/**
 * URI Validation Utilities
 *
 * Helper functions for validating URIs in different formats:
 * - URLs (http://, https://)
 * - URNs (urn:)
 * - OIDs (oid:)
 * - UUIDs (uuid:, urn:uuid:)
 * - Relative references
 */
export interface UriValidationResult {
    isValid: boolean;
    type: 'url' | 'urn' | 'oid' | 'uuid' | 'relative' | 'unknown';
    reason?: string;
}
/**
 * Validate URI format and determine type
 */
export declare function validateUriFormat(uri: string): UriValidationResult;
/**
 * Check if URI looks like a FHIR reference
 * Matches patterns like: Patient/123, Organization/xyz, etc.
 */
export declare function looksLikeReference(uri: string): boolean;
/**
 * Helper method to validate URLs
 */
export declare function isValidUrl(url: string): boolean;
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