code: function ensureLoader (lang) {
      return lang.split('!').map(function (loader) {
        return loader.replace(/^([\w-]+)(\?.*)?/, function (_, name, query) {
          return (/-loader$/.test(name) ? name : (name + '-loader')) + (query || '')
        })
      }).join('!')
    }
docs: sass => sass-loader sass-loader => sass-loader sass?indentedsyntax!css => sass-loader?indentedSyntax!css-loader