I just picked up screeps and im having some problems when using webstorm. Im not the most advance developer so i might be setting it up wrong.

Below is my main.js code file, what I am having problems with is;

* i get an error under the word require saying that it is an unresolved function or method
* i get an error under the word method saying unresolved variable or type
* let are not supported by the current java version

my code works ingame as of now so i know there is nothing wrong with it. Does anyone know what could be happening in the IDE? Ive followed thPionGaming youtube tutorials in setting everything up.

```javascript

var roleHarvester = require('role.Harvester');
var roleUpgrader = require('role.Upgrader');
var roleBuilder = require('role.Builder');

var buildingTower = require('building.Tower');

var creepSpawn = require('creep.Spawner');

module.exports.loop = function () {
    // Spawns creeps if needed
    creepSpawn.run();

    // Tower logic
    buildingTower.run();
    
    // Makes sure memory is clear of dead creeps
    for(let name in Memory.creeps) {
        if(!Game.creeps[name]) {
            delete Memory.creeps[name];
            console.log('Clearing non-existing creep memory:', name);
        }
    }

    // Letting the creeps do their jobs
    for(var name in Game.creeps) {
        var creep = Game.creeps[name];
        
        if(creep.memory.role == 'harvester') {
            roleHarvester.run(creep);
        }

        else if(creep.memory.role == 'upgrader') {
            roleUpgrader.run(creep);
        }
        
        else if(creep.memory.role == 'builder') {
            roleBuilder.run(creep);
        }
    }
}

```