.eslintrc.json

{
    "env": {
        "browser": true
    },
    "rules": {
        "indent": ["error", "tab", {
            "SwitchCase": 1
        }],
        "space-infix-ops": "error",
        "semi-spacing": "error",
        "block-spacing": "error",
        "comma-spacing": "error",
        "object-curly-spacing": ["error", "always"],
        "key-spacing": ["error", {
            "mode": "minimum",
            "afterColon": true
        }],
        "no-trailing-spaces": "error",
        "space-before-blocks": "error",

        "semi": ["error", "always", {
            "omitLastInOneLineBlock": true
        }]
    },
    "overrides": [
        {
            "files": ["js/Version.js"],
            "rules": {
                "object-curly-spacing": ["error", "never"]
            }
        },
        {
            "files": ["build/*.js", "test/*.js"],
            "env": {
                "es2016": true
            }
        }
    ]
}