详解Vue2.5+迁移至Typescript指南

{
 "compilerOptions": {
  "target": "esnext",
  "module": "esnext",
  "strict": true,
  "jsx": "preserve",
  "importHelpers": true,
  "moduleResolution": "node",
  "experimentalDecorators": true,
  "esModuleInterop": true,
  "allowSyntheticDefaultImports": true,
  "sourceMap": true,
  "baseUrl": ".",
  "noFallthroughCasesInSwitch":true,
  "noImplicitAny":true,
  "noImplicitReturns":true,
  "noImplicitThis":true,
  "types": [
   "webpack-env"
  ],
  "paths": {
   "@/*": [
    "./app/common/*"
   ],
   "_app/*": [
    "./app/*"
   ],
   "_c/*": [
    "./app/common/components/*"
   ],
   "api/*": [
    "./app/service/*"
   ],
   "assets/*": [
    "./app/assets/*"
   ]
  },
  "lib": [
   "esnext",
   "dom",
   "dom.iterable",
   "scripthost"
  ],
 },
 "include": [   // 在此出填写你的项目中需要按照typescript编译的文件路径
  "app/**/*.ts",
  "app/**/*.tsx",
  "app/**/*.d.ts",
  "app/**/*.vue",
 ],
 "exclude": [
  "node_modules"
 ]
}

import Vue from 'vue';

declare module '*.vue' {
 export default Vue;
}

//service.js
import axios from '@/libs/api.request'
export default {
  /**
   * 创建账户
   * @param {Object} data
   * @param {String} data.accountType optinal
   * @param {String} data.username
   * @param {String} data.password
   * @param {String} data.gender X | F | M
   * @param {String} data.email
   * @param {Number} data.level
   */

  createAccount(data) {
    return axios.request({
      url: `/api/account/createUser`,
      method: 'post',
      data: data
    }).then((res) => [res, null]).catch((err) => [null, err]);
  },
}

//service.d.ts
interface createAccountParams {
  accountType?: string,
  username: string,
  password: string,
  gender: 'X' | 'F' | 'M',
  email: string,
  level?: number
}
interface createAccountReturn {
  userId: string,
}
export interface Service {
  createAccount(data: createAccountParams): createAccountReturn
}

import Vue from 'vue';
import Service from "pathToService/service.d.ts";

declare module '*.vue' {
 export default Vue;
}

declare module "vue/types/vue" {
 interface Vue {
  $service: Service
 }
}

<script lang="ts">
import {Component,Vue} from "vue-property-decorator";

@Component
export default class MyComponent extends Vue{
  // 声明data
  form: {
    accountType?: string,
    username: string,
    password: string,
    gender: 'X' | 'F' | 'M',
    email: string,
    level?: number
  } = {
    username:'',
    password:'',
    gender:'X',
    email:''
  };

  // 声明methods
  async submit(): void {
    //调用上面的service接口
    const [res,err] = await this.$service.createAccount(this.form);
  }
}
</script>

export interface Vue {
 readonly $el: Element;
 readonly $options: ComponentOptions<Vue>;
 readonly $parent: Vue;
 readonly $root: Vue;
 readonly $children: Vue[];
 readonly $refs: { [key: string]: Vue | Element | Vue[] | Element[] };
 readonly $slots: { [key: string]: VNode[] | undefined };
 readonly $scopedSlots: { [key: string]: NormalizedScopedSlot | undefined };
 readonly $isServer: boolean;
 readonly $data: Record<string, any>;
 readonly $props: Record<string, any>;
 readonly $ssrContext: any;
 readonly $vnode: VNode;
 readonly $attrs: Record<string, string>;
 readonly $listeners: Record<string, Function | Function[]>;
}

import { Vue, Component, Ref } from 'vue-property-decorator'
import Form from '@/path/to/another-component.vue'
@Component
export default class YourComponent extends Vue {
 @Ref() readonly form!: Form
}

export default {
 computed() {
  form: {
   cache: false,
   get() {
    return this.$refs.form as Form
   }
  },
 }
}

interface person{
  gender:string
  age:number
}
interface person{
  name:string
}

interface person {
  name:string
  age:number
}
interface student {
  name:string
  age:number
  stuid:string
}
let person: person= {
  name:'name',
  age:1
}
let student: student = {
  name:'name',
  age:1,
  stuid:'stuid'
};

person = student //这样是可以的
student = person //这样不允许