rehype-title.ts
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rehype-title.ts
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	import type { Root } from "npm:@types/hast";
	import type { VFile } from "vfile";
	import { SKIP, visit } from "unist-util-visit";
	import { toString } from "hast-util-to-string";

	export default function rehypeTitle() {
	return function (tree: Root, file: VFile) {
	visit(tree, "element", function (node, index, parent) {
	if (node.tagName === "h1" && !file.data.title) {
	file.data.title = toString(node);

	parent!.children.splice(index!, 1);
	return [SKIP, index];
	}
	});
	};
	}

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