/**
 * Interface satisfied by both the in-memory NotionTokenStore (stdio / local
 * single-process) and the KV write-through KvNotionTokenStore (Cloudflare
 * deploy), so the HTTP transport can select either without branching on the
 * concrete type. `save`/`clear` allow an async return because the KV variant
 * writes through to Workers KV; the in-memory store satisfies it synchronously.
 */
export interface NotionTokenStoreLike {
    save(sub: string, accessToken: string): Promise<void> | void;
    /**
     * Synchronous read of the in-memory cache only (hot path: the Notion client
     * factory runs per tool invocation). The durable KV variant returns the
     * cached value here; a cold cache after container recreate is warmed by
     * ``getAsync`` (called once per request in the HTTP transport's authScope).
     */
    get(sub: string): string | undefined;
    /**
     * Read through to the durable layer, warming the cache on a hit. The
     * in-memory store has no durable layer so this resolves to the cached value.
     * The KV store loads + decrypts the per-(plugin, sub) blob from Workers KV,
     * which is what makes a token survive container delete+recreate.
     */
    getAsync(sub: string): Promise<string | undefined>;
    clear(sub: string): Promise<void> | void;
    /**
     * Optional durable-store readiness probe (KV deploy). When present, the HTTP
     * transport calls it at startup so a broken container -> Worker outbound path
     * surfaces in deploy logs instead of silently dropping the first token write.
     */
    ready?(): Promise<void>;
}
/**
 * In-process per-user Notion access token store, keyed by JWT subject.
 *
 * Populated by the delegated OAuth `onTokenReceived` callback and consumed
 * by the Notion client factory on each MCP tool invocation. Tokens are
 * ephemeral (process lifetime only); refresh is handled by re-running the
 * delegated OAuth flow when a call returns 401.
 */
export declare class NotionTokenStore {
    private tokens;
    save(sub: string, accessToken: string): void;
    get(sub: string): string | undefined;
    getAsync(sub: string): Promise<string | undefined>;
    clear(sub: string): void;
}
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