.eslintrc.json

{
  "root": true,
  "env": {
    "node": true,
    "jest": true
  },
  "plugins": ["@typescript-eslint", "jest"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.json"
  },
  "extends": [
    "airbnb-typescript/base",
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "plugin:jest/recommended",
    "prettier"
  ],
  "rules": {
    "no-prototype-builtins": "off",
    "import/prefer-default-export": "off",
    "import/no-default-export": "error",
    "no-use-before-define": "off",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/require-await": "off",
    "@typescript-eslint/no-floating-promises": "off",
    "@typescript-eslint/no-use-before-define": [
      "error",
      {
        "functions": false,
        "classes": true,
        "variables": true,
        "typedefs": true
      }
    ]
  },
  "overrides": [
    {
      "files": ["*.js"],
      "rules": {
        "@typescript-eslint/no-var-requires": "off",
        "@typescript-eslint/no-unsafe-assignment": "off",
        "@typescript-eslint/no-unsafe-member-access": "off",
        "@typescript-eslint/no-unsafe-call": "off"
      }
    }
  ]
}