code: function CSSPluginBase(compileCSS) {
    this.compileCSS = compileCSS;
  
    this.translate = function(load, opts) {
      var loader = this;
      if (loader.builder && loader.buildCSS === false) {
        load.metadata.build = false;
        return;
      }
  
      var path = this._nodeRequire && this._nodeRequire('path');
  
      return Promise.resolve(compileCSS.call(loader, load.source, load.address, load.metadata.loaderOptions || {}))
      .then(function(result) {
        load.metadata.style = result.css;
        load.metadata.styleSourceMap = result.map;
        if (result.moduleFormat)
          load.metadata.format = result.moduleFormat;
        return result.moduleSource || '';
      });
    };
  }
docs: /*
  Base CSS Plugin Class