vue3项目中引入ts的详细图文教程

npm install -g typescript
yarn add -g typescript（需要添加环境变量后 tsc-v生效）

tsc --init //生成 tsconfig.json

{
    "compilerOptions": {
        "outDir": "./built/",
        "sourceMap": true,
        "strict": true,
        "noImplicitReturns": true,
        "module": "es2015",
        "moduleResolution": "node",
        "target": "es5"
    },
    "include": [
        "./src*"
    ]
}

declare module '*.vue' {
    import { ComponentOptions } from 'vue'
    const componentOptions: ComponentOptions
    export default componentOptions
}
declare module '*'   

"noImplicitAny": false,
"allowJs": true,

安装@vue/cli-plugin-typescript

yarn add  @vue/cli-plugin-typescript --save-dev

yarn add  @typescript-eslint/eslint-plugin @typescript-eslint/parser --save-dev

yarn add @vue/eslint-config-typescript --save-dev

module.exports = {
    extends: [
        'plugin:vue/vue3-essential',
        'eslint:recommended',
        '@vue/typescript/recommended'
    ],
    plugins: [
        'vue',
        '@typescript-eslint'
    ],
    rules: {
        '@typescript-eslint/no-unused-vars': 'error',
        // 允许非空断言
        '@typescript-eslint/no-non-null-assertion': 'off',
        // 允许自定义模块和命名空间
        '@typescript-eslint/no-namespace': 'off',
        // 允许对this设置alias
        '@typescript-eslint/no-this-alias': 'off',
        // 允许使用any类型
        '@typescript-eslint/no-explicit-any': ['off'],
        ......
    }
}

module.exports = {
    chainWEBpack: config => {
          config.resolve.extensions
            .add('ts')
            .add('tsx');
    }
}

<template>
  <div class="home">
    <img alt="Vue loGo" src="../assets/logo.png" />
    <HelloWorld msg="Welcome to Your vue.js App" />
  </div>
</template>

<script setup lang="ts">
import { ref } from "vue";
import HelloWorld from "@/components/HelloWorld.vue";
interface Todo {
  id: number;
  title: string;
  isCompleted: boolean;
}
const aa = ref<Todo[]>([])
console.log(aa);
const bb:boolean = false
console.log(bb);
</script>