import type OpenAI from "openai";
import type { ImageGenCompletedEvent } from "openai/resources/images";
import type { StreamImage, StreamImageResult } from "@use-crux/core";
import { type OpenAIImageStreamExtra, type OpenAIImageStreamInput } from "./image-streaming-options";
export type { OpenAIImageStreamExtra } from "./image-streaming-options";
/** Payload-free metadata copied from the exact OpenAI terminal event. */
export type OpenAIImageStreamMetadata = Omit<ImageGenCompletedEvent, "b64_json" | "type">;
/** Exact completed result of an OpenAI Images API stream. */
export type OpenAIStreamImageResult = StreamImageResult<ImageGenCompletedEvent, OpenAIImageStreamMetadata, never>;
/**
 * Genuine single-output OpenAI image stream attached to a bound adapter.
 *
 * Complete partial images replace the prior preview for `outputIndex: 0`.
 * Enforcing output-media Safety evaluates each complete preview before
 * publication and releases final media only after terminal validation. Every
 * `fullStream` reader replays the same in-memory events; returning from one
 * reader only detaches it, while `cancel()` aborts the operation. The first
 * published event commits routing. The final event and `completion.image`
 * share the same guarded asset, and Crux never persists either implicitly.
 *
 * @example
 * ```ts
 * const result = await openai.streamImage({
 *   model: 'gpt-image-2',
 *   prompt: 'A quiet canal at sunrise',
 *   extra: { partial_images: 2 },
 * })
 *
 * for await (const event of result.fullStream) {
 *   if (event.type === 'image-preview') render(event.image)
 * }
 * ```
 */
export type OpenAIStreamImage = StreamImage<string, OpenAIImageStreamExtra, ImageGenCompletedEvent, OpenAIImageStreamMetadata, never>;
/** Define native OpenAI Images API streaming mechanics. */
export declare function createOpenAIImageStreamingOperation(client: OpenAI): import("@use-crux/core/adapter").StreamingOperationDefinition<string, OpenAIImageStreamInput, Readonly<{
    options: OpenAIImageStreamInput;
    prompt: Awaited<ReturnType<typeof import("@use-crux/core").lowerImagePrompt>>;
}>, OpenAI.Images.ImageGenStreamEvent, OpenAI.Images.ImageGenCompletedEvent, {
    type: "image-preview";
    image: import("@use-crux/core").Asset;
    outputIndex: number;
    sequence: number;
}, import("@use-crux/core/adapter").GenerateImagePayload<OpenAI.Images.ImageGenCompletedEvent, Readonly<{
    background: "transparent" | "opaque" | "auto";
    created_at: number;
    output_format: "png" | "webp" | "jpeg";
    quality: "low" | "medium" | "high" | "auto";
    size: "1024x1024" | "1024x1536" | "1536x1024" | "auto";
    usage: ImageGenCompletedEvent.Usage;
}>, never>, {
    kind: "image";
    count: number;
}>;