ddd.js

'use strict';

const { exec, spawnSync } = require('child_process');
const path = require('path');

const home = process.env['HOME'];
if(!home) {
  console.error('home not set');
  process.exit(1);
  return;
}

const killXcode = spawnSync('killall', ['Xcode']);
const killXcodeStatus = killXcode.status;
if(killXcodeStatus !== 0) {
  const killError = killXcode.stderr.toString();
  console.log(`Failed to terminate Xcode. killall did exit with ${killXcodeStatus} - stderr: ${killError}.`);
}

const derivedData = path.join(home, 'Library', 'Developer', 'Xcode', 'DerivedData');
console.log(`Will delete ${derivedData}`);
exec(`rm -rf ${derivedData}`, (err, stdout, stderr) => { });