chore: render katex in markdown

src/components/markdown-viewer/utils.ts

@@ -14,3 +14,42 @@ export const unescape = (str = '') => {
     ? str.replace(reEscapedHtml, (entity) => htmlUnescapes[entity] || "'")
     : str;
 };
+
+export function escapeDollarNumber(text: string) {
+  let escapedText = '';
+
+  for (let i = 0; i < text.length; i += 1) {
+    let char = text[i];
+    const nextChar = text[i + 1] || ' ';
+
+    if (char === '$' && nextChar >= '0' && nextChar <= '9') {
+      char = '\\$';
+    }
+
+    escapedText += char;
+  }
+
+  return escapedText;
+}
+
+export function escapeBrackets(text: string) {
+  const pattern =
+    /(```[\S\s]*?```|`.*?`)|\\\[([\S\s]*?[^\\])\\]|\\\((.*?)\\\)/g;
+  return text.replaceAll(
+    pattern,
+    (match, codeBlock, squareBracket, roundBracket) => {
+      if (codeBlock) {
+        return codeBlock;
+      } else if (squareBracket) {
+        return `$$${squareBracket}$$`;
+      } else if (roundBracket) {
+        return `$${roundBracket}$`;
+      }
+      return match;
+    }
+  );
+}
+
+export function escapeMhchem(text: string) {
+  return text.replaceAll('$\\ce{', '$\\\\ce{').replaceAll('$\\pu{', '$\\\\pu{');
+}