launch.js

const { spawn, execSync } = require('child_process');
const fs = require('fs');
const path = require('path');
const electronPath = require('electron');
const env = { ...process.env };
delete env.ELECTRON_RUN_AS_NODE;
const pidFile = path.join(__dirname, '.trim-dev.pid');

// Kill any existing instance (entire process tree) before launching
try {
  const raw = fs.readFileSync(pidFile, 'utf-8').trim();
  const oldPid = Number(raw);
  if (Number.isFinite(oldPid) && oldPid > 0) {
    if (process.platform === 'win32') {
      try { execSync(`taskkill /F /T /PID ${oldPid}`, { stdio: 'ignore' }); } catch {}
    } else {
      try { process.kill(-oldPid, 'SIGKILL'); } catch {
        try { process.kill(oldPid, 'SIGKILL'); } catch {}
      };
    }
  }
} catch {}
try { fs.unlinkSync(pidFile); } catch {}

const child = spawn(electronPath, ['.'], {
  cwd: __dirname,
  env,
  stdio: 'ignore',
  detached: true,
});

try {
  fs.writeFileSync(pidFile, String(child.pid), 'utf-8');
} catch {}

child.unref();
process.exit(0);