docs: function isBrowser(override) {
      // Enables checking a process.env key while
      // in Node.
      if (override)
          return typeof process !== 'undefined' &&
              function_1.tryWrap(to_1.toBoolean, process.env &&
                  process.env[override])(false) === true;
      // Otherwise just return NOT Node.
      return !isNode();
  }