Michał Pierzchała cd0cd16a9e build: migrate the library build from rslib to tsdown (Rolldown) (#1087) ...

* build: migrate the library build from rslib to tsdown (Rolldown)

Replace the Rspack-based rslib build with tsdown, the Rolldown-based
library bundler from the Vite toolchain family, so bundling, testing
(Vitest/Vite), linting (oxlint), and formatting (oxfmt) all run on the
same OXC/Rolldown stack.

Outcome vs the rslib baseline (size-report):
- build time: ~53s -> ~2s
- JS raw +16.2 kB (+1.1%), JS gzip +2.7 kB (+0.6%) - the residual gap
  is OXC vs SWC minifier tightness, not chunking
- npm tarball -3.0 kB
- CLI --version startup ~3 ms faster; --help within the +/-5 ms
  measurement noise of interleaved A/B runs

Chunk-merging experiments (single shared group, entries-aware groups,
small-module groups) all regressed either total size or --help startup
(a merged shared chunk adds +140 ms), so the default Rolldown split
graph is kept. Custom codeSplitting groups also currently trip a
rolldown-plugin-dts bug that re-emits type-only imports as runtime
imports.

Declarations still bundle per entry via tsgo; dist layout, entry names,
and the internal/ worker/daemon entry resolution contract are unchanged.
@microsoft/api-extractor was only consumed by rslib dts bundling and is
removed together with @rslib/core.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FqeW8sA2ZnvnftdvpCqFMS

* ci: only cache the pnpm store when setup installs dependencies

The layering-guard job uses setup-node-pnpm with install-deps: false, so
it never creates a pnpm store. setup-node's post-job cache save then
fails with a path validation error whenever the lockfile hash misses the
cache - which any lockfile-changing PR does. Gate the cache on
install-deps so no-install jobs skip pnpm store caching entirely.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FqeW8sA2ZnvnftdvpCqFMS

---------

Co-authored-by: Claude <noreply@anthropic.com>

2026-07-04 15:58:05 +02:00

..

action.yml

build: migrate the library build from rslib to tsdown (Rolldown) (#1087)

2026-07-04 15:58:05 +02:00