{ "env": { "browser": true, "commonjs": true, "es6": true, "node": true }, "parserOptions": { "ecmaFeatures": { "jsx": true, "experimentalObjectRestSpread": true }, "sourceType": "module" }, "rules": { "no-const-assign": "warn", "no-this-before-super": "warn", "no-undef": "warn", "no-unreachable": "warn", "no-unused-vars": "warn", "constructor-super": "warn", "valid-typeof": "warn" } }