24 lines
632 B
JavaScript
24 lines
632 B
JavaScript
import { visit } from 'unist-util-visit'
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import { h } from 'hastscript'
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const matcher = (node) =>
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node.type === 'element' &&
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['h1', 'h2', 'h3', 'h4', 'h5', 'h6'].includes(node.tagName) &&
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node.properties?.id
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export default function permalinks() {
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return (tree) => {
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visit(tree, matcher, (node) => {
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const { id } = node.properties
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const text = node.children
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node.properties.tabIndex = -1
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node.children = [
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h('a', { class: 'permalink', href: `#${id}` }, [
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...text,
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h('span', { class: 'permalink-symbol', ariaHidden: 'true' }, [' #']),
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]),
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]
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})
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}
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}
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