I Spent 3 Hours Debugging Why Google Couldn't Read My Sitemap. Then I Found an SEO Sitemap Library for TypeScript That Fixed It (opens in new tab)

I spent 3 hours debugging why Google Search Console kept showing "Couldn't fetch" on a sitemap that looked completely normal in my browser. The XML rendered fine. Every URL in it worked when I clicked them one by one. The actual problem was one unescaped & buried in product entry #4,312. That single character was enough to invalidate the entire file, not just that one row. By the end of this post, you'll know how to generate a sitemap in TypeScript that can't break that way, how to scale it p...