colorzy

colorzy is a simple tools that adds formatting methods to objects. Most useful with String, I think.

Changelog

Take a look at the commits/changes on GitHub.

Installation

Install with npm:

npm install colorzy

Formatting

The returned object by require offers a method named colorize that adds formatting methods to the given object. Please keep in mind that JavaScript has prototype base derivation so that you have to use the prototype property of a class to add methods to all objects of that type.

colorzy.colorize(String.prototype);     // Add formatting to all Strings

The colorize method takes two parameters:

1. The object
2. A boolean value: if false (default), methods will only be added if they do not already exists

General

• Bold
• Italic (does not work everywhere)
• Underline
• Inverse

Foreground

• Black
• Blue
• Cyan
• Green
• Grey
• Magenta
• Red
• White
• Yellow

Background

• Black
• Blue
• Cyan
• Green
• Grey
• Magenta
• Red
• White
• Yellow

The methods are named like the formatting option, some has a Background suffix. So, to print red text on green background (please don't do that):

console.log("hello, world".red().greenBackground())

Elephant

To print all formatting options to the console, use colorzy.elephant().

Example usage

The following example demonstrates the usage of the tool:

var colorzy = require("colorzy");
var util = require("util");
 
colorzy.colorize(String.prototype,true);
 
console.log(" * |  0  1  2  3  4  5  6  7  8  9".green());
console.log("---+------------------------------".green());
for( var i = 0; i < 10; i++ ) {
    util.print((" "+i+" | ").green());
 
    for( var j = 0; j < 10; j++ ) {
        var v = i * j;
        var r = ""+(i * j);
 
        if( r <  10 ) r = " "+r;
 
        if( i == j )
            if( v < 10 )
                r = r.bold().magenta();
            else
                r = r.redBackground().black();
        else if( v < 10 )
            r = r.blue();
        else
            r = r.yellow();
 
        util.print(r+" ");
    }
 
    util.print('\n');
}

More information

There is a blog post about colorzy including screenshots and a notice concerning WebStorm.