import { IDataRepository } from "./contracts";
export declare class DataRepository implements IDataRepository {
    #private;
    all(): object;
    first<T>(): T;
    last<T>(): T;
    keys(): string[];
    values<T>(): T[];
    get<T>(key: string, defaultValue?: T | undefined): T | undefined;
    set(key: string, value: unknown): void;
    fill(entries: object): void;
    has(key: string): boolean;
    missing(key: string): boolean;
    forget(key: string): void;
    forgetIndex(key: string, index: number): void;
    flush(): void;
    count(): number;
    snapshot(): void;
    restore(): void;
    toJSON(): string;
}