/*******************************************************************************
 * Copyright (c) 2023-2026 Maxprograms.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse   License 1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/org/documents/epl-v10.html
 *
 * Contributors:
 *     Maxprograms - initial API and implementation
 *******************************************************************************/
import { Readable } from "node:stream";
import { ParseSourceOptions, StreamParseOptions } from "./SAXParser.js";
import { XMLDocument } from "./XMLDocument.js";
/**
 * Generates the canonical XML representation defined by the W3C XML Test Suite.
 *
 * Canonicalization rules:
 *  - Attribute order is lexical (Unicode code point order).
 *  - Character data is escaped using the Datachar productions (&, <, >, ", 	, 
, 
).
 *  - CDATA sections are treated as their character content.
 *  - Comments and document type declarations are omitted.
 *  - Processing instructions are preserved in document order with their data escaped as Datachar.
 */
export declare class XMLCanonicalizer {
    private document;
    parseFile(path: string, encoding?: BufferEncoding): void;
    parseString(xml: string, options?: ParseSourceOptions): void;
    parseStream(stream: Readable, options?: StreamParseOptions): Promise<void>;
    setDocument(document: XMLDocument): void;
    getDocument(): XMLDocument | undefined;
    toString(): string;
    private renderDocument;
    private renderTopLevelNode;
    private renderElement;
    private renderProcessingInstruction;
    private getNodeValue;
    private escapeData;
    private escapeProcessingInstructionData;
    private isWhitespaceOnly;
}