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* refactor(highway): lift 79 per-instance closure vars into `hwState` (R3c H lift) Collapses createHighway()'s 79 mutable closure `let`s into one per-instance `hwState` object. Scope-resolved rewrite via acorn + eslint-scope: 1059 edits (1057 references + 79 defs - the deleted `let canvas, ctx, ws`), with the four names shadowed in inner scopes (chartTime/ctx/notes/chordTemplates) resolved correctly so only closure-bound refs move. Enables the later module split: extracted renderer/ws modules close over `hwState` as a factory arg, so multi-panel plugins (highway_3d, note_detect, splitscreen) don't share one highway's state. Container is `hwState`, NOT `H` — `H` is already canvas height (70 uses). The frame-time gate caught that collision instantly (0 draws, `H._drawHooks is not iterable` in the shared draw-hook path). PERF (the whole risk): identical to the pre-lift baseline. Draw p50 2.1-2.2 ms, p95 2.7-3.0 ms (pre-lift 2.7-3.2), measured on the Arcturus feedpak, headless. Each closure-slot read became a `hwState.<slot>` monomorphic property load; the hot loop pays nothing. On-device: Byron confirmed the 2D highway plays smoothly. Tests: the ~30 highway JS suites brace-extract functions/patterns from the source; their state references + the monotonic-clock vm sandbox now use `hwState.<slot>` (the const _CHART_MAX_INTERP_MS etc. stay top-level, not lifted). node --test: 1030/1030 green. Two self-inflicted over-replacements caught and reverted (`_lefty` is a prefix of the 3D-local `_leftyCached`; `STRING_COLORS` a suffix of `DEFAULT_STRING_COLORS`) — substring replaces on the brace-extract regexes need word care. Transformer saved at ~/.local/share/feedback-editor/highway-h-lift.mjs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * test(highway): pin the setNoteStateProvider assertion to hwState._noteStateProvider (CodeRabbit) The [^}]* form matched an unqualified _noteStateProvider =, so a regression to closure-level state could still pass. Require the hwState-qualified assignment. --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
69 lines
3.1 KiB
JavaScript
69 lines
3.1 KiB
JavaScript
// Verify static/highway.js handles the `handshapes` WebSocket message:
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// accumulates incoming chunks, time-sorts on `ready`, and exposes the
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// result on the renderer bundle. The 3D arpeggio frame / chord rails
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// pipeline consumes that bundle; if accumulation or sort drifts, those
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// visuals silently render wrong (out-of-order frames, missing hints).
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//
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// Same source-level guard strategy as the other tests/js/ files —
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// extract the relevant case body and assert the wiring.
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const { test } = require('node:test');
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const assert = require('node:assert/strict');
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const fs = require('node:fs');
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const path = require('node:path');
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const HIGHWAY_JS = path.join(__dirname, '..', '..', 'static', 'highway.js');
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function getCaseBlock(src, label) {
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const start = src.indexOf(`case '${label}'`);
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assert.ok(start !== -1, `case '${label}' not found in highway.js`);
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const tail = src.slice(start);
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const nextCase = tail.search(/\n\s*case\s+['"]/);
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const nextDefault = tail.search(/\n\s*default\s*:/);
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let end = tail.length;
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if (nextCase > 0) end = Math.min(end, nextCase);
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if (nextDefault > 0) end = Math.min(end, nextDefault);
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return tail.slice(0, end);
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}
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test('handshapes WS case accumulates incoming chunks into handShapes', () => {
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// Server streams handshapes in chunks; the case must concat rather
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// than replace so multi-chunk sources don't silently truncate.
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const src = fs.readFileSync(HIGHWAY_JS, 'utf8');
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const block = getCaseBlock(src, 'handshapes');
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assert.match(
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block,
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/hwState\.handShapes\s*=\s*hwState\.handShapes\.concat\(\s*msg\.data\s*\)/,
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'handshapes case must concat msg.data into the handShapes accumulator',
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);
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});
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test('ready case time-sorts handShapes before rendering', () => {
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// Out-of-order chunks would otherwise leave handShapes interleaved,
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// breaking the binary-search lookups the 3D renderer does when
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// probing arpeggio coverage for a chord at time t.
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const src = fs.readFileSync(HIGHWAY_JS, 'utf8');
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const block = getCaseBlock(src, 'ready');
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assert.match(
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block,
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/handShapes\.sort\(\s*\(\s*a\s*,\s*b\s*\)\s*=>\s*a\.start_time\s*-\s*b\.start_time\s*\)/,
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'ready case must sort handShapes by start_time so the renderer can rely on ordering',
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);
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});
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test('bundle exposes handShapes to renderers with flat-list fallback', () => {
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// Renderers (highway_3d in particular) read `bundle.handShapes`; if
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// the bundle key gets renamed or dropped, the 3D arp-frame pipeline
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// goes dark without a runtime error. The current shape is a ternary
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// that picks `_filteredHandShapes` when phrase data carries any and
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// falls back to the flat `handShapes` list otherwise (DLC pattern).
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// Pin both sides of the ternary so accidentally dropping the
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// fallback branch fails the test.
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const src = fs.readFileSync(HIGHWAY_JS, 'utf8');
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assert.match(
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src,
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/\bhandShapes\s*[:=]\s*\([^)]*hwState\._filteredHandShapes[^)]*\)\s*\?\s*hwState\._filteredHandShapes\s*:\s*hwState\.handShapes\b/,
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'bundle must expose handShapes with the _filteredHandShapes-vs-handShapes ternary fallback',
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);
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});
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