/**
 * Property decorator to normalize boolean-like input values.
 * It converts various representations of truthy and falsy values (e.g., "true", "1", 1) into actual booleans.
 * Helps ensure data consistency when parsing user or external inputs.
 *
 * @returns {PropertyDecorator} - Transforms a property to a boolean.
 */
export declare function BooleanTransform(): PropertyDecorator;