.eslintrc.json

{
  "root": true,
  "env": {
    "node": true
  },
  "parserOptions": {
    "ecmaVersion": 9,
    "ecmaFeatures": {
      "impliedStrict": true
    }
  },
  "rules": {
    "semi-style": [
      1,
      "first"
    ],
    "lines-between-class-members": [
      1,
      "always"
    ],
    "function-paren-newline": [
      1,
      "never"
    ],
    "implicit-arrow-linebreak": [
      1,
      "beside"
    ],
    "for-direction": 2,
    "switch-colon-spacing": [
      1,
      {
        "after": true,
        "before": false
      }
    ],
    "array-bracket-newline": [
      1,
      {
        "multiline": true
      }
    ],
    "no-buffer-constructor": 2,
    "no-await-in-loop": 2,
    "prefer-promise-reject-errors": 2,
    "template-tag-spacing": [
      1,
      "never"
    ],
    "no-useless-return": 1,
    "func-name-matching": [
      1,
      "always"
    ],
    "class-methods-use-this": 1,
    "no-template-curly-in-string": 1,
    "no-return-await": 2,
    "require-await": 2,
    "symbol-description": 1,
    "no-compare-neg-zero": 2,
    "arrow-spacing": [
      1,
      {
        "before": true,
        "after": true
      }
    ],
    "constructor-super": 2,
    "generator-star-spacing": [
      1,
      {
        "before": true,
        "after": false
      }
    ],
    "no-class-assign": 2,
    "no-const-assign": 2,
    "no-this-before-super": 2,
    "prefer-const": 1,
    "prefer-spread": 1,
    "require-yield": 2,
    "object-property-newline": [
      1,
      {
        "allowAllPropertiesOnSameLine": true
      }
    ],
    "object-shorthand": [
      1,
      "consistent-as-needed"
    ],
    "no-dupe-class-members": 2,
    "no-empty-pattern": 1,
    "no-new-symbol": 2,
    "no-self-assign": 1,
    "no-unused-labels": 1,
    "array-callback-return": 2,
    "no-empty-function": 1,
    "no-extra-label": 1,
    "no-useless-constructor": 1,
    "no-whitespace-before-property": 2,
    "prefer-rest-params": 1,
    "template-curly-spacing": 1,
    "yield-star-spacing": [
      1,
      {
        "before": false,
        "after": true
      }
    ],
    "no-useless-escape": 1,
    "no-duplicate-imports": 2,
    "no-unsafe-finally": 2,
    "no-useless-computed-key": 1,
    "no-useless-rename": 1,
    "key-spacing": [
      1,
      {
        "afterColon": true
      }
    ],
    "new-cap": [
      1,
      {
        "newIsCap": true,
        "capIsNew": true,
        "capIsNewExceptions": [
          "DataTable"
        ]
      }
    ],
    "new-parens": 1,
    "no-array-constructor": 1,
    "no-inline-comments": 1,
    "no-lonely-if": 1,
    "no-mixed-spaces-and-tabs": [
      1,
      "smart-tabs"
    ],
    "no-multiple-empty-lines": [
      1,
      {
        "max": 2
      }
    ],
    "no-nested-ternary": 1,
    "no-new-object": 1,
    "func-call-spacing": [
      1,
      "never"
    ],
    "no-trailing-spaces": 1,
    "no-unneeded-ternary": 1,
    "object-curly-spacing": [
      1,
      "never"
    ],
    "object-curly-newline": [
      1,
      {
        "minProperties": 3,
        "consistent": true
      }
    ],
    "operator-linebreak": [
      1,
      "after"
    ],
    "padded-blocks": [
      1,
      "never"
    ],
    "quote-props": [
      1,
      "as-needed"
    ],
    "quotes": [
      1,
      "single",
      "avoid-escape"
    ],
    "semi-spacing": [
      1,
      {
        "before": false,
        "after": true
      }
    ],
    "keyword-spacing": [
      1,
      {
        "before": true,
        "after": true
      }
    ],
    "space-before-blocks": [
      1,
      "always"
    ],
    "space-before-function-paren": [
      1,
      "never"
    ],
    "space-in-parens": [
      1,
      "never"
    ],
    "space-infix-ops": 1,
    "space-unary-ops": [
      1,
      {
        "words": true
      }
    ],
    "spaced-comment": [
      1,
      "always",
      {}
    ],
    "max-len": [
      1,
      {
        "code": 125,
        "tabWidth": 4,
        "ignoreComments": false,
        "ignoreUrls": true,
        "ignoreTemplateLiterals": true,
        "ignoreStrings": true
      }
    ],
    "comma-dangle": [
      1,
      "always-multiline"
    ],
    "no-cond-assign": [
      2,
      "except-parens"
    ],
    "no-constant-condition": 1,
    "no-debugger": 1,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-empty-character-class": 2,
    "no-empty": 2,
    "no-ex-assign": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-semi": 2,
    "no-func-assign": 2,
    "no-inner-declarations": [
      1,
      "both"
    ],
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-unsafe-negation": 2,
    "no-obj-calls": 2,
    "no-regex-spaces": 2,
    "no-sparse-arrays": 2,
    "no-unreachable": 1,
    "use-isnan": 2,
    "valid-typeof": 2,
    "no-unexpected-multiline": 2,
    "block-scoped-var": 1,
    "consistent-return": 1,
    "curly": [
      1,
      "all"
    ],
    "dot-notation": 1,
    "dot-location": [
      1,
      "property"
    ],
    "eqeqeq": [
      2,
      "smart"
    ],
    "no-caller": 2,
    "no-extend-native": 2,
    "no-extra-bind": 1,
    "no-floating-decimal": 1,
    "no-implied-eval": 2,
    //"no-invalid-this": 2, false positives on browser event callbacks
    "no-iterator": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 2,
    "no-multi-spaces": 1,
    "no-global-assign": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-new": 2,
    "no-octal-escape": 2,
    "no-octal": 2,
    "no-param-reassign": 1,
    "no-proto": 2,
    "no-redeclare": [
      2,
      {
        "builtinGlobals": true
      }
    ],
    "no-return-assign": [
      2,
      "always"
    ],
    "no-script-url": 2,
    "no-self-compare": 1,
    "no-throw-literal": 2,
    "no-unused-expressions": 2,
    "no-useless-call": 1,
    "no-void": 1,
    "wrap-iife": [
      1,
      "inside"
    ],
    "yoda": [
      1,
      "never",
      {
        "exceptRange": true
      }
    ],
    "no-delete-var": 2,
    "no-label-var": 1,
    "no-shadow-restricted-names": 2,
    "no-shadow": [
      1,
      {
        "builtinGlobals": true,
        "hoist": "functions"
      }
    ],
    "no-undef": 2,
    "no-unused-vars": 1,
    "no-use-before-define": [
      1,
      "nofunc"
    ],
    "callback-return": 2,
    "handle-callback-err": 1,
    "no-new-require": 2,
    "no-path-concat": 2,
    "no-process-exit": 2,
    "array-bracket-spacing": [
      1,
      "never",
      {}
    ],
    "brace-style": [
      1,
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "camelcase": [
      1,
      {
        "properties": "never"
      }
    ],
    "comma-spacing": [
      1,
      {
        "after": true
      }
    ],
    "comma-style": [
      1,
      "last"
    ],
    "computed-property-spacing": [
      1,
      "never"
    ],
    "func-style": [
      1,
      "declaration",
      {
        "allowArrowFunctions": true
      }
    ],
    "indent": [
      1,
      "tab",
      {
        "MemberExpression": 0
      }
    ],
    "semi": [
      1,
      "never"
    ],
    "prefer-object-spread": 1
  }
}