ts-crypto-cli demo

// We can use any package from NPM since they are all built in. const { getKrakenTickerStream } = require('ts-crypto-cli'); const { pairwise } = require('rxjs/operators'); const { Subject, Subscription } = require('rxjs'); // Track latest price const krakenTicker$ = getKrakenTickerStream('XBT', 'EUR') krakenTicker$.subscribe(({ price: lastKrakenPrice }) => { console.log({ lastKrakenPrice }); }, (krakenTrackLastPriceError) => { logError({ krakenTrackLastPriceError }); }) // Track last price change krakenTicker$.pipe(pairwise()).subscribe(([{ price: prevKrakenPrice }, { price: currentKrakenPrice }]) => { console.log({ prevKrakenPrice, currentKrakenPrice }); }, (krakenWatchPriceChangeError) => { logError({ krakenWatchPriceChangeError }); })