How to make promise from web-socket API? about letswritecode HOT 3 OPEN

----- Reply to message ----- Subject: Re: [shama/letswritecode] How to make promise from web-socket API? (#21) Date: 26 сентября 2018 г., 19:09:47 From: Kyle Robinson Young <[email protected]> To: shama/letswritecode <[email protected]> There is a non-standard API Promise.denodeify to help convert Node.js compatible callbacks to promises but that API signature in your example doesn't match the Node.js standard of error first in callbacks. But you can just wrap it in a promise to turn it into a promise: const Market = require('some-api'); const promise = new Promise((resolve, reject) => { const myMarket = new Market(); myMarket.websockets.trades(request[1], (trades, error) => { if (error) { reject(error); return; } if (this.streamStatus === 1) { resolve(JSON.stringify(['TR', this.getTimeString(), trades])); } else { reject(new Error('This promise wasnt handled')); } }); }); promise .then((json) => { /* do stuff with json */ }) .catch((err) => { /* do stuff with err */ }) — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.