Track download/upload and provide transfer stats
$ yarn add transfer-stats
const Transfer = require('transfer-stats');
const { relativeTimeThreshold, duration } = require('moment')
const fileSize = 10000; // Filesize (perhaps from content-length header).
const transfer = new Transfer({
bytesTotal: fileSize
/*
* bytesTotal is not required but many stats will
* be unavailable if it is not specified
*/
});
transfer.start();
// Once transfer is started you can also call `transfer.pause()`
// and `transfer.resume()` to pause/resume the transfer
setTimeout(() => {
// 100 bytes have been transferred
transfer.updateBytes(100);
console.log(`${duration(transfer.stats.msRemaining).humanize()} remaining`);
// => 30 seconds remaining
console.log(transfer.stats);
// =>
// {
// "started": true,
// "finished": false,
// "bytesTotal": 10000,
// "bytesCompleted": 100,
// "startDateTime": 1509538897032,
// "percentage": 0.01,
// "bytesRemaining": 9900,
// "msElapsed": 304,
// "bytesPerSecond": 328.94736842105266,
// "msTotal": 30500,
// "msRemaining": 30195
// }
setTimeout(() => {
// Transfer has completed
transfer.updateBytes(10000);
transfer.finish();
console.log(transfer.stats);
// =>
// {
// "started": false,
// "finished": true,
// "bytesTotal": 10000,
// "bytesCompleted": 10000,
// "startDateTime": 1509539150595,
// "endDateTime": 1509539151814,
// "percentage": 1,
// "bytesRemaining": 0,
// "msElapsed": 1219,
// "bytesPerSecond": 8203.445447087777,
// "msTotal": 1218,
// "msRemaining": 0
// }
}, 900);
}, 300);