import { type KeyPair } from './utils';
declare const TABLES: {
    readonly NONCE: "nonce";
    readonly KEYPAIR: "keypair";
};
type Table = (typeof TABLES)[keyof typeof TABLES];
export declare class DpopStorage {
    protected readonly clientId: string;
    protected dbHandle: IDBDatabase | undefined;
    constructor(clientId: string);
    protected getVersion(): number;
    protected createDbHandle(): Promise<IDBDatabase>;
    protected getDbHandle(): Promise<IDBDatabase>;
    protected executeDbRequest<T = unknown>(table: string, mode: IDBTransactionMode, requestFactory: (table: IDBObjectStore) => IDBRequest<T>): Promise<T>;
    protected buildKey(id?: string): string;
    setNonce(nonce: string, id?: string): Promise<void>;
    setKeyPair(keyPair: KeyPair): Promise<void>;
    protected save(table: Table, key: IDBValidKey, obj: unknown): Promise<void>;
    findNonce(id?: string): Promise<string | undefined>;
    findKeyPair(): Promise<KeyPair | undefined>;
    protected find<T = unknown>(table: Table, key: IDBValidKey): Promise<T | undefined>;
    protected deleteBy(table: Table, predicate: (key: IDBValidKey) => boolean): Promise<void>;
    protected deleteByClientId(table: Table, clientId: string): Promise<void>;
    clearNonces(): Promise<void>;
    clearKeyPairs(): Promise<void>;
}
export {};