import type { Api, ImageContent, Model, TextContent } from "../types.js";
export declare const NON_VISION_IMAGE_PLACEHOLDER = "[image omitted: model does not support vision]";
export declare function partitionVisionContent(content: ReadonlyArray<TextContent | ImageContent>, supportsImages: boolean): {
    textBlocks: TextContent[];
    imageBlocks: ImageContent[];
    omittedImages: boolean;
};
export declare function joinTextWithImagePlaceholder(text: string, omittedImages: boolean): string;
/**
 * Evaluates whether an OpenAI-compatible Chat Completions model genuinely
 * supports multimodal image inputs on the wire. Defensive guards override
 * misconfigured provider descriptors or user model entries (e.g. text-only
 * DashScope Qwen SKUs, DeepSeek models) whose endpoints reject `image_url`.
 */
export declare function isOpenAICompletionsVisionSupported(model: Model<"openai-completions" | "openrouter">): boolean;
/**
 * Whether the transport that will carry `model` sends image content on the wire.
 *
 * The `pi-native` transport forwards the original context (images included) to
 * the gateway, which resolves its own model server-side, so the Chat
 * Completions guard below never runs client-side and the declared input
 * applies. Otherwise the OpenAI Chat Completions path applies the text-only
 * guard, as does the OpenRouter chat fallback (`PI_OPENROUTER_RESPONSES=0`,
 * which dispatches `openrouter` models through `streamOpenAICompletions`);
 * every other API ships the modalities the model declares. Callers that report
 * or gate on the wire (for example the `omp models` table) read this
 * predicate; declared capability reads `model.input`.
 */
export declare function sendsImageInputOnWire(model: Model<Api>): boolean;