import { type MutationHint } from "../chat/types.js";
import { type DrizzleExecutor } from "../drizzle.js";
import { type DraftSummary } from "./types.js";
/**
 * Replaces one actor-owned row in `drafts`, retaining empty text as a deletion tombstone, and records its personal sync invalidation atomically.
 * The timestamped tombstone gives every node the same last-write-wins boundary for clearing text as for replacing it.
 */
export declare function draftUpdate(executor: DrizzleExecutor, input: {
    actorUserId: string;
    chatId: string;
    text: string;
}): Promise<{
    draft: DraftSummary;
    hint: MutationHint;
}>;
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