initial commit

src/markdown.js

@@ -0,0 +1,67 @@
+export function markdownToHTML(text) {
+  // 0) Remove <think>...</think>/<thinking>...</thinking> blocks
+  text = text.replace(
+    /(^|\n)\s*<think>[\s\S]*?<\/think(?:ing)?>\s*(\n\s*\n)?/gi,
+    (_, lead) => (lead ? '\n' : '')
+  );
+
+  // 1) Normalize line endings
+  let tmp = text.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
+
+  // 2) Extract code blocks and replace with placeholders
+  const codeblocks = [];
+  const placeholder = idx => `@@CODEBLOCK${idx}@@`;
+  tmp = tmp.replace(/```(\w*)\n([\s\S]*?)```/g, (_, lang, code) => {
+    codeblocks.push({ lang, code });
+    return placeholder(codeblocks.length - 1);
+  });
+
+  // 3) HTML-escape special characters
+  let escaped = tmp
+    .replace(/&/g, "&")
+    .replace(/</g, "<")
+    .replace(/>/g, ">");
+
+  // 4) Headings
+  escaped = escaped
+    .replace(/^#### (.+)$/gm, "<h4>$1</h4>")
+    .replace(/^### (.+)$/gm, "<h3>$1</h3>")
+    .replace(/^## (.+)$/gm,  "<h2>$1</h2>")
+    .replace(/^# (.+)$/gm,   "<h1>$1</h1>");
+
+  // 4.5) Unordered lists
+  escaped = escaped.replace(
+    /(^|\n)([ \t]*\* .+(?:\n[ \t]*\* .+)*)/g,
+    (_, lead, listBlock) => {
+      const items = listBlock
+        .split(/\n/)
+        .map(line => line.replace(/^[ \t]*\*\s+/, '').trim())
+        .map(item => `<li>${item}</li>`)
+        .join('');
+      return `${lead}<ul>${items}</ul>`;
+    }
+  );
+
+  // 5) Bold, italic, inline code
+  let html = escaped
+    .replace(/\*\*(.+?)\*\*/g, "<b>$1</b>")
+    .replace(/(?<!\*)\*(.+?)\*(?!\*)/g, "<i>$1</i>")
+    .replace(/`(.+?)`/g, "<code>$1</code>");
+
+  // 6) Restore code blocks
+  html = html.replace(/@@CODEBLOCK(\d+)@@/g, (_, idx) => {
+    const { lang, code } = codeblocks[+idx];
+    const escapedCode = code.replace(/</g, "<").replace(/>/g, ">");
+    return `<pre><code class="language-${lang}">${escapedCode}</code></pre>`;
+  });
+
+  // 7) Convert line-breaks to <br>
+  html = html.replace(/\n/g, "<br>");
+
+  // 8) Cleanup stray <br> immediately before/after lists
+  html = html
+    .replace(/<br>\s*(<ul>)/g, "$1")
+    .replace(/(<\/ul>)\s*<br>/g, "$1");
+
+  return html;
+}