tsconfig.json

{
    "include": ["packages"],
    "compilerOptions": {
        // Enable top-level await, and other modern ESM features.
        "target": "ESNext",
        "module": "ESNext",
        // Enable node-style module resolution, for things like npm package imports.
        "moduleResolution": "node",
        // Enable JSON imports.
        "resolveJsonModule": true,
        // Enable stricter transpilation for better output.
        "isolatedModules": true,
        // Astro will directly run your TypeScript code, no transpilation needed.
        "noEmit": true,
        // Enable strict type checking.
        "strict": true,
        // Error when a value import is only used as a type.
        "importsNotUsedAsValues": "error",
        "allowJs": true,
        "declaration": true,
        "esModuleInterop": true,
        "forceConsistentCasingInFileNames": true,
        "outDir": "./dist",
        "skipLibCheck": true
    },
    "exclude": ["node_modules"]
}