/**
 * Reads an image from disk and returns its width/height. Wrapped so tests
 * can mock by reading a deterministic dimension out of a synthetic file.
 */
export interface ImageDimensions {
    width: number;
    height: number;
}
export type ImageSizeReader = (path: string) => Promise<ImageDimensions>;
export declare const defaultImageSizeReader: ImageSizeReader;
/**
 * Compute vision tokens for one image × one model. Dispatch by the model's
 * registered provider. Throws a clear error when a provider doesn't support
 * vision (we'll need this when Mistral / Cohere lands).
 */
export declare const computeVisionTokens: (modelId: string, dim: ImageDimensions, imagePath: string) => number;
export interface ResolvedImage {
    path: string;
    dim: ImageDimensions;
}
/**
 * Resolve all `--image` paths to dimensions in parallel. Reuses the file IO
 * once per image (we still re-dispatch per model since the formula differs).
 */
export declare const resolveImages: (paths: readonly string[], reader?: ImageSizeReader) => Promise<ResolvedImage[]>;
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