XMLHttpRequest = function() {
            this.onreadystatechange = function() { };
            this.readyState = 0;
            this.response = null;
            this.responseText = null;
            this.responseType = "blob";
            this.responseURL = null;
            this.responseXML = null;
            this.status = 0;
            this.statusText = "";
            this._loadcallbacks = [];
            this._errorcallbacks = [];
            this.onload = function(e) {

            }

            this.onerror = function(e) {

            }

            this.onprogress = function(e) {

            }

            this.abort = function() {
                this._aborted = true;
            };

            this.addEventListener = function(event, callback) {
                if(event === "load") {
                    this._loadcallbacks.push(callback);
                } else if(event == "error") {
                    this._errorcallbacks.push(callback);
                }
            };

            this.getAllResponseHeaders = function() {
                return null;
            };

            this.open = function (method, url, async, user, password) {
                this._method = method;
                this._url = url;
                this._user = user;
                this._password = password;
            };

            this.overrideMimeType = function(mime_type) {
                this._overrideMime = mime_type;
            };

            this.send = function() {
                if(!this._url) {
                    return;
                }

                let this_ref = this;
                requester.request(this._url).then(function(http) {
                    this_ref.readyState = 1;
                    this_ref.onreadystatechange();
                    this_ref.readyState = 2;
                    this_ref.onreadystatechange();
                    this_ref.readyState = 3;
                    this_ref.onreadystatechange();

                    this_ref.response = http.response;
                    this_ref.responseText = http.responseText;
                    this_ref.responseURL = this_ref._url;
                    this_ref.status = http.status;
                    this_ref.statusText = http.statusText;

                    let is_xml = false;
                    if(this_ref._overrideMime) {
                        if(this_ref._overrideMime === "application/xml" || this_ref._overrideMime == "text/xml") {
                            is_xml = true;
                        }
                    } else {
                        let headers = http.getAllResponseHeaders().toLowerCase();

                        if(headers.includes("content-type: application/xml") || headers.includes("content-type: text/xml")) {
                            is_xml = true;
                        }
                    }

                    if(is_xml) {
                        parser = new DOMParser();
                        this_ref.responseXML = parser.parseFromString(this_ref.responseText, "text/xml");
                    }

                    this_ref.readyState = 4;
                    this_ref.onreadystatechange();

                    this_ref.onload(http);
                    for(callback of this_ref._loadcallbacks) {
                        callback.call(this_ref, http);
                    }
                }, function(exception) {

                    this_ref.onerror(exception);
                    for(callback of this_ref._errorcallbacks) {
                        callback.call(this_ref, exception);
                    }
                });
            };
        };

        XMLHttpRequest.prototype = {
            'UNSENT': 0,
            'OPENED': 1,
            'HEADERS_RECIEVED': 2,
            'LOADING': 3,
            'DONE': 4,
        };