[nulltask]

The Help's Open source list walked dependencies from app-play and player-browser. It had gaps both ways:

• Missing: everything the workspace packages bring in (lit-html, lit-element, @lit/reactive-element via player-ui; fengari-web via skin-beatoraja; alien-signals) and the stylesheet's frameworks (tailwindcss, basecoat-css).
• No license text: @ffmpeg/core (GPL-2.0-or-later, served as ffmpeg-core.wasm), @ffmpeg/ffmpeg, @ffmpeg/util, @pixi/colord, signalsmith-stretch and tweakpane publish no LICENSE file to npm.
• Extra: type-only packages (@types/*, @webgpu/types, @ffmpeg/types) and packages tree-shaken away (@xmldom/xmldom, gifuct-js, js-binary-schema-parser).

Change

• scripts/acknowledgements.ts: at generateBundle, the list is the npm packages of every module a chunk rendered (renderedLength > 0), worker builds included (worker.plugins), plus packages on the page that are not modules: tailwindcss, basecoat-css (CSS @import) and @ffmpeg/core (served files). It is written as acknowledgements.json; virtual:acknowledgements now exports a loader, and the Help fetches the list when the tab opens instead of carrying it in the main bundle.
• licenses/: upstream license texts for the packages that ship none, with a README (EN + JA). @ffmpeg/core's notes that FFmpeg is built with --enable-gpl and its libraries, and points to the corresponding source (ffmpeg.wasm v0.12.10, FFmpeg).
• The dev server has no bundle, so it walks the runtime dependencies through the workspace packages, skipping type-only ones. It is close, not exact (it cannot see tree-shaking).

Result

A production build lists 21 packages, all with license text. Against the package paths in the build's source maps: nothing bundled is missing, and the only entries not in a source map are the three added on purpose (@ffmpeg/core, basecoat-css, tailwindcss).

Testing

• Unit: scripts/acknowledgements.test.ts (package of a module, rendered-only counting, override file names, type-only detection, ordering, text clamping, reading a package with its own LICENSE or a stand-in).
• Built with source maps and compared as above; the dev server's list and the Help tab checked in the browser.
• pnpm run check (0 errors), app-play unit tests (737) pass.

This touches the Open source intro and help-modal.ts, as does #794; whichever lands second resolves the overlap.

🤖 Generated with Claude Code

[github-actions]

Exports Benchmark

🟢 2 improvements, no regression · 15 within noise · 850 compared

_{2fe0747a → b2dd67ba · 3 runs base / 3 runs head · a regression or improvement is a change past ±8% whose runs do not overlap · times are per call (median)}

Improvements (2)

API	Base	Head	Change	Run spread (base / head)
player-browser.buildAudioBus	2.92 µs	1.81 µs	38.0% faster	±13.8% / ±15.4%
player-browser.createDecideScene	260 µs	237 µs	8.7% faster	±3.5% / ±2.1%

Within noise (15): past the threshold, but the runs overlap

API	Base	Head	Change	Run spread (base / head)
player-engine.course.normalizeCourseTrophies	35.6 ns	29.4 ns	17.5% faster	±18.0% / ±22.0%
chart-model.createBeatResolver	11.1 ns	13.4 ns	20.8% slower	±14.0% / ±12.4%
skin-beatoraja.scene.beatorajaKeysongOp	11.6 ns	14.1 ns	20.8% slower	±5.4% / ±15.7%
player-browser.setMasterVolume	409 µs	493 µs	20.5% slower	±8.1% / ±19.4%
player-terminal.beginWin32InputModeOptIn	27.5 ns	24.0 ns	12.8% faster	±31.1% / ±34.7%
player-browser.releaseBeatorajaSceneKitAssets	110 ns	128 ns	16.9% slower	±4.7% / ±8.5%
player-ui.defineBeMusicElements	538 ns	615 ns	14.2% slower	±5.0% / ±6.9%
player-terminal.beginStatefulKeyboardProtocolOptIn	38.6 ns	43.7 ns	13.3% slower	±26.0% / ±36.6%
player-engine.course.resolveNonstopTempo	1.18 µs	1.07 µs	10.0% faster	±9.5% / ±10.9%
player-browser.loadBeatorajaTexturesFromBundle	304 ns	338 ns	11.2% slower	±8.4% / ±12.1%
player-browser.createResultScene	58.7 µs	53.5 µs	8.8% faster	±8.5% / ±13.2%
skin-beatoraja.normalizeBeatorajaFonts	29.6 ns	27.0 ns	8.7% faster	±8.0% / ±14.4%

…and 3 more.

I/O-bound, not judged (19)

These cases touch the filesystem, so their time follows the OS cache and the disk more than the code.

API	Base	Head	Change	Run spread (base / head)
chart-audio-renderer.renderChartFile	5.87 ms	6.12 ms	4.2% slower	±1.5% / ±3.9%
chart-audio-renderer.renderJSON	3.90 ms	3.86 ms	0.9% faster	±2.3% / ±0.7%
chart-audio-renderer.renderSingleSample	4.97 µs	5.12 µs	3.0% slower	±0.7% / ±1.7%
chart-audio-renderer.writeAudioFile	195 µs	220 µs	12.5% slower	±25.1% / ±27.5%
chart-editor.exportChart	188 µs	198 µs	5.5% slower	±7.6% / ±5.8%
chart-editor.importChart	136 µs	132 µs	3.5% faster	±11.0% / ±1.4%
chart-editor.loadJSONFile	139 µs	139 µs	0.2% faster	±1.0% / ±0.9%
chart-editor.saveJSONFile	226 µs	202 µs	10.9% faster	±16.6% / ±17.8%
chart-parser.parseChartFile	124 µs	116 µs	6.6% faster	±4.2% / ±8.8%
player-browser.readFilesIntoBytesMap	4.54 µs	4.50 µs	0.9% faster	±1.8% / ±3.0%
player-terminal.createBgaANSIRenderer	2.57 µs	2.60 µs	1.2% slower	±4.3% / ±11.9%
player-terminal.loadStageFileANSIImage	101 ns	100 ns	1.1% faster	±2.1% / ±0.2%
player-terminal.loadStageFileANSILines	170 ns	157 ns	7.7% faster	±2.9% / ±1.8%
player-terminal.loadTerminalANSIImage	1.02 ms	1.04 ms	1.9% slower	±2.2% / ±1.9%
shared-utils.createFileLogger	191 µs	191 µs	±0.0%	±3.2% / ±2.2%
shared-utils.readFilesIntoEntryMap	2.27 µs	1.98 µs	12.8% faster	±0.5% / ±1.9%
shared-utils.resolveFirstExistingPath	86.7 µs	87.6 µs	1.0% slower	±1.8% / ±2.2%
shared-utils.workerize.workerize	10.5 ms	10.3 ms	1.9% faster	±1.7% / ±2.2%
skin-beatoraja.readFilesIntoBytesMap	19.4 µs	19.7 µs	1.3% slower	±2.4% / ±1.8%

Excluded: too fast to time (68)

A timed sample lasted 1 µs or less on at least one side (usually a base commit from before calls were batched), so its time is timer noise and no change is shown.

API	Base	Head
chart-model.createMeasureBoundariesBeats	72.0 ns	76.0 ns
chart-model.parseBmsARGB	264 ns	264 ns
chart-model.resolveChartMainBPM	101 ns	101 ns
chart-source.parseBmsonSubartist	59.4 ns	61.0 ns
player-browser.applyBeatorajaStretchRect	27.6 ns	27.3 ns
player-browser.checkBrowserCompat	156 ns	156 ns
player-browser.CourseMaker	85.7 ns	104 ns
player-browser.destinationToSpriteProps	85.6 ns	85.6 ns
player-browser.GameplayRecorder	73.6 ns	76.8 ns
player-browser.resolveCourseEntry	70.0 ns	69.8 ns
player-browser.SceneController	248 ns	252 ns
player-browser.setBrowserWorkerCount	38.5 ns	38.0 ns

…and 56 more.

Run details

Measure	Value
Median change (all compared cases)	+0.11%
Mean change	+0.29%
Overall verdict (median vs. threshold)	unchanged
Compared / within noise / I/O-bound / unchanged	850 / 15 / 19 / 814
Benchmarked / skipped (head)	918 / 35
Time / warmup per case	50 ms / 25 ms
Node / platform	v26.12.1 / linux