1. You’ve Experienced the "It Works in Chrome" Fallacy
You aren’t a real frontend engineer until you’ve spent six hours debugging a layout issue that only appears on a specific version of Safari, or realized that your beautiful, modern CSS grid breaks entirely on a browser version your client refuses to sunset.
The Lesson: You stop fighting the browser and start building resilient, progressive enhancements.
2. You’ve Cried Over a Z-Index Issue
There is a unique type of pain that comes from a modal that refuses to stay on top, or a dropdown hiding behind a container you didn't even know existed.
The Lesson: You’ve moved from "just adding more layers" to actually understanding stacking contexts.
3. You’ve Deleted node_modules Out of Pure Desperation
You’ve reached that point where nothing makes sense, the cache is haunted, and the only solution left in the universe is rm -rf node_modules && npm install.
The Lesson: You know that sometimes, the only way forward is a clean slate.
4. You Know That "Performance" Isn't Just Lighthouse Scores
You’ve realized that a 100/100 Lighthouse score is meaningless if the user feels like the site is slow. You’ve obsessed over layout shifts, unnecessary re-renders, and the difference between "technically loaded" and "actually usable."
The Lesson: You build for human perception, not just for bot metrics.
5. You’ve Had an "Aha!" Moment With Accessibility
You weren't a real engineer when you first started; you were just a coder. You became a real engineer the day you realized that a div is not a button, that color contrast isn't just a design choice, and that the web must work for everyone, regardless of their input device.
The Lesson: You view accessibility as a core feature, not an afterthought.
6. You’ve Learned to Love (and Hate) State Management
Whether it’s prop-drilling, Redux, Context API, or Server State (React Query), you’ve built a massive, tangled mess of state, burned it down, and built it again—better.
The Lesson: You know that the best state management is often the state you don’t have to manage at all.
7. You’ve Realized That "Perfect Code" Doesn't Ship
You’ve spent weeks perfecting a component, only to realize the business requirements changed overnight. You’ve learned the hard lesson that shipping "good enough" today is infinitely better than shipping "perfect" never.
The Lesson: You understand that code is a tool to solve business problems, not a piece of art to be framed.
