一，原因
这篇博客写得很清楚：解决VSCode Delete `␍`eslint(prettier/prettier)错误_vscode 删除cr-CSDN博客
还有这篇文章，解决办法很详细：滑动验证页面
二，解决办法
根目录下新建.prettierrc.js文件
module.exports = {
trailingComma: "all", // 设置是否末尾添加逗号的字段
arrowParens: "avoid", //箭头函数参数括号,avoid 能省略括号的时候就省略
useEditorConfig: false,
endOfLine: "auto", //避免报错delete (cr)的错
bracketSameLine: true,
jsxSingleQuote: true,
singleQuote: false, // 格式化以单引号为主
semi: true, // 格式化不加分号
printWidth: 300,
};
根目录下.eslintrc.js文件（可以不配置）
module.exports = {
env: {
browser: true,
es6: true,
node: true,
},
extends: [
"plugin:vue/essential",
"airbnb-base",
"plugin:prettier/recommended", //这样写，让pettier的规则，放在eslint规则扩展中，于是会经由eslint报错
],
globals: {
Atomics: "readonly",
SharedArrayBuffer: "readonly",
},
parserOptions: {
ecmaVersion: 2018,
sourceType: "module",
},
plugins: ["vue"],
rules: {
quotes: [2, "double"], //警告，必须双引号
"no-compare-neg-zero": 2, //禁止与 -0 进行比较
"no-cond-assign": [2, "except-parens"], //禁止条件语句中出现赋值操作符
"no-console": 0, //允许出现console
"no-constant-condition": 2, //禁止在条件中使用常量表达式
"no-control-regex": 2, //禁止在正则表达式中使用控制字符
"no-debugger": 0, //可以使用debugger
"no-dupe-args": 2, //禁止 function 定义中出现重名参数
"no-dupe-keys": 2, //禁止对象字面量中出现重复的 key
"no-duplicate-case": 2, //禁止出现重复的 case 标签
"no-empty": 2, //禁止出现空语句块
"no-empty-character-class": 2, //禁止在正则表达式中使用空字符集
"no-ex-assign": 2, //禁止对 catch 子句的参数重新赋值
"no-extra-boolean-cast": 2, //禁止不必要的布尔转换
"no-extra-parens": ["error", "functions"], //禁止不必要的括号
"no-extra-semi": 2, //禁止不必要的分号
"no-func-assign": 2, //禁止对 function 声明重新赋值
"no-inner-declarations": 0, //禁止在嵌套的块中出现变量声明或 function 声明
"no-invalid-regexp": 2, //禁止 RegExp 构造函数中存在无效的正则表达式字符串
"no-irregular-whitespace": 2, //禁止不规则的空白
"no-obj-calls": 2, //禁止把全局对象作为函数调用
"no-prototype-builtins": 2, //禁止直接调用 Object.prototypes 的内置属性
"no-regex-spaces": 2, //禁止正则表达式字面量中出现多个空格
"no-sparse-arrays": 2, //禁用稀疏数组
"no-template-curly-in-string": 0, //禁止在常规字符串中出现模板字面量占位符语法
"no-unexpected-multiline": 2, //禁止出现令人困惑的多行表达式
"no-unreachable": 2, //禁止在 return、throw、continue 和 break 语句之后出现不可达代码
"no-unsafe-finally": 2, //禁止在 finally 语句块中出现控制流语句
"no-unsafe-negation": 2, //禁止对关系运算符的左操作数使用否定操作符
"use-isnan": 2, //要求使用 isNaN() 检查 NaN
"valid-jsdoc": "off", //
"valid-typeof": 2, //强制 typeof 表达式与有效的字符串进行比较
curly: 2, //强制所有控制语句使用一致的括号风格
"consistent-return": [
2,
{
treatUndefinedAsUnspecified: true,
},
],
"default-case": 2,
eqeqeq: "off",
"guard-for-in": 0,
"no-case-declarations": 0,
"no-empty-pattern": 2,
"no-fallthrough": 2,
"no-global-assign": [
2,
{
exceptions: [],
},
],
"no-octal": 2,
"no-redeclare": 2,
"no-self-assign": 2,
"no-unused-labels": 2,
"no-useless-escape": 2,
strict: 2,
"no-delete-var": 2,
"no-undefined": 0,
"no-undef": 2,
"no-use-before-define": 2,
"array-bracket-spacing": [2, "never"],
"block-spacing": [2, "always"],
"brace-style": [2, "1tbs"],
"comma-dangle": ["error", "never"],
"comma-spacing": [
2,
{
before: false,
after: true,
},
],
"comma-style": [2, "last"],
"computed-property-spacing": ["error", "never"],
"eol-last": [2, "always"],
"func-call-spacing": ["error", "never"],
indent: [
"error",
2,
{
SwitchCase: 1,
},
],
"jsx-quotes": ["error", "prefer-double"],
"key-spacing": [
"error",
{
beforeColon: false,
afterColon: true,
},
],
"new-cap": [
"error",
{
newIsCap: true,
capIsNewExceptionPattern: "(Type[a-zA-Z0-9]+|Deco[a-zA-Z0-9]+)+",
},
],
"new-parens": "error",
"no-mixed-spaces-and-tabs": 2,
"no-multi-assign": "error",
"no-multiple-empty-lines": "error",
semi: [
2,
"always",
{
omitLastInOneLineBlock: true,
},
],
"constructor-super": 2,
"no-class-assign": 0,
"no-const-assign": 2,
"no-this-before-super": 2,
"no-var": 2,
"no-dupe-class-members": 2,
"no-new-symbol": 2,
"require-yield": 2,
"prefer-const": 0,
},
};
