[sa46]

Chrome dev tools are an engineering marvel; the downside is it’s quite hard to find the perfectly shaped tool.

I spent about a week tracking down a memory leak in our web app. About 5 days in I discovered you could compare heap snapshots which led to the root cause of a chrome bug with hidden classes. The fix was to move object spread to the bottom of an object literal.

Here’s the bug. It was a fun one to hunt: https://crbug.com/v8/13303