/**
 * Header alias mapping — maps common size guide column headers
 * to standardised measurement field keys.
 */
export declare const HEADER_ALIASES: Record<string, string>;
/** Human-readable labels for each measurement key */
export declare const FIELD_LABELS: Record<string, string>;
/** Placeholder values shown in form inputs */
export declare const FIELD_PLACEHOLDERS: Record<string, string>;
/** Regex to detect size label strings (S/M/L/XL or numeric 28-52) */
export declare const SIZE_LABEL_PATTERN: RegExp;
/** Keys that are shoe-related */
export declare const SHOE_FIELD_KEYS: Set<string>;