When working on large Svelte or SvelteKit projects, it's important to organize your code for maintainability, scalability, and clarity. A well-structured project separates concerns, makes components reusable, and organizes routes, stores, and utilities effectively.
Use the SvelteKit file-based routing system to organize pages. Nested folders create nested routes. Use +page.svelte for the page component and +page.js or +page.server.js for data loading.
Keep reusable UI elements in the lib/components/ folder. Break complex UI into smaller, self-contained components. Use bind:this or props to communicate with parent components when needed.
Centralize shared state in lib/stores/. Use writable, readable, or derived stores for reactive state management. Keep stores small and focused to avoid coupling unrelated features.
Put reusable functions, formatters, or constants in lib/utils/. This helps reduce duplication and keeps your logic modular.
Use scoped styles inside components or global CSS in src/app.css. For larger projects, consider CSS modules, TailwindCSS, or Svelte preprocessors for consistent styling.
Organize routes, components, stores, and utilities clearly.
Break UI into small, reusable components.
Use SvelteKit’s file-based routing for nested routes.
Centralize shared state in stores and avoid prop-drilling.
Keep styles modular and consistent across components.
Write unit tests and use consistent code conventions for maintainability.