tsconfig.json

{
  "compilerOptions": {
    /* Base Options: */
    "esModuleInterop": true,
    "skipLibCheck": true,
    "target": "ES2017", // Target modern browsers, adjust if needed
    "allowJs": true,
    "resolveJsonModule": true,
    "moduleDetection": "force",
    "isolatedModules": true,

    /* Strictness */
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "noImplicitAny": true,

    /* Bundled projects */
    // Be more explicit with libs to ensure Promise, AsyncIterable, string methods, and DOM are included
    "lib": ["ES2018", "DOM", "DOM.Iterable"],
    "module": "ESNext", // Let Rollup handle final module format
    "moduleResolution": "bundler", // Or "node" if preferred
    "sourceMap": true, // Generate source maps for debugging
    "outDir": "dist", // Output directory (though Rollup controls final output)
    "declaration": true, // Generate .d.ts files
    "declarationDir": "dist/types", // Output directory for .d.ts files
    "declarationMap": true, // Generate source maps for .d.ts files
    "types": ["vitest/globals", "node"], // Add vitest globals and node types

    /* Alias */
    // "baseUrl": ".", // Optional: for path aliases
    // "paths": {
    //   "@/*": ["./src/*"]
    // }
  },
  "include": ["src/**/*.ts", "tests/**/*.ts", "vitest.config.ts"], // Include tests and vitest config
  "exclude": ["node_modules", "dist"] // Which files to exclude
}