.eslintrc.json

{
    "env": {
        "es6"    : true,
        "node"   : true,
        "browser": true
    },
    "extends": [ "eslint:recommended", "plugin:vue/recommended" ],

    "parser"       : "vue-eslint-parser",
    "parserOptions": {

        "parser"     : "babel-eslint",
        "sourceType" : "module",

        "ecmaVersion" : 2018,
        "ecmaFeatures": {

            "globalReturn" : false,
            "impliedStrict": false,
            "jsx"          : false
        }
    },
    "rules": {
        "quotes": [ "error", "single" ],
        "semi"  : [ "error", "always" ],
        "curly" : [ "warn" , "all"    ],

        "indent": [ "warn", 4, {
            "SwitchCase"        : 1,
            "FunctionExpression": { "parameters": "first" },
            "CallExpression"    : { "arguments" : "first" }
        }],

        "no-console"    : "off",
        "no-fallthrough": "off",

        "vue/html-indent"                           : [ "error", 4, { "baseIndent": 0 }],
        "vue/html-closing-bracket-newline"          : [ "error", { "singleline": "never", "multiline": "never" }],

        "vue/multiline-html-element-content-newline": [ "warn", { "allowEmptyLines" : true }],

        "vue/no-multi-spaces"                        : "off",
        "vue/html-self-closing"                      : "off",
        "vue/max-attributes-per-line"                : "off",
        "vue/singleline-html-element-content-newline": "off",
        "vue/attributes-order"                       : "off"
    }
}