| /** | |
| * Credit to https://ped.ro/writing/code-blocks-but-better | |
| */ | |
| import { visit } from 'unist-util-visit' | |
| const re = /\b([-\w]+)(?:=(?:"([^"]*)"|'([^']*)'|([^"'\s]+)))?/g | |
| export default (options = {}) => { | |
| return tree => { | |
| visit(tree, 'element', visitor) | |
| } | |
| function visitor(node, index, parentNode) { | |
| let match | |
| if (node.tagName === 'code' && node.data && node.data.meta) { | |
| re.lastIndex = 0 // Reset regex. | |
| while ((match = re.exec(node.data.meta))) { | |
| node.properties[match[1]] = match[2] || match[3] || match[4] || '' | |
| parentNode.properties[match[1]] = match[2] || match[3] || match[4] || '' | |
| } | |
| } | |
| } | |
| } | |