();
+
+function buildPipeline({
+ attachments,
+ disableMath = false
+}: MarkdownProcessorOptions): MarkdownProcessor {
+ // eslint-disable-next-line @typescript-eslint/no-explicit-any
+ let proc: any = remark().use(remarkGfm); // GitHub Flavored Markdown
+
+ if (!disableMath) {
+ proc = proc.use(remarkMath); // Parse $inline$ and $$block$$ math
+ }
+
+ proc = proc
+ .use(remarkBreaks) // Convert line breaks to
+ // Treat raw HTML as literal text with preserved indentation
+ .use(remarkLiteralHtml)
+ .use(remarkRehype); // Convert Markdown AST to rehype
+
+ if (!disableMath) {
+ proc = proc.use(rehypeKatex); // Render math using KaTeX
+ }
+
+ const pipeline = proc
+ .use(rehypeHighlight, {
+ aliases: { [FileTypeText.XML]: [FileTypeText.SVELTE, FileTypeText.VUE] },
+ languages: lowlightAll
+ }) // Add syntax highlighting
+ .use(rehypeRestoreTableHtml) // Restore limited HTML (e.g.
, ) inside Markdown tables
+ .use(rehypeEnhanceLinks) // Add target="_blank" to links
+ .use(rehypeFileBadge) // Render file:// anchors as inline badge chips
+ .use(rehypeMermaidPre) // Convert mermaid blocks to
+ .use(rehypeSvgPre) // Convert svg blocks to
+ .use(rehypeEnhanceCodeBlocks) // Wrap code blocks with header and actions
+ .use(rehypeEnhanceMermaidBlocks) // Wrap mermaid blocks with header and actions
+ .use(rehypeEnhanceSvgBlocks) // Wrap svg blocks with header and actions
+ .use(rehypeResolveAttachmentImages, { attachments })
+ .use(rehypeRtlSupport) // Add bidirectional text support
+ .use(rehypeStringify, { allowDangerousHtml: true }); // Convert to HTML string
+
+ return pipeline as MarkdownProcessor;
+}
+
+export function getMarkdownProcessor(options: MarkdownProcessorOptions): MarkdownProcessor {
+ if (options.attachments && options.attachments.length > 0) {
+ let cached = attachmentPipelines.get(options.attachments);
+
+ if (!cached) {
+ cached = buildPipeline(options);
+ attachmentPipelines.set(options.attachments, cached);
+ }
+
+ return cached;
+ }
+
+ const key = String(Boolean(options.disableMath));
+
+ let cached = sharedPipelines.get(key);
+
+ if (!cached) {
+ cached = buildPipeline(options);
+ sharedPipelines.set(key, cached);
+ }
+
+ return cached;
+}