text: (function() {
    var BackgroundSize, Declaration,
      __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
      __hasProp = {}.hasOwnProperty;
  
    Declaration = require('../declaration');
  
    BackgroundSize = (function(_super) {
      __extends(BackgroundSize, _super);
  
      function BackgroundSize() {
        return BackgroundSize.__super__.constructor.apply(this, arguments);
      }
  
      BackgroundSize.names = ['background-size'];
  
      BackgroundSize.prototype.set = function(decl, prefix) {
        var value;
        value = decl.value.toLowerCase();
        if (prefix === '-webkit-' && value.indexOf(' ') === -1 && value !== 'contain' && value !== 'cover') {
          decl.value = decl.value + ' ' + decl.value;
        }
        return BackgroundSize.__super__.set.call(this, decl, prefix);
      };
  
      return BackgroundSize;
  
    })(Declaration);
  
    module.exports = BackgroundSize;
  
  }).call(this);
  