How can I use the value of the body outside this method? - node.js

Question

var request = require('request');
var boardsCall = {
method: 'GET',
url: 'https://api.trello.com/1/organizations/xxxxxxxxxx/boards?filter=open&fields=id,name',
qs: {
key: 'xxxxxxxxxxxxxxxx',
token: 'xxxxxxxxxxxxxxxxxxxxxxxxx'
}
};
function test(url, callback) {
request(url, function(error, response, body) {
if (error) {
return callback(error);
}
callback(null, JSON.parse(body));
})
}
const x = test(boardsCall, function(err, body) {
if (err) {
console.log(err);
}
else {
return body;
}
})
console.log(x);
how can I use the value of the body outside?
to use it in other methods later
I am open to any changes best practices, I read a lot and got a bit confused on the topic of callbacks, promises async await.

Answer 1

In my approach request is wrapped with Promise, test function returns Promise response. Inside the main method test function will be executed synchronously. Once the response value assigned to x do remaining processing logic inside the main() method.
var request = require('request');
var boardsCall = {
method: 'GET',
url: 'https://api.trello.com/1/organizations/xxxxxxxxxx/boards?filter=open&fields=id,name',
qs: {
key: 'xxxxxxxxxxxxxxxx',
token: 'xxxxxxxxxxxxxxxxxxxxxxxxx'
}
};
function test(url) {
//Wrapping request callback with Promise
return new Promise((res, rej)=> {
request(url, function(error, response, body) {
if (error) {
rej(error);
}
res(JSON.parse(body));
})
})
}
async function main() {
try {
const x = await test(boardsCall);
console.log("Result : ", x );
// Remaining logic to process based on x value
} catch(e) {
console.error("Error :", e);
}
}
//Calling main method
main()