import type { TranslationData } from "../../types";
/**
 * Compares local languageData.json with spreadsheet data to find new keys.
 *
 * A key is considered "new" when:
 * - No matching locale exists in `spreadsheetData` for that locale, OR
 * - The sheet or key is absent for the resolved locale.
 *
 * Locale matching is fuzzy: `'en'` and `'en-GB'` will both match against
 * an `'en-us'` entry in `spreadsheetData` (language-family resolution via
 * `resolveLocaleWithFallback`).
 *
 * @param localData - Data from local languageData.json file
 * @param spreadsheetData - Data fetched from the spreadsheet
 * @returns Object with new keys that are in localData but not in spreadsheetData
 */
export declare function findLocalChanges(localData: TranslationData, spreadsheetData: TranslationData): TranslationData;
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