/**
 * Transforms a database column name or object key into a human-readable display label.
 * Strips relational ID suffixes, breaks casing boundaries, and capitalizes the result.
 * @example
 * ```ts
 * nctDbFieldToLabel('user_profile_id') // Returns: "User Profile"
 * nctDbFieldToLabel('createdAt')       // Returns: "Created At"
 * ```
 * @param {string} str - The raw database field name or object key to format.
 * @returns {string} The formatted, reader-friendly label string.
 * @internal
 */
export declare const nctDbFieldToLabel: (str: string) => string;