.eslintrc.js

module.exports = {
  "env": {
    "node": true,
    "es2021": true
  },
  "globals": {
    "document": "readonly",
    "navigator": "readonly",
    "window": "readonly"
  },
  "parser": null,
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "plugins": [
    "promise",
    "n",
  ],
  "overrides": [{
    "files": [
      "test/**/*.js",
    ],
    "env": {
      "jest": true,
    },
    "globals": {
      "sinon": true,
    }
  }],
  "rules": {
    "indent": [
      "error",
      4
    ],
    "no-multiple-empty-lines": [
      "off",
      {
        "max": 1,
        "maxEOF": 0
      }
    ],
    "space-before-function-paren": [
      "off",
      "always"
    ],
    "padded-blocks": [
      "off",
      {
        "blocks": "never",
        "switches": "never",
        "classes": "never"
      }
    ],
    "no-whitespace-before-property": [
      "off"
    ],
    "no-multi-spaces": [
      "off"
    ],
    "comma-dangle": [
      "off",
      {
        "arrays": "never",
        "objects": "never",
        "imports": "never",
        "exports": "never",
        "functions": "never"
      }
    ],
    "one-var": [
      "off",
      {
        "initialized": "never"
      }
    ],
    "key-spacing": [
      "off",
      {
        "beforeColon": false,
        "afterColon": true
      }
    ],
    "no-undef-init": [
      "off"
    ],
    "prefer-arrow-callback": [
      "error"
    ],
    "object-shorthand": [
      "error",
      "always"
    ],
    "no-var": [
      "error"
    ],
    "prefer-const": [
      "error",
      {
        "destructuring": "all",
        "ignoreReadBeforeAssign": false
      }
    ],
    "array-bracket-spacing": [
      "off",
      "never"
    ],
    "quote-props": [
      "off",
      "as-needed"
    ],
    "prefer-destructuring": [
      "error",
      {
        "VariableDeclarator": {
          "array": false,
          "object": true
        },
        "AssignmentExpression": {
          "array": false,
          "object": true
        }
      },
      {
        "enforceForRenamedProperties": false
      }
    ],
    "semi": [
      "error",
      "always"
    ],
    "no-extra-semi": [
      "error"
    ],
    "accessor-pairs": [
      "error",
      {
        "setWithoutGet": true,
        "enforceForClassMembers": true,
        "getWithoutSet": false
      }
    ],
    "array-callback-return": [
      "error",
      {
        "allowImplicit": false,
        "checkForEach": false
      }
    ],
    "arrow-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "block-spacing": [
      "error",
      "always"
    ],
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "camelcase": [
      "error",
      {
        "allow": [
          "^UNSAFE_"
        ],
        "properties": "never",
        "ignoreGlobals": true,
        "ignoreDestructuring": false,
        "ignoreImports": false
      }
    ],
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "comma-style": [
      "error",
      "last"
    ],
    "computed-property-spacing": [
      "error",
      "never",
      {
        "enforceForClassMembers": true
      }
    ],
    "constructor-super": [
      "error"
    ],
    "curly": [
      "error",
      "multi-line"
    ],
    "default-case-last": [
      "error"
    ],
    "dot-location": [
      "error",
      "property"
    ],
    "dot-notation": [
      "error",
      {
        "allowKeywords": true,
        "allowPattern": ""
      }
    ],
    "eol-last": [
      "error"
    ],
    "eqeqeq": [
      "error",
      "always",
      {
        "null": "ignore"
      }
    ],
    "func-call-spacing": [
      "error",
      "never"
    ],
    "generator-star-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "lines-between-class-members": [
      "error",
      "always",
      {
        "exceptAfterSingleLine": true
      }
    ],
    "multiline-ternary": [
      "error",
      "always-multiline"
    ],
    "new-cap": [
      "error",
      {
        "newIsCap": true,
        "capIsNew": false,
        "properties": true
      }
    ],
    "new-parens": [
      "error"
    ],
    "no-array-constructor": [
      "error"
    ],
    "no-async-promise-executor": [
      "error"
    ],
    "no-caller": [
      "error"
    ],
    "no-case-declarations": [
      "error"
    ],
    "no-class-assign": [
      "error"
    ],
    "no-compare-neg-zero": [
      "error"
    ],
    "no-cond-assign": [
      "error"
    ],
    "no-const-assign": [
      "error"
    ],
    "no-constant-condition": [
      "error",
      {
        "checkLoops": false
      }
    ],
    "no-control-regex": [
      "error"
    ],
    "no-debugger": [
      "error"
    ],
    "no-delete-var": [
      "error"
    ],
    "no-dupe-args": [
      "error"
    ],
    "no-dupe-class-members": [
      "error"
    ],
    "no-dupe-keys": [
      "error"
    ],
    "no-duplicate-case": [
      "error"
    ],
    "no-useless-backreference": [
      "error"
    ],
    "no-empty": [
      "error",
      {
        "allowEmptyCatch": true
      }
    ],
    "no-empty-character-class": [
      "error"
    ],
    "no-empty-pattern": [
      "error"
    ],
    "no-eval": [
      "error"
    ],
    "no-ex-assign": [
      "error"
    ],
    "no-extend-native": [
      "error"
    ],
    "no-extra-bind": [
      "error"
    ],
    "no-extra-boolean-cast": [
      "error"
    ],
    "no-extra-parens": [
      "error",
      "functions"
    ],
    "no-fallthrough": [
      "error"
    ],
    "no-floating-decimal": [
      "error"
    ],
    "no-func-assign": [
      "error"
    ],
    "no-global-assign": [
      "error"
    ],
    "no-implied-eval": [
      "error"
    ],
    "no-import-assign": [
      "error"
    ],
    "no-invalid-regexp": [
      "error"
    ],
    "no-irregular-whitespace": [
      "error"
    ],
    "no-iterator": [
      "error"
    ],
    "no-labels": [
      "error",
      {
        "allowLoop": false,
        "allowSwitch": false
      }
    ],
    "no-lone-blocks": [
      "error"
    ],
    "no-loss-of-precision": [
      "error"
    ],
    "no-misleading-character-class": [
      "error"
    ],
    "no-prototype-builtins": [
      "error"
    ],
    "no-useless-catch": [
      "error"
    ],
    "no-mixed-operators": [
      "error",
      {
        "groups": [
          [
            "==",
            "!=",
            "===",
            "!==",
            ">",
            ">=",
            "<",
            "<="
          ],
          [
            "&&",
            "||"
          ],
          [
            "in",
            "instanceof"
          ]
        ],
        "allowSamePrecedence": true
      }
    ],
    "no-mixed-spaces-and-tabs": [
      "error"
    ],
    "no-multi-str": [
      "error"
    ],
    "no-new": [
      "error"
    ],
    "no-new-func": [
      "error"
    ],
    "no-new-object": [
      "error"
    ],
    "no-new-symbol": [
      "error"
    ],
    "no-new-wrappers": [
      "error"
    ],
    "no-obj-calls": [
      "error"
    ],
    "no-octal": [
      "error"
    ],
    "no-octal-escape": [
      "error"
    ],
    "no-proto": [
      "error"
    ],
    "no-redeclare": [
      "error",
      {
        "builtinGlobals": false
      }
    ],
    "no-regex-spaces": [
      "error"
    ],
    "no-return-assign": [
      "error",
      "except-parens"
    ],
    "no-self-assign": [
      "error",
      {
        "props": true
      }
    ],
    "no-self-compare": [
      "error"
    ],
    "no-sequences": [
      "error"
    ],
    "no-shadow-restricted-names": [
      "error"
    ],
    "no-sparse-arrays": [
      "error"
    ],
    "no-tabs": [
      "error"
    ],
    "no-template-curly-in-string": [
      "error"
    ],
    "no-this-before-super": [
      "error"
    ],
    "no-throw-literal": [
      "error"
    ],
    "no-trailing-spaces": [
      "error"
    ],
    "no-undef": [
      "error"
    ],
    "no-unexpected-multiline": [
      "error"
    ],
    "no-unmodified-loop-condition": [
      "error"
    ],
    "no-unneeded-ternary": [
      "error",
      {
        "defaultAssignment": false
      }
    ],
    "no-unreachable": [
      "error"
    ],
    "no-unreachable-loop": [
      "error"
    ],
    "no-unsafe-finally": [
      "error"
    ],
    "no-unsafe-negation": [
      "error"
    ],
    "no-unused-expressions": [
      "error",
      {
        "allowShortCircuit": true,
        "allowTernary": true,
        "allowTaggedTemplates": true,
        "enforceForJSX": false
      }
    ],
    "no-unused-vars": [
      "error",
      {
        "args": "none",
        "caughtErrors": "none",
        "ignoreRestSiblings": true,
        "vars": "all"
      }
    ],
    "no-use-before-define": [
      "error",
      {
        "functions": false,
        "classes": false,
        "variables": false
      }
    ],
    "no-useless-call": [
      "error"
    ],
    "no-useless-computed-key": [
      "error"
    ],
    "no-useless-constructor": [
      "error"
    ],
    "no-useless-escape": [
      "error"
    ],
    "no-useless-rename": [
      "error"
    ],
    "no-useless-return": [
      "error"
    ],
    "no-void": [
      "error"
    ],
    "no-with": [
      "error"
    ],
    "object-curly-newline": [
      "error",
      {
        "multiline": true,
        "consistent": true
      }
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "object-property-newline": [
      "error",
      {
        "allowMultiplePropertiesPerLine": true,
        "allowAllPropertiesOnSameLine": false
      }
    ],
    "operator-linebreak": [
      "error",
      "after",
      {
        "overrides": {
          "?": "before",
          ":": "before",
          "|>": "before"
        }
      }
    ],
    "prefer-promise-reject-errors": [
      "error"
    ],
    "prefer-regex-literals": [
      "error",
      {
        "disallowRedundantWrapping": true
      }
    ],
    "quotes": [
      "error",
      "single",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": false
      }
    ],
    "rest-spread-spacing": [
      "error",
      "never"
    ],
    "semi-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "space-before-blocks": [
      "error",
      "always"
    ],
    "space-in-parens": [
      "error",
      "never"
    ],
    "space-infix-ops": [
      "error"
    ],
    "space-unary-ops": [
      "error",
      {
        "words": true,
        "nonwords": false
      }
    ],
    "spaced-comment": [
      "error",
      "always",
      {
        "line": {
          "markers": [
            "*package",
            "!",
            "/",
            ",",
            "="
          ]
        },
        "block": {
          "balanced": true,
          "markers": [
            "*package",
            "!",
            ",",
            ":",
            "::",
            "flow-include"
          ],
          "exceptions": [
            "*"
          ]
        }
      }
    ],
    "symbol-description": [
      "error"
    ],
    "template-curly-spacing": [
      "error",
      "never"
    ],
    "template-tag-spacing": [
      "error",
      "never"
    ],
    "unicode-bom": [
      "error",
      "never"
    ],
    "use-isnan": [
      "error",
      {
        "enforceForSwitchCase": true,
        "enforceForIndexOf": true
      }
    ],
    "valid-typeof": [
      "error",
      {
        "requireStringLiterals": true
      }
    ],
    "wrap-iife": [
      "error",
      "any",
      {
        "functionPrototypeMethods": true
      }
    ],
    "yield-star-spacing": [
      "error",
      "both"
    ],
    "yoda": [
      "error",
      "never"
    ],
    // "import/export": [
    //   "error"
    // ],
    // "import/first": [
    //   "error"
    // ],
    // "import/no-absolute-path": [
    //   "error",
    //   {
    //     "esmodule": true,
    //     "commonjs": true,
    //     "amd": false
    //   }
    // ],
    // "import/no-duplicates": [
    //   "error"
    // ],
    // "import/no-named-default": [
    //   "error"
    // ],
    // "import/no-webpack-loader-syntax": [
    //   "error"
    // ],
    "n/handle-callback-err": [
      "error",
      "^(err|error)$"
    ],
    "n/no-callback-literal": [
      "error"
    ],
    "n/no-deprecated-api": [
      "error"
    ],
    "n/no-exports-assign": [
      "error"
    ],
    "n/no-new-require": [
      "error"
    ],
    "n/no-path-concat": [
      "error"
    ],
    "n/process-exit-as-throw": [
      "error"
    ],
    "promise/param-names": [
      "error"
    ]
  },
  "settings": {},
  "ignorePatterns": [
    "src/configuration-optimizers/*-data.js",
    "examples/*/node_modules/**/*",
    "tools/*/node_modules/**/*"
  ]
};