.eslintrc.js

module.exports = {
  root: true,

  env: {
    node: true,
  },

  parser: "@typescript-eslint/parser",

  parserOptions: {
    ecmaVersion: 2020,
  },

  plugins: ["@typescript-eslint"],

  extends: [],

  ignorePatterns: ["dist/**", "node_modules/**", "package-lock.json"],

  rules: {
    "arrow-parens": ["error", "as-needed"],
    "comma-dangle": ["error", "always-multiline"],
    "constructor-super": "error",
    "for-direction": "error",
    "getter-return": "error",
    "indent": ["error", 2],
    "keyword-spacing": "error",
    "linebreak-style": ["error", "unix"],
    "max-len": ["error", { "code": 120 }],
    "no-async-promise-executor": "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",
    "no-control-regex": "error",
    "no-debugger": "error",
    "no-delete-var": "error",
    "no-dupe-args": "error",
    "no-dupe-class-members": "error",
    "no-dupe-else-if": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-empty": "error",
    "no-empty-character-class": "error",
    "no-empty-pattern": "error",
    "no-ex-assign": "error",
    "no-extra-boolean-cast": "error",
    "no-extra-semi": "error",
    "no-fallthrough": "error",
    "no-func-assign": "error",
    "no-global-assign": "error",
    "no-import-assign": "error",
    "no-inner-declarations": "error",
    "no-invalid-regexp": "error",
    "no-irregular-whitespace": "error",
    "no-misleading-character-class": "error",
    "no-mixed-spaces-and-tabs": "error",
    "no-new-symbol": "error",
    "no-obj-calls": "error",
    "no-octal": "error",
    "no-prototype-builtins": "error",
    "no-redeclare": "error",
    "no-regex-spaces": "error",
    "no-self-assign": "error",
    "no-setter-return": "error",
    "no-shadow-restricted-names": "error",
    "no-sparse-arrays": "error",
    "no-this-before-super": "error",
    "no-undef": "error",
    "no-unexpected-multiline": "error",
    "no-unreachable": "error",
    "no-unsafe-finally": "error",
    "no-unsafe-negation": "error",
    "no-unused-labels": "error",
    "no-unused-vars": "error",
    "no-useless-catch": "error",
    "no-useless-escape": "error",
    "no-with": "error",
    "object-curly-spacing": ["error", "always"],
    "quotes": ["error", "double"],
    "require-yield": "error",
    "semi": ["error", "always"],
    "space-before-function-paren": ["error", { "anonymous": "always", "named": "never", "asyncArrow": "always" }],
    "use-isnan": "error",
    "valid-typeof": "error",
  },

  overrides: [
    {
      files: ["*.json"],
      rules: {
        "comma-dangle": "off",
        "semi": "off",
      },
    },
    {
      files: ["*.ts", "*.tsx"],
      rules: {
        "comma-dangle": "off",
        "constructor-super": "off",
        "getter-return": "off",
        "no-array-constructor": "off",
        "no-const-assign": "off",
        "no-dupe-args": "off",
        "no-dupe-class-members": "off",
        "no-dupe-keys": "off",
        "no-empty-function": "off",
        "no-extra-semi": "off",
        "no-func-assign": "off",
        "no-import-assign": "off",
        "no-new-symbol": "off",
        "no-obj-calls": "off",
        "no-redeclare": "off",
        "no-setter-return": "off",
        "no-this-before-super": "off",
        "no-undef": "off",
        "no-unreachable": "off",
        "no-unsafe-negation": "off",
        "no-unused-vars": "off",
        "no-var": "error",
        "prefer-const": "error",
        "prefer-rest-params": "error",
        "prefer-spread": "error",
        "space-before-function-paren": "off",
        "valid-typeof": "off",
        "@typescript-eslint/adjacent-overload-signatures": "error",
        "@typescript-eslint/ban-ts-comment": "error",
        "@typescript-eslint/ban-types": "error",
        "@typescript-eslint/comma-dangle": ["error", "always-multiline"],
        "@typescript-eslint/explicit-module-boundary-types": "error",
        "@typescript-eslint/no-array-constructor": "error",
        "@typescript-eslint/no-empty-function": "error",
        "@typescript-eslint/no-empty-interface": "error",
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/no-extra-non-null-assertion": "error",
        "@typescript-eslint/no-extra-semi": "error",
        "@typescript-eslint/no-inferrable-types": "error",
        "@typescript-eslint/no-misused-new": "error",
        "@typescript-eslint/no-namespace": "error",
        "@typescript-eslint/no-non-null-asserted-optional-chain": "error",
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/no-this-alias": "error",
        "@typescript-eslint/no-var-requires": "error",
        "@typescript-eslint/no-unused-vars": ["warn", { varsIgnorePattern: "_", argsIgnorePattern: "^_" }],
        "@typescript-eslint/prefer-as-const": "error",
        "@typescript-eslint/prefer-namespace-keyword": "error",
        "@typescript-eslint/space-before-function-paren": ["error", {
          "anonymous": "always",
          "named": "never",
          "asyncArrow": "always",
        }],
        "@typescript-eslint/triple-slash-reference": "error",
      },
    },
    {
      files: ["**/*.test.{j,t}s?(x)"],
      env: {
        jest: true,
      },
    },
  ],
};