.eslintrc.json

{
  "env": {
    "browser": false,
    "node": true,
    "es6": true
  },
  "extends": [
    "airbnb-base",
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:prettier/recommended"
  ],
  "plugins": [
    "@typescript-eslint"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "sourceType": "module"
  },
  "rules": {
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/array-type": [
      "error",
      {
        "default": "array-simple"
      }
    ],
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        "js": "never",
        "jsx": "never",
        "ts": "never",
        "tsx": "never"
      }
    ]
  },
  "settings": {
    "import/extensions": [
      "error",
      "ignorePackages",
      {
        "js": "never",
        "jsx": "never",
        "ts": "never",
        "tsx": "never"
      }
    ],
    "import/resolver": {
      "typescript": {} // this loads <rootdir>/tsconfig.json to eslint
    }
  }
}