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Add vercel.json to set root directory for Next.js project.
…causing build failures due to missing dependencies like dotenv. This commit fixes the issue reported at tsconfig.json:19 ## Bug Explanation The root `tsconfig.json` for the Next.js application uses the glob pattern `"include": ["**/*.ts", "**/*.tsx"]` which recursively includes all TypeScript files in the project directory. However, the `exclude` array only contained `"node_modules"`. The repository contains three separate applications: 1. The root Next.js application (deployed to Vercel) 2. A separate Express backend in `backend/` with its own `package.json` and dependencies (including `dotenv`) 3. A separate Vite React frontend in `frontend/` with its own `package.json` and dependencies When Next.js runs its build, it type-checks all files included in the tsconfig. Since `backend/src/environments.ts` imports `dotenv` but `dotenv` is not a dependency of the root Next.js project, the build fails with: ``` Type error: Cannot find module 'dotenv' or its corresponding type declarations. ``` This is a configuration issue where the root Next.js project's tsconfig inadvertently includes files from independent sub-projects that have different dependency graphs. ## Fix Explanation The fix adds `"backend"` and `"frontend"` to the `exclude` array in `tsconfig.json`: ```json "exclude": ["node_modules", "backend", "frontend"] ``` This ensures that the root Next.js project only type-checks its own TypeScript files and doesn't attempt to compile files from the separate backend and frontend applications. Each of those sub-projects has its own `tsconfig.json` for their respective builds. After the fix: - `pnpm exec tsc --noEmit` passes without errors - `pnpm exec next build` completes successfully Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com> Co-authored-by: cipollas <diegogenerali2@gmail.com>
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