Turborepo Monorepo with Claude Code: Shared Types, Build Cache, and pnpm Workspace

Managing frontend and backend in separate repositories sounds clean — until you change an API response shape and spend two hours syncing type definitions across three repos. Turborepo consolidates everything into a single repository with intelligent build caching. Claude Code reads your CLAUDE.md and generates the entire monorepo design from scratch. Here's how it works. What You Tell Claude Code (CLAUDE.md) ## Monorepo Structure - apps/ — deployable applications - api/ — Express backend - web/ — Next.js frontend - admin/ — React admin panel - packages/ — shared internal libraries - types/ — shared TypeScript types (API contracts) - ui/ — shared UI components - config/ — shared ESLint, TypeScript configs ## Turbo Pipeline Rules - ^build means upstream packages must build first before this app builds - outputs specify what directories Turbo should cache - CI: use remote cache + --filter to build only affected packages - dev tasks are persistent (long-running, never complete) ## Dependen