import { UploadFileV2 } from './UploadV2.types';
export declare const FILE_NAME_TAG_MAX_LEN = 24;
export declare const createClickHandler: (disabled: boolean, fileInputRef: React.RefObject<HTMLInputElement>) => () => void;
export declare const useUploadState: () => {
    internalDragState: {
        isDragActive: boolean;
        isDragAccept: boolean;
        isDragReject: boolean;
    };
    setInternalDragState: import('react').Dispatch<import('react').SetStateAction<{
        isDragActive: boolean;
        isDragAccept: boolean;
        isDragReject: boolean;
    }>>;
    setDragCounter: import('react').Dispatch<import('react').SetStateAction<number>>;
};
export declare const createDragHandlers: (disabled: boolean, setDragCounter: (fn: (prev: number) => number) => void, updateDragStateFn: (isDragActive: boolean, files?: File[]) => void, processFilesFn: (files: FileList) => void) => {
    handleDragEnter: (e: React.DragEvent) => void;
    handleDragLeave: (e: React.DragEvent) => void;
    handleDragOver: (e: React.DragEvent) => void;
    handleDrop: (e: React.DragEvent) => void;
};
export declare const truncateFileNameForTag: (name: string) => string;
export declare const getFileId: (uploadFile: UploadFileV2, index: number) => string;
export declare const isFileTypeAccepted: (file: File, acceptedFileTypes: string[]) => boolean;
declare const KNOWN_UPLOAD_ERROR_REASONS: readonly ["oversized", "maxFiles", "invalidType"];
type KnownUploadErrorReason = (typeof KNOWN_UPLOAD_ERROR_REASONS)[number];
export declare const formatFileSize: (sizeInBytes: number) => string;
export declare const isKnownUploadErrorReason: (reason: unknown) => reason is KnownUploadErrorReason;
export declare const normalizeUploadErrorReason: (reason: unknown) => "oversized" | "maxFiles" | "invalidType" | undefined;
export declare const getValidationMessage: (reason?: unknown, maxSize?: number, maxFiles?: number) => string;
export {};