Reduce published package install size

[JonathonRP]

Summary

• exclude all generated dist/**/__tests__/** fixtures while retaining the existing named test/spec exclusions
• disable declaration-map emission while preserving declarations and the existing runtime sourceMap setting
• add a patch changeset for motion-start
• keep csstype as a runtime dependency so public declaration imports continue to resolve

Direct package measurements

Measured against published motion-start@0.2.0-next.6 and an actual tarball built from this branch:

Metric	Published next.6	This PR	Reduction
Packed files	1,354	829	525 (38.77%)
Tarball size	344,327 bytes	274,556 bytes	69,771 bytes (20.26%)
Unpacked size	1,396,010 bytes	1,052,820 bytes	343,190 bytes (24.58%)

Tarball inspection confirms 0 __tests__ paths and 0 .d.ts.map files.

Installed dependency closure

npmx calculates install size as the sum of registry dist.unpackedSize for the root and recursively resolved runtime dependencies (excluding peer dependencies). Its published-version comparison is:

Version	Root	Dependencies	Total
0.1.21	1,642,392	464,145	2,106,537 bytes
0.2.0-next.6	1,396,010	1,689,997	3,086,007 bytes
This PR	1,052,820	1,689,997	2,742,817 bytes

This PR reduces the published next.6 total closure by 343,190 bytes (11.12%). Compared with v0.1.21, the candidate root package is 589,572 bytes (35.90%) smaller, but its total closure remains 636,280 bytes (30.21%) larger because dependencies are unchanged.

The exact 979,470-byte (46.50%) next.6 regression shown by npmx is:

Package change from v0.1.21	Byte delta
csstype@3.2.3 added	+1,253,449
runed@0.37.1 added	+242,710
lz-string@1.5.0 added	+175,825
dequal@2.0.3 added	+14,229
esm-env@1.2.2 added	+3,784
motion-start root changed	-246,382
popmotion@11.0.5 removed	-304,115
style-value-types@5.1.2 removed	-58,607
tslib@2.4.0 removed	-49,968
framesync@6.1.2 removed	-42,561
hey-listen@1.0.8 removed	-8,894
Net	+979,470

A clean npm install using --legacy-peer-deps to match npmx's runtime-only closure measured:

Artifact	Files in node_modules	Bytes in node_modules
v0.1.21	948	2,108,973
Published next.6	1,569	3,090,214
This PR tarball	1,044	2,747,008

The small difference from npmx totals is npm-generated .package-lock.json/.bin content.

Why csstype remains

Svelte 5.56.8's stable public svelte/elements surface does not export CSSProperties or StyleProperties; HTML and SVG style attributes are typed only as string | null | undefined. DOM's CSSStyleDeclaration similarly uses broad string values and cannot preserve MotionStyle's property-specific unions, numeric lengths, MotionValue support, or generated public declaration behavior. Replacing csstype with either would weaken consumer types. Moving it to dev, optional, or peer dependencies would not safely solve declaration resolution or npm's default install closure, so this focused packaging PR intentionally retains it.

Validation

• bun run package (includes svelte-package and publint --strict)
• bun run test:run: 143 passed, 1 skipped test file; 642 passed, 1 skipped test
• bun run test:types: 21 files and 21 tests passed; no type errors
• bun run check:package: 0 errors and 0 warnings
• clean npm consumer install from the generated tarball
• clean consumer TypeScript import check for motion-start and motion-start/dom
• package export targets resolve to dist/index.js and dist/dom.js under the Svelte condition
• actual tarball inspection: 829 entries, 0 __tests__ paths, 0 .d.ts.map files

No release version files or bun.lock changes are included.

Summary by CodeRabbit

• Chores
  • Reduced the published package size by excluding test fixtures and unusable declaration maps.
  • Added a patch release entry for these packaging improvements.

[changeset-bot]

🦋 Changeset detected

Latest commit: 54cd42e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
motion-start	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[coderabbitai]

📝 Walkthrough

Walkthrough

The package now excludes compiled test directories and disables declaration map generation. A Changeset records the patch release and the package size cleanup.

Changes

Published package size cleanup

Layer / File(s)	Summary
Configure published output packages/motion-start/package.json, packages/motion-start/tsconfig.json, .changeset/tidy-pandas-smile.md	The package excludes dist/**/__tests__/** directories. TypeScript no longer generates declaration maps. The Changeset records a patch release.

Estimated code review effort: 1 (Trivial) | ~5 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly states the main change: reducing the published package install size.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch jonathonrp-reduce-package-install-size

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[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/motion-start@84

commit: 54cd42e