KIMJINWOO4 Build Tooling Skill
Baseline as of 2026-07: Vite 8 (Rolldown default) · Vitest 4 (v5 in beta) · pnpm 11 · tsdown 0.22 · Turborepo 2.10 · TypeScript 7 (native compiler).
Reference Map
Read the reference for the tool you are working on to load detailed knowledge.
| Tool | Description | Entry point |
|---|---|---|
| Vite | Build config, plugin API, SSR, Rolldown migration | vite-guide → vite/ |
| Vitest | Unit testing, mocking, coverage, test filtering | vitest-guide → vitest/ |
| tsdown | TS/JS library bundling, DTS generation, tsup migration | tsdown-guide → tsdown/ |
| pnpm | Package management, workspaces, catalogs, patches | pnpm-guide → pnpm/ |
| Turborepo | Monorepo build system, tasks, caching, CI | turborepo-guide → turborepo/ |
| TypeScript 7 | Native (Go) compiler, migration from TS 5.x, perf notes | typescript-7 |
2026 defaults for new projects
- Vite 8: Rolldown is the only bundler — no opt-in, no esbuild/Rollup split. Most Rollup plugins work unchanged.
- Vitest 4 stable; Vitest 5 (beta) tracks Vite 8 — prefer 4.x until 5 stabilizes.
- pnpm 11 with workspace catalogs for version consistency.
- Libraries: tsdown (Rolldown-based) instead of tsup.
- Type-checking: TypeScript 7 (
tsgo) — ~10x faster; keep 5.x/6.x only if a toolchain dependency requires the JS API.