less loader for webpack

Usage

Documentation: Using loaders

var css = require("!raw!less!./file.less");
// => returns compiled css code from file.less, resolves imports
var css = require("!css!less!./file.less");
// => returns compiled css code from file.less, resolves imports and url(...)s

Use in tandem with the style-loader to add the css rules to your document:

require("!style!css!less!./file.less");

webpack config

module.exports = {
  module: {
    loaders: [
      {
        test: /\.less$/,
        loader: "style-loader!css-loader!less-loader"
      }
    ]
  }
};

Then you only need to write: require("./file.less")

Note on imports

webpack provides an advanced mechanism to resolve files. The less-loader stubs less' fileLoader and passes all queries to the webpack resolving engine. Thus you can import your less-modules from node_modules or bower_components. Just prepend them with a ~ which tells webpack to look-up the modulesDirectories

@import "~bootstrap/less/bootstrap";

It's important to only prepend it with ~, because ~/ resolves to the home-directory. webpack needs to distinguish bootstrap from ~bootstrap because css- and less-files have no special syntax for importing relative files:

@import "file";

is the same as

@import "./file";

Contribution

Don't hesitate to create a pull request. Every contribution is appreciated. In development you can start the tests by calling npm test.

The tests are basically just comparing the generated css with a reference css-file located under test/css. You can easily generate a reference css-file by calling node test/helpers/generateCss.js <less-file-without-less-extension>. It passes the less-file to less and writes the output to the test/css-folder.

License

MIT (http://www.opensource.org/licenses/mit-license.php)