export declare function hson_metadata_transit_name(markupName: string): string;
export declare function decode_hson_metadata_transit_name(transitName: string): string | undefined;
export declare function is_hson_metadata_transit_name(name: string): boolean;
/**
 * Encode every syntactic `hson:<candidate>` attribute before XML parsing.
 * Exact registry admission intentionally happens after DOM enumeration.
 */
export declare function encode_hson_metadata_transit(src: string): string;
/**
 * Restore metadata transit spellings produced internally before an XML-shaped
 * sanitizer pass. Caller-authored transit names must already have been
 * rejected by the source-aware attribute boundary.
 */
export declare function decode_hson_metadata_transit(src: string): string;
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