feat: support markdown

ui/components/Markdown/parser/index.ts

@@ -0,0 +1,20 @@
+import { Paragraph, ParagraphType, Root, TextType } from "@yozora/ast";
+import { GfmExParser as Parser } from "@yozora/parser-gfm-ex";
+
+export const parser = new Parser({
+  defaultParseOptions: {
+    shouldReservePosition: false,
+  },
+});
+
+export const hasHighlightContent = (content: string): boolean => {
+  const data: Root = parser.parse(content);
+  if (data.children.length === 0) return false;
+  for (const node of data.children) {
+    if (node.type !== ParagraphType) return true;
+
+    const paragraph = node as Paragraph;
+    if (paragraph.children.some(v => v.type !== TextType)) return true;
+  }
+  return false;
+};