Gulp task with gulp -run-command is not working properly

Question

Gulp task with gulp -run-command is not working properly

I am trying to start json-server in the gulp task and I am checking if the server is running with the portInUse function. Like this:

var gulputil = require('gulp-util')
var run = require('gulp-run-command').default
var gulp = require('gulp')


const args = [
    'json-server --watch .\\src\\main\\app\\reactjs\\api\\db.json --port 3005'
]

var net = require('net');

var portInUse = function(port, callback) {
    var server = net.createServer(function(socket) {
    socket.write('Echo server\r\n');
    socket.pipe(socket);
    });

    server.listen(port, '127.0.0.1');
    server.on('error', function (e) {
    callback(true);
    });
    server.on('listening', function (e) {
    server.close();
    callback(false);
    });
};

gulp.task("initLocalJsonServer", function() {
    portInUse(3005, function(returnValue) {
        gulputil.log('1 ' + returnValue);
    });

        run(args);

    portInUse(3005, function(returnValue) {
        gulputil.log('2 ' + returnValue);
    });
});

This command, which is the args value here, works as intended when I run it on the command line, so there is nothing wrong with the command or the json server itself. If I run it, I will see json-serverinlocalhost:3005

Now the output from the portInUse function indicates that the server is starting, since the output: