tardis-dev/dist/realtimefeeds/cryptocom.js

Convenient access to tick-level historical and real-time cryptocurrency market data via Node.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CryptoComRealTimeFeed = void 0;
const realtimefeed_1 = require("./realtimefeed");
class CryptoComRealTimeFeed extends realtimefeed_1.RealTimeFeedBase {
    constructor() {
        super(...arguments);
        this.wssURL = 'wss://stream.crypto.com/exchange/v1/market';
    }
    mapToSubscribeMessages(filters) {
        const channels = filters
            .map((filter) => {
            if (!filter.symbols || filter.symbols.length === 0) {
                throw new Error('CryptoComRealTimeFeed requires explicitly specified symbols when subscribing to live feed');
            }
            return filter.symbols.map((symbol) => {
                const suffix = filter.channel === 'book' ? '.50' : '';
                return `${filter.channel}.${symbol}${suffix}`;
            });
        })
            .flatMap((s) => s);
        return [
            {
                id: 1,
                method: 'subscribe',
                nonce: new Date().valueOf(),
                params: {
                    channels: channels,
                    book_subscription_type: 'SNAPSHOT_AND_UPDATE'
                }
            }
        ];
    }
    messageIsError(message) {
        return message.code !== undefined && message.code !== 0 && message.code !== 40003;
    }
    onMessage(msg) {
        if (msg.method === 'public/heartbeat') {
            this.send({
                id: msg.id,
                method: 'public/respond-heartbeat'
            });
        }
    }
    messageIsHeartbeat(msg) {
        return msg.method === 'public/heartbeat';
    }
}
exports.CryptoComRealTimeFeed = CryptoComRealTimeFeed;
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