tsconfig.json

{
    "compilerOptions": {
        "target": "esnext" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
        "module": "CommonJS" /* Specify what module code is generated. */,
        "rootDir": "./src",
        "sourceMap": true /* Create source map files for emitted JavaScript files. */,
        "outDir": "./out" /* Specify an output folder for all emitted files. */,
        "removeComments": true /* Disable emitting comments. */,
        "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. */,
        "declaration": true
    },
    "exclude": ["tests", "out"]
}