---
title: Package build metrics
description: Compile times and bundle sizes for each package using tsdown
  v0.20.3 (rolldown v1.0.0-rc.3). Compile time = tsdown "Build complete"
  duration; bundle size = total file size in dist/ excluding source maps.
group: guides
---
> ⚠️ **Warning:** **Alpha**
> DSAR is currently in alpha. APIs, package surfaces, configuration, and documentation may change as the project evolves.

Compile times and bundle sizes for each package using tsdown v0.20.3 (rolldown v1.0.0-rc.3). Compile time = tsdown "Build complete" duration; bundle size = total file size in `dist/` excluding source maps.

|Package|Compile|Bundle|
|--|--|--|
|@dsar/backend|2.25 s|246.4 KB|
|@dsar/cli|2.73 s|38.7 KB|
|@dsar/core|1.51 s|11.6 KB|
|@dsar/guards|1.21 s|3.6 KB|
|@dsar/inbound-resend|1.53 s|21.6 KB|
|@dsar/internals-error-codes|—|— (src)|
|@dsar/node-sdk|1.21 s|44.3 KB|
|@dsar/outbound-resend|1.37 s|14.7 KB|
|@dsar/persistence|1.35 s|55.4 KB|
|@dsar/persistence-pg|1.22 s|2.4 KB|
|@dsar/persistence-sqlite|1.34 s|3.0 KB|
|@dsar/policy-engine|2.30 s|26.1 KB|
|@dsar/policy-packs|2.34 s|57.4 KB|
|@dsar/schema|1.39 s|37.0 KB|
|@dsar/storage-filesystem|1.44 s|19.8 KB|
|@dsar/storage-s3|1.64 s|26.9 KB|
|@dsar/storage-vercel-blob|1.41 s|19.3 KB|
|dsar|1.78 s|1.0 KB|

**Totals:** 16 bundled packages, 628.2 KB combined bundle (excl. source maps, excl. `dsar` proxy re-exports; `@dsar/internals-error-codes` omitted because it is source-only).

*Generated on 2026-02-26. Individual package builds (sequential, no turbo concurrency) for consistent timing. Bundler: tsdown v0.20.3 / rolldown v1.0.0-rc.3. Bundle sizes use actual file sizes (÷ 1024 for KB) excluding `.map` files.*

## Delta from previous measurement (2026-02-25)

Compared against the tsdown column from the prior snapshot.

|Package|Bundle (prev)|Bundle (now)|Δ|
|--|--|--|--|
|@dsar/backend|226.5 KB|246.4 KB|+8.8%|
|@dsar/persistence|54.1 KB|55.4 KB|+2.4%|
|@dsar/node-sdk|44.1 KB|44.3 KB|+0.5%|
|All other packages|—|—|±0.0%|

Only packages with measurable bundle-size changes are listed. The `dsar` proxy package is new (re-exports all subpackages).