import assert from 'node:assert/strict'; import crypto from 'node:crypto'; import fs from 'node:fs'; import path from 'node:path'; import test from 'node:test'; import postcss from 'postcss'; import { analyzeSelectorList, createStyleWitnesses, createStyleLedger, readStyleSource, readStyleWitnesses, selectorsWithoutWitness, styleLeafPaths, variableReferences, } from './style-source.js'; const root = path.resolve(import.meta.dirname, '../..'); const stylesRoot = path.join(root, 'src/web/styles'); const indexPath = path.join(stylesRoot, 'index.css'); const index = fs.readFileSync(indexPath, 'utf8'); const expectedImports = [ './tokens.css', './base.css', './features/devices.css', './features/routing.css', './features/instructions.css', './features/connection.css', './features/subscription.css', './features/servers.css', './primitives.css', './features/diagnostics.css', './layout.css', './themes.css', ]; const sha256 = (value) => crypto.createHash('sha256').update(value).digest('hex'); const acceptedLedger = { counts: { cascadeEdges: 823, customProperties: 103, declarations: 3306, important: 0, keyframes: 56, media: 13, rules: 950, variableReferences: 812, }, hashes: { cascadeEdges: '52014b4f05da82ed3e1404ac7e81e2e7dd0960431828eb22fcdcd99ea4009683', customProperties: 'ef70fb1d9b61b177f1939f811babe1116bee631de26f5eac0aa0d0009ca5a1fb', declarations: '568631ecf7ea61652c5fbb5f6d947e8a08fff1a179a72fb2dd6439e0e9cac950', duplicateKeyframes: '4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945', duplicateSelectors: '257eff4727dab9ce25f4e1f9320e89bf2270eb29feae921b96601f103ad7f036', keyframes: 'd4378751f36eccc87923c12540315462055032a5d34978a0f45ecada0a5cc1ce', ruleDeclarationSequences: 'a53ac1a62e6c88fd923971802e9ec5238c8d5d285b6fbecce1d54bbd38d91e2c', selectors: '190b90a75c4dfedc9ea66e37046fbceba70b0adbbdf89872db8f83ce93119114', variableReferences: 'd3a740a583156df0b42ce0f52687617a5b5507b394251070c63d355560921f03', witnesses: 'ae24f63221c956797fcd18706d3f318f15d75ffded0297fdbeb81487e6c7875e', }, }; test('public stylesheet exposes exactly twelve flat semantic owners', () => { const imports = Array.from(index.matchAll(/^@import ['"](\.\/[^'"]+\.css)['"];$/gm), ([, file]) => file); assert.deepEqual(imports, expectedImports); assert.equal(index, `${expectedImports.map((file) => `@import '${file}';`).join('\n')}\n`); assert.equal(new Set(imports).size, imports.length); assert.equal(fs.existsSync(path.join(root, 'src/web/styles.css')), false); const actualCssFiles = fs.readdirSync(stylesRoot, { recursive: true, withFileTypes: true }) .filter((entry) => entry.isFile() && entry.name.endsWith('.css')) .map((entry) => path.relative(stylesRoot, path.join(entry.parentPath, entry.name)).replaceAll('\\', '/')) .sort(); assert.deepEqual(actualCssFiles, ['index.css', ...expectedImports.map((file) => file.slice(2))].sort()); for (const leaf of styleLeafPaths(root)) { const source = fs.readFileSync(leaf, 'utf8'); assert.doesNotMatch(source, /@import|@layer/, path.relative(root, leaf)); } }); test('tokens, shared primitives, and feature styles have one explicit owner', () => { const sources = Object.fromEntries(expectedImports.map((relativePath) => [ relativePath, fs.readFileSync(path.resolve(stylesRoot, relativePath), 'utf8'), ])); const paletteProperties = [ '--client-bg', '--client-panel', '--client-control', '--client-border', '--client-text', '--client-muted', '--harbor-word', '--harbor-connect', '--harbor-gateway', '--client-accent', '--client-accent-soft', ]; for (const property of paletteProperties) { const owners = Object.entries(sources) .filter(([, source]) => new RegExp(`^\\s*${property.replaceAll('-', '\\-')}:`, 'm').test(source)) .map(([owner]) => owner); assert.deepEqual(owners, ['./tokens.css', './themes.css'], property); } for (const [owner, source] of Object.entries(sources)) { assert.doesNotMatch(source, /\[data-theme\]/, owner); } for (const keyframe of [ 'client-row-enter', 'client-row-leave', 'client-delete-strike', 'client-delete-content-dim', 'client-spin', 'client-copy-fade', ]) { const owners = Object.entries(sources) .filter(([, source]) => new RegExp(`@keyframes ${keyframe}\\b`).test(source)) .map(([owner]) => owner); assert.deepEqual(owners, ['./primitives.css'], keyframe); } }); test('client typography uses the shared semantic scale outside the token owner', () => { const tokenRoot = postcss.parse(fs.readFileSync(path.join(stylesRoot, 'tokens.css'), 'utf8')); const tokens = new Map(); tokenRoot.walkDecls((declaration) => tokens.set(declaration.prop, declaration.value)); const roleValues = { micro: ['0.5rem', 'var(--font-weight-body) var(--font-size-micro)/var(--line-height-micro) var(--font-family-client)', '1.45', 'var(--tracking-normal)', 'var(--text-transform-none)'], label: ['0.5625rem', 'var(--font-weight-bold) var(--font-size-label)/var(--line-height-label) var(--font-family-client)', '1.2', 'var(--tracking-label)', 'var(--text-transform-label)'], control: ['0.625rem', 'var(--font-weight-bold) var(--font-size-control)/var(--line-height-control) var(--font-family-client)', '1.2', 'var(--tracking-control)', 'var(--text-transform-none)'], body: ['0.6875rem', 'var(--font-weight-body) var(--font-size-body)/var(--line-height-body) var(--font-family-client)', '1.7', 'var(--tracking-normal)', 'var(--text-transform-none)'], data: ['0.75rem', 'var(--font-weight-strong) var(--font-size-data)/var(--line-height-data) var(--font-family-client)', '1.2', 'var(--tracking-normal)', 'var(--text-transform-none)'], 'item-title': ['0.875rem', 'var(--font-weight-bold) var(--font-size-item-title)/var(--line-height-item-title) var(--font-family-client)', '1.2', 'var(--tracking-title)', 'var(--text-transform-none)'], 'section-title': ['1rem', 'var(--font-weight-bold) var(--font-size-section-title)/var(--line-height-section-title) var(--font-family-client)', '1.25', 'var(--tracking-title)', 'var(--text-transform-none)'], 'state-title': ['1.125rem', 'var(--font-weight-bold) var(--font-size-state-title)/var(--line-height-state-title) var(--font-family-client)', '1.3', 'var(--tracking-tight)', 'var(--text-transform-none)'], 'drawer-title': ['1.375rem', 'var(--font-weight-bold) var(--font-size-drawer-title)/var(--line-height-drawer-title) var(--font-family-client)', '1.15', 'var(--tracking-tight)', 'var(--text-transform-none)'], }; for (const [role, [size, recipe, lineHeight, tracking, transform]] of Object.entries(roleValues)) { assert.equal(tokens.get(`--font-size-${role}`), size, role); assert.equal(tokens.get(`--type-${role}`), recipe, role); assert.equal(tokens.get(`--line-height-${role}`), lineHeight, role); assert.equal(tokens.get(`--type-${role}-tracking`), tracking, role); assert.equal(tokens.get(`--type-${role}-transform`), transform, role); } assert.equal(tokens.get('--type-tooltip'), 'var(--font-weight-strong) var(--font-size-control)/var(--line-height-tooltip) var(--font-family-client)'); assert.equal(tokens.get('--line-height-tooltip'), '1.35'); const allowed = new Map([ ['font', new Set(['inherit', 'var(--type-icon-close)', 'var(--type-tooltip)', ...Object.keys(roleValues).map((role) => `var(--type-${role})`)])], ['font-family', new Set(['var(--font-family-client)'])], ['font-size', new Set([ 'var(--font-size-brand)', 'var(--font-size-brand-tooltip)', 'var(--font-size-brand-tooltip-strong)', 'var(--font-size-icon-chevron)', 'var(--font-size-icon-delete)', ])], ['font-weight', new Set(['var(--font-weight-bold)', 'var(--font-weight-brand)', 'var(--font-weight-strong)'])], ['line-height', new Set(['var(--line-height-micro)'])], ['letter-spacing', new Set([ 'inherit', 'var(--tracking-normal)', 'var(--tracking-title)', ...Object.keys(roleValues).map((role) => `var(--type-${role}-tracking)`), 'var(--type-tooltip-tracking)', ])], ['text-transform', new Set([ ...Object.keys(roleValues).map((role) => `var(--type-${role}-transform)`), 'var(--type-tooltip-transform)', ])], ['font-variant-numeric', new Set(['var(--numeric-tabular)'])], ]); for (const leaf of styleLeafPaths(root).filter((file) => !file.endsWith('/tokens.css'))) { const stylesheet = postcss.parse(fs.readFileSync(leaf, 'utf8'), { from: leaf }); stylesheet.walkDecls((declaration) => { if (allowed.has(declaration.prop)) { assert.ok(allowed.get(declaration.prop).has(declaration.value), `${path.relative(root, leaf)}:${declaration.source.start.line} ${declaration.toString()}`); } }); stylesheet.walkRules((rule) => { const font = rule.nodes.find((node) => node.type === 'decl' && node.prop === 'font'); const role = /^var\(--type-(micro|label|control|tooltip|body|data|item-title|section-title|state-title|drawer-title)\)$/.exec(font?.value || '')?.[1]; if (!role) return; const declarations = new Map(rule.nodes .filter((node) => node.type === 'decl') .map((declaration) => [declaration.prop, declaration.value])); assert.equal(declarations.get('letter-spacing'), `var(--type-${role}-tracking)`, rule.selector); assert.equal(declarations.get('text-transform'), `var(--type-${role}-transform)`, rule.selector); }); } const styles = postcss.parse(readStyleSource(root)); for (const selector of [ '.client-instructions-header h2', '.client-devices-header h2', '.client-local-rules-header h2', '.client-profiles-header h2', ]) { const owner = styles.nodes.find((node) => node.type === 'rule' && node.selector === selector); assert.equal(owner?.nodes.find((node) => node.type === 'decl' && node.prop === 'font')?.value, 'var(--type-drawer-title)', selector); } for (const selector of [ '.client-duration', '.client-power-section.is-gateway .client-duration', '.client-proxy-address', '.client-device-identity-copy span', '.client-device-traffic strong', '.client-device-traffic-point-tooltip', '.client-device-traffic-point-tooltip time', '.client-device-traffic-point-tooltip strong', '.client-gateway-traffic-total > strong', '.client-gateway-traffic-speed', '.client-diagnostics-table code', '.client-server-health', '.harbor-versions', '.harbor-version-code', '.harbor-version-number', ]) { const owners = []; styles.walkRules((rule) => { if (rule.selectors.includes(selector)) owners.push(rule); }); assert.ok(owners.length > 0, selector); assert.ok(owners.some((owner) => owner.nodes.some((node) => node.type === 'decl' && node.prop === 'font-variant-numeric' && node.value === 'var(--numeric-tabular)')), selector); for (const owner of owners.filter((rule) => rule.nodes.some((node) => node.type === 'decl' && node.prop === 'font'))) { assert.equal(owner.nodes.find((node) => node.type === 'decl' && node.prop === 'font-variant-numeric')?.value, 'var(--numeric-tabular)', selector); } } }); test('accepted stylesheet has pinned declaration, selector, keyframe, variable, and cascade ledgers', () => { const witnesses = readStyleWitnesses(root); assert.equal(witnesses.length, 808); assert.equal(witnesses.filter((witness) => witness.unknown || witness.ancestorUnknown).length, 0); const ledger = createStyleLedger(readStyleSource(root), { witnesses }); assert.deepEqual(ledger.counts, acceptedLedger.counts); assert.deepEqual(ledger.hashes, acceptedLedger.hashes); }); test('every live production selector has an expanded DOM witness', () => { const unmatched = selectorsWithoutWitness(readStyleSource(root), readStyleWitnesses(root)); assert.deepEqual(unmatched, [ '.client-diagnostics-section-title button', '.client-diagnostics-section-title button:disabled', '.client-diagnostics-section-title button:focus-visible', ]); }); test('JSX witness expansion follows cross-file components, render props, ReactNode slots, portals, and imperative classes', () => { const fixtureWitnesses = createStyleWitnesses([ { file: '/fixture/Child.tsx', source: 'export function Child({ slot }) { return
{slot}

; }', }, { file: '/fixture/App.tsx', source: 'export function App() { return
} />
; }', }, ]); const title = fixtureWitnesses.find((witness) => witness.classes.includes('title')); const slot = fixtureWitnesses.find((witness) => witness.classes.includes('slot')); assert.deepEqual(title?.ancestorClasses, ['child', 'scope']); assert.deepEqual(slot?.ancestorClasses, ['child', 'scope']); const renderPropWitnesses = createStyleWitnesses([ { file: '/fixture/List.tsx', source: 'export function List({ renderItem }) { return
{renderItem()}
; }', }, { file: '/fixture/App.tsx', source: 'export function App() { return
; }', }, ]); assert.deepEqual( renderPropWitnesses.find((witness) => witness.classes.includes('item'))?.ancestorClasses, ['list', 'scope'], ); const localBindingWitnesses = createStyleWitnesses([{ file: '/fixture/App.tsx', source: `export function App() { const content =

; return
{content}
; }`, }]); assert.deepEqual( localBindingWitnesses.find((witness) => witness.classes.includes('local-title'))?.ancestorClasses, ['local-scope', 'local-wrapper'], ); assert.throws(() => createStyleWitnesses([{ file: '/fixture/App.tsx', source: 'export function App() { return ; }', }]), /Unresolved JSX witness component/); assert.throws(() => createStyleWitnesses([{ file: '/fixture/App.tsx', source: 'export function App() { const props = {}; return ; } function Child() { return
; }', }]), /Unsupported spread props/); const witnesses = readStyleWitnesses(root); const app = witnesses.find((witness) => witness.classes.includes('app') && witness.classes.includes('client-app')); assert.ok(app); const appThemeEdge = createStyleLedger( '.app.client-app { --client-bg: white; } ' + '@media (prefers-color-scheme: dark) { .app.client-app { --client-bg: black; } }', { witnesses }, ); assert.equal(appThemeEdge.counts.cascadeEdges, 1); const marker = witnesses.find((witness) => witness.classes.includes('client-diagnostics-active-marker')); assert.ok(marker?.classes.includes('is-visible')); assert.ok(marker?.classes.includes('is-moving')); const confirmations = witnesses.filter((witness) => witness.classes.includes('client-confirmation-popup')); assert.ok(confirmations.some((witness) => witness.ancestorClasses.length === 0)); assert.ok(confirmations.some((witness) => witness.ancestorClasses.includes('app'))); const trafficTooltips = witnesses.filter((witness) => witness.classes.includes('client-device-traffic-point-tooltip')); assert.ok(trafficTooltips.every((witness) => witness.ancestorClasses.length === 0)); }); test('JSX witnesses keep real multi-class collisions and exclude impossible element collisions', () => { const witnesses = readStyleWitnesses(root); const collision = createStyleLedger( '.client-copy-button { color: red; } .client-instruction-copy-button { color: blue; }', { witnesses }, ); assert.equal(collision.counts.cascadeEdges, 1); const impossible = createStyleLedger( '.client-copy-button { color: red; } .client-power { color: blue; }', { witnesses }, ); assert.equal(impossible.counts.cascadeEdges, 0); const conservativeSibling = createStyleLedger( '.client-subscription-drawer .client-servers { margin-inline: auto; } ' + '.client-server-group + .client-server-group { margin-top: 8px; }', { witnesses }, ); assert.equal(conservativeSibling.counts.cascadeEdges, 1); }); test('selector proof uses the observed level-four grammar and exact specificity', () => { const fixtures = [ ['#root', [{ a: 1, b: 0, c: 0 }]], ['.client-shell:has(.harbor-brand.is-gateway-active)', [{ a: 0, b: 3, c: 0 }]], ['.client-instructions-toggle:not(.client-devices-toggle):not(.client-diagnostics-toggle)', [{ a: 0, b: 3, c: 0 }]], [".client-power[aria-checked='true']::before", [{ a: 0, b: 2, c: 1 }]], ['.client-instruction-block:nth-child(n)', [{ a: 0, b: 2, c: 0 }]], ['.client-confirmation-actions button:hover:not(:disabled), #root', [ { a: 0, b: 3, c: 1 }, { a: 1, b: 0, c: 0 }, ]], ]; for (const [selector, expected] of fixtures) { assert.deepEqual(analyzeSelectorList(selector).map((entry) => entry.specificity), expected, selector); } assert.throws(() => analyzeSelectorList('.broken:has('), /Unsupported CSS selector grammar/); assert.throws(() => analyzeSelectorList('& .proof'), /Unsupported CSS selector node nesting/); assert.throws(() => analyzeSelectorList('.proof:is(.active)'), /Unsupported CSS pseudo :is/); }); test('variable proof preserves nested and fallback references and fails closed', () => { assert.deepEqual(variableReferences('var(--outer, color-mix(in srgb, var(--inner, red), white))'), [ { name: '--outer', fallback: 'color-mix(in srgb, var(--inner, red), white)' }, { name: '--inner', fallback: 'red' }, ]); assert.throws(() => variableReferences('var(color, red)'), /Invalid var\(\) name/); assert.throws(() => variableReferences('var(--unfinished'), /Unterminated var\(\) reference/); }); test('ledger mutations expose loss, order changes, duplicate selectors, keyframes, variables, and cascade orientation', () => { const declaration = createStyleLedger('.proof { color: red; background: black; }'); const removed = createStyleLedger('.proof { color: red; }'); const reordered = createStyleLedger('.proof { background: black; color: red; }'); assert.notEqual(removed.hashes.declarations, declaration.hashes.declarations); assert.equal(reordered.hashes.declarations, declaration.hashes.declarations); assert.notEqual(reordered.hashes.ruleDeclarationSequences, declaration.hashes.ruleDeclarationSequences); const duplicate = createStyleLedger('.proof { color: red; } .other { color: green; } .proof { color: blue; }'); const duplicateReordered = createStyleLedger('.proof { color: blue; } .other { color: green; } .proof { color: red; }'); assert.equal(duplicateReordered.hashes.declarations, duplicate.hashes.declarations); assert.notEqual(duplicateReordered.hashes.duplicateSelectors, duplicate.hashes.duplicateSelectors); const keyframe = createStyleLedger('@keyframes pulse { from { opacity: 0; } to { opacity: 1; } }'); const changedKeyframe = createStyleLedger('@keyframes pulse { from { opacity: 0.1; } to { opacity: 1; } }'); assert.notEqual(changedKeyframe.hashes.keyframes, keyframe.hashes.keyframes); const variable = createStyleLedger('.proof { color: var(--outer, var(--inner, red)); }'); const changedVariable = createStyleLedger('.proof { color: var(--outer, var(--fallback, red)); }'); assert.notEqual(changedVariable.hashes.variableReferences, variable.hashes.variableReferences); const edge = createStyleLedger('.alpha { color: red; } .beta { color: blue; }'); const reversedEdge = createStyleLedger('.beta { color: blue; } .alpha { color: red; }'); assert.equal(edge.counts.cascadeEdges, 1); assert.equal(reversedEdge.counts.cascadeEdges, 1); assert.notEqual(reversedEdge.hashes.cascadeEdges, edge.hashes.cascadeEdges); const independent = createStyleLedger('.alpha { color: red; } .beta { background: blue; }'); const independentReordered = createStyleLedger('.beta { background: blue; } .alpha { color: red; }'); assert.equal(independent.counts.cascadeEdges, 0); assert.deepEqual(independentReordered.hashes, independent.hashes); for (const shorthand of [ '.x { place-items: center; } .y { align-items: start; }', '.x { place-content: center; } .y { justify-content: start; }', '.x { grid-area: 1 / 1; } .y { grid-row: 2; }', ]) { assert.equal(createStyleLedger(shorthand).counts.cascadeEdges, 1, shorthand); } assert.equal(createStyleLedger('.a.c.d { color: red; } .x:not(.a.b) { color: blue; }').counts.cascadeEdges, 1); assert.throws(() => createStyleLedger('.proof { unknown-proof-property: 1; }'), /Unsupported CSS property/); assert.throws(() => createStyleLedger('@supports (display: grid) { .proof { display: grid; } }'), /Unsupported CSS at-rule/); assert.throws(() => createStyleLedger('@media screen { .proof { color: red; } }'), /Unsupported media grammar/); }); test('cascade proof dependencies are exact direct dev dependencies', () => { const packageJson = JSON.parse(fs.readFileSync(path.join(root, 'package.json'), 'utf8')); assert.equal(packageJson.devDependencies['@babel/parser'], '7.29.3'); assert.equal(packageJson.devDependencies.postcss, '8.5.14'); assert.equal(packageJson.devDependencies['postcss-selector-parser'], '7.1.4'); assert.equal(packageJson.devDependencies['@csstools/selector-specificity'], '6.0.0'); }); test('main owns one public stylesheet and the regrouped production CSS is deterministic', () => { const main = fs.readFileSync(path.join(root, 'src/web/main.tsx'), 'utf8'); assert.equal((main.match(/import ['"]\.\/styles\/index\.css['"]/g) || []).length, 1); assert.equal((main.match(/import ['"][^'"]+\.css['"]/g) || []).length, 1); const assets = fs.readdirSync(path.join(root, 'dist/assets')).filter((file) => file.endsWith('.css')); assert.deepEqual(assets, ['index-B8MBAMBM.css']); const built = fs.readFileSync(path.join(root, 'dist/assets', assets[0])); assert.equal(built.byteLength, 127884); assert.equal(sha256(built), 'ec9b242f2a01e75970ec6dee43a037764835c9032a1ea6cfa97df3c7735f76ba'); });