import { Collection } from 'mongodb';
import { AtomStore, Atom, AtomId } from '@casual-simulation/causal-trees/core2';
/**
 * Defines a class that implements an AtomStore for MongoDB.
 */
export declare class MongoDBAtomStore implements AtomStore {
    private _atomsCollection;
    constructor(atomsCollection: Collection);
    init(): Promise<void>;
    add<T>(atoms: Atom<T>[]): Promise<void>;
    findByCause(cause: AtomId): Promise<Atom<any>[]>;
    findByHashes(hashes: string[]): Promise<Atom<any>[]>;
}
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