docs: function findRenderer(extension) {
    var renderer;
  
    // Default to HTML if you don't have an extension
    extension = extension || renderers.default;
    // Get the renderer
    renderer = _.get(renderers, `${extension}`, null);
  
    if (renderer) {
      return renderer;
    } else {
      return new Error(`Renderer not found for extension ${extension}`);
    }
  }