Logging without newline in NodeJS

Question

How to log this stream of data without a newline each time?

websocket.on('message', (msg) => {
    console.log(msg.content);
  }
});

Above would result in:

> streamedContent-1
> streamedContent-2
> streamedContent-3..

What I want to achieve is:

> streamedContent-n // this line getting updated on each refresh, no new line

DedaDev · Accepted Answer · 2019-09-21 13:30:30Z

1

You can use c++ stdout methods inside a Node app to "edit" a line in runtime.

process.stdout.clearLine()
process.stdout.write(`\r${msg.content}`);

answered Sep 21, 2019 at 13:25

DedaDev

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3 Comments

That worked perfectly. How would you color or format stdout by the way, since console.log hides that complexity for you?

There is a node module for that it's called chalk i think.

process.stdout.write('\r' + chalk.red(msg.content));