Finds unused react components in a project

unused.js

const { execSync } = require('child_process');

const directory = 'src';

const findOut = execSync('find -L src').toString();
const filenames = findOut.trim().split('\n')
  .filter(name => name.endsWith('.js'))
  .map(name => name.replace('.js', '').replace('src/', '').replace(/\/index$/, ''));

console.log('Found', filenames.length, 'files in', directory);

const missing = [];

for (const name of filenames) {
  try {
    execSync(`grep -Ril "'${name}'" ${directory}`);
  } catch (e) {
    try {
      const localName = `/${name.split('/').pop()}`;
      execSync(`grep -Ril "${localName}';" ${directory}`);
    } catch (e) {
      missing.push(name);
      console.log('Cant find anything that uses', `'${name}'`);
    }
  }
}

console.log('total missing: ', missing.length);