message: overrided condole.error and console.warn for f-f tests
diff: @@ -5,6 +5,10 @@ export const url_test = "http://127.0.0.1:8080/examples_test/";
  export const url_widgets = "http://127.0.0.1:8080/examples/";
  export const initSurvey = ClientFunction((framework, json, events) => {
  + console.error = msg => {throw new Error(msg)};
  + console.warn = msg => {throw new Error(msg)};
  + console.log("surveyjs console.error and console.warn override");
  +
  var model = new Survey.Model(json);
  var surveyComplete = function (model) {
  window.SurveyResult = model.data;
  