fix: improper rendering of text blocks in PDFs

packages/pdf/src/templates/shared/rich-text-html.ts

@@ -0,0 +1,65 @@
+import type { Node } from "node-html-parser";
+import { NodeType, parse } from "node-html-parser";
+
+const inlineTags = new Set([
+	"a",
+	"abbr",
+	"b",
+	"br",
+	"button",
+	"cite",
+	"code",
+	"dfn",
+	"em",
+	"i",
+	"label",
+	"q",
+	"s",
+	"span",
+	"strong",
+	"sub",
+	"sup",
+	"u",
+]);
+
+const getTagName = (node: Node) => node.rawTagName.toLowerCase();
+
+const hasBlockDescendant = (node: Node): boolean =>
+	node.childNodes.some((child) => child.nodeType === NodeType.ELEMENT_NODE && !isInlineNode(child));
+
+const isInlineNode = (node: Node): boolean => {
+	if (node.nodeType === NodeType.TEXT_NODE || node.nodeType === NodeType.COMMENT_NODE) return true;
+	if (node.nodeType !== NodeType.ELEMENT_NODE) return false;
+
+	return inlineTags.has(getTagName(node)) && !hasBlockDescendant(node);
+};
+
+export const normalizeRichTextHtml = (html: string): string => {
+	const root = parse(html.trim(), { comment: false });
+	const normalized: string[] = [];
+	let inlineNodes: string[] = [];
+
+	const flushInlineNodes = () => {
+		const inlineHtml = inlineNodes.join("").trim();
+
+		if (inlineHtml) normalized.push(`<p>${inlineHtml}</p>`);
+
+		inlineNodes = [];
+	};
+
+	for (const node of root.childNodes) {
+		const nodeHtml = node.toString();
+
+		if (isInlineNode(node)) {
+			inlineNodes.push(nodeHtml);
+			continue;
+		}
+
+		flushInlineNodes();
+		normalized.push(nodeHtml);
+	}
+
+	flushInlineNodes();
+
+	return normalized.join("");
+};