.eslintrc

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint", "prettier"],
  "parserOptions": {
    "project": ["./src/tsconfig.json", "./test/tsconfig.json"]
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "prettier"
  ],
  "overrides": [
    {
      "files": ["test/**/*.ts"],
      "env": {
        "node": true
      }
    }
  ],
  "rules": {
    "prettier/prettier": ["error"],
    "@typescript-eslint/explicit-function-return-type": ["off"],
    "@typescript-eslint/no-explicit-any": ["off"],
    "@typescript-eslint/no-use-before-define": ["off"],
    "@typescript-eslint/restrict-template-expressions": ["off"],
    "@typescript-eslint/ban-types": [
      "error",
      {
        "extendDefaults": false,
        "types": {
          "String": {
            "message": "Use string instead",
            "fixWith": "string"
          },
          "Boolean": {
            "message": "Use boolean instead",
            "fixWith": "boolean"
          },
          "Number": {
            "message": "Use number instead",
            "fixWith": "number"
          },
          "Symbol": {
            "message": "Use symbol instead",
            "fixWith": "symbol"
          },

          // object typing
          "Object": {
            "message": "The `Object` type actually means \"any non-nullish value\", so it is marginally better than `unknown`.\n- If you want a type meaning \"any object\", you probably want `Record<string, unknown>` instead.\n- If you want a type meaning \"any value\", you probably want `unknown` instead."
          },
          "object": {
            "message": "The `object` type is currently hard to use ([see this issue](https://github.com/microsoft/TypeScript/issues/21732)).\nConsider using `Record<string, unknown>` instead, as it allows you to more easily inspect and use the keys."
          }
        }
      }
    ]
  }
}