renamed: ${f.oldSrc} -> ${f.newSrc}`);
//   fs.renameSync(f.oldSrc, f.newSrc);
// });