JSFiddle - React, Tailwind, and code Playground

JavaScript

var damnVariable = null;
function someFunction(_) {
	var start = "some value";
	var end = "some value";
    var someObject = {
        display: function(param, clb) {
            clb();
        }
    };
    var param = 10;
	someObject.display(param, function(result, status) {
		if (status == true) {
			secondObject.setDirections(result);
            damnVariable = 23;
        } else {
          damnVariable = 45;
        }
        
        _();
	});
    
}

function test() {
    someFunction(function() {
	  console.log(damnVariable);
    });
}
test();