How to use the survey-react.StylesManager function in survey-react

import "select2/dist/css/select2.css";
import "bootstrap-slider/dist/css/bootstrap-slider.css";

import "jquery-bar-rating/dist/themes/css-stars.css";

import $ from "jquery";
import "jquery-ui/ui/widgets/datepicker.js";
import "select2/dist/js/select2.js";
import "jquery-bar-rating";


import "icheck/skins/square/blue.css";

window["$"] = window["jQuery"] = $;

SurveyJS.StylesManager.applyTheme("default");

const mapStateToProps = ({session, survey}) => ({
  session,
  survey
});

const mapDispatchToProps = dispatch => ({
  logout: () => dispatch(logout()),
  getSurvey: (surveyId) => dispatch(getSurvey(surveyId))
});

class Survey extends Component {


  componentDidMount() {
    const {surveyId} = this.props.match.params;

import "select2/dist/js/select2.js";
import "jquery-bar-rating";

import * as SurveyCore from "survey-core";
import * as SurveyPDF from "survey-pdf";
import * as widgets from "surveyjs-widgets";

import "pretty-checkbox/dist/pretty-checkbox.css";
//import "icheck/skins/square/blue.css";
window["$"] = window["jQuery"] = $;
//require("icheck");

export { MyQuestion } from "./MyQuestion";


Survey.StylesManager.applyTheme("default");

//widgets.icheck(Survey, $);
widgets.prettycheckbox(Survey);
//widgets.select2(Survey, $);
widgets.inputmask(Survey);
widgets.jquerybarrating(Survey, $);
widgets.jqueryuidatepicker(Survey, $);
widgets.nouislider(Survey);
widgets.select2tagbox(Survey, $);
widgets.signaturepad(Survey);
widgets.sortablejs(Survey);
widgets.ckeditor(Survey);
widgets.autocomplete(Survey, $);
widgets.bootstrapslider(Survey);

//widgets.icheck(SurveyCore, $);