How to use the @fortawesome/vue-fontawesome.FontAwesomeIcon.props function in @fortawesome/vue-fontawesome

import http from '@/utils/http/index'

import * as hooks from './hooks'

// font-awesome 5.x
import { library } from '@fortawesome/fontawesome-svg-core'
import { fas } from '@fortawesome/free-solid-svg-icons'
import { fab } from '@fortawesome/free-brands-svg-icons'
import { far } from '@fortawesome/free-regular-svg-icons'
import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome'

library.add(fas)
library.add(fab)
library.add(far)

FontAwesomeIcon.props.fixedWidth.default = true

Vue.component('fa-icon', FontAwesomeIcon)

Vue.use(vDialog)
Vue.use(vTableGrid, hooks.gridConfig)
Vue.use(vPage)
Vue.use(vUploader, hooks.uploaderConfig)
Vue.use(vRegion)
Vue.use(vSelectMenu, {
  // title: false
})
Vue.use(vSelectPage, {
  dataLoad: hooks.gridConfig.dataLoad,
  language: 'en'
})
// Vue.use(vTree);