This article was originally published on AI Study Room . For the full version with working code examples and related articles, visit the original post. Monorepo Setup Guide: Turborepo + pnpm + TypeScript in 30 Minutes A monorepo lets you share code between apps (web, mobile, docs) and packages (shared utils, configs, UI components) in a single repository. Turborepo + pnpm + TypeScript is the modern stack. Here's how to set it up in 30 minutes. Why a Monorepo? Problem Monorepo Solution Duplicate tsconfig, ESLint config, etc. in 5 repos One shared config package. Update once, all apps get it. Copy-pasting UI components between apps Shared UI package. One component, used everywhere. Can't refactor across apps safely TypeScript validates ALL consumers when you change a shared package. CI runs unrelated changes on every commit Turborepo caches tasks. Only changed packages rebuild. Step-by-Step Setup # 1. Create the monorepo structure mkdir my-monorepo && cd my-monorepo pnpm init 2.…