gistfile1.txt

//require ./ctx-wrapper.js
let ctxWrapper = require('./ctx-wrapper');

//then wrap the following promise in a function
new ctxWrapper(exchange, exchangeConfig)
    .ohlc(parseFloat(CANDLES_LENGTH), parseFloat(PERIOD), pair)
    .then((candles) => {
        //do your own things with candles
    })
    .catch((e) => {
        console.log(e);
    });