I have a simple problem which wish someone can shed some light on. After I call an external api returning JSON object. I cannot pass the response outside the callback function. and It returns undefined.

let params = {
   key: "value"
  };

function callback (data) {
    return data
}

//calling the external api which return json object
search.json(params, callback);

no matter how i try to store the data it returns undefined except inside the call back function.

my problem is how can i pass the data to a global scope or access the response after i calling the function though import module.

thanks