import type { FetchImpl, Model, Usage } from "@oh-my-pi/pi-catalog/types";
import type { ApiKey } from "../auth-retry.js";
import * as AIError from "../error/index.js";
import type { GeneratedImage } from "./types.js";
export declare class ImageApiError extends AIError.ProviderHttpError {
    readonly name = "ImageApiError";
}
export declare function emptyUsage(input?: number, output?: number, cost?: number): Usage;
export declare function usageFromWire(value: unknown): Usage;
export declare function imageBaseUrl(model: Model): string;
export declare function modelHeaders(model: Model, signal?: AbortSignal): Promise<Record<string, string>>;
export declare function errorMessage(rawText: string): string;
/** Request URL, or a builder for routes that depend on the bearer (xAI's `XAI_BASE_URL` rule). */
type ImageRequestUrl = string | ((bearer: string) => string);
export declare function postJson(options: {
    model: Model;
    url: ImageRequestUrl;
    body: unknown;
    apiKey: ApiKey;
    fetch: FetchImpl;
    signal?: AbortSignal;
}): Promise<unknown>;
export declare function postMultipart(options: {
    model: Model;
    url: ImageRequestUrl;
    body: FormData;
    apiKey: ApiKey;
    fetch: FetchImpl;
    signal?: AbortSignal;
}): Promise<unknown>;
export declare function decodeImageResponse(value: unknown, fetch: FetchImpl, signal?: AbortSignal): Promise<{
    images: GeneratedImage[];
    usage: Usage;
}>;
export declare function toDataUrl(image: GeneratedImage): string;
export declare function resolveOpenAIImageSize(aspectRatio?: string, imageSize?: string): string | undefined;
export {};