I am using drawflow npm library in my Vuejs/Nuxtjs application but when I start the application I get the following error in my console:

classCallCheck.js:3 Uncaught TypeError: Cannot call a class as a function
    at _classCallCheck (classCallCheck.js:3)

Following are the steps I have followed as per documentation:

1. Install the drawflow using npm i drawflow --save
2. Create a drawflow.js file under plugins folder and add the code:

import Vue from 'vue'
import Drwaflow from 'drawflow'
Vue.use(Drwaflow)

3. Modify the nuxt-config.js file and add the plugin and build:

plugins: [
    { src: "~/plugins/drawflow", mode:"client" }
  ],

  build: {
    transpile: ["drawflow"]
  },

4. My Vue Component has following in Mounted function:

  async mounted () {
    const vm = this

    if (process.browser) {
      const Drawflow = await require('drawflow')
      // const styleDrawflow = await require('drawflow/dist/drawflow.min.css')
      Vue.use(Drawflow)

      const id = document.getElementById('drawflow')
      console.log(id)
      vm.editor = new Drawflow(id, Vue, vm)
      vm.editor.start()
    }
  }

Not understand what's wrong here. Could not find any relevant post for Nuxt. Can someone please explain what's wrong with this code?