Vue2.js：TypeScript 支持Prop属性类型标注

export interface IUser {
  id: number,
  name: number,
  age: string,
}

<template>
</template>
<script lang="ts">
import Vue from 'vue'
import type { PropType } from 'vue'
import type { IUser } from '@/entiry/IUser'
// 告诉 TypeScript 这是 Vue 组件
export default Vue.extend({
  props: {
    user: {
      type: Object as PropType<IUser>,
      required: true
    }
  }
})
</script>
<style>
</style>