@hackape/tardis-dev
Version:
Convenient access to tick-level historical and real-time cryptocurrency market data via Node.js
80 lines • 2.85 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BitfinexRealTimeFeed = void 0;
const realtimefeed_1 = require("./realtimefeed");
const TIMESTAMP = 32768;
const SEQ_ALL = 65536;
class BitfinexRealTimeFeed extends realtimefeed_1.RealTimeFeedBase {
constructor() {
super(...arguments);
this.wssURL = 'wss://api-pub.bitfinex.com/ws/2';
}
mapToSubscribeMessages(filters) {
const configMessage = {
event: 'conf',
flags: TIMESTAMP | SEQ_ALL
};
const subscribeMessages = filters
.map((filter) => {
if (filter.channel !== 'liquidations' && (!filter.symbols || filter.symbols.length === 0)) {
throw new Error('BitfinexRealTimeFeed requires explicitly specified symbols when subscribing to live feed');
}
if (filter.channel === 'liquidations') {
return [
{
event: 'subscribe',
channel: 'status',
key: 'liq:global'
}
];
}
return filter.symbols.map((symbol) => {
if (filter.channel === 'trades') {
return {
event: 'subscribe',
channel: 'trades',
symbol: `t${symbol}`
};
}
if (filter.channel === 'book') {
return {
event: 'subscribe',
channel: 'book',
len: 100,
prec: 'P0',
freq: 'F0',
symbol: `t${symbol}`
};
}
if (filter.channel === 'status') {
return {
event: 'subscribe',
channel: 'status',
key: `deriv:t${symbol}`
};
}
if (filter.channel === 'raw_book') {
return {
event: 'subscribe',
channel: 'book',
len: 100,
prec: 'R0',
freq: 'F0',
symbol: `t${symbol}`
};
}
return;
});
})
.flatMap((c) => c);
return [configMessage, ...subscribeMessages];
}
messageIsError(message) {
return message.event === 'error';
}
messageIsHeartbeat(message) {
return Array.isArray(message) && message.length > 1 && message[1] === 'hb';
}
}
exports.BitfinexRealTimeFeed = BitfinexRealTimeFeed;
//# sourceMappingURL=bitfinex.js.map