eslint.json

{
  "env": {
    "browser": true,
    "jquery": true
  },
  "extends": [
    "eslint:recommended"
  ],
  "globals": {
    "Cookies": "readonly",
    "I18n": "readonly",
    "L": "readonly",
    "OSM": "writable",
    "Matomo": "readonly",
    "Qs": "readonly",
    "updateLinks": "readonly"
  },
  "rules": {
    "accessor-pairs": "error",
    "array-bracket-newline": ["error", "consistent"],
    "array-bracket-spacing": "error",
    "array-callback-return": "error",
    "block-scoped-var": "error",
    "block-spacing": "error",
    "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
    "comma-dangle": "error",
    "comma-spacing": "error",
    "comma-style": "error",
    "computed-property-spacing": "error",
    "curly": ["error", "multi-line", "consistent"],
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    "eol-last": "error",
    "eqeqeq": ["error", "smart"],
    "func-call-spacing": "error",
    "indent": ["error", 2, {
      "SwitchCase": 1,
      "VariableDeclarator": "first",
      "FunctionDeclaration": { "parameters": "first" },
      "FunctionExpression": { "parameters": "first" },
      "CallExpression": { "arguments": "first" }
    }],
    "key-spacing": "error",
    "keyword-spacing": "error",
    "no-alert": "warn",
    "no-array-constructor": "error",
    "no-caller": "error",
    "no-console": "warn",
    "no-div-regex": "error",
    "no-eq-null": "error",
    "no-eval": "error",
    "no-extend-native": "error",
    "no-extra-bind": "error",
    "no-extra-label": "error",
    "no-floating-decimal": "error",
    "no-implicit-coercion": "warn",
    "no-implicit-globals": "warn",
    "no-implied-eval": "error",
    "no-invalid-this": "error",
    "no-iterator": "error",
    "no-labels": "error",
    "no-label-var": "error",
    "no-lone-blocks": "error",
    "no-lonely-if": "error",
    "no-loop-func": "error",
    "no-mixed-operators": "error",
    "no-multiple-empty-lines": "error",
    "no-multi-spaces": "error",
    "no-multi-str": "error",
    "no-negated-condition": "error",
    "no-nested-ternary": "error",
    "no-new": "error",
    "no-new-func": "error",
    "no-new-object": "error",
    "no-new-wrappers": "error",
    "no-octal-escape": "error",
    "no-param-reassign": "error",
    "no-process-env": "error",
    "no-proto": "error",
    "no-script-url": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": "error",
    "no-undef-init": "error",
    "no-undefined": "error",
    "no-unmodified-loop-condition": "error",
    "no-unneeded-ternary": "error",
    "no-unused-expressions": "off",
    "no-unused-vars": "error",
    "no-useless-call": "error",
    "no-useless-concat": "error",
    "no-useless-return": "error",
    "no-use-before-define": ["error", { "functions": false }],
    "no-void": "error",
    "no-warning-comments": "warn",
    "no-whitespace-before-property": "error",
    "object-curly-newline": ["error", { "consistent": true }],
    "object-curly-spacing": ["error", "always"],
    "object-property-newline": ["error", { "allowAllPropertiesOnSameLine": true }],
    "operator-linebreak": ["error", "after"],
    "padded-blocks": ["error", "never"],
    "quote-props": ["error", "consistent-as-needed", { "keywords": true, "numbers": true }],
    "quotes": ["error", "double"],
    "radix": ["error", "always"],
    "semi": ["error", "always"],
    "semi-spacing": "error",
    "semi-style": "error",
    "space-before-blocks": "error",
    "space-before-function-paren": ["error", { "named": "never" }],
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "space-unary-ops": "error",
    "switch-colon-spacing": "error",
    "wrap-iife": "error",
    "wrap-regex": "error",
    "yoda": "error"
  }
}