Why Front-End Codebases Become Unreadable and How to Build Ones That Last

A long-running DEV Community series on front-end architecture argues that code longevity depends not on technology choices but on legibility — the ability of a future developer to reconstruct why decisions were made. The author observes that teams routinely lose the reasoning behind sound technical decisions the moment the people who made them move on, even when the code itself continues to function. Across twelve articles, the series examined mechanisms such as CSS resets, layering, specificity, and state management through the lens of a single principle: decisions should be declared and checkable rather than implicit and memorized. Practical examples, like annotating a CSS rule with its intent versus leaving it uncommented, illustrate how the same code can either preserve or erase its own rationale. The series concludes that the real goal was never to introduce a new framework but to encourage developers to use the existing web platform in ways that remain self-explanatory long after the original authors have moved on.