43. Architecture & Folder Structure
Organizing Code for Scale
When you are building a massive application (like an e-commerce platform with hundreds of components), a messy folder structure will destroy your team's productivity. You will spend more time searching for files than writing code. Professional architecture is about predictability and Separation of Concerns.
The Anti-Pattern: Type-Based Architecture
Beginners often group files by their type. They create a folder for all `components`, a folder for all `hooks`, and a folder for all `api` calls. This is terrible for scaling. If you want to delete the "User Profile" feature, you have to hunt down its specific files across ten different folders.
The Standard: Feature-Based Architecture
Instead of grouping by file type, you group by Business Feature. Everything related to Authentication lives in one folder. If you delete that folder, the entire feature is cleanly removed.
Absolute Imports
Never use relative imports like import Button from '../../../../components/Button'. If you move the file, the path breaks. Configure Absolute Imports in your tsconfig.json so you can import from the root.
Barrel Files (index.ts)
To keep import statements clean, use a Barrel File. Inside your components folder, create an index.ts file that exports everything inside that folder.
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