/**
 * Compression utilities for BalanceHistoryCache
 *
 * This module provides compression/decompression functions to reduce
 * the storage size of balance history cache in app.json.
 *
 * Strategy: Run-Length Encoding (RLE) on absolute values
 * - If a value repeats 2+ times: store as [value, count]
 * - Otherwise: store the value directly
 *
 * Format:
 * - balances array contains numbers or RLE tuples [value, count]
 * - All values are absolute (no delta encoding to preserve precision)
 */
import type { BalanceHistoryCache, BalanceHistoryDataCache, CompressedBalanceHistoryCache, CompressedBalanceHistoryDataCache, CompressedBalanceEntry } from "@ledgerhq/types-live";
export type { CompressedBalanceHistoryCache, CompressedBalanceHistoryDataCache, CompressedBalanceEntry, };
/**
 * Compress a single BalanceHistoryDataCache using RLE on absolute values
 *
 * @param cache - The cache to compress
 * @returns Compressed cache with RLE-compressed balances
 * @example
 * // Input: [1000000, 1000000, 1000000, 1000500, 1000500]
 * // Output: [[1000000, 3], [1000500, 2]]
 * compressBalanceHistoryDataCache({
 *   latestDate: 1234567890,
 *   balances: [1000000, 1000000, 1000000, 1000500, 1000500]
 * })
 */
export declare function compressBalanceHistoryDataCache(cache: BalanceHistoryDataCache): CompressedBalanceHistoryDataCache;
/**
 * Decompress a CompressedBalanceHistoryDataCache back to BalanceHistoryDataCache
 * Handles backward compatibility with uncompressed format (array of absolute numbers)
 *
 * @param data - The compressed cache (or uncompressed for backward compatibility)
 * @returns Decompressed cache with absolute balances
 * @example
 * // Input: [[1000000, 3], [1000500, 2]]
 * // Output: [1000000, 1000000, 1000000, 1000500, 1000500]
 * decompressBalanceHistoryDataCache({
 *   latestDate: 1234567890,
 *   balances: [[1000000, 3], [1000500, 2]]
 * })
 */
export declare function decompressBalanceHistoryDataCache(data: CompressedBalanceHistoryDataCache | BalanceHistoryDataCache | null | undefined): BalanceHistoryDataCache;
export declare function compressBalanceHistoryCache(cache: BalanceHistoryCache | null | undefined): CompressedBalanceHistoryCache;
/**
 * Decompress a CompressedBalanceHistoryCache back to BalanceHistoryCache
 *
 * @param data - The compressed cache (or uncompressed for backward compatibility)
 * @returns Decompressed cache
 * @example
 * decompressBalanceHistoryCache({
 *   HOUR: { latestDate: 1000, balances: [[100, 3]] },
 *   DAY: { latestDate: 2000, balances: [200, 200] },
 *   WEEK: { latestDate: 3000, balances: [300] }
 * })
 * // Returns: {
 * //   HOUR: { latestDate: 1000, balances: [100, 100, 100] },
 * //   DAY: { latestDate: 2000, balances: [200, 200] },
 * //   WEEK: { latestDate: 3000, balances: [300] }
 * // }
 */
export declare function decompressBalanceHistoryCache(data: CompressedBalanceHistoryCache | BalanceHistoryCache | null | undefined): BalanceHistoryCache;
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