tsconfig.json

{
  "files": ["src/index.ts"],
  "compilerOptions": {
    "target": "es2015",
    "module": "CommonJS",
    "outDir": "./dist",
    "noEmit": false,
    "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. */,
    "strictNullChecks": true,
    "skipLibCheck": true /* Skip type checking all .d.ts files. */,
    "declaration": true
  }
}