fix(mdx): robust parsing for payload data and ignore sentry pipe noise

lib/blog.ts

@@ -65,11 +65,8 @@ export async function getPostBySlug(slug: string, locale: string): Promise<PostD
     const fileContent = await fs.readFile(filePath, 'utf-8');
     const { data, content } = matter(fileContent);
 
-    // Fix MDX data props dropped by next-mdx-remote
+    const { fixMdxDataProps } = await import('./mdx-utils');
-    // Payload serializes as data={{"items":...}} which Acorn treats as a Block statement.
+    const fixedContent = fixMdxDataProps(content);
-    const fixedContent = content.replace(/data=\{\{([\s\S]*?)\}\}/g, (match, p1) => {
-      return 'data="{' + p1.replace(/"/g, '&quot;') + '}"';
-    });
 
     let parsedContent = fixedContent;
     try {

lib/mdx-utils.ts

@@ -0,0 +1,46 @@
+export function fixMdxDataProps(content: string): string {
+  let fixedContent = content;
+  let dataIndex = fixedContent.indexOf('data={{');
+
+  while (dataIndex !== -1) {
+    let openCount = 0;
+    let endIndex = -1;
+    const startObj = dataIndex + 6; // index of the first '{' in 'data={{'
+
+    for (let i = startObj; i < fixedContent.length; i++) {
+      if (fixedContent[i] === '{') {
+        openCount++;
+      } else if (fixedContent[i] === '}') {
+        openCount--;
+        if (openCount === 0) {
+          endIndex = i;
+          break;
+        }
+      }
+    }
+
+    if (endIndex !== -1) {
+      // jsonStr is the content INSIDE the outer curly braces
+      const jsonStr = fixedContent.substring(startObj + 1, endIndex);
+      const safeJsonStr = jsonStr.replace(/"/g, '&quot;');
+      const replacement = `data="{${safeJsonStr}}"`;
+
+      // We also need to consume the closing `}` of the `data={{`
+      const nextCharIndex = endIndex + 1;
+      const skipChars =
+        nextCharIndex < fixedContent.length && fixedContent[nextCharIndex] === '}' ? 2 : 1;
+
+      fixedContent =
+        fixedContent.substring(0, dataIndex) +
+        replacement +
+        fixedContent.substring(endIndex + skipChars);
+
+      dataIndex = fixedContent.indexOf('data={{', dataIndex + replacement.length);
+    } else {
+      // Malformed braces, prevent infinite loop
+      break;
+    }
+  }
+
+  return fixedContent;
+}

lib/pages.ts

@@ -53,11 +53,8 @@ export async function getPageBySlug(slug: string, locale: string): Promise<PageD
     const fileContent = await fs.readFile(filePath, 'utf-8');
     const { data, content } = matter(fileContent);
 
-    // Fix MDX data props dropped by next-mdx-remote
+    const { fixMdxDataProps } = await import('./mdx-utils');
-    // Payload serializes as data={{"items":...}} which Acorn treats as a Block statement.
+    const fixedContent = fixMdxDataProps(content);
-    const fixedContent = content.replace(/data=\{\{([\s\S]*?)\}\}/g, (match, p1) => {
-      return 'data="{' + p1.replace(/"/g, '&quot;') + '}"';
-    });
 
     let parsedContent = fixedContent;
     try {

lib/products.ts

@@ -39,11 +39,8 @@ export async function getProductBySlug(slug: string, locale: string): Promise<Pr
     const fileContent = await fs.readFile(filePath, 'utf-8');
     const { data, content } = matter(fileContent);
 
-    // Fix MDX data props dropped by next-mdx-remote
+    const { fixMdxDataProps } = await import('./mdx-utils');
-    // Payload serializes as data={{"items":...}} which Acorn treats as a Block statement.
+    const fixedContent = fixMdxDataProps(content);
-    const fixedContent = content.replace(/data=\{\{([\s\S]*?)\}\}/g, (match, p1) => {
-      return 'data="{' + p1.replace(/"/g, '&quot;') + '}"';
-    });
 
     let parsedContent = fixedContent;
     try {

sentry.edge.config.ts

@@ -12,4 +12,5 @@ Sentry.init({
 
   // Setting this option to true will print useful information to the console while you're setting up Sentry.
   debug: false,
+  ignoreErrors: ['failed to pipe response'],
 });

sentry.server.config.ts

@@ -12,4 +12,5 @@ Sentry.init({
 
   // Setting this option to true will print useful information to the console while you're setting up Sentry.
   debug: false,
+  ignoreErrors: ['failed to pipe response'],
 });

tests/mdx-regex.test.ts

@@ -0,0 +1,17 @@
+import { describe, it, expect } from 'vitest';
+import { fixMdxDataProps } from '../lib/mdx-utils';
+
+describe('MDX Data Props Fixer', () => {
+  it('should correctly parse MDX with nested JSON containing }}', () => {
+    // This string simulates the exact structure that causes the bug in n2x2y.mdx
+    const mdxInput = `<Block type="productTabs" data={{"content":{"root":{"children":[]}},"id":"123"}} />`;
+
+    const result = fixMdxDataProps(mdxInput);
+
+    // The expected output should have the entire JSON object enclosed in data="{...}"
+    // and NO trailing characters left over from the regex truncating early.
+    const expected = `<Block type="productTabs" data="{&quot;content&quot;:{&quot;root&quot;:{&quot;children&quot;:[]}},&quot;id&quot;:&quot;123&quot;}" />`;
+
+    expect(result).toBe(expected);
+  });
+});