astro/packages/astro-rss/tsconfig.json

{
  "extends": "../../tsconfig.base.json",
  "include": ["src"],
  "compilerOptions": {
    "allowJs": true,
    "module": "ES2020",
    "outDir": "./dist",
    "target": "ES2020",
    "strictNullChecks": true
  }
}