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Code written by AI tends to clump together into single scripts. Massive monolithic object patterns are created, breaking the existing structure. This is why developers with 3 to 7 years of experience spend up to 8 hours a week just debugging, as they skip refactoring and keep piling on code.
Create a .cursor/rules directory at the project root and place .mdc rule files inside. Turn on the alwaysApply: true option in your core architecture guideline file. Fix the dependency direction in the order of Presentation -> Application -> Domain -> Infrastructure. Restrict file lengths so they do not exceed 150 lines.
When fixing already tangled components, enter three prompts in sequence. First, analyze the legacy code to extract types. Next, detach the business logic into a 100-line custom hook. Finally, bundle Vitest and MSW to extract unit test code. Going through this process drops debugging time to under 3 hours a week.
TypeScript compilers alone cannot catch all API response errors or conditional logic bugs thrown by AI. You must tightly lock down types at the runtime boundary. Create a schema layer using Zod and Effect. Zod handles external API validation, while Effect manages internal domain logic.
Set up the framework so that Zod schemas are declared first. Have the AI write a Zod schema for validating user profile update API inputs first. Then, ask it to implement a service function that receives that schema and those types to update the DB. Combine parsing logic that throws a 400 error if validation fails.
Connect Dependency-Cruiser to the CI pipeline to block flawed code from entering the main branch. Write rules prohibiting circular dependencies and layer violations in your .dependency-cruiser.cjs configuration file. Embed the npx depcruise --config .dependency-cruiser.cjs src command into your GitHub Actions. Architecture-violating code is automatically filtered out at the pull request stage.
Due to limitations in its training data, AI mixes old-version syntax when using the latest frameworks like Svelte 5 or Next.js 14. This is a primary cause of build errors. You must compress the core migration guides from the official documentation and push them into the context.
Carve out a separate document repository inside the project for the latest tech specs. Create a .docs folder at the project root and save migration guides as markdown. Clear out noise by listing node modules and build folders in the .cursorignore file. Prompt the AI by directly pointing to the @.docs/svelte5-migration.md document to induce code using the latest syntax. The time spent wandering around trying to fix old-version syntax errors disappears.
