/**
 * Custom type mapper for bidirectional data transformation
 */
export interface TypeMapper<TData = any, TDriver = any> {
    /**
     * Convert from application data type to database driver type
     */
    toDriver(value: TData | null | undefined): TDriver | null;
    /**
     * Convert from database driver type to application data type
     */
    fromDriver(value: TDriver | null | undefined): TData | null;
    /**
     * Optional: Get the PostgreSQL data type for schema generation
     */
    dataType?: () => string;
}
/**
 * Custom type definition with mapper
 */
export interface CustomTypeDefinition<TData = any, TDriver = any> {
    dataType: () => string;
    toDriver: (value: TData | null | undefined) => TDriver | null;
    fromDriver: (value: TDriver | null | undefined) => TData | null;
}
/**
 * Create a custom type mapper
 */
export declare function customType<T extends {
    data: any;
    driverData?: any;
}>(config: CustomTypeDefinition<T['data'], T['driverData'] extends never ? T['data'] : T['driverData']>): TypeMapper<T['data'], T['driverData'] extends never ? T['data'] : T['driverData']>;
/**
 * Identity mapper (no transformation)
 */
export declare const identityMapper: TypeMapper;
/**
 * Apply a mapper to a value (toDriver direction)
 */
export declare function applyToDriver<TData, TDriver>(mapper: TypeMapper<TData, TDriver> | undefined, value: TData | null | undefined): TDriver | null;
/**
 * Apply a mapper to a value (fromDriver direction)
 */
export declare function applyFromDriver<TData, TDriver>(mapper: TypeMapper<TData, TDriver> | undefined, value: TDriver | null | undefined): TData | null;
/**
 * Apply mapper to array of values
 */
export declare function applyFromDriverArray<TData, TDriver>(mapper: TypeMapper<TData, TDriver> | undefined, values: (TDriver | null)[]): (TData | null)[];
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