import { WordStatistics } from './word-statistics.js';
/**
 * Upserts word-statistic values into a parsed app.xml structure.
 *
 * If the given `convertedXml` does not contain an app.xml part, one is
 * created with a minimal `Properties` root. Existing elements not listed
 * here are left untouched.
 *
 * @param convertedXml - The mutable map of part paths → parsed XML trees.
 * @param stats - Fresh statistics from the Word-statistics helper.
 */
export declare function writeAppStatistics(convertedXml: Record<string, unknown>, stats: WordStatistics): void;
/**
 * Reads a statistic value from docProps/app.xml.
 * Returns the text content of the named element, or null if not found.
 */
export declare function readAppStatistic(convertedXml: Record<string, unknown>, tagName: string): string | null;
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