import { UidsAndValues } from "./types";
export declare class DbInterface {
    private readonly _callbacks;
    constructor();
    get delete(): (uids: Uint8Array[]) => Promise<void> | undefined;
    set delete(callback: (uids: Uint8Array[]) => Promise<void> | undefined);
    get fetch(): (uids: Uint8Array[]) => Promise<Array<{
        uid: Uint8Array;
        value: Uint8Array;
    }>> | undefined;
    set fetch(callback: (uids: Uint8Array[]) => Promise<Array<{
        uid: Uint8Array;
        value: Uint8Array;
    }>> | undefined);
    get upsert(): (oldValues: UidsAndValues, newValues: UidsAndValues) => Promise<UidsAndValues> | undefined;
    set upsert(callback: (oldValues: UidsAndValues, newValues: UidsAndValues) => Promise<UidsAndValues> | undefined);
    get insert(): (uidsAndValues: UidsAndValues) => Promise<void> | undefined;
    set insert(callback: (uidsAndValues: UidsAndValues) => Promise<void> | undefined);
}
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