import { Ref } from 'vue';
interface FileUploadOptions {
    /**
     * Accepted file types (MIME types)
     */
    accept?: Ref<string>;
    /**
     * Maximum file size in bytes
     */
    maxSize?: Ref<number>;
    /**
     * Maximum image width in pixels
     */
    maxWidth?: Ref<number | undefined>;
    /**
     * Maximum image height in pixels
     */
    maxHeight?: Ref<number | undefined>;
    /**
     * Callback when file is selected
     */
    onFileSelect?: (file: File) => void;
    /**
     * Callback when file is removed
     */
    onFileRemove?: () => void;
    /**
     * Callback when validation error occurs
     */
    onError?: (error: string) => void;
}
interface ValidationResult {
    valid: boolean;
    error?: string;
}
/**
 * Composable for managing file upload functionality
 * Provides file validation, drag-and-drop, preview generation, and cleanup
 */
export declare function useFileUpload(options?: FileUploadOptions): {
    isDragging: Ref<boolean, boolean>;
    previewUrl: Ref<string | null, string | null>;
    currentFile: Ref<{
        readonly lastModified: number;
        readonly name: string;
        readonly webkitRelativePath: string;
        readonly size: number;
        readonly type: string;
        arrayBuffer: () => Promise<ArrayBuffer>;
        bytes: () => Promise<Uint8Array<ArrayBuffer>>;
        slice: (start?: number, end?: number, contentType?: string) => Blob;
        stream: () => ReadableStream<Uint8Array<ArrayBuffer>>;
        text: () => Promise<string>;
    } | null, File | {
        readonly lastModified: number;
        readonly name: string;
        readonly webkitRelativePath: string;
        readonly size: number;
        readonly type: string;
        arrayBuffer: () => Promise<ArrayBuffer>;
        bytes: () => Promise<Uint8Array<ArrayBuffer>>;
        slice: (start?: number, end?: number, contentType?: string) => Blob;
        stream: () => ReadableStream<Uint8Array<ArrayBuffer>>;
        text: () => Promise<string>;
    } | null>;
    validationError: Ref<string | null, string | null>;
    handleFileSelect: (file: File) => Promise<void>;
    handleFileRemove: () => void;
    handleDragEnter: (event: DragEvent) => void;
    handleDragOver: (event: DragEvent) => void;
    handleDragLeave: (event: DragEvent) => void;
    handleDrop: (event: DragEvent) => Promise<void>;
    validateFile: (file: File) => Promise<ValidationResult>;
};
export {};
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