How to Use Turbopack 0.10 for Fast Refresh in Next.js 15 Apps With 100k+ LOC Large Next.js applications with over 100,000 lines of code (LOC) often face slow build times and laggy hot module replacement (HMR), which hurts developer productivity. Turbopack 0.10, the Rust-based incremental bundler, paired with Next.js 15’s native Turbopack integration, delivers blazing-fast Fast Refresh even for massive codebases. This guide walks through setup, configuration, and optimization for 100k+ LOC projects. What Is Turbopack 0.10? Turbopack 0.10 is the latest stable release of Vercel’s Rust-powered bundler, designed to replace Webpack for Next.js projects. Key updates in 0.10 include improved incremental caching, better large module graph handling, and full compatibility with Next.js 15’s App Router and Server Components. Unlike Webpack, Turbopack only rebuilds the minimal set of files affected by a change, making it ideal for large codebases.…