.eslintrc.json

{
    "root": true,
    "env": {
        "browser": true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaVersion": 5
    },
    "overrides": [
        {
          "files": ["test/*.js"],
          "parserOptions": {
            "ecmaVersion": 6
          }
        }
    ],
    "ignorePatterns": ["lib/**/*", "node_modules/**/*"],
    "rules": {
        "quotes": [
            "warn",
            "double"
        ],
        "semi": [
            "error",
            "always"
        ],
        "no-mixed-spaces-and-tabs": [
            "warn", "smart-tabs"
        ],
        "no-unused-vars": "warn",
        "no-prototype-builtins":"warn",
        "space-infix-ops": "warn",
        "no-redeclare": "off",
        "curly": "error"
    },
    "globals": {
        "dojo": "readonly",
        "React": "readonly",
        "Dropbox": "readonly",
        "$": "readonly",
        "jQuery": "readonly",

        "LCstorage": "readonly",
        "LZString": "readonly",

        "$I": "writable",
        "$r": "readonly",
        "i18nLang": "writable",
        "UIUtils": "writable",
        "ButtonModernHelper": "writable",

        "config": "readonly",

        "com": "readonly",
        "classes": "readonly",
        "mixin": "readonly"
    }
}