.eslintrc.json

{
    "extends": ["eslint:recommended", "plugin:react/recommended"],
    "parser": "babel-eslint",
    "plugins": [
        "flowtype",
        "react"
    ],
    "ecmaFeatures": {
        "jsx": true
    },
    "env": {
        "es6": true
    },
    "rules": {
        "no-console": 0,
        "max-len": ["error", 120],
        "quotes": ["error", "double", { "avoidEscape": true }],
        "no-trailing-spaces": 2,
        "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 1 }],
        "no-undef": 0,
        "react/jsx-no-bind": ["error", { "allowArrowFunctions": true }],
        "react/jsx-no-undef": 2,
        "react/prop-types": 0,
        "spaced-comment": ["error", "always", { "block": { "balanced": true } }],
        "flowtype/boolean-style": [
            2,
            "boolean"
        ],
        "flowtype/define-flow-type": 1,
        "flowtype/delimiter-dangle": [
            2,
            "never"
        ],
        "flowtype/generic-spacing": [
            2,
            "never"
        ],
        "flowtype/no-primitive-constructor-types": 2,
        "flowtype/no-types-missing-file-annotation": 2,
        "flowtype/no-weak-types": 2,
        "flowtype/object-type-delimiter": [
            2,
            "comma"
        ],
        "flowtype/require-parameter-type": [
            2,
            {
                "excludeArrowFunctions": true
            }
        ],
        "flowtype/require-return-type": [
            2,
            "always",
            {
                "annotateUndefined": "never",
                "excludeArrowFunctions": true
            }
        ],
        "flowtype/require-valid-file-annotation": [2, "always"],
        "flowtype/semi": [
            2,
            "always"
        ],
        "flowtype/space-after-type-colon": [
            2,
            "always"
        ],
        "flowtype/space-before-generic-bracket": [
            2,
            "never"
        ],
        "flowtype/space-before-type-colon": [
            2,
            "never"
        ],
        "flowtype/type-id-match": [
            2,
            "^([A-Z][a-z0-9]+)+$"
        ],
        "flowtype/union-intersection-spacing": [
            2,
            "always"
        ],
        "flowtype/use-flow-type": 1,
        "flowtype/valid-syntax": 1
    },
    "settings": {
        "flowtype": {
            "onlyFilesWithFlowAnnotation": false
        }
    }
}