import type { CodeMetadata, LegacyCodeMetadata } from './types.js';
/**
 * Encodes structured component metadata into a stable, base64url-safe string
 * suitable for embedding in a KiCad "Code" property.
 *
 * The encoded string contains only [A-Za-z0-9_-] characters plus the "typecad:v1:" prefix,
 * which means it survives KiCad's string handling without any quoting issues.
 */
export declare function encodeCodeMetadata(metadata: CodeMetadata): string;
/**
 * Decodes a KiCad Code property value into structured metadata.
 * Tries the new format first, then falls back to the legacy single-quote format.
 *
 * Returns null if the value is empty or cannot be parsed in any format.
 */
export declare function decodeCodeMetadata(rawValue: string | null | undefined): CodeMetadata | LegacyCodeMetadata | null;
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