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fix(beta): toc generation when using MDX components #933

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merged 1 commit into from
Jul 3, 2024
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fix(beta): toc generation when using MDX components #933

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7 changes: 5 additions & 2 deletions processor/plugin/toc.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -52,9 +52,11 @@ export const rehypeToc = ({ components = {} }: Options): Transformer<Root, Root>
};

const MAX_DEPTH = 2;
const getDepth = (el: HastHeading) => parseInt(el.tagName.match(/^h(\d)/)[1]);
const getDepth = (el: HastHeading) => parseInt(el.tagName?.match(/^h(\d)/)[1]);

const tocToHast = (headings: HastHeading[] = []): TocList => {
console.log({ headings });

const min = Math.min(...headings.map(getDepth));
const ast = h('ul') as TocList;
const stack: TocList[] = [ast];
Expand Down Expand Up @@ -86,7 +88,8 @@ export const tocToMdx = (toc: IndexableElements[], components: CustomComponents)
const tree: Root = { type: 'root', children: toc };

visit(tree, 'mdxJsxFlowElement', (node, index, parent) => {
parent.children.splice(index, 1, ...components[node.name].toc);
const toc = components[node.name].toc || [];
parent.children.splice(index, 1, ...toc);
});

const tocHast = tocToHast(tree.children as HastHeading[]);
Expand Down