import { NoEditableAreaError } from './no-editable-area-error.js';
/**
 * Determine if HTML is a complete document or fragment
 * @param htmlContent HTML content
 * @returns true for complete document, false for fragment
 */
export declare function isFullHtmlDocument(htmlContent: string): boolean;
/**
 * Extract content from HTML by selector (fragment-compatible version)
 * @param htmlContent HTML content
 * @param selector CSS selector
 * @returns Extracted content and HTML type
 */
export declare function extractContentFromHtml(htmlContent: string, selector: string): {
    content: string;
    isFullDocument: boolean;
} | NoEditableAreaError;
/**
 * Update HTML with new content (fragment-compatible version)
 * @param originalHtml Original HTML content
 * @param selector CSS selector
 * @param newContent New content
 * @returns Updated HTML content
 */
export declare function updateHtmlContent(originalHtml: string, selector: string, newContent: string): string;
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