Monkey patch XMLHttpRequest

Monkey patch XMLHttpRequest.

 const xhrLogs: any[] = [];

monkeyPatchXMLHttpRequest(xhrLogs);

function monkeyPatchXMLHttpRequest (xhrLogs: any[]): void {

    const open: any = XMLHttpRequest.prototype.open;

    XMLHttpRequest.prototype.open = function (method: string, url: string, async?: boolean, username?: string, password?: string): void {

        xhrLogs.push({method: method, requestURL: url});

        open.apply(this, arguments);

    };

   const send: any = XMLHttpRequest.prototype.send;

    XMLHttpRequest.prototype.send = function (data): void {

        const logIndex: number = xhrLogs.length - 1;

        xhrLogs[logIndex].date = new Date();

        xhrLogs[logIndex].data = data;

        const self: any = this;

        const onreadystatechange: any = self.onreadystatechange;

        if (onreadystatechange) {

            self.onreadystatechange = function () {

                xhrLogs[logIndex].readyState = self.readyState;

                if (self.readyState === 4) {

                    xhrLogs[logIndex].url = self.responseURL;

                    xhrLogs[logIndex].readyState = 4;

                    xhrLogs[logIndex].responseHeaders = self.getAllResponseHeaders();

                    xhrLogs[logIndex].status = self.status;

                    xhrLogs[logIndex].statusText = self.statusText;

                    xhrLogs[logIndex].responseText = self.responseText.indexOf('PNG') !== -1 ? 'Картинка PNG' : self.responseText;

                }

                onreadystatechange.apply(self, arguments);

            }

        }

        send.apply(self, arguments);

    };

}