.eslintrc.json

{
    "parser": "babel-eslint",
	"parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "module",
        "allowImportExportEverywhere": true
    },
    "globals":{
        "google": true,
        "GeolocationMarker": true
    },
    "env": {
        "browser": true,
        "es6": true,
        "jest": true
    },
    "extends": "eslint:recommended",
    "rules": {
        "space-unary-ops": [
        2, {
          "words": true,
          "nonwords": false
        }],
        "require-jsdoc": ["warn", {
            "require": {
                "FunctionDeclaration": true,
                "MethodDefinition": true,
                "ClassDeclaration": true,
                "ArrowFunctionExpression": true,
                "FunctionExpression": true
            }
        }],
        "no-alert": ["warn"],
        "curly":["warn"],
        "no-console": ["warn", { "allow": ["warn", "error"] }],
        "valid-jsdoc":["warn",{"matchDescription": ".+", "requireParamDescription": true}],
        "space-infix-ops": ["warn"],
        "max-len": ["error",{ "code": 130 }],
        "space-in-parens": ["warn", "never"],
        "block-spacing": ["warn", "always"],
        "comma-spacing": ["warn", { "before": false, "after": true }],
        "no-eval": "error",
        "no-empty": "warn",
        "keyword-spacing": "warn",
        "no-whitespace-before-property": "error",
        "no-unused-vars": ["warn", { "vars": "local", "args": "after-used", "ignoreRestSiblings": false }],
        "no-case-declarations": ["warn"]
    }
}