JarCastingansistyles 
Functions that surround a string with ansistyle codes so it prints in style.
In case you need colors, like red, have a look at ansicolors.
Installation
npm install ansistyles
Usage
var styles = require('ansistyles');
console.log(styles.bright('hello world')); // prints hello world in 'bright' white
console.log(styles.underline('hello world')); // prints hello world underlined
console.log(styles.inverse('hello world')); // prints hello world black on white
Combining with ansicolors
Get the ansicolors module:
npm install ansicolors
var styles = require('ansistyles')
, colors = require('ansicolors');
console.log(
// prints hello world underlined in blue on a green background
colors.bgGreen(colors.blue(styles.underline('hello world')))
);
Tests
Look at the tests to see more examples and/or run them via:
npm explore ansistyles && npm test
More Styles
As you can see from here, more styles are available, but didn't have any effect on the terminals that I tested on Mac Lion and Ubuntu Linux.
I included them for completeness, but didn't show them in the examples because they seem to have no effect.
reset
A style reset function is also included, please note however that this is not nestable.
Therefore the below only underlines hell only, but not world.
console.log(styles.underline('hell' + styles.reset('o') + ' world'));
It is essentially the same as:
console.log(styles.underline('hell') + styles.reset('') + 'o world');
Alternatives
ansistyles tries to meet simple use cases with a very simple API. However, if you need a more powerful ansi formatting tool, I'd suggest to look at the features of the ansi module.