Lyonesse

Why Lyonesse

When developing front-ends, it's often the case that a color may be used both in the CSS files and in Javascript (with Canvas, SVG...).

Lyonesse goal is to let you have a centralized file for this kind of variable.

Most notably, having a unique file for all the colors used in your web application will ease any future redesign.

See here the specifications of Lyonesse file.

See also gulp-lyonesse to use Lyonesse in your gulp build process.

If you use Sublime Text, download sublime-lyonesse syntax definition file, it provides code highlighting.

• Functions
• Available options
• Run tests
• Changelog

Released under MIT License.

Install

npm install --save lyonesse

Lyonesse functions

Callback takes two arguments: err in case of errors, and result for compiled string.

lyonesse.fromString(str, [options], callback)

Parse a Lyonesse string and call back with Js or Scss compiled string.

lyonesse.fromFile(filepath, [options], callback)

Parse a Lyonesse file and call back with Js or Scss compiled string.

lyonesse.parse(str)

Returns a Lyonesse object from a Lyonesse string.

lyonesse.solve(obj, options)

Solve variables inside the Lyonesse file.

lyonesse.toScss(obj, options)

Returns a Scss string from a Lyonesse object, using given options.

lyonesse.toJs(obj, options)

Returns a Js string from a Lyonesse object, using given options.

Example

var lyonesse = require('lyonesse');

lyonesse.fromString('color: #000', function (err, result) {
    if (!!err) {
        return;
    }

    console.log(result); 
    // var color = '#000';
});

Variables in Lyonesse

Since Lyonesse 0.1.2, variables inside Lyonesse are now supported. For example, given this Lyonesse file:

myColor: #234567
otherColor: $myColor

when parsed and solve, the variable otherColor will get the value of myColor so otherColor value is now #234567.

Use the solve option to deactivate this behaviour.

Namespaces

Since Lyonesse 0.1.3, you can use namespaces in Lyonesse files:

my:
    namespace:
        color: #000
    inside: #f00
global: #fff

This will produce the following JavaScript:

var my = {
        namespace: {
            color: '#000'
        },
        inside: '#f00'
    }, 
    global = '#fff';

and the following Scss:

$my-namespace-color: #000;
$my-inside: #f00;
$global: #fff;

Options

• symbol: default '$' - Specifies prefix of Scss variables
• target: 'scss' or 'js', default 'js' - Specifies compilation target when using fromFile and fromString functions
• namespace: default null
• closure: default false - For JS only, enclose result in a closure (nested namespaces only)
• solve: default true - Solve or not the variables inside the lyonesse file

Run tests

Requires mocha (npm install -g mocha), then in command line:

$ mocha

Changelog

• 0.1.0: First version
• 0.1.1: Add closure option
• 0.1.2: Variable replacement!
• 0.1.3: Namespaces!
• 0.2.0: It's Scss, not Sass dumb
  • Breaking change: rename toSass method to toScss
• 0.2.1: Fix variables inside namespaces
• 0.3.0: Rebranding to Lyonesse!