add missing component back

apps/web/src/components/ui/prose.tsx

@@ -0,0 +1,111 @@
+import { cn } from "@/utils/ui";
+import rehypeParse from "rehype-parse";
+import { unified } from "unified";
+import { createElement } from "react";
+import type React from "react";
+
+type ProseProps = React.HTMLAttributes<HTMLElement> & {
+	as?: "article";
+	html: string;
+};
+
+type HastTextNode = {
+	type: "text";
+	value: string;
+};
+
+type HastElementNode = {
+	type: "element";
+	tagName: string;
+	properties?: Record<string, unknown>;
+	children?: HastNode[];
+};
+
+type HastRootNode = {
+	type: "root";
+	children?: HastNode[];
+};
+
+type HastNode = HastTextNode | HastElementNode | HastRootNode;
+
+function toReactProps({
+	properties,
+}: {
+	properties: HastElementNode["properties"];
+}): Record<string, unknown> {
+	if (!properties) {
+		return {};
+	}
+
+	const props: Record<string, unknown> = {};
+
+	for (const [propertyName, propertyValue] of Object.entries(properties)) {
+		if (propertyValue === null || propertyValue === undefined) {
+			continue;
+		}
+
+		if (propertyName.startsWith("on")) {
+			continue;
+		}
+
+		if (propertyName === "class") {
+			props.className = Array.isArray(propertyValue)
+				? propertyValue.join(" ")
+				: propertyValue;
+			continue;
+		}
+
+		if (propertyName === "for") {
+			props.htmlFor = propertyValue;
+			continue;
+		}
+
+		props[propertyName] = propertyValue;
+	}
+
+	return props;
+}
+
+function renderHastNode({
+	node,
+	key,
+}: {
+	node: HastNode;
+	key: string;
+}): React.ReactNode {
+	if (node.type === "text") {
+		return node.value;
+	}
+
+	if (node.type !== "element") {
+		return null;
+	}
+
+	const children = (node.children ?? []).map((childNode, index) =>
+		renderHastNode({ node: childNode, key: `${key}-${index}` }),
+	);
+
+	return createElement(node.tagName, { ...toReactProps({ properties: node.properties }), key }, children);
+}
+
+function renderHtmlNodes({ html }: { html: string }): React.ReactNode {
+	const rootNode = unified().use(rehypeParse, { fragment: true }).parse(html) as HastRootNode;
+	return (rootNode.children ?? []).map((childNode, index) =>
+		renderHastNode({ node: childNode, key: `prose-node-${index}` }),
+	);
+}
+
+function Prose({ children, html, className }: ProseProps) {
+	return (
+		<article
+			className={cn(
+				"prose prose-h2:font-semibold prose-h1:text-xl prose-a:text-blue-600 prose-p:first:mt-0 dark:prose-invert mx-auto max-w-none px-2",
+				className,
+			)}
+		>
+			{html ? renderHtmlNodes({ html }) : children}
+		</article>
+	);
+}
+
+export default Prose;