Given the push toward FP principles in JS, it’s become much easier to mete through library code since now we don’t have to assume some reference is getting clobbered somewhere, and we’re not monkey patching some base library. Those were the bad ol days of browser disparity and (let’s face it) IE.

Now, not all libraries are built with modern principles, but I’ve found digging through the source is not nearly as onerous as it used to be (as long as you avoid tooling like yarn PnP, which basically undermines your entire ability to inspect library code just so you can… avoid unzipping archives?)