tsconfig.json

{
    "compilerOptions": {
        "strict": true,

        "declaration": true,
        "sourceMap": true,

        "module": "commonjs",
        "moduleResolution": "node",
        "esModuleInterop": true,

        "target": "es2021",
        "lib": ["es2021"],

        // Disable automatic inclusion of @types packages
        "types": ["node"],

        // @rollup/plugin-typescript is actually responsible for writing dist files. Using "." as the declarationDir
        // ensures that .d.ts files are co-located with JS files, e.g. `dist/index.js` and `dist/index.d.ts`.
        "declarationDir": ".",

        // @rollup/plugin-typescript ignores this setting (it always emits); we can set it here to
        // facilitate type checking without running the full build
        "noEmit": true
    },

    "exclude": []
}