import type { RuleModule } from '../../types';
/**
 * Validate that all packages in a lockfile are from allowed hosts.
 * Prevents supply chain attacks where an attacker modifies the lockfile
 * to point packages to malicious registries.
 *
 * Options:
 * - allowedHosts: Array of allowed hostnames or aliases ('npm', 'yarn', 'verdaccio')
 * - emptyHostname: Whether to allow packages with empty/missing resolved URLs (default: true)
 *
 * Example config:
 * ```ts
 * pluginRules: {
 *   'lockfile/validate-host': ['error', { allowedHosts: ['npm', 'yarn'] }]
 * }
 * ```
 */
export declare const validateHost: RuleModule;