nestjs

Resolve NestJS Prisma 7 upgrade error: ERR_MODULE_NOT_FOUND for app.module after successful build. Configure tsconfig.json to CommonJS, handle Prisma client generation, and fix module resolution for runtime compatibility.

Implement Excel (.xlsx) bank statement upload from Next.js to NestJS. Parse rows to JSON with exceljs or xlsx, validate data, map columns to DB fields, and persist using Prisma or TypeORM. Best practices for large files.