node package manager



NPM Build Status

Easy Less processing for node/moonboots projects.


npm install lessitizer --save


// Parse `styles/less/theme.less` and `styles/less/app.less` 
// and write them to `styles/css/theme.css` and `styles/css/app.css` 
    files: [
        __dirname + '/styles/less/theme.less',
        __dirname + '/styles/less/app.less'
    outputDir: __dirname + '/styles/css',
}, function (err, cssPaths) {
    console.log(err || 'No errors!');
    // An array of generated css paths 
// Parse the Less strings and pass it to the callback 
    files: [{
        less: 'body { p { color: red; } }'
    }, {
        less: 'body { a { color: blue; } }'
}, function (err, css) {
    console.log(err || 'No errors!');
    // An array of generated css: 
    // body p { 
    //   color: red; 
    // } 
    // body a { 
    //   color: blue; 
    // } 


  • files (String or Array, required)

Each files can be one of two things:

  • a path to a less file
  • an object with a less property that is a string of Less

In the case where you are passing an object, you can also include a dir property. This is the path to where the directory where Less file should be, if it were actually written to disk. This will allow you to use Less's @import syntax relative to the dir you pass in.

You can also pass in a filename option to specify the name of the file when/if it gets written to disk.

It should look like this:

  less: '@import...',
  dir: '/path/to/less/styles',
  filename: 'cool-file'
  • outputDir (String, optional)

The path to the directory where all the CSS files will be written. If this is omitted, then the generated CSS will be passed to the callback.

  • less (Object, see below for defaults)

An object that will be passed directly to new less.Parser(). See the Less configuration docs for available options. There are a few default values:

    "optimization": 1,
    "relativeUrls": true,
    "paths": [DIR_OF_LESS_FILE],
    "filename": "NAME_OF_LESS_FILE.less"
  • developmentMode (Boolean, default false)

If developmentMode is true, any errors will be written to the CSS file and displayed instead of the body.


Run npm start to see the output from sample/build.js and the css written to sample/css and sample/cssErr. This will also start a server so you can go the to regular and error pages.

Tests and Code Coverage

Run npm test.