sideEffects: false

[NullVoxPopuli]

declare all modules as not causing sideEffects that would cause other modules to break -- if it's imported (and most of our stuff is imported right now)

we technically don't have any. guarantees that this is safe without the plugin from:

• Add plugin that declares side-effects #21449

---

Route is not present is the hello-world app

---

Where we started before other refactors landed:

smoke-tests/v2-app-hello-world-template/dist   -35.3%↓

File	Before (Size / Brotli)	After (Size / Brotli)
./assets/main-{hash}.js	234.9 kB / 64.3 kB	-35.3%↓151.9 kB / -34.4%↓42.2 kB
Total (Includes all files)	235.2 kB / 64.5 kB	-35.3%↓152.3 kB / -34.3%↓42.4 kB

setting sideEffects: false with no refactors takes the hello-world app from 64.5 kB to 42.4 kB

PRs that landed that bring this down from the initial 64.5 kB:

• get route out of hello world #21457
  • 64.5 kB -> 48.4 kB
  • after merge -> this PR (sideEffects: false #21456): 42.4 kB (no change)
• Reducing hello-world size #21459
  • 45.4 kB -> 43.8 kB
  • after merge -> this PR (sideEffects: false #21456): 40.6 kB (4.3% smaller!)

Note

Prior spikes with both sideEffects declaration and refactorings brought us down to ~30 kB

[github-actions]

📊 Size report

Tarball size — 1.2 MB → 1.2 MB

dist/dev   No changes

File	Before (Size / Brotli)	After (Size / Brotli)
Total (Includes all files)	2.1 MB / 491.9 kB	2.1 MB / 491.9 kB

---

dist/prod   No changes

File	Before (Size / Brotli)	After (Size / Brotli)
./packages/shared-chunks/api-{hash}.js	24.3 kB / 5.3 kB	-65.7%↓8.3 kB / -66.9%↓1.8 kB
./packages/shared-chunks/cache-{hash}.js	9.9 kB / 2.8 kB	-93%↓697 B / -90.8%↓258 B
Total (Includes all files)	1.9 MB / 450 kB	1.9 MB / 450 kB

---

smoke-tests/v2-app-template/dist   0.09%↑

File	Before (Size / Brotli)	After (Size / Brotli)
./assets/main-{hash}.js	312.4 kB / 83.6 kB	-1.89%↓306.4 kB / -1.66%↓82.2 kB
./assets/modules-{hash}.js	33.9 kB / 10.2 kB	18%↑40.1 kB / 18%↑12 kB
Total (Includes all files)	347.8 kB / 94.5 kB	0.09%↑348.1 kB / 0.4%↑94.9 kB

---

smoke-tests/v2-app-hello-world-template/dist   -8.05%↓

File	Before (Size / Brotli)	After (Size / Brotli)
./assets/main-{hash}.js	158.7 kB / 43.6 kB	-8.07%↓145.9 kB / -7.23%↓40.5 kB
Total (Includes all files)	159.1 kB / 43.8 kB	-8.05%↓146.2 kB / -7.19%↓40.6 kB

_{🤖 This report was automatically generated by wyvox/pkg-size}