Writing Clean, Maintainable React in 2024

The short answer: clean React isn't clever abstraction — it's code the next person can open and understand without a tour. In practice that means colocating related code, pushing logic into custom hooks, using early returns to kill nesting, and resisting abstraction until the third real use.

After eight years of writing React — and the last few leading teams who write a lot more of it than I do — I've stopped believing "clean code" is about clever abstractions. It's about the next person (often me, six months later) being able to open a file and understand it without a tour. Here are the patterns that actually move that needle.

Colocate first, abstract later

The single biggest readability win is keeping related code close. A component's state, its handlers, and the markup that uses them belong in the same file until there's a concrete reason to split them. Premature extraction into a utils/, helpers/, and hooks/ sprawl just means every feature is now a scavenger hunt across the tree.

My rule of thumb: don't extract until you have the third use, or until a single file crosses roughly 200 lines and has two clearly separate responsibilities. The "rule of three" sounds arbitrary, but it reliably stops me from building the wrong abstraction around one example.

Push logic into custom hooks, not components

When a component is doing both data orchestration and rendering, the render gets buried. Lifting the orchestration into a hook makes the component read like a description of the UI.

The component that consumes this never touches a query key, a debounce timer, or a loading flag by hand. It asks for guests, isLoading, isEmpty — the vocabulary of the feature, not the plumbing.

Early returns beat nested ternaries

Loading and error states are where JSX goes to die. A pyramid of isLoading ? ... : isError ? ... : data ? ... is unreadable. Handle the exceptional states up top and return early, so the "happy path" markup lives at the bottom with zero indentation.

Name booleans for the question they answer

open, flag, data2 — I've shipped all of them and regretted each. A boolean should read as the condition at its call site: isCheckedIn, hasUnpaidBalance, canEditReply. When the name is a yes/no question, the if statement explains itself and the comment you were about to write becomes unnecessary.

Know when to stop

The failure mode senior engineers fall into isn't messy code — it's over-engineered code. A generic <DataTable<T>> with twelve configuration props, a factory that builds hooks, an abstraction layered on a single caller. Every indirection you add is a tax the whole team pays on every read.

Clean code is the code that's easy to delete. Optimize for the reader, keep things local until duplication forces your hand, and resist the urge to generalize from one example. The best abstraction is often the one you didn't write.