.eslintrc

{
    "parserOptions": {
        "ecmaVersion": 2017
    },
    "rules": {
        "linebreak-style": [
            0
        ],
        "semi": [
            2,
            "always"
        ],
        "semi-spacing": [2, {            // http://eslint.org/docs/rules/semi-spacing
            "before": false,
            "after": true
        }],
        "no-console": 0,
        "strict": ["error", "global"],
        "no-catch-shadow": 2, // disallow the catch clause parameter name being the same as a variable in the outer scope (off by default in the node environment)
        "no-delete-var": 2, // disallow deletion of variables
        "no-label-var": 2, // disallow labels that share a name with a variable
        "no-shadow": 2, // disallow declaration of variables already declared in the outer scope
        "no-shadow-restricted-names": 2, // disallow shadowing of names such as arguments
        "no-undef": 0, // disallow use of undeclared variables unless mentioned in a /*global */ block
        "no-undef-init": 2, // disallow use of undefined when initializing variables
        "no-undefined": 0, // disallow use of undefined variable (off by default)
        "no-unused-vars": 2, // disallow declaration of variables that are not used in the code
        "no-use-before-define": 2, // disallow use of variables before they are defined
        "complexity": 0, // specify the maximum cyclomatic complexity allowed in a program (off by default)
        "no-var": 2, // require let or const instead of var (off by default)
        "generator-star-spacing": [2, "before"] // enforce the spacing around the * in generator functions (off by default)
    },
    "env": {
        "node": true,
        "mocha": true
    },
    "extends": "eslint:recommended"
}