import { ModelDefinition } from '@graphback/core';
import { Db } from "mongodb";
export declare function getDeltaTableName(tableName: string): string;
/**
 * Provides the ability to insert delta snapshots into MongoDB collections
 * and get base for conflict resolution
 */
export declare class MongoDeltaSource<Type = any> {
    protected db: Db;
    protected collectionName: string;
    protected deltaTTL: number;
    constructor(model: ModelDefinition, db: Db, deltaTTL: number);
    insertDiff(updatedDocument: Type): Promise<void>;
    findBaseForConflicts(updateDocument: any): Promise<Type>;
}
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