import { detectModalities } from "../modality.js";
import type { Modality } from "../types.js";
/** A model-level (V4) file part. `data` is irrelevant to detection — only
 *  `mediaType` is read — so a URL tag is used (no fetch happens in detection). */
export declare function filePart(mediaType: string): {
    type: "file";
    mediaType: string;
    data: {
        type: "url";
        url: URL;
    };
};
/** detectModalities returns a Set; assert as a sorted array for determinism. */
export declare function sortedModalities(prompt: Parameters<typeof detectModalities>[0]): Modality[];
export declare function sorted(mods: Modality[]): Modality[];