.eslintrc.json

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint"],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:markdown/recommended",
    "plugin:import/recommended",
    "plugin:import/typescript",
    "prettier"
  ],
  "env": {
    "browser": true,
    "node": false
  },
  "ignorePatterns": [
    "browserstack-browsers.js",
    "web-test-runner.config.js",
    "build",
    "coverage"
  ],
  "overrides": [
    {
      "files": ["*.ts", "*.tsx"],
      "excludedFiles": ["README*/**"],
      "parserOptions": {
        "project": ["./tsconfig.json", "test/tsconfig.json"]
      },
      "extends": [
        "plugin:@typescript-eslint/recommended-requiring-type-checking"
      ],
      "rules": {
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/no-unsafe-member-access": "off",
        "@typescript-eslint/no-unsafe-assignment": "off",
        "@typescript-eslint/no-unsafe-call": "off",
        "@typescript-eslint/no-unsafe-return": "off",
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/explicit-module-boundary-types": "off",
        "@typescript-eslint/ban-types": "off",
        "@typescript-eslint/no-unsafe-argument": "off",
        "@typescript-eslint/no-redundant-type-constituents": "off"
      }
    },
    {
      "files": ["test/unit/**/*.ts", "test/unit/*.tsx"],
      "env": {
        "browser": true,
        "node": true
      }
    },
    {
      "files": ["examples/**/*.js"],
      "rules": {
        "import/no-unresolved": "off",
        "@typescript-eslint/explicit-module-boundary-types": "off"
      }
    },
    {
      "files": ["*.js"],
      "excludedFiles": ["examples/**"],
      "extends": ["plugin:node/recommended"],
      "env": {
        "node": true,
        "browser": false
      },
      "rules": {
        "@typescript-eslint/no-var-requires": "off"
      }
    },
    {
      "files": ["README*md/*.tsx"],
      "rules": {
        "@typescript-eslint/no-unused-vars": "off",
        "import/no-unresolved": "off"
      }
    },
    {
      "files": ["CHANGELOG.md/*"],
      "rules": {
        "@typescript-eslint/no-unused-vars": "off",
        "import/no-unresolved": "off",
        "node/no-missing-import": "off"
      }
    }
  ],
  "rules": {
    "max-statements-per-line": "error",
    "no-var": "error",
    "import/newline-after-import": "error",
    "import/no-default-export": "error"
  }
}