.eslintrc

{
  "parser": "babel-eslint",
  "plugins": [
    "jsdoc",
    "jest",
    "flowtype",
  ],
  "env": {
    "jest/globals": true
  },
  "extends": "standard",
  "rules": {
    "brace-style": [2, "stroustrup"],
    "generator-star-spacing": ["error", {"before": false, "after": true }],
    "no-multiple-empty-lines": ["error", { "max": 2, "maxEOF": 1 }],
    "no-use-before-define": 0,
    "no-labels": 0,
    "comma-dangle": ["error", "only-multiline"],

    "space-unary-ops": [2, {
      "words": true,
      "nonwords": true,
      "overrides": {
        "--": false,
        "++": false
      }
    }],

    "spaced-comment": ["warn", "always", { "exceptions": ["/", ":"] }],

    "jest/no-disabled-tests": "warn",
    "jest/no-focused-tests": "error",
    "jest/no-identical-title": "error",

    "jsdoc/check-param-names": 1,
    "jsdoc/check-tag-names": 1,
    "jsdoc/check-types": 1,
    "jsdoc/newline-after-description": 1,
    "jsdoc/require-description-complete-sentence": 1,
    "jsdoc/require-hyphen-before-param-description": 1,
    "jsdoc/require-param": 1,
    "jsdoc/require-param-description": 1,
    "jsdoc/require-returns-description": 1,

    "flowtype/boolean-style": [2, "boolean"],
    "flowtype/define-flow-type": 1,
    "flowtype/delimiter-dangle": [2, "only-multiline"],
    "flowtype/generic-spacing": [2, "never"],
    "flowtype/no-primitive-constructor-types": 2,
    "flowtype/no-weak-types": 0,
    "flowtype/object-type-delimiter": [2, "comma"],
    "flowtype/require-parameter-type": [0, {
      "excludeArrowFunctions": true
    }],
    "flowtype/require-return-type": [2, {
      "excludeArrowFunctions": true
    }, { "annotateUndefined": "never" }],
    "flowtype/require-valid-file-annotation": 2,
    "flowtype/semi": [2, "never"],
    "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": 0,
    "flowtype/union-intersection-spacing": [2, "always"],
    "flowtype/use-flow-type": 1,
    "flowtype/valid-syntax": 1
  },
  "settings": {
    "flowtype": {
      "onlyFilesWithFlowAnnotation": true
    }
  }
}