import type { INode } from 'n8n-workflow';
/**
 * File validation utilities for n8n nodes
 */
/**
 * Validates file size against a maximum limit
 * @param buffer - The file buffer to validate
 * @param maxSizeMB - Maximum file size in megabytes
 * @throws Error if file size exceeds the limit
 */
export declare function validateFileSize(buffer: Buffer, maxSizeMB: number, node?: INode): void;
/**
 * Validates file size from binary data object
 * @param fileSize - File size in bytes (from binary data, can be number or string)
 * @param maxSizeMB - Maximum file size in megabytes
 * @throws Error if file size exceeds the limit
 */
export declare function validateFileSizeFromMetadata(fileSize: number | string | undefined, maxSizeMB: number, node?: INode): void;
//# sourceMappingURL=fileValidation.d.ts.map