import type { IndexedStorage, LoginStorage } from '@solid/community-server';
/**
 * A {@link LoginStorage} wrapper that keeps the CSS account protection which fits
 * Xpod's account model: **the last login method of an account cannot be deleted**.
 *
 * Unlike CSS `BaseLoginAccountStorage` it deliberately does NOT:
 * - require a login method before creating non-login rows — SP-linked cloud accounts
 *   are created without passwords and receive pods through provision receipts;
 * - expire passwordless accounts — those SP custody accounts are legitimate and permanent.
 *
 * @param storage - The underlying IndexedStorage holding the actual rows.
 */
export declare class LoginMethodGuardStorage implements LoginStorage<any> {
    private readonly logger;
    private readonly storage;
    private readonly loginTypes;
    private readonly accountKeys;
    constructor(storage: IndexedStorage<any>);
    defineType(type: string, description: any, isLogin: boolean): Promise<void>;
    createIndex(type: string, key: string): Promise<void>;
    create(type: string, value: any): Promise<any>;
    has(type: string, id: string): Promise<boolean>;
    get(type: string, id: string): Promise<any | undefined>;
    find(type: string, query: any): Promise<any[]>;
    findIds(type: string, query: any): Promise<string[]>;
    set(type: string, value: any): Promise<void>;
    setField(type: string, id: string, key: string, value: any): Promise<void>;
    delete(type: string, id: string): Promise<void>;
    entries(type: string): AsyncIterableIterator<any>;
    private assertNotLastLoginMethod;
}