.eslintrc.json

{
    "extends": "eslint:recommended",
    "ignorePatterns": ["vendor*", "dist*", "node_modules*", "submodule*"],
    "rules": {
        "indent": ["error", 4, {"SwitchCase": 1, "ArrayExpression": "first", "ObjectExpression": "first"}],
        "no-trailing-spaces": "error",
        "no-unneeded-ternary": "error",
        "no-whitespace-before-property": "error",
        "no-multi-spaces": "error",
        "curly": "error",
        "brace-style": "error",
        "semi-spacing": "error",
        "space-before-blocks": "error",
        "switch-colon-spacing": "error",
        "no-var": "warn",
        "prefer-const": "warn",
        "key-spacing": "error",
        "func-call-spacing": "error",
        "keyword-spacing": "error",
        "space-infix-ops": "error",
        "no-use-before-define": "error",
        "space-unary-ops": ["error", {"words": true, "nonwords": false}],
        "space-in-parens": ["error", "never"],
        "quotes": ["error", "single"],
        "space-before-function-paren": ["error", {"anonymous": "always"}],
        "camelcase": ["error", {"properties": "always", "ignoreImports": true, "ignoreGlobals": true, "ignoreDestructuring": true}],
        "semi": ["error", "always"]
    },
    "env": {
        "browser": true,
        "jquery": true,
        "es6": true
    },
    "parserOptions": {
        "sourceType": "module",
        "ecmaVersion": 8
    }
}