import type { ActionEntry } from "../agent/production-agent.js";
import { isTextLikeFilename, isTextLikeMimeType, type TextAttachmentStorage } from "../file-upload/attachment-text.js";
export { isTextLikeFilename, isTextLikeMimeType };
/** @internal exported for unit tests only */
export declare function clearAttachmentRereadCache(): void;
/** @internal exported for unit tests only */
export declare function attachmentRereadCacheStats(): {
    entries: number;
    chars: number;
};
export declare function persistTextAttachmentsAsResources(opts: {
    attachments: Array<{
        type?: string;
        name?: string;
        contentType?: string;
        displayOnly?: boolean;
        text?: string;
        data?: string;
        url?: string;
        uploadProvider?: string;
    }>;
    threadId: string;
    ownerEmail: string | null | undefined;
}): Promise<Map<number, TextAttachmentStorage>>;
export declare function createCoreAttachmentActionEntries(): Record<string, ActionEntry>;