The Layers of Abstraction Will Kill You
Two long hours to debug a simple "command not found."
The actual problem was buried four dependencies deep. An image library couldn't build native bindings for my specific Node + ARM combo, and when it failed, npm silently rolled back the entire install while reporting success. That's the trap with a tall stack of abstractions: each layer is one more place errors get swallowed.
The fix took 30 seconds once I found it. The developers I trust most can drop down a layer when something breaks, which means knowing what each layer is actually doing.