Try to open previous browser tab in mac chrome

open-in-tap.js

 if (process.platform === 'darwin') {
    try {
      // Try our best to reuse existing tab
      // on OS X Google Chrome with AppleScript
      execSync('ps cax | grep "Google Chrome"');
      execSync(
        'osascript chrome.applescript ' + protocol + '://localhost:' + port + '/',
        {cwd: path.join(__dirname, 'utils'), stdio: 'ignore'}
      );
      return;
    } catch (err) {
      // Ignore errors.
    }
  }
  // Fallback to opn
  // (It will always open new tab)
  opn(protocol + '://localhost:' + port + '/');