myprojplanet_vite/src/views/login/signup/signup.ts

import { computed, defineComponent, ref, watch } from 'vue'
import { CSignUp } from '../../../components/CSignUp'
import { useQuasar } from 'quasar'
import { useI18n } from '@/boot/i18n'
import { useUserStore } from '@store/UserStore'
import { useRoute } from 'vue-router'

export default defineComponent({
  name: 'SignUp',
  components: { CSignUp },
  props: {},
  setup() {
    const $route = useRoute()

    const adult = ref(false)
    const invited = computed(() => $route.params.invited)

    // @ts-ignore
    watch(invited, (newval, oldval) => {
      console.log('$route.params.invited')
      adult.value = !!$route.params.invited
    })

    return {}
  },
})