Refactor from dirname/filename(.test).js to dirname/filename/index(.test).js

refactor.js

/*

node refactor.js --dirs src/actions src/components

Before :
- src
  - actions
    messenger.js
    messenger.test.js
    login.js
    login.test.js
    index.js
    index.test.js
  - components
    messenger.js
    messenger.test.js
    login.js
    login.test.js

After :
- src
  - actions
    - messenger
      index.js
      index.test.js
    - login
      index.js
      index.test.js
    index.js
    index.test.js
  - components
    - messenger
      index.js
      index.test.js
    - login
      index.js
      index.test.js
*/

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

const { dirs } = require('yargs').array('dirs').argv;

dirs.forEach(dir => {
  const filenames = fs.readdirSync(dir);
  filenames.forEach(filename => {
    if (filename.includes('index')) {
      return;
    }
    const [dirname, ...rest] = filename.split('.');
    const outputDir = path.join(dir, dirname);
    const oldPath = path.join(dir, filename);
    const newPath = path.join(outputDir, `index.${rest.join('.')}`);
    try {
      fs.accessSync(outputDir);
    } catch (_) {
      fs.mkdirSync(outputDir);
    }
    fs.renameSync(oldPath, newPath);
  });
});