import { type MapDescriptorAssertionOptions } from './assert';
import { type AccessorValueAssertion } from './assertion';
/**
 * Creates a property decorator that validates values using a custom assertion function
 * before allowing them to be set on the property.
 *
 * @param assertion - Function that returns true if the value is valid
 * @param options - Optional assertion options including custom error message and value mapping
 * @returns A property descriptor interceptor that enforces the assertion on the setter
 */
export declare function Assert<T>(assertion: AccessorValueAssertion<T>, options?: MapDescriptorAssertionOptions<T>): (target: object, propertyKey: string, descriptor: TypedPropertyDescriptor<T>) => void;