.eslintrc.json

{
    "env": {
        "browser": true,
        "jquery": true
    },
    "parserOptions": {
        "ecmaVersion": 2015,
        "sourceType": "script",
        "ecmaFeatures": {}
    },
    "extends": "eslint:recommended",
    "rules": {
        "no-console": [
            "error"
        ],
        "indent": [
            "error",
            4
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "double"
        ],
        "semi": [
            "error",
            "always"
        ],
        "semi-spacing": [
            "error",
            {
                "before": false,
                "after": true
            }
        ],
        "space-before-blocks": [
            "error",
            "always"
        ],
        "space-before-function-paren": [
            "error",
            {
                "anonymous": "always",
                "named": "always",
                "asyncArrow": "always"
            }
        ],
        "space-in-parens": [
            "error",
            "never"
        ],
        "space-infix-ops": [
            "error",
            {
                "int32Hint": false
            }
        ],
        "space-unary-ops": [
            "error",
            {
                "words": true,
                "nonwords": false,
                "overrides": {}
            }
        ],
        "no-trailing-spaces": [
            "error",
            {
                "skipBlankLines": false
            }
        ],
        "block-spacing": [
            "error",
            "always"
        ],
        "brace-style": [
            "error",
            "1tbs",
            {
                "allowSingleLine": false
            }
        ],
        "object-property-newline": [
            "error",
            {
                "allowMultiplePropertiesPerLine": true
            }
        ],
        "one-var-declaration-per-line": [
            "error",
            "always"
        ],
        "one-var": [
            "error",
            "never"
        ],
        "keyword-spacing": [
            "error",
            {
                "before": true,
                "after": true
            }
        ],
        "no-unused-vars": [
            "error",
            {
                "vars": "all",
                "args": "after-used",
                "argsIgnorePattern": "^_",
                "destructuredArrayIgnorePattern": "^_"
            }
        ]
    }
}