code: function parseJSON(body, callback) {
    let r = null;
    let err = null;
  
    try {
      if (typeof body === 'string') {
        r = JSON.parse(body);
      } else {
        r = body;
      }
    } catch(e) {
      err = e;
    }
  
    return callback(err, r);
  }
docs: /*
  Wrap JSON.parse in a callback