.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/strict-type-checked",
    "plugin:@typescript-eslint/stylistic-type-checked",
    "plugin:import/recommended",
    "plugin:import/typescript",
    "plugin:perfectionist/recommended-natural",
    "prettier"
  ],
  "overrides": [
    {
      "extends": [
        "plugin:jest/recommended",
        "plugin:jest/style",
        "plugin:jest-formatting/strict"
      ],
      "files": ["**/*.{spec,test}.{js,ts}"],
      "plugins": ["jest", "jest-formatting"],
      "rules": {
        "@typescript-eslint/unbound-method": "off"
      }
    }
  ],
  "parserOptions": {
    "project": "./tsconfig.json"
  },
  "plugins": ["@typescript-eslint", "import", "perfectionist"],
  "rules": {
    "@typescript-eslint/consistent-type-exports": "error",
    "@typescript-eslint/consistent-type-imports": "error",
    "@typescript-eslint/naming-convention": [
      "error",
      {
        "format": ["camelCase", "UPPER_CASE", "PascalCase", "snake_case"],
        "leadingUnderscore": "allow",
        "selector": "variable"
      }
    ],
    "@typescript-eslint/no-import-type-side-effects": "error",
    "@typescript-eslint/no-unsafe-argument": "off",
    "@typescript-eslint/no-unsafe-assignment": "off",
    "@typescript-eslint/no-unsafe-member-access": "off",
    "@typescript-eslint/no-unsafe-return": "off",
    "@typescript-eslint/no-unused-vars": "warn",
    "no-console": ["warn", { "allow": ["error"] }]
  },
  "settings": {
    "import/resolver": {
      "node": {
        "extensions": [".js", ".jsx", ".ts", ".tsx"]
      },
      "typescript": true
    }
  }
}