import { IEntityHashes } from './entities/IEntityHashes';
import { Entity } from './Entity';
import { Mongo } from '../mongo/Mongo';
import { EntityType } from './EntityType';
/**
 * Represents an implementation of {IEntityHashes}.
 */
export declare class EntityHashes implements IEntityHashes {
    private _entityType;
    private _mongo;
    private _map;
    /**
     * Initializes a new instance of {EntityHashes}.
     * @param {EntityType} _entityType The type of entity.
     * @param {Mongo} _mongo Mong wrapper.
     */
    constructor(_entityType: EntityType, _mongo: Mongo);
    /** @inheritdoc */
    initialize(): Promise<void>;
    /** @inheritdoc */
    exists(entity: Entity): boolean;
    /** @inheritdoc */
    hasChanged(entity: Entity): boolean;
    /** @inheritdoc */
    update(entity: Entity): Promise<void>;
    private collection;
}
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