How to get the data from a readable stream

FetchReadableStream.js

// When we fetch data we get a readable stream as a response in the body.
// To receive the data we can call the `json()` function on the response.
// That reads out the full response and returns us a json object instead of a stream object.

fetch('https://api.coindesk.com/v1/bpi/currentprice.json')
    .then(res => res.json())
    .then(data => console.log(data))