.eslintrc.json

{
  "extends": ["plugin:prettier/recommended", "plugin:astro/recommended"],
  "overrides": [
    {
      "files": ["**/*.mjs", "**/*.cjs"],
      "parserOptions": {
        "sourceType": "module",
        "ecmaVersion": 2015
      },
      "extends": ["plugin:prettier/recommended"],
      "rules": {
        "prettier/prettier": [
          "error",
          {
            "singleQuote": false,
            "endOfLine": "auto"
          }
        ],
        "import/no-extraneous-dependencies": "off", // mjs is only used by Astro for configuration, false positive
        "import/no-unresolved": "off" // Also false positive with mjs file
      }
    },
    {
      "files": ["*.astro"],
      "parser": "astro-eslint-parser",
      "processor": "astro/client-side-ts",
      "parserOptions": {
        "parser": "@typescript-eslint/parser",
        "extraFileExtensions": [".astro"]
      }
    },
    {
      "files": ["**/*.ts", "**/*.tsx"],
      "parser": "@typescript-eslint/parser",
      "extends": ["plugin:@typescript-eslint/recommended"]
    }
  ],

  "rules": {
    "indent": ["error", 2],
    "linebreak-style": "off",
    "quotes": ["error", "double"],
    "semi": ["error", "always"],
    "react/react-in-jsx-scope": "off"
  },
  "plugins": ["prettier"]
}