import { vi } from "vitest";
type DraftPreviewMode = "message" | "draft";
export type TestDraftStream = {
    update: ReturnType<typeof vi.fn<(text: string) => void>>;
    flush: ReturnType<typeof vi.fn<() => Promise<void>>>;
    messageId: ReturnType<typeof vi.fn<() => number | undefined>>;
    previewMode: ReturnType<typeof vi.fn<() => DraftPreviewMode>>;
    previewRevision: ReturnType<typeof vi.fn<() => number>>;
    lastDeliveredText: ReturnType<typeof vi.fn<() => string>>;
    clear: ReturnType<typeof vi.fn<() => Promise<void>>>;
    stop: ReturnType<typeof vi.fn<() => Promise<void>>>;
    materialize: ReturnType<typeof vi.fn<() => Promise<number | undefined>>>;
    forceNewMessage: ReturnType<typeof vi.fn<() => void>>;
    sendMayHaveLanded: ReturnType<typeof vi.fn<() => boolean>>;
    setMessageId: (value: number | undefined) => void;
};
export declare function createTestDraftStream(params?: {
    messageId?: number;
    previewMode?: DraftPreviewMode;
    onUpdate?: (text: string) => void;
    onStop?: () => void | Promise<void>;
    clearMessageIdOnForceNew?: boolean;
}): TestDraftStream;
export declare function createSequencedTestDraftStream(startMessageId?: number): TestDraftStream;
export {};