.eslintrc

{
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2020,
    "sourceType": "module"
  },

  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },

  "globals": {
    "document": false,
    "escape": false,
    "navigator": false,
    "unescape": false,
    "window": false,
    "describe": true,
    "before": true,
    "it": true,
    "expect": true,
    "sinon": true
  },

  //"parser": "babel-eslint",

  "plugins": [
    "react"
  ],

  "rules": {
    "block-scoped-var": 2,
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "camelcase": [2, { "properties": "always" }],
    // "comma-dangle": [2, "never"],
    "comma-spacing": [2, { "before": false, "after": true }],
    "comma-style": [2, "last"],
    "complexity": 0,
    "consistent-return": 2,
    "consistent-this": 0,
    "curly": [2, "multi-line"],
    "default-case": 0,
    "dot-location": [2, "property"],
    "dot-notation": 0,
    "eol-last": 2,
    "eqeqeq": [2, "allow-null"],
    "func-names": 0,
    "func-style": 0,
    "generator-star-spacing": [2, "both"],
    "guard-for-in": 0,
    "handle-callback-err": [2, "^(err|error|anySpecificError)$" ],
    "indent": [2, 2, { "SwitchCase": 1 }],
    "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
    "keyword-spacing": [2, {"before": true, "after": true}],
    "linebreak-style": 0,
    "max-depth": 0,
    "max-len": [2, 120, 4],
    "max-nested-callbacks": 0,
    "max-params": 0,
    "max-statements": 0,
    "new-cap": [2, { "newIsCap": true, "capIsNew": false }],
    "newline-after-var": [2, "always"],
    "new-parens": 2,
    "no-alert": 0,
    "no-array-constructor": 2,
    "no-bitwise": 0,
    "no-caller": 2,
    "no-catch-shadow": 0,
    "no-cond-assign": 2,
    "no-console": 0,
    "no-constant-condition": 0,
    "no-continue": 0,
    "no-control-regex": 2,
    "no-debugger": 2,
    "no-delete-var": 2,
    "no-div-regex": 0,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-else-return": 2,
    "no-empty": 0,
    "no-empty-character-class": 2,
    "no-eq-null": 0,
    "no-eval": 2,
    "no-ex-assign": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-parens": 0,
    "no-extra-semi": 0,
    "no-extra-strict": 0,
    "no-fallthrough": 2,
    "no-floating-decimal": 2,
    "no-func-assign": 2,
    "no-implied-eval": 2,
    "no-inline-comments": 0,
    "no-inner-declarations": [2, "functions"],
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-iterator": 2,
    "no-label-var": 2,
    "no-labels": 2,
    "no-lone-blocks": 0,
    "no-lonely-if": 0,
    "no-loop-func": 0,
    "no-mixed-requires": 0,
    "no-mixed-spaces-and-tabs": [2, false],
    "no-multi-spaces": 2,
    "no-multi-str": 2,
    "no-native-reassign": 2,
    "no-negated-in-lhs": 2,
    "no-nested-ternary": 0,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-object": 2,
    "no-new-require": 2,
    "no-new-wrappers": 2,
    "no-obj-calls": 2,
    "no-octal": 2,
    "no-octal-escape": 2,
    "no-path-concat": 0,
    "no-plusplus": 0,
    "no-process-env": 0,
    "no-process-exit": 0,
    "no-proto": 2,
    "no-redeclare": 2,
    "no-regex-spaces": 2,
    "no-reserved-keys": 0,
    "no-restricted-modules": 0,
    "no-return-assign": 2,
    "no-script-url": 0,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-shadow": 0,
    "no-shadow-restricted-names": 2,
    "no-spaced-func": 2,
    "no-sparse-arrays": 2,
    "no-sync": 0,
    "no-ternary": 0,
    "no-throw-literal": 2,
    "no-trailing-spaces": 2,
    "no-undef": 2,
    "no-undef-init": 2,
    "no-undefined": 0,
    "no-underscore-dangle": 0,
    "no-unneeded-ternary": 2,
    "no-unreachable": 2,
    "no-unused-expressions": 0,
    "no-unused-vars": [1, { "vars": "all", "args": "none" }],
    "no-use-before-define": 2,
    "no-var": 0,
    "no-void": 0,
    "no-warning-comments": 0,
    "no-with": 2,
    "one-var": 0,
    "operator-assignment": 0,
    "operator-linebreak": [2, "after"],
    "padded-blocks": 0,
    "quote-props": 0,
    "quotes": [2, "single", "avoid-escape"],
    "radix": 2,
    "semi": [2, "always"],
    "semi-spacing": 0,
    "sort-vars": 0,
    "space-before-blocks": [2, "always"],
    "space-in-brackets": 0,
    "space-in-parens": [2, "never"],
    "space-infix-ops": 2,
    "space-unary-ops": [2, { "words": true, "nonwords": false }],
    "spaced-comment": [2, "always"],
    "strict": 0,
    "use-isnan": 2,
    "valid-jsdoc": 0,
    "valid-typeof": 2,
    "vars-on-top": 2,
    "wrap-iife": [2, "any"],
    "wrap-regex": 0,
    "yoda": [2, "never"]
  }
}