p5.js-web-editor/client/utils/metaKey.js

const metaKey = (() => {
  if (navigator != null && navigator.platform != null) {
    return /^MAC/i.test(navigator.platform) ?
      'Cmd' :
      'Ctrl';
  }

  return 'Ctrl';
})();

const metaKeyName = metaKey === 'Cmd' ? '\u2318' : 'Ctrl';

export {
  metaKey,
  metaKeyName,
};