/**
 * @file NODE_AUTH_TOKEN environment variable getter. Exports
 *   `getNodeAuthToken()`, returning the value of `NODE_AUTH_TOKEN` used to
 *   authenticate against Node.js package registries.
 */
/**
 * Returns the value of the NODE_AUTH_TOKEN environment variable.
 *
 * @example
 *   ;```typescript
 *   import { getNodeAuthToken } from '@socketsecurity/lib/env/node-auth-token'
 *
 *   const token = getNodeAuthToken()
 *   // e.g. 'npm_abc123...' or undefined
 *   ```
 *
 * @returns The Node.js registry auth token, or `undefined` if not set
 */
export declare function getNodeAuthToken(): string | undefined;
