import type { RuleModule } from '../../types';
/**
 * Validate that all packages use allowed URL schemes/protocols.
 * Prevents attacks using unexpected schemes like file://, data://,
 * git+http://, or other protocols that might bypass security policies.
 *
 * Options:
 * - allowedSchemes: Array of allowed URL schemes (default: ['https:', 'git+https:', 'git+ssh:'])
 *
 * Example config:
 * ```ts
 * pluginRules: {
 *   'lockfile/validate-scheme': ['error', { allowedSchemes: ['https:', 'git+ssh:'] }]
 * }
 * ```
 */
export declare const validateScheme: RuleModule;