result.xq

declare function local:result($id){
try{
  map{ "result":async:result($id)
  }
} catch * {
   map{ "error": map {
          'code': $err:code,
          'description': $err:description,
          'module': $err:module,
          'line': $err:line-number,
          'column': $err:column-number,
          'value': $err:value
  }
 } 
}
};
async:ids()=>head()=>local:result()