我在 vue.js 3 + typescript 中有这段代码,我只想在数据中声明一个对象数组,但弹出几个错误
<template> <ul > <li v-if="!items.length">...loading</li> <li v-for="item in items" :key="item.id"> <!--{{item}}--> <!--donde va {{item}} pongo un slot tag con un name y binding el item que voy a utilizar en el parent--> <slot name="item" v-bind="item"></slot> </li> </ul> </template> <script lang="ts"> import { defineComponent } from 'vue' export default defineComponent({ name: 'child-slot-component', data() { return { items: [] } }, mounted() { setTimeout(() => { this.items = [ { id: 1, body: 'Scoped Slots Guide', username: 'Evan You', likes: 20 }, { id: 2, body: 'Vue Tutorial', username: 'Natalia Tepluhina', likes: 10 } ] }, 1000) }, }) </script> <style scoped> ul{ list-style-type: none; } </style>
id、正文、用户名和点赞类型“number”或“string”不可分配给“never”类型。ts(2322) 因为在数据中,当声明具有空数组的项目时,它说 property:never 并且我想声明如下内容: {id:number, body:string,username:string, likes:number}[]
如果不正确,使用打字稿处理此声明的正确方法是什么,或者我可能需要配置 tsconfig.json 或其他内容
提前致谢 哦,该应用程序运行良好!!
这是我的 tsconfig.json:
{ "compilerOptions": { "target": "esnext", "module": "esnext", "strict": true, "jsx": "preserve", "moduleResolution": "node", "experimentalDecorators": true, "skipLibCheck": true, "esModuleInterop": true, "allowSyntheticDefaultImports": true, "forceConsistentCasingInFileNames": true, "useDefineForClassFields": true, "sourceMap": true, "baseUrl": ".", "types": [ "webpack-env" ], "paths": { "@/*": [ "src/*" ] }, "lib": [ "esnext", "dom", "dom.iterable", "scripthost" ] }, "include": [ "src/**/*.ts", "src/**/*.tsx", "src/**/*.vue", "tests/**/*.ts", "tests/**/*.tsx" ], "exclude": [ "node_modules" ] }
这是我的 vue.config.js
const { defineConfig } = require('@vue/cli-service') module.exports = defineConfig({ transpileDependencies: true })
我的巴贝尔配置
module.exports = { presets: [ '@vue/cli-plugin-babel/preset' ] }
我的 shims-vue.d.ts
/* eslint-disable */ declare module '*.vue' { import type { DefineComponent } from 'vue' const component: DefineComponent<{}, {}, any> export default component }
和我的 .eslintrc.js
module.exports = { root: true, env: { node: true }, 'extends': [ 'plugin:vue/vue3-essential', 'eslint:recommended', '@vue/typescript/recommended' ], parserOptions: { ecmaVersion: 2020 }, rules: { 'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off', 'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off' } }
只是带vue create app-name的默认配置
P粉7757237222023-11-03 09:05:25
提前使用类型定义项目数组应该可以修复 TypeScript 错误。像这样的东西应该有效:
items: [] as { id: number, body: string, username: string, likes: number }[]