[BUG] Class constructor Rule cannot be invoked without 'new'" about laraform HOT 1 CLOSED

// resources/js/rules/Uppercase.js

import Rule from '@laraform/laraform/src/utils/validation/rules/rule'

export default class Uppercase extends Rule {
  get message() {
    return 'The :attribute should only contain uppercase letters'
  }

  get async() {
    return true
  }

  async validate(value) {
    var response = await axios.get('/uppercase?value=' + value)

    return response.data.valid
  }
}

// resources/js/app.js

import Laraform from '@laraform/laraform/src'
import Uppercase from './rules/Uppercase'

Laraform.rule('uppercase', Uppercase)

Vue.use(Laraform)

const app = new Vue({
  el: '#app',
})