How to use the bootstrap function in bootstrap

import Vue from 'vue'
import Quasar from 'quasar-framework'
import bootstrap from 'bootstrap'

Vue.use(Quasar)

if (__THEME === 'mat') {
  require('quasar-extras/roboto-font')
}
import 'quasar-extras/material-icons'

const base = {
  el: '#q-app',
  render: h => h(require('./root.vue').default)
}
const options = Object.assign({}, base, bootstrap(Vue))

const dev = process.env.DEV

console.warn('~> process.env.DEV', dev)

Vue.config.productionTip = !dev
Vue.config.silent = !dev
Vue.config.devtools = dev
Vue.config.productionTip = dev

Quasar.start(() => {
  /* eslint-disable no-new */
  new Vue(options)
})

componentWillMount() {
    const { fontOpts, colorOpts } = this.props;

    // Idempotent bootstrapping by caching initialization state in a global key
    if (!window.__REACT_ELEMENTAL_BOOTSTRAPPED__) {
      bootstrap(fontOpts, colorOpts);

      window.__REACT_ELEMENTAL_BOOTSTRAPPED__ = true;
    }
  }

ch.error(msg);
            res.setHeader("Content-Type", "text/html");
            res.end(msg);
          } else {
            ch.error(
              `Rendering fallback failed to render inn server-developmet.js`
            );
            res.setHeader("Content-Type", "text/html");
            res.end(exceptionRenderer(error));
          }
        }
      };

      const promises = [];
      const cookie = new CookieHelper(req, res);
      promises.push(manifoldBootstrap(store.getState, store.dispatch, cookie));
      Promise.all(promises).then(render, render);
    }
  });