.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "plugins": [
    "eslint-plugin-import",
    "eslint-plugin-jsdoc",
    "@typescript-eslint"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "extraFileExtensions": [
      ".json"
    ],
    "ecmaVersion": 2018,
    "sourceType": "module",
    "project": "./tsconfig.lint.json"
  },
  "rules": {
    "@typescript-eslint/consistent-type-definitions": "off",
    "@typescript-eslint/dot-notation": "off",
    "@typescript-eslint/explicit-member-accessibility": [
      "off",
      {
        "accessibility": "explicit"
      }
    ],
    "@typescript-eslint/indent": "error",
    "@typescript-eslint/member-delimiter-style": [
      "error",
      {
        "multiline": {
          "delimiter": "semi",
          "requireLast": true
        },
        "singleline": {
          "delimiter": "semi",
          "requireLast": true
        }
      }
    ],
    "@typescript-eslint/member-ordering": "error",
    "@typescript-eslint/no-empty-function": "off",
    "@typescript-eslint/no-misused-new": "error",
    "@typescript-eslint/no-non-null-assertion": "error",
    "@typescript-eslint/no-shadow": [
      "error",
      {
        "hoist": "all"
      }
    ],
    "@typescript-eslint/no-unused-expressions": "error",
    "@typescript-eslint/prefer-function-type": "error",
    "@typescript-eslint/quotes": [
      "error",
      "single"
    ],
    "@typescript-eslint/semi": [
      "error",
      "always"
    ],
    "@typescript-eslint/type-annotation-spacing": "error",
    "@typescript-eslint/unified-signatures": "error",
    "brace-style": [
      "error",
      "1tbs"
    ],
    "constructor-super": "error",
    "curly": "off",
    "dot-notation": "off",
    "eol-last": "error",
    "eqeqeq": [
      "error",
      "smart"
    ],
    "guard-for-in": "error",
    "id-blacklist": "off",
    "id-match": "off",
    "import/no-deprecated": "warn",
    "jsdoc/no-types": "off",
    "no-bitwise": "error",
    "no-caller": "error",
    "no-console": [
      "error",
      {
        "allow": [
          "log",
          "warn",
          "dir",
          "timeLog",
          "assert",
          "clear",
          "count",
          "countReset",
          "group",
          "groupEnd",
          "table",
          "dirxml",
          "error",
          "groupCollapsed",
          "Console",
          "profile",
          "profileEnd",
          "timeStamp",
          "context"
        ]
      }
    ],
    "no-debugger": "error",
    "no-empty": "off",
    "no-empty-function": "off",
    "no-eval": "error",
    "no-fallthrough": "error",
    "no-new-wrappers": "error",
    "no-restricted-imports": [
      "error",
      "rxjs/Rx"
    ],
    "no-shadow": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": "error",
    "no-undef-init": "error",
    "no-underscore-dangle": "off",
    "no-unused-expressions": "error",
    "no-unused-labels": "error",
    "no-var": "error",
    "prefer-const": "error",
    "radix": "error",
    "semi": "error",
    "spaced-comment": [
      "error",
      "always",
      {
        "markers": [
          "/"
        ]
      }
    ],
    // transpiling async-await produces a really big build size,
    // so we try to not use async if we do not have an await.
    "@typescript-eslint/require-await": "error",
    "require-await": "error",
    // overrides
    // TODO: remove these rules one by one
    // to be better aligned with the recommended settings
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/no-unsafe-member-access": "off",
    "@typescript-eslint/no-unsafe-call": "off",
    "@typescript-eslint/no-unsafe-assignment": "off",
    "@typescript-eslint/no-unsafe-return": "off",
    "@typescript-eslint/no-floating-promises": "off",
    "@typescript-eslint/no-var-requires": "off",
    "@typescript-eslint/naming-convention": "off",
    "@typescript-eslint/restrict-plus-operands": "off",
    "@typescript-eslint/await-thenable": "off",
    "@typescript-eslint/no-unnecessary-type-assertion": "off",
    "@typescript-eslint/no-misused-promises": "off",
    "@typescript-eslint/restrict-template-expressions": "off",
    "no-prototype-builtins": "off",
    "@typescript-eslint/ban-types": "off",
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "argsIgnorePattern": "^_"
      }
    ],
    "no-unused-vars": [
      "error",
      {
        "argsIgnorePattern": "^_"
      }
    ],
    "@typescript-eslint/triple-slash-reference": "off",
    "@typescript-eslint/no-inferrable-types": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "indent": "off",
    "@typescript-eslint/no-empty-interface": "off",
    "@typescript-eslint/semi": "off",
    "no-trailing-spaces": "off",
    "@typescript-eslint/member-delimiter-style": "off",
    "@typescript-eslint/indent": "off",
    "brace-style": "off",
    "semi": "off",
    "@typescript-eslint/unified-signatures": "off",
    "@typescript-eslint/member-ordering": "off",
    "eol-last": "off",
    "no-case-declarations": "off",
    "no-self-assign": "off",
    "spaced-comment": "off",
    "no-constant-condition": "off",
    "@typescript-eslint/no-this-alias": "off",
    "prefer-rest-params": "off",
    "prefer-spread": "off",
    "@typescript-eslint/prefer-as-const": "off",
    "@typescript-eslint/prefer-regexp-exec": "off",
    "no-bitwise": "off",
    "@typescript-eslint/no-unused-expressions": "off",
    "no-unused-expressions": "off",
    "no-shadow": "off",
    "@typescript-eslint/no-shadow": "off"
  },
  "overrides": [
    {
      "files": "./config/*.js",
      "rules": {
        "accessor-pairs": "error",
        "array-bracket-newline": "off",
        "array-bracket-spacing": [
          "error",
          "never"
        ],
        "array-callback-return": "off",
        "array-element-newline": "off",
        "arrow-body-style": "off",
        "arrow-parens": "off",
        "arrow-spacing": [
          "error",
          {
            "after": true,
            "before": true
          }
        ],
        "block-scoped-var": "error",
        "block-spacing": "error",
        "brace-style": [
          "error",
          "1tbs"
        ],
        "callback-return": "error",
        "capitalized-comments": "off",
        "class-methods-use-this": "off",
        "comma-dangle": "off",
        "comma-spacing": [
          "error",
          {
            "after": true,
            "before": false
          }
        ],
        "comma-style": [
          "error",
          "last"
        ],
        "complexity": "off",
        "computed-property-spacing": [
          "error",
          "never"
        ],
        "consistent-return": "off",
        "consistent-this": "off",
        "curly": "off",
        "default-case": "off",
        "dot-location": [
          "error",
          "property"
        ],
        "dot-notation": "off",
        "eol-last": "off",
        "eqeqeq": "off",
        "func-call-spacing": "error",
        "func-name-matching": "off",
        "func-names": "off",
        "func-style": "off",
        "function-paren-newline": "off",
        "generator-star-spacing": "error",
        "global-require": "off",
        "guard-for-in": "off",
        "handle-callback-err": "error",
        "id-blacklist": "error",
        "id-length": "off",
        "id-match": "error",
        "implicit-arrow-linebreak": "off",
        "indent": [
          "error",
          4,
          {
            "MemberExpression": "off",
            "SwitchCase": 1
          }
        ],
        "indent-legacy": "off",
        "init-declarations": "off",
        "jsx-quotes": "error",
        "key-spacing": "error",
        "keyword-spacing": "off",
        "line-comment-position": "off",
        "linebreak-style": [
          "error",
          "unix"
        ],
        "lines-around-comment": "off",
        "lines-around-directive": "error",
        "lines-between-class-members": "off",
        "max-classes-per-file": "off",
        "max-depth": "error",
        "max-len": "off",
        "max-lines": "off",
        "max-lines-per-function": "off",
        "max-nested-callbacks": "error",
        "max-params": "off",
        "max-statements": "off",
        "max-statements-per-line": "error",
        "multiline-comment-style": "off",
        "multiline-ternary": [
          "error",
          "always-multiline"
        ],
        "new-parens": "off",
        "newline-after-var": "off",
        "newline-before-return": "off",
        "newline-per-chained-call": "off",
        "no-alert": "error",
        "no-array-constructor": "error",
        "no-await-in-loop": "off",
        "no-bitwise": "off",
        "no-buffer-constructor": "off",
        "no-caller": "error",
        "no-catch-shadow": "error",
        "no-case-declarations": "off",
        "no-confusing-arrow": "off",
        "no-constant-condition": [
          "error",
          {
            "checkLoops": false
          }
        ],
        "no-console": "off",
        "no-continue": "off",
        "no-div-regex": "error",
        "no-duplicate-imports": "off",
        "no-else-return": "off",
        "no-empty": [
          "error",
          {
            "allowEmptyCatch": true
          }
        ],
        "no-empty-function": "off",
        "no-eq-null": "error",
        "no-eval": "error",
        "no-extend-native": "error",
        "no-extra-bind": "error",
        "no-extra-label": "error",
        "no-extra-parens": "off",
        "no-floating-decimal": "error",
        "no-implicit-globals": "error",
        "no-implied-eval": "error",
        "no-inline-comments": "off",
        "no-invalid-this": "off",
        "no-iterator": "error",
        "no-label-var": "error",
        "no-labels": "error",
        "no-lone-blocks": "error",
        "no-lonely-if": "off",
        "no-loop-func": "off",
        "no-magic-numbers": "off",
        "no-mixed-operators": "off",
        "no-mixed-requires": "error",
        "no-multi-assign": "error",
        "no-multi-spaces": "error",
        "no-multi-str": "error",
        "no-multiple-empty-lines": "off",
        "no-native-reassign": "error",
        "no-negated-condition": "off",
        "no-negated-in-lhs": "error",
        "no-nested-ternary": "error",
        "no-new": "error",
        "no-new-func": "error",
        "no-new-object": "error",
        "no-new-require": "error",
        "no-new-wrappers": "error",
        "no-octal-escape": "error",
        "no-param-reassign": "off",
        "no-path-concat": "error",
        "no-plusplus": "off",
        "no-process-env": "off",
        "no-process-exit": "off",
        "no-proto": "off",
        "no-prototype-builtins": "off",
        "no-restricted-globals": "error",
        "no-restricted-imports": "error",
        "no-restricted-modules": "error",
        "no-restricted-properties": "error",
        "no-restricted-syntax": "error",
        "no-return-assign": "off",
        "no-return-await": "off",
        "no-script-url": "error",
        "no-self-compare": "error",
        "no-sequences": "error",
        "no-shadow": "off",
        "no-shadow-restricted-names": "error",
        "no-spaced-func": "error",
        "no-sync": "off",
        "no-tabs": "error",
        "no-template-curly-in-string": "error",
        "no-ternary": "off",
        "no-throw-literal": "error",
        "no-trailing-spaces": [
          "error",
          {
            "ignoreComments": true,
            "skipBlankLines": true
          }
        ],
        "no-undef-init": "error",
        "no-undefined": "off",
        "no-underscore-dangle": "off",
        "no-unmodified-loop-condition": "error",
        "no-unneeded-ternary": "off",
        "no-unused-expressions": "off",
        "no-use-before-define": "off",
        "no-useless-call": "error",
        "no-useless-computed-key": "error",
        "no-useless-concat": "off",
        "no-useless-constructor": "error",
        "no-useless-return": "off",
        "no-var": "error",
        "no-void": "error",
        "no-warning-comments": "off",
        "no-whitespace-before-property": "error",
        "no-with": "error",
        "nonblock-statement-body-position": [
          "error",
          "any"
        ],
        "object-curly-newline": "off",
        "object-curly-spacing": [
          "error",
          "always"
        ],
        "object-property-newline": "error",
        "object-shorthand": "off",
        "one-var": "off",
        "one-var-declaration-per-line": [
          "error",
          "initializations"
        ],
        "operator-assignment": "off",
        "operator-linebreak": [
          "error",
          "after"
        ],
        "padded-blocks": "off",
        "padding-line-between-statements": "error",
        "prefer-arrow-callback": "off",
        "prefer-const": "error",
        "prefer-destructuring": "off",
        "prefer-numeric-literals": "error",
        "prefer-object-spread": "off",
        "prefer-promise-reject-errors": "error",
        "prefer-reflect": "off",
        "prefer-rest-params": "off",
        "prefer-spread": "off",
        "prefer-template": "off",
        "quote-props": "off",
        "quotes": [
          "error",
          "single"
        ],
        "radix": "off",
        "require-atomic-updates": "off",
        "require-await": "off",
        "require-jsdoc": "off",
        "rest-spread-spacing": [
          "error",
          "never"
        ],
        "semi": "error",
        "semi-spacing": [
          "error",
          {
            "after": true,
            "before": false
          }
        ],
        "semi-style": [
          "error",
          "last"
        ],
        "sort-imports": "off",
        "sort-keys": "off",
        "sort-vars": "off",
        "space-before-blocks": "error",
        "space-before-function-paren": "off",
        "space-in-parens": [
          "error",
          "never"
        ],
        "space-infix-ops": "error",
        "space-unary-ops": "error",
        "spaced-comment": "off",
        "strict": "error",
        "switch-colon-spacing": "error",
        "symbol-description": "error",
        "template-curly-spacing": [
          "error",
          "never"
        ],
        "template-tag-spacing": "error",
        "unicode-bom": [
          "error",
          "never"
        ],
        "valid-jsdoc": "off",
        "vars-on-top": "error",
        "wrap-iife": "error",
        "wrap-regex": "off",
        "yield-star-spacing": "error",
        "yoda": "off"
      }
    },
    {
      "files": "*.js",
      "rules": {
        "no-var": "off"
      }
    },
    {
      "files": "*.json",
      "rules": {
        "@typescript-eslint/quotes": "off"
      }
    },
    {
      "files": ".eslintrc.json",
      "rules": {
        "no-dupe-keys": "off"
      }
    },
    {
      "files": "./docs-src/files/logo/js.js",
      "rules": {
        "no-undef": "off"
      }
    },
    {
      "files": "./examples/react/test/e2e.test.js",
      "rules": {
        "no-undef": "off"
      }
    }
  ]
}