/**
 * 行情数据获取（零依赖：node 原生 fetch，Binance 公共 REST API，无需凭据）。
 *
 * 拆分纯函数与网络层：
 * - parseKlines：纯函数（离线可测）
 * - fetchKlines：网络（集成验证）
 *
 * Binance klines 响应行（数组，字段为字符串数字）：
 * [openTime, open, high, low, close, volume, closeTime, quoteVolume, trades, takerBase, takerQuote, ignore]
 */
/** K 线间隔枚举（Binance 支持集）。 */
export declare const INTERVALS: readonly ["1m", "3m", "5m", "15m", "30m", "1h", "2h", "4h", "6h", "8h", "12h", "1d", "3d", "1w", "1M"];
export type Interval = (typeof INTERVALS)[number];
export interface Candle {
    /** 开盘时间（Unix 毫秒） */
    openTime: number;
    open: number;
    high: number;
    low: number;
    close: number;
    volume: number;
}
export declare const BINANCE_KLINE_URL = "https://api.binance.com/api/v3/klines";
/** 支持的行情 provider。 */
export type MarketProvider = 'binance' | 'okx' | 'bybit' | 'sina' | 'tencent' | 'yahoo';
export declare const MARKET_PROVIDERS: readonly ["binance", "okx", "bybit", "sina", "tencent", "yahoo"];
/** 解析 Binance klines 响应行（纯函数）。非法行抛错。 */
export declare function parseKlines(rows: readonly (readonly unknown[])[]): Candle[];
/** 拉取 K 线。超时由调用方 signal 控制（建议 AbortSignal.any([exec.signal, AbortSignal.timeout(ms)])）。 */
export declare function fetchKlines(symbol: string, interval: Interval, limit: number, signal: AbortSignal, provider?: MarketProvider): Promise<Candle[]>;
/** 解析 OKX candles（倒序 → 正序，映射到统一 Candle）。 */
export declare function parseOkxKlines(rows: readonly (readonly unknown[])[]): Candle[];
/** 解析 Bybit klines（倒序 → 正序，映射到统一 Candle）。 */
export declare function parseBybitKlines(rows: readonly (readonly unknown[])[]): Candle[];
/** A 股代码校验：sh/sz/bj + 6 位数字。 */
export declare function assertAShareSymbol(symbol: string): void;
/** Yahoo 代码校验：美股 ticker / 指数 ^GSPC / 港股 0700.HK 等。 */
export declare function assertYahooSymbol(symbol: string): void;
/** 解析新浪 K 线（对象行：day/open/high/low/close/volume，价格为字符串）。 */
export declare function parseSinaKlines(rows: readonly Record<string, unknown>[]): Candle[];
/** 解析腾讯 K 线（qfqday/day 行：[date, open, close, high, low, volume]）。 */
export declare function parseTencentKlines(symbol: string, json: {
    code?: number;
    data?: Record<string, {
        qfqday?: readonly (readonly unknown[])[];
        day?: readonly (readonly unknown[])[];
    }>;
}): Candle[];
/** 解析 Yahoo chart 响应（纯函数）：时间戳 + 引用的并列数组，过滤 null 行。 */
export declare function parseYahooChart(symbol: string, json: {
    chart?: {
        result?: {
            timestamp?: readonly number[];
            indicators?: {
                quote?: readonly {
                    open?: readonly (number | null)[];
                    high?: readonly (number | null)[];
                    low?: readonly (number | null)[];
                    close?: readonly (number | null)[];
                    volume?: readonly (number | null)[];
                }[];
            };
        }[];
        error?: unknown;
    };
}): Candle[];