Whatever autocomplete casino your team is using this week, the bug report still lands on your desk like you wrote it yourself. Here's how to debug code you didn't write (and didn't break). trackjs.com/blog/how-to-debug-code-you-didnt-write/ #JavaScript #debugging

Vibe coding ships fast. Then prod finds the one weird browser + slow network combo and your “looks fine” code catches fire. You can’t code review vibes, you need production visibility. trackjs.com/blog/who-wat... #JavaScript #WebDev

Safari throwing “undefined is not an object (evaluating 'window.webkit.messageHandlers')”? It’s not random. It’s WKWebView doing WKWebView things. What it means, why it happens, and how to fix it: trackjs.com/javascript-e... #javascript #safari

Unexpected end of input errors in production? Your code is fine. The server returned nothing when your JSON parser expected data. Empty responses, HTML error pages, truncated network calls. trackjs.com/javascript-e... #JavaScript #WebDev

Firefox throws "undefined has no properties" when you destructure null or undefined. It's the least helpful error message of all browsers for this problem. What's happening and how to fix it: trackjs.com/javascript-e... #JavaScript #Firefox

Destructuring fails loud. That's actually good. Unlike dot notation that silently returns undefined, destructuring throws immediately when data is missing. Catches bugs faster. trackjs.com/javascript-e... #javascript #webdev

"Right side of assignment cannot be destructured" is Safari's way of saying you tried to destructure null or undefined. Chrome tells you which property failed. Safari makes you guess. trackjs.com/javascript-errors/right-side-of-assignment-cannot-be-destructured/ #javascript #webdev

Seeing a sudden spike of 404 errors for ads.txt, security.txt, and /.well-known/ files? It's probably @httparchive.org Almanac scanning with WebPageTest Not a bug, just bot noise. trackjs.com/javascript-e... #javascript #webdev

"Cannot read properties of null (reading 'length')" is everywhere. That null tells you something: an API returned "not found." Here's how to track it down and fix it. trackjs.com/javascript-errors/cannot-read-properties-of-null-reading-length/ #javascript #webdev

The worst JavaScript errors are the ones you can't see. "Invalid or unexpected token" usually means invisible characters snuck into your code. Smart quotes from Slack, zero-width spaces, BOM markers. trackjs.com/javascript-e... #javascript #webdev

Safari's "string did not match the expected pattern" is infuriating. One vague message for five different problems. CSS selectors, JSON parsing, DOM values, all the same unhelpful text. trackjs.com/javascript-e... #JavaScript #Safari

Most JavaScript errors in your monitoring dashboard are garbage. Browser extensions, ad blockers, crawlers. Here's how I set up TrackJS to ignore the noise and only alert on real bugs that matter. www.youtube.com/watch?v=HBaZ... #javascript #errormonitoring

Your JavaScript tried to use localStorage in a sandboxed iframe and now the browser is yelling at you. "The operation is insecure" is rarely a real bug, it's just browsers being paranoid about security contexts. trackjs.com/javascript-errors/the-operation-is-insecure/ #JavaScript #WebDev

Your monitoring dashboard flooded with Facebook Privacy Sandbox errors? They're not bugs. They're privacy tools doing their job. Stop wasting time fixing user privacy choices. trackjs.com/javascript-e... #JavaScript #WebDev

MetaMask throwing connection errors in your logs? You're not alone. These extension errors pollute your monitoring with noise that isn't even your fault. We show you how to filter them out automatically. Read more: trackjs.com/javascript-e... #JavaScript #WebDev

$ is not defined. I have seen this error so many times. Here's how to fix it. trackjs.com/javascript-e...

I have no idea if this works, but I did my very first Press Release today! I'm not really sure what to expect with it -- probably nothing lol. But I think we're doing something really interesting with @certkit.io . www.einpresswire.com/article/8583...

I wrote up a debug log on one of my "favorite" errors of all time: Unexpected Token: '<' It's currently the #15 most common error on the Internet. trackjs.com/javascript-e... #javascript #webdev #debugging

Eric from TrackJS talks through the design process of the 2025 reskin project. youtube.com/shorts/UVk5g...

Jordan celebrates finally getting rid of bootstrap styles in the TrackJS redesign. youtube.com/shorts/2vkdD... Learn more about the TrackJS redesign 👇 trackjs.com/blog/a-fresh...

That moment when your Lighthouse score is 💯 but users are still complaining about slow pages... Stop guessing, start measuring what they actually experience. https://requestmetrics.com/web-performance/you-need-rum-to-understand-web-perf/ #WebDev #Performance

Eric from TrackJS talks about the most-requested feature from the redesign project: Dark Mode. youtube.com/shorts/NT2Am... Learn more about our redesign 👇 trackjs.com/blog/a-fresh... #video #code #javascript #design

Jordan Griffin discusses lowering the barrier to getting user feedback during the redesign of ⁨TrackJS⁩ . youtube.com/shorts/e4URn... Learn more about the TrackJS redesign 👇 trackjs.com/blog/a-fresh...

We recently launched a totally redesigned UI for TrackJS. Here's our CTO Eric talking about what we learned from it. www.youtube.com/shorts/Je8TN...

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