Function handleStyling

packages/plugins/mark/src/serializer/markdown.ts:16–19

(type: 'strong' | 'emphasis' | 'delete')

        : (next(node, options) as PhrasingContent[])

      const handleStyling = (type: 'strong' | 'emphasis' | 'delete'): void => {
        const styling: Strong | Emphasis | Delete = { type, children }
        children = [styling]
      }

      const handleHTML = (start: string, end: string): void => {
        const htmlStart: HTML = { type: 'html', value: start }