shareable-configs/packages/prettier/prettier.json

{
  "$schema": "https://json.schemastore.org/prettierrc.json",
  "overrides": [
    {
      "files": "**/*.astro",
      "options": {
        "parser": "astro",
        "plugins": [
          "prettier-plugin-astro"
        ]
      }
    }
  ],
  "singleQuote": false
}