/**
 * IMAP provider — implements MailProvider using CompatImapClient + a caller-
 * supplied TransportFactory. Single source of truth for IMAP-protocol-side
 * code shared by desktop (Node) and Android (WebView).
 *
 * SOURCE OF TRUTH: this file is the single canonical IMAP provider for mailx.
 * Was previously `mailx-store-web/imap-web-provider.ts` (Android-only, with a
 * BridgeTransport default). Moved here without the platform-specific default
 * — callers inject the right transport at construction:
 *   - Desktop:  () => new NodeTcpTransport()    (from @bobfrankston/node-tcp-transport)
 *   - Android:  () => new BridgeTcpTransport()  (from @bobfrankston/tcp-transport)
 *
 * Includes automatic retry on broken pipe / connection errors: if an operation
 * fails with a connection-related error, we discard the client and retry once
 * with a fresh connection.
 */
import { type ImapClientConfig } from "@bobfrankston/iflow-direct";
import type { TransportFactory } from "@bobfrankston/tcp-transport";
import type { MailProvider, ProviderFolder, ProviderMessage, FetchOptions } from "./types.js";
export declare class ImapProvider implements MailProvider {
    private client;
    private config;
    private transportFactory;
    private specialFolders;
    private folderListCache;
    constructor(config: ImapClientConfig, transportFactory: TransportFactory);
    /** Discard the current client + recreate. Called after a broken-pipe error. */
    private reconnect;
    /** Run an operation, retrying once on connection error with a fresh client. */
    private withRetry;
    listFolders(): Promise<ProviderFolder[]>;
    fetchSince(folder: string, sinceUid: number, options?: FetchOptions): Promise<ProviderMessage[]>;
    fetchByDate(folder: string, since: Date, before: Date, options?: FetchOptions, onChunk?: (msgs: ProviderMessage[]) => void): Promise<ProviderMessage[]>;
    fetchByUids(folder: string, uids: number[], options?: FetchOptions): Promise<ProviderMessage[]>;
    fetchOne(folder: string, uid: number, options?: FetchOptions): Promise<ProviderMessage | null>;
    getUids(folder: string): Promise<number[]>;
    close(): Promise<void>;
}
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