tardis-dev/dist/realtimefeeds/bitget.js

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

import { batchObjects } from "../handy.js";
import { RealTimeFeedBase } from "./realtimefeed.js";
class BitgetRealTimeFeedBase extends RealTimeFeedBase {
    throttleSubscribeMS = 100;
    wssURL = 'wss://ws.bitget.com/v3/ws/public';
    mapToSubscribeMessages(filters) {
        const argsInputs = filters.flatMap((filter) => {
            if (filter.channel === 'liquidation') {
                return this.getLiquidationInstTypes().map((instType) => {
                    return {
                        instType,
                        topic: filter.channel
                    };
                });
            }
            if (!filter.symbols || filter.symbols.length === 0) {
                throw new Error('BitgetRealTimeFeed requires explicitly specified symbols when subscribing to live feed');
            }
            return filter.symbols.map((symbol) => {
                return {
                    instType: this.getInstType(symbol),
                    topic: filter.channel,
                    symbol
                };
            });
        });
        const payload = [...batchObjects(argsInputs, 5)].map((args) => {
            return {
                op: 'subscribe',
                args
            };
        });
        return payload;
    }
    messageIsError(message) {
        return message.event === 'error';
    }
    getLiquidationInstTypes() {
        return [];
    }
}
export class BitgetRealTimeFeed extends BitgetRealTimeFeedBase {
    getInstType(_) {
        return 'spot';
    }
}
export class BitgetFuturesRealTimeFeed extends BitgetRealTimeFeedBase {
    getInstType(symbol) {
        if (symbol.endsWith('USDT')) {
            return 'usdt-futures';
        }
        if (symbol.endsWith('PERP')) {
            return 'usdc-futures';
        }
        return 'coin-futures';
    }
    getLiquidationInstTypes() {
        return ['usdt-futures', 'usdc-futures', 'coin-futures'];
    }
}
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