tsconfig.json

{
  "compilerOptions": {
    "target": "es2016", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */

    "module": "Node16", /* Specify what module code is generated. */
    "moduleResolution": "Node16", /* Specify how TypeScript looks up a file from a given module specifier. */
    "types": ["node"], /* Specify type package names to be included without being referenced in a source file. */

    "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
    "outDir": "./lib", /* Specify an output folder for all emitted files. */
    "downlevelIteration": false, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
    "declarationDir": "./types", /* Specify the output directory for generated declaration files. */

    "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */
    "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */
    "strict": true, /* Enable all strict type-checking options. */
    "skipLibCheck": true /* Skip type checking all .d.ts files. */
  },
  "include": [
    "src/**/*"
  ]
}