vue-cli4中，有一步询问你将所有插件配置写入package.json文件还是单独生成各自的配置文件

建议选择第一项，单独生成各自的配置文件！！！

如果选择第一项

此时的目录结构

此时的package.json

{
  "name": "test3",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "core-js": "^3.1.2",
    "vue": "^2.6.10",
    "vue-router": "^3.0.6",
    "vuex": "^3.0.1"
  },
  "devDependencies": {
    "@vue/cli-plugin-babel": "^4.0.0",
    "@vue/cli-plugin-eslint": "^4.0.0",
    "@vue/cli-plugin-router": "^4.0.0",
    "@vue/cli-plugin-vuex": "^4.0.0",
    "@vue/cli-service": "^4.0.0",
    "@vue/eslint-config-prettier": "^5.0.0",
    "babel-eslint": "^10.0.1",
    "eslint": "^5.16.0",
    "eslint-plugin-prettier": "^3.1.0",
    "eslint-plugin-vue": "^5.0.0",
    "less": "^3.0.4",
    "less-loader": "^5.0.0",
    "prettier": "^1.18.2",
    "vue-template-compiler": "^2.6.10"
  }
}

此时的.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true
  },
  extends: ["plugin:vue/essential", "@vue/prettier"],
  rules: {
    "no-console": process.env.NODE_ENV === "production" ? "error" : "off",
    "no-debugger": process.env.NODE_ENV === "production" ? "error" : "off"
  },
  parserOptions: {
    parser: "babel-eslint"
  }
};

如果选择第二项

项目中只会有一个package.json文件，所有插件的配置项都在这里面写，比如eslint配置文件

此时的目录结构

此时的package.json内容如下

{
  "name": "test",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "core-js": "^3.1.2",
    "view-design": "^4.0.1",
    "vue": "^2.6.10",
    "vue-router": "^3.0.6",
    "vuex": "^3.0.1"
  },
  "devDependencies": {
    "@vue/cli-plugin-babel": "^4.0.0",
    "@vue/cli-plugin-eslint": "^4.0.0",
    "@vue/cli-plugin-router": "^4.0.0",
    "@vue/cli-plugin-vuex": "^4.0.0",
    "@vue/cli-service": "^4.0.0",
    "@vue/eslint-config-prettier": "^5.0.0",
    "babel-eslint": "^10.0.1",
    "eslint": "^5.16.0",
    "eslint-plugin-prettier": "^3.1.0",
    "eslint-plugin-vue": "^5.0.0",
    "less": "^3.0.4",
    "less-loader": "^5.0.0",
    "prettier": "^1.18.2",
    "vue-template-compiler": "^2.6.10"
  },
  "eslintConfig": {
    "root": true,
    "env": {
      "node": true
    },
    "extends": [
      "plugin:vue/essential",
      "@vue/prettier"
    ],
    "rules": {
      "vue/no-parsing-error": [2, { "x-invalid-end-tag": false }]
    },
    "parserOptions": {
      "parser": "babel-eslint"
    }
  },
  "postcss": {
    "plugins": {
      "autoprefixer": {}
    }
  },
  "browserslist": [
    "> 1%",
    "last 2 versions"
  ]
}