https://github.com/oresoftware/log-prepend

Create a function like console.log or console.error, but with a prepended string on each line.
https://github.com/oresoftware/log-prepend

javascript logging nodejs stderr stdout stream streaming

Last synced: 19 days ago
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Create a function like console.log or console.error, but with a prepended string on each line.

• Host: GitHub
• URL: https://github.com/oresoftware/log-prepend
• Owner: ORESoftware
• License: mit
• Created: 2017-09-01T00:16:08.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-07-19T04:25:04.000Z (over 6 years ago)
• Last Synced: 2024-12-05T10:37:47.507Z (28 days ago)
• Topics: javascript, logging, nodejs, stderr, stdout, stream, streaming
• Language: JavaScript
• Homepage:
• Size: 22.5 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        

# log-prepend

Create a console.log or console.error like function, but prepend a string to each line.

## API

```js

const {lp} = require('log-prepend');

const log = lp(' [suman] ', process.stdout);

const logerr = lp(' [suman error] ', process.stderr);

log('a','b','c');

log('log1', 'log2\n3',4,5 + '\n55');

```

To use colors in the prepending string, simply do:

```js

const chalk = require('chalk');

const log = lp(chalk.blue(' [suman] '), process.stdout);

const logerr = lp(chalk.red(' [suman error] '), process.stderr);

```

# Extra

This works as a rudimentary solution:

```js

const log = console.log.bind(console, ' [suman] ');

```

But the problem with the above log function is that it won't handle new lines chars that are passed to it.