/**
 * Port of NamingHelper.php — case conversion utilities.
 */
/** Convert camelCase/PascalCase to snake_case. */
export declare function toSnakeCase(value: string): string;
/**
 * Physical FK column name for an owning-side association property.
 *
 * The convention is `<property_snake>_id`, but a property already named with
 * that suffix IS the column — `table_session_id` is what Laravel's `belongsTo`
 * convention names it and what a legacy table already has. Appending
 * unconditionally produced `table_session_id_id` (issue #149).
 */
export declare function toFkColumnName(propertyName: string): string;
/** Convert any string to PascalCase. */
export declare function toPascalCase(value: string): string;
/** Convert any string to camelCase. */
export declare function toCamelCase(value: string): string;
/**
 * Pluralize a word (simple English rules).
 * Handles common cases: -y → -ies, -s/-sh/-ch/-x/-z → -es, default → -s
 */
export declare function pluralize(value: string): string;
/**
 * Singularize a word (simple English rules — reverse of pluralize).
 */
export declare function singularize(value: string): string;
/** Convert a schema name to a table name (snake_case + pluralized). */
export declare function toTableName(schemaName: string): string;
/**
 * Resolve a displayName from a localized map or string.
 */
export declare function resolveDisplayName(displayName: string | Record<string, string> | null | undefined, locale: string, fallback: string): string;
/** Build expanded column name from property name and suffix. */
export declare function expandedColumnName(propertyName: string, suffix: string): string;