缘由
eslint报错信息: Parsing error: Adjacent JSX elements must be wrapped in an enclosing tag.
背景
新接手一个项目,甲方给到的框架,使用eslint文件校验文件,配置中使用babel-eslint进行校验,如下:
module.exports = {
root: true,
// parser: 'babel-eslint',
parser: 'vue-eslint-parser',
parserOptions: {
"parser": "babel-eslint",
"sourceType": 'module',
"ecmaVersion":2017,
"allowImportExportEverywhere": true //ignore eslint error: 'import' and 'export' may only appear at the top level
},
env: {
browser: true,
node: true,
es6: true,
},
extends: 'eslint:recommended',
// required to lint *.vue files
plugins: [
// 'html',
'vue'
],
// add your custom rules here
//it is base on https://github.com/vuejs/eslint-config-vue
'rules': {
'accessor-pairs': 2,
'arrow-spacing': [2, {
'before': true,
'after': true
}],
'block-spacing': [2, 'always'],
'brace-style': [2, '1tbs', {
'allowSingleLine': true
}],
'camelcase': [0, {
'properties': 'always'
}],
'comma-dangle': [2, 'never'],
'comma-spacing': [2, {
'before': false,
'after': true
}],
'comma-style': [2, 'last'],
'constructor-super': 2,
'curly': [2, 'multi-line'],
'dot-location': [2, 'property'],
'eol-last': 2,
'eqeqeq': "off",
'generator-star-spacing': [2, {
'before': true,
'after': true
}],
'handle-callback-err': [2, '^(err|error)$'],
'indent': [2, 2, {
'SwitchCase': 1
}],
'jsx-quotes': [2, 'prefer-single'],
'key-spacing': [2, {
'beforeColon': false,
'afterColon': true
}],
'keyword-spacing': [2, {
'before': true,
'after': true
}],
'new-cap': [2, {
'newIsCap': true,
'capIsNew': false
}],
'new-parens': 2,
'no-array-constructor': 2,
'no-caller': 2,
'no-console': 'off',
'no-class-assign': 2,
'no-cond-assign': 2,
'no-const-assign': 2,
'no-control-regex': 0,
'no-delete-var': 2,
'no-dupe-args': 2,
'no-dupe-class-members': 2,
'no-dupe-keys': 2,
'no-duplicate-case': 2,
'no-empty-character-class': 2,
'no-empty-pattern': 2,
'no-eval': 2,
'no-ex-assign': 2,
'no-extend-native': 2,
'no-extra-bind': 2,
'no-extra-boolean-cast': 2,
'no-extra-parens': [2, 'functions'],
'no-fallthrough': 2,
'no-floating-decimal': 2,
'no-func-assign': 2,
'no-implied-eval': 2,
'no-inner-declarations': [2, 'functions'],
'no-invalid-regexp': 2,
'no-irregular-whitespace': 2,
'no-iterator': 2,
'no-label-var': 2,
'no-labels': [2, {
'allowLoop': false,
'allowSwitch': false
}],
'no-lone-blocks': 2,
'no-mixed-spaces-and-tabs': 2,
'no-multi-spaces': 2,
'no-multi-str': 2,
'no-multiple-empty-lines': [2, {
'max': 1
}],
'no-native-reassign': 2,
'no-negated-in-lhs': 2,
'no-new-object': 0,
'no-new-require': 2,
'no-new-symbol': 2,
'no-new-wrappers': 2,
'no-obj-calls': 2,
'no-octal': 2,
'no-octal-escape': 2,
'no-path-concat': 2,
'no-proto': 2,
'no-redeclare': 2,
'no-regex-spaces': 2,
'no-return-assign': [2, 'except-parens'],
'no-self-assign': 2,
'no-self-compare': 2,
'no-sequences': 2,
'no-shadow-restricted-names': 2,
'no-spaced-func': 2,
'no-sparse-arrays': 2,
'no-this-before-super': 2,
'no-throw-literal': 2,
'no-trailing-spaces': 2,
'no-undef': 2,
'no-undef-init': 2,
'no-unexpected-multiline': 2,
'no-unmodified-loop-condition': 2,
'no-unneeded-ternary': [2, {
'defaultAssignment': false
}],
'no-unreachable': 2,
'no-unsafe-finally': 2,
'no-unused-vars': [2, {
'vars': 'all',
'args': 'none'
}],
'no-useless-call': 2,
'no-useless-computed-key': 2,
'no-useless-constructor': 2,
'no-useless-escape': 0,
'no-whitespace-before-property': 2,
'no-with': 2,
'one-var': [2, {
'initialized': 'never'
}],
'operator-linebreak': [2, 'after', {
'overrides': {
'?': 'before',
':': 'before'
}
}],
'padded-blocks': [2, 'never'],
'quotes': [2, 'single', {
'avoidEscape': true,
'allowTemplateLiterals': true
}],
'semi': [2, 'never'],
'semi-spacing': [2, {
'before': false,
'after': true
}],
'space-before-blocks': [2, 'always'],
'space-before-function-paren': [2, 'never'],
'space-in-parens': [2, 'never'],
'space-infix-ops': 2,
'space-unary-ops': [2, {
'words': true,
'nonwords': false
}],
'spaced-comment': [2, 'always', {
'markers': ['global', 'globals', 'eslint', 'eslint-disable', '*package', '!', ',']
}],
'template-curly-spacing': [2, 'never'],
'use-isnan': 2,
'valid-typeof': 2,
'wrap-iife': [2, 'any'],
'yield-star-spacing': [2, 'both'],
'yoda': [2, 'never'],
'prefer-const': 2,
'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
'object-curly-spacing': [2, 'always', {
objectsInObjects: false
}],
'array-bracket-spacing': [2, 'never']
}
}
** 项目运行正常,控制台报红**
开始一顿操作猛如虎
npm install
npm run dev
项目运行ok,但是请看下边大屏幕
编辑器:
控制台面板:来自强迫症的倔强:
github | stackoverflow | google 各种尝试,各种修改配置把自己的vscode玩坏了,庆幸的是最终找到如下解决方案
Ⅰ 安装eslint-plugin-vue:
$ npm install eslint-plugin-vue
Ⅱ 复制代码.eslintrc.js配置中修改
parser:'babel-eslint'修改成:parser: 'vue-eslint-parser',
** 但是出现新问题 用es7语法控制台报错(async/await)vue-eslint-parser 和 babel-eslint 要兼用** 解决方法 在eslint-plugin-vue官网看到关于这个问题的解释和解决方案: eslint-plugin-vue 里的大多数规则都需要 vue-eslint-parser 来解析 template 的AST, 然而 babel-eslint 和 vue-eslint-parser 在解析上有冲突,解决办法是把 "parser": "babel-eslint", 移入到 parserOptions 内。
// parser: 'babel-eslint',
parser: 'vue-eslint-parser',
parserOptions: {
"parser": "babel-eslint",
"sourceType": 'module',
"ecmaVersion":2017,
强迫症洗礼
解决完报错再着手倒腾下自己弄坏的的vscode还原之前,可以按照eslint配置自动格式化并保存 配置如下:
{
// 是否升级
"extensions.autoUpdate": false,
"editor.tabSize": 2,
"editor.fontSize": 14,
// 侧边栏位置
"workbench.sideBar.location": "left",
// 解决premitter和vscode默认格式化规则冲突
// "[html]": {
// "editor.defaultFormatter": "esbenp.prettier-vscode"
// },
// "[javascript]": {
// "editor.defaultFormatter": "esbenp.prettier-vscode"
// },
// "[json]": {
// "editor.defaultFormatter": "esbenp.prettier-vscode"
// },
// 一次性设置格式化
"editor.defaultFormatter": "esbenp.prettier-vscode",
"prettier-eslint.eslintIntegration": true,
// "prettier.eslintIntegration": true,
// 末尾不要分号
"prettier.semi": false,
// 单引号
"prettier.singleQuote": true,
// vetur默认配置
"vetur.format.defaultFormatter.html": "prettier",
"vetur.format.defaultFormatter.css": "prettier",
"vetur.format.defaultFormatter.postcss": "prettier",
"vetur.format.defaultFormatter.scss": "prettier",
"vetur.format.defaultFormatter.less": "prettier",
"vetur.format.defaultFormatter.stylus": "stylus-supremacy",
// vetur格式化js按照pretter-eslint格式进行
"vetur.format.defaultFormatter.js": "prettier-eslint",
"vetur.format.defaultFormatter.ts": "prettier",
// eslit格式化校验文件
// "eslint.validate": ["javascript", "javascriptreact", "vue"],
"vetur.format.defaultFormatterOptions": {
"prettier": {
"eslintIntegration": true
}
},
"[javascript]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
},
"[jsonc]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
},
// 保存按照eslint规则格式化
"editor.codeActionsOnSave": {
"source.fixAll.eslint": true,
},
// vue文件中emmet不起效
"emmet.triggerExpansionOnTab": true,
"emmet.showAbbreviationSuggestions": true,
"emmet.showExpandedAbbreviation": "always",
"emmet.includeLanguages": {
"vue-html": "html",
"vue": "html",
"wxml": "html"
},
"emmet.preferences": {
"css.propertyEnd": ";"
},
"files.associations": {
"*.cjson": "jsonc",
"*.wxss": "css",
"*.wxs": "javascript"
},
"minapp-vscode.disableAutoConfig": true,
}
小插曲 2020新升级的 vscode自动保存配置变了 ,autosave已失效 传送门
"editor.codeActionsOnSave": {
"source.fixAll.eslint": true,
},