Why is node.js missing a function?

Question

Node.js

This code returns the necessary information to the browser, but it takes a long time - 2-4 seconds.

var rp = require('request-promise');
var i = '91.105.236.7';

app.get('/', function(req, res){
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
var options = {
    uri: 'http://api.ipapi.com/' + i,
    qs: {
        access_key: '98eeeb1c1233456743840f9195d' // -> uri + '?access_token=xxxxx%20xxxxx'
    }
};
 
rp(options)
    .then(function (repos) {
    	console.log(repos);
    	res.send(repos);
    })
    .catch(function (err) {
        // API call failed...
    });
});

And such code returns emptiness to the browser, but after a while the desired answer is displayed in the console. The browser responds quickly, usually in less than a second.

var rp = require('request-promise');
var i = '91.105.236.7';
var geo = geoIP(i);

app.get('/', function(req, res){
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");

  res.send(geo);
});
function geoIP(i){
var options = {
    uri: 'http://api.ipapi.com/' + i,
    qs: {
        access_key: '98eeeb1c73191023211233121233840f9195d' // -> uri + '?access_token=xxxxx%20xxxxx'
    }
};
 
rp(options)
    .then(function (repos) {
    	console.log(repos);
        return repos
    })
    .catch(function (err) {
        // API call failed...
    });
}

The code with this function call also does not work correctly:

app.get('/', function(req, res){
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
var geo = geoIP(i);
  res.send(geo);
});

I suspect that the function simply does not have time to be processed, because there is a call to the api of a third-party site. Is this related to how node.js works? (new to node.js)

Answer 1

so your geoIP function does not return anything, and the output to the console does not depend on the request at all