Posts tagged “build-performance”
2 posts found
TypeScript 6.0 isolatedDeclarations: What It Actually Replaces and Why It Matters
July 5, 2026
TypeScript 6.0's isolatedDeclarations replaces the type checker bottleneck in .d.ts generation, enabling parallel builds and sub-second declaration emit in monorepos.
typescriptbuild-performancetype-definitions+2
TypeScript isolatedDeclarations Deep Dive: Parallel d.ts Emit and What Library Authors Must Change
June 16, 2026
The isolatedDeclarations flag unlocks parallel declaration emit but breaks type inference. Here's what library authors must change and why the performance gains matter for monorepos.
typescriptbuild-performancemonorepo+2