import { type Pred } from 'runtyp';
export type UploadedFile = {
    filename: string;
    mimeType: string;
    size: number;
    buffer: Buffer;
};
export type FilePredOptions = {
    maxBytes?: number;
    mime?: readonly string[];
};
export type RouteFileField = {
    name: string;
    opts: FilePredOptions;
    required: boolean;
};
/** Default upload cap (10MB). */
export declare const DEFAULT_FILE_MAX_BYTES: number;
export declare function routeFileFields(input: Pred<unknown>): RouteFileField[];
export declare function isMultipartRoute(input: Pred<unknown>): boolean;
export declare function multipartLimits(input: Pred<unknown>): {
    fileSize: number;
    files: number;
};
export declare function file(opts?: FilePredOptions): Pred<UploadedFile>;