.eslintrc.js

module.exports = {
    "env": {
        "browser" : true,
        "commonjs": true,
        "es6"     : true,
        "node"    : true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType" : "module"
    },
    "plugins": [
        "html"
    ],
    "rules": {
        "array-bracket-spacing"      : ["error", "never"],
        "array-callback-return"      : ["error"],
        "block-scoped-var"           : ["error"],
        "block-spacing"              : ["error", "always"],
        "curly"                      : ["error"],
        "dot-notation"               : ["error"],
        "eqeqeq"                     : ["error"],
        "indent"                     : ["error", 4],
        "linebreak-style"            : ["error", "unix"],
        "no-console"                 : ["warn"],
        "no-floating-decimal"        : ["error"],
        "no-implicit-coercion"       : ["error"],
        "no-implicit-globals"        : ["error"],
        "no-loop-func"               : ["error"],
        "no-return-assign"           : ["error"],
        "no-template-curly-in-string": ["error"],
        "no-unneeded-ternary"        : ["error"],
        "no-unused-vars"             : ["error", { "args": "none" }],
        "no-useless-computed-key"    : ["error"],
        "no-useless-return"          : ["error"],
        "no-var"                     : ["error"],
        "prefer-const"               : ["error"],
        "quotes"                     : ["error", "single"],
        "semi"                       : ["error", "always"]
    }
};