TypeScript Academy · Lesson

Incremental Builds and Cache in Monorepos

Optimize build times with incremental compilation and Turborepo.

Why Incremental Builds Matter

In large monorepos, rebuilding every package on every change is slow. Incremental builds detect what changed and only recompile affected packages.

# Without incremental: all 20 packages rebuild every time
# With incremental: only 2 changed packages rebuild

Enable "incremental": true in tsconfig to generate a .tsbuildinfo file that caches the previous build state for fast re-runs.

{
  "compilerOptions": {
    "incremental": true,
    "tsBuildInfoFile": "./.tsbuildinfo"
  }
}