binance-api-lightweight/src/index.js

A super-speedy lightweight wrapper for Binance API

// ES6 module using ES2015 Javascript
export default class BinanceAPI {
    constructor(key, secret) {
        const BASE_URL = "https://www.binance.com/api/v1";
        const BASE_URL_V3 = "https://api.binance.com/api/v3";
        const PUBLIC_URL = "https://www.binance.com/exchange/public/product";
        this.key = key;
        this.secret = secret;
    }
    history(market, limit = 50) {
        let path = this.BASE_URL + "/historicalTrades";
        let params = { "symbol": market, "limit": limit };
        return this._noSign(path, params);
    }
    trades(market, limit = 50) {
        let path = BASE_URL + "/trades";
        let params = { "symbol": market, "limit": limit };
        return this._noSign(path, params);
    }
    kline(market) {
        let path = BASE_URL + "/klines";
        let params = { "symbol": market };
        return this._noSign(path, params);
    }
    ticker(market) {
        let path = BASE_URL + "/ticker/24hr";
        let params = { "symbol": market };
        return this._noSign(path, params);
    }
    order_books(market, limit = 50) {
        let path = BASE_URL + "/depth";
        let params = { symbol: market, "limit": limit };
        return this._noSign(path, params);
    }
    account() {
        let path = BASE_URL_V3 + "/account";
        return this._get(path, {});
    }
    products() {
        return JSON.stringify({ PUBLIC_URL, timeout: 30, verify: true });
    }
    exchangeInfo() {
        let path = BASE_URL + "/exchangeInfo";
        return JSON.stringify({ path, timeout: 30, verify: true });
    }
    openOrders(market, limit = 100) {
        let path = BASE_URL_V3 + "/openOrders";
        let params = { "symbol": market };
        return this._get(path, params);
    }
    myTrades(market, limit = 50) {
        let path = BASE_URL_V3 + "/myTrades";
        let params = { "symbol": market, "limit": limit };
        return this._get(path, params);
    }
    buyLimit(market, quantity, rate) {
        let path = BASE_URL_V3 + "/order";
        let params = this._order(market, quantity, "BUY", rate);
        return this._post(path, params);
    }
    sellLimit(market, quantity, rate) {
        let path = BASE_URL_V3 + "/order";
        let params = this._order(market, quantity, "SELL", rate);
        return this._post(path, params);
    }
    buyMarket(market, quantity) {
        let path = BASE_URL_V3 + "/order";
        let params = this._order(market, quantity, "BUY");
        return this._post(path, params);
    }
    sellMarket(market, quantity) {
        let path = BASE_URL_V3 + "/order";
        let params = this._order(market, quantity, "SELL");
        return this._post(path, params);
    }
    queryOrder(market, orderId) {
        let path = BASE_URL_V3 + "/order";
        let params = { "symbol": market, "orderId": orderId };
        return this._get(path, params);
    }
    cancel(market, order_id) {
        let path = BASE_URL_V3 + "/order";
        let params = { "symbol": market, "orderId": order_id };
        return this._delete(path, params);
    }
    _noSign(path, params = {}) {
        let query = encodeURI(params);
        let url = path + "?" + query;
        return JSON.stringify({ url, timeout: 30, verify: true });
    }
    // TODO: implement SHA256 encryption
    _sign(params = {}) {
        let data = params;
        data.timestamp = Date.now().toString();
        let h = encodeURI(data);
        let b = bytearray();
        b.extend(this.secret.encode());
        data.signature = hmac.new(b, msg = h.encode('utf-8'), digestmod = hashlib.sha256).hexdigest();
        return data;
    }
    _get(path, params = {}) {
        params["recvWindow"] = 120000;
        let query = encodeURI(this._sign(params));
        let url = path + "?" + query;
        let header = { "X-MBX-APIKEY": this.key };
        return JSON.stringify({ url, headers: header, timeout: 30, verify: true });
    }
    _post(path, params = {}) {
        params["recvWindow"] = 120000;
        let query = encodeURI(this._sign(params));
        let url = path + "?" + query;
        let header = { "X-MBX-APIKEY": this.key };
        return JSON.stringify({ url, headers: header, timeout: 30, verify: true });
    }
    _order(market, quantity, side, rate = null) {
        let params = {};
        if (rate != null) {
            params.type = "LIMIT";
            params.price = this._format(rate);
            params.timeInForce = "GTC";
        }
        else {
            params.type = "MARKET";
        }
        params.symbol = market;
        params.side = side;
        params.quantity = this._format(quantity);
        return params;
    }
    _format(price) {
        return price.toFixed(8);
    }
    _delete(path, params = {}) {
        params.update({ "recvWindow": 120000 });
        let query = encodeURI(this._sign(params));
        let url = BASE_URL + "?" + query;
        let header = { "X-MBX-APIKEY": this.key };
        return JSON.stringify({ url, headers: header, timeout: 30, verify: true });
    }
}