seajs/dist/plugin-less.js

/**
 * The LESS plugin
 */
define('seajs/plugin-less', ['./plugin-base', 'less'], function(require) {

  var plugin = require('./plugin-base')
  var less = require('less')


  plugin.add({
    name: 'less',

    ext: ['.less'],

    fetch: function(url, callback) {
      less.Parser.importer(url, [], function(e, tree) {
        createCSS(tree.toCSS(), url.replace(/[^\w]/g, '_'))
        callback()
      }, {})
    }
  })


  function createCSS(cssText, id) {
    var elem = document.getElementById(id)
    if (elem) return

    elem = document.createElement('style')
    elem.id = id
    document.getElementsByTagName('head')[0].appendChild(elem)

    if (elem.styleSheet) { // IE
      elem.styleSheet.cssText = cssText
    } else { // W3C
      elem.appendChild(document.createTextNode(cssText))
    }
  }

});