import 'reflect-metadata';
import { ChroniclePropertyDecorator } from '../../types/propertyDecoratorMetadata.js';
/** Metadata stored by the decrement property decorator. */
export interface DecrementMetadata {
    /** The event constructor that triggers the decrement. */
    readonly eventType: Function;
    /** Optional constant key. All events will update the same read model instance. */
    readonly constantKey?: string;
}
/**
 * Property decorator that decrements the decorated read model property each time the specified event occurs.
 * @param eventType - The event constructor.
 * @param constantKey - Optional constant key value.
 * @returns A property decorator.
 */
export declare function decrement(eventType: Function, constantKey?: string): ChroniclePropertyDecorator;
/**
 * Retrieves all decrement metadata stored on the given property.
 * @param target - The class prototype.
 * @param propertyKey - The property name.
 * @returns An array of decrement metadata entries.
 */
export declare function getDecrementMetadata(target: object, propertyKey: string): DecrementMetadata[];
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