<template>
   <div id="boum">
      <div>hello <b>{{ username }}</b></div>
      <div><b>{{ age }}</b> ans</div>
      <input v-model="username">
   </div>
</template>

<script>
export default {
   name: 'app',
   props: ['dataset'],
   data() {
      return {
         user: this.dataset.user,
         username: this.dataset.user.username,
         age: this.dataset.user.age,
      }
   }
}
</script>
