mirror of
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Paul BakausandClaude Fable 5
b6304913ef
Tab-strip MEMBERSHIP no longer exempts chromatic top/bottom stripes — only a real selection marker does: aria-selected="true", aria-current (any non-false value), or an active/current/selected class hint. A stripe repeated on every tab in the group ([role=tab], .tabs items, aria-selected="false" tabs) is decoration and flags as side-tab; the selected tab's own underline — including the reserved-space transparent-border pattern — stays legal. Applied consistently across the element border path (isTabContextElement), the pseudo-element stripe scan, and the inset box-shadow stripe scan. Also replaces a stray NUL byte in the marquee scanner's dedupe key that made tools treat checks.mjs as binary. Browser bundle regenerated. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
3722 lines
159 KiB
JavaScript
3722 lines
159 KiB
JavaScript
import {
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BORDER_SAFE_TAGS,
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GENERIC_FONTS,
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KNOWN_SERIF_FONTS,
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OVERUSED_FONTS,
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SAFE_TAGS,
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WCAG_LARGE_BOLD_TEXT_PX,
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WCAG_LARGE_TEXT_PX,
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isBrandFontOnOwnDomain,
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} from '../shared/constants.mjs';
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import {
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colorToHex,
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contrastRatio,
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getHue,
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hasChroma,
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isNeutralColor,
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parseGradientColors,
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parseRgb,
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relativeLuminance,
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} from '../shared/color.mjs';
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import { extractGoogleFontFamilies } from '../shared/fonts.mjs';
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const DETECTOR_IS_BROWSER = typeof window !== 'undefined';
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// ─── Section 3: Pure Detection ──────────────────────────────────────────────
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function checkBorders(tag, widths, colors, radius, opts = {}) {
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// Badge-shaped <span>s (own visible background) are a real stripe target
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// for the top/bottom variant — the inline-tag exemption exists to quiet
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// text-level borders, not chips. They skip the left/right arms below.
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const spanBadge = tag === 'span' && !!opts.badgeLike;
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if (BORDER_SAFE_TAGS.has(tag) && !spanBadge) return [];
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const findings = [];
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const sides = ['Top', 'Right', 'Bottom', 'Left'];
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for (const side of sides) {
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const w = widths[side];
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if (w < 1 || isNeutralColor(colors[side])) continue;
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const otherSides = sides.filter(s => s !== side);
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const maxOther = Math.max(...otherSides.map(s => widths[s]));
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if (!(w >= 2 && (maxOther <= 1 || w >= maxOther * 2))) continue;
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const sn = side.toLowerCase();
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const isSide = side === 'Left' || side === 'Right';
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if (isSide) {
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if (spanBadge) continue;
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if (radius > 0) findings.push({ id: 'side-tab', snippet: `border-${sn}: ${w}px + border-radius: ${radius}px` });
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else if (w >= 3) findings.push({ id: 'side-tab', snippet: `border-${sn}: ${w}px` });
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} else {
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if (radius > 0 && w >= 2) findings.push({ id: 'border-accent-on-rounded', snippet: `border-${sn}: ${w}px + border-radius: ${radius}px` });
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// Horizontal variant of the side-tab stripe: a thick chromatic accent
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// riding the top or bottom edge of a card/badge/container. Same
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// dominant-edge + chroma gates as left/right, 3-12px band. Selected-
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// tab underlines are exempt via opts.tabContext (adapters look for
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// tablist/nav/tab ancestors and aria-selected); links, buttons,
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// table cells, and <hr> never reach here (BORDER_SAFE_TAGS).
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else if (!opts.tabContext && w >= 3 && w <= 12) {
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findings.push({ id: 'side-tab', snippet: `border-${sn}: ${w}px` });
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}
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}
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}
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return findings;
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}
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// Returns true if the given text is composed entirely of emoji characters
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// (plus whitespace / variation selectors). Emojis render as multicolor glyphs
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// regardless of CSS `color`, so contrast checks against the element's text
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// color are meaningless for these nodes.
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const EMOJI_CHAR_RE = /[\u{1F1E6}-\u{1F1FF}\u{1F300}-\u{1F9FF}\u{1FA00}-\u{1FAFF}\u{2600}-\u{27BF}\u{2300}-\u{23FF}\u{FE0F}\u{200D}\u{1F3FB}-\u{1F3FF}]/u;
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const EMOJI_CHARS_GLOBAL = /[\u{1F1E6}-\u{1F1FF}\u{1F300}-\u{1F9FF}\u{1FA00}-\u{1FAFF}\u{2600}-\u{27BF}\u{2300}-\u{23FF}\u{FE0F}\u{200D}\u{1F3FB}-\u{1F3FF}]/gu;
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function isEmojiOnlyText(text) {
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if (!text) return false;
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if (!EMOJI_CHAR_RE.test(text)) return false;
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return text.replace(EMOJI_CHARS_GLOBAL, '').trim() === '';
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}
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function checkColors(opts) {
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const { tag, textColor, bgColor, effectiveBg, effectiveBgStops, fontSize, fontWeight, hasDirectText, isEmojiOnly, bgClip, bgImage, classList } = opts;
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if (SAFE_TAGS.has(tag)) {
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// Exception for <a> and <button> elements styled as buttons. SAFE_TAGS
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// exists to suppress contrast noise on inline links and unstyled controls,
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// where the element has no own background and the contrast against the
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// ancestor surface is already the intended visual. When the element has
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// its own opaque background and direct text, it is a styled button — and
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// contrast on its own surface is a real, frequent bug worth flagging.
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const isStyledButton = (tag === 'a' || tag === 'button')
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&& hasDirectText
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&& bgColor && bgColor.a > 0.5;
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if (!isStyledButton) return [];
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}
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const findings = [];
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if (hasDirectText && textColor && !isEmojiOnly) {
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// Run background-dependent checks against either a solid bg or, if the
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// ancestor is a gradient, against every gradient stop (use the worst case).
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const bgs = effectiveBg ? [effectiveBg] : (effectiveBgStops && effectiveBgStops.length ? effectiveBgStops : null);
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if (bgs) {
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// Gray on colored background — flag if every stop is chromatic
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const textLum = relativeLuminance(textColor);
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const isGray = !hasChroma(textColor, 20) && textLum > 0.05 && textLum < 0.85;
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if (isGray && bgs.every(b => hasChroma(b, 40))) {
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const bgLabel = effectiveBg ? colorToHex(effectiveBg) : `gradient(${bgs.map(colorToHex).join(', ')})`;
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findings.push({ id: 'gray-on-color', snippet: `text ${colorToHex(textColor)} on bg ${bgLabel}` });
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}
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// Low contrast (WCAG AA) — worst case across all bg stops
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const ratios = bgs.map(b => contrastRatio(textColor, b));
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let worstIdx = 0;
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for (let i = 1; i < ratios.length; i++) if (ratios[i] < ratios[worstIdx]) worstIdx = i;
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const ratio = ratios[worstIdx];
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const isLargeText = fontSize >= WCAG_LARGE_TEXT_PX || (fontSize >= WCAG_LARGE_BOLD_TEXT_PX && fontWeight >= 700);
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const threshold = isLargeText ? 3.0 : 4.5;
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if (ratio < threshold) {
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// Skip the false-positive class where text has alpha < 1 AND we
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// couldn't find an opaque ancestor (effectiveBg is null, we're
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// comparing against gradient-stop fallback). In jsdom mode the
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// detector can't resolve `var(--X)` color tokens, so a dark
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// section sitting between the text and the body's decorative
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// gradient is invisible to us — we end up measuring contrast
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// against the body's paper-grain noise instead of the real
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// local bg. Real low-contrast bugs use alpha=1 and have a
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// resolvable opaque ancestor; semi-transparent Tailwind tokens
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// like `text-paper/60` on `bg-ink` sections are the FP pattern.
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const isAlphaFallbackFP = !DETECTOR_IS_BROWSER && !effectiveBg && (textColor.a != null && textColor.a < 1);
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if (!isAlphaFallbackFP) {
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findings.push({ id: 'low-contrast', snippet: `${ratio.toFixed(1)}:1 (need ${threshold}:1) — text ${colorToHex(textColor)} on ${colorToHex(bgs[worstIdx])}` });
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}
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}
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}
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// AI palette: purple/violet on headings
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if (hasChroma(textColor, 50)) {
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const hue = getHue(textColor);
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if (hue >= 260 && hue <= 310 && (['h1', 'h2', 'h3'].includes(tag) || fontSize >= 20)) {
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findings.push({ id: 'ai-color-palette', snippet: `Purple/violet text (${colorToHex(textColor)}) on heading` });
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}
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}
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}
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// Gradient text
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if (bgClip === 'text' && bgImage && bgImage.includes('gradient')) {
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findings.push({ id: 'gradient-text', snippet: 'background-clip: text + gradient' });
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}
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// Tailwind class checks
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if (classList) {
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const classStr = typeof classList === 'string' ? classList : Array.from(classList).join(' ');
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const grayMatch = classStr.match(/\btext-(?:gray|slate|zinc|neutral|stone)-\d+\b/);
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const colorBgMatch = classStr.match(/\bbg-(?:red|orange|amber|yellow|lime|green|emerald|teal|cyan|sky|blue|indigo|violet|purple|fuchsia|pink|rose)-\d+\b/);
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if (grayMatch && colorBgMatch) {
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findings.push({ id: 'gray-on-color', snippet: `${grayMatch[0]} on ${colorBgMatch[0]}` });
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}
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if (/\bbg-clip-text\b/.test(classStr) && /\bbg-gradient-to-/.test(classStr)) {
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findings.push({ id: 'gradient-text', snippet: 'bg-clip-text + bg-gradient (Tailwind)' });
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}
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const purpleText = classStr.match(/\btext-(?:purple|violet|indigo)-\d+\b/);
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if (purpleText && (['h1', 'h2', 'h3'].includes(tag) || /\btext-(?:[2-9]xl)\b/.test(classStr))) {
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findings.push({ id: 'ai-color-palette', snippet: `${purpleText[0]} on heading` });
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}
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if (/\bfrom-(?:purple|violet|indigo)-\d+\b/.test(classStr) && /\bto-(?:purple|violet|indigo|blue|cyan|pink|fuchsia)-\d+\b/.test(classStr)) {
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findings.push({ id: 'ai-color-palette', snippet: 'Purple/violet gradient (Tailwind)' });
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}
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}
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return findings;
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}
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// WCAG contrast for the :hover state of an element whose hover rules change
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// its text color and/or background. The classic miss: a nav CTA whose
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// author-intended hover pair passes AA, but a broader selector (e.g.
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// `.nav-links a:hover`) wins the specificity fight and swaps in a color
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// that fails. Only fires on elements that present as styled controls —
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// direct text plus an opaque-ish own background in either state — so plain
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// inline links keep the same suppression they get in checkColors.
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function checkHoverContrast(opts) {
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const { tag, textColor, bg, ownBgAlpha, fontSize, fontWeight, hasDirectText, isEmojiOnly } = opts;
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if (!hasDirectText || isEmojiOnly || !textColor || !bg) return [];
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if (SAFE_TAGS.has(tag) && !(ownBgAlpha != null && ownBgAlpha > 0.5)) return [];
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const ratio = contrastRatio(textColor, bg);
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const isLargeText = fontSize >= WCAG_LARGE_TEXT_PX || (fontSize >= WCAG_LARGE_BOLD_TEXT_PX && fontWeight >= 700);
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const threshold = isLargeText ? 3.0 : 4.5;
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if (ratio >= threshold) return [];
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return [{
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id: 'low-contrast',
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snippet: `:hover state ${ratio.toFixed(1)}:1 (need ${threshold}:1) — text ${colorToHex(textColor)} on ${colorToHex(bg)}`,
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}];
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}
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function isCardLikeFromProps(hasShadow, hasBorder, hasRadius, hasBg) {
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if (!hasShadow && !hasBorder) return false;
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return hasRadius || hasBg;
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}
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const HEADING_TAGS = new Set(['h1', 'h2', 'h3', 'h4', 'h5', 'h6']);
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// Pure check: given a heading and metrics about its previousElementSibling,
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// decide if the sibling is the canonical "icon-tile-stacked-above-heading" shape.
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//
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// Triggers when ALL of the following hold for the sibling:
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// • size 32–128px on both axes (not too small, not a hero image)
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// • aspect ratio 0.7–1.4 (squarish — excludes wide thumbnails / pill badges)
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// • has a non-transparent background-color, background-image, OR a visible border
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// (covers solid colors, white-with-border, gradients — anything that visually
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// defines a tile)
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// • border-radius < width/2 (excludes round avatars; rounded squares pass)
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// • contains an <svg> or icon-class <i> element that's smaller than the tile
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// • the tile sits above the heading (its bottom is above the heading's top)
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function checkIconTile(opts) {
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const { headingTag, headingText, headingTop,
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siblingTag, siblingWidth, siblingHeight, siblingBottom,
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siblingBgColor, siblingBgImage, siblingBorderWidth, siblingBorderRadius,
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hasIconChild, iconChildWidth } = opts;
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if (!HEADING_TAGS.has(headingTag)) return [];
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if (!siblingTag) return [];
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// Don't recurse into nested headings (e.g. h2 above h3 in a section header)
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if (HEADING_TAGS.has(siblingTag)) return [];
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// Size window: 32–128px on each axis
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if (!(siblingWidth >= 32 && siblingWidth <= 128)) return [];
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if (!(siblingHeight >= 32 && siblingHeight <= 128)) return [];
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// Squarish aspect ratio
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const ratio = siblingWidth / siblingHeight;
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if (ratio < 0.7 || ratio > 1.4) return [];
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// Must have something that visually defines the tile
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const bgVisible = (siblingBgColor && siblingBgColor.a > 0.1)
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|| (siblingBgImage && siblingBgImage !== 'none' && siblingBgImage !== '');
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const borderVisible = siblingBorderWidth > 0;
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if (!bgVisible && !borderVisible) return [];
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// Exclude circles (avatars). Rounded squares pass.
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if (siblingBorderRadius >= siblingWidth / 2) return [];
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// Must contain an icon element smaller than the tile
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if (!hasIconChild) return [];
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if (iconChildWidth && iconChildWidth >= siblingWidth * 0.95) return [];
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// Vertical stacking: tile must end above where the heading starts.
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// (Allow the check to skip when both top/bottom are 0 — jsdom layout case.)
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if (headingTop && siblingBottom && siblingBottom > headingTop + 4) return [];
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const text = (headingText || '').trim().slice(0, 60);
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return [{
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id: 'icon-tile-stack',
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snippet: `${Math.round(siblingWidth)}x${Math.round(siblingHeight)}px icon tile above ${headingTag} "${text}"`,
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}];
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}
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// Resolve the primary (non-generic) face from a font-family string and return
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// whether the resolved primary is serif. Two paths:
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// 1. Primary face is in KNOWN_SERIF_FONTS → serif.
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// 2. Primary face is unknown but the stack ends in the generic `serif`
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// token → treat as serif. Authors who declare `font-family: 'X', serif`
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// almost always have a serif primary; a sans declared with a serif
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// fallback is a code smell, not the common case.
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// Returns { primary, isSerif } so the snippet can name the face.
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function resolveSerif(fontFamily) {
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if (!fontFamily) return { primary: null, isSerif: false };
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const tokens = fontFamily.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase());
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const primary = tokens.find(f => f && !GENERIC_FONTS.has(f)) || null;
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if (!primary) return { primary: null, isSerif: false };
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if (KNOWN_SERIF_FONTS.has(primary)) return { primary, isSerif: true };
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if (tokens.includes('serif')) return { primary, isSerif: true };
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return { primary, isSerif: false };
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}
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function checkItalicSerif(opts) {
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const { tag, fontStyle, fontFamily, fontSize, headingText } = opts;
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if (fontStyle !== 'italic') return [];
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// Anchor the rule on hero-scale text. h1 is the canonical hero element;
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// h2 ≥ 48px catches the cases where the design demotes the visual hero
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// to an h2 but keeps the size.
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if (tag !== 'h1' && !(tag === 'h2' && fontSize >= 48)) return [];
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if (fontSize < 48) return [];
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const { primary, isSerif } = resolveSerif(fontFamily);
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if (!isSerif) return [];
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const text = (headingText || '').trim().slice(0, 60);
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return [{
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id: 'italic-serif-display',
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snippet: `italic serif ${tag} (${primary || 'serif'}) at ${Math.round(fontSize)}px "${text}"`,
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}];
|
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}
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|
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// Color saturation check. Returns true when the color has visible
|
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// chroma — i.e., it's an "accent color" rather than near-neutral.
|
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// Handles rgb()/rgba(), #hex, oklch(), and hsl(). var() refs are
|
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// expected to be pre-resolved by the caller.
|
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function isAccentColor(cssColor) {
|
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if (!cssColor) return false;
|
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const s = String(cssColor).trim();
|
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// rgb / rgba — direct channel-distance check.
|
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const rgbM = /rgba?\(\s*(\d+)\s*,?\s+|\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(s.replace(/rgba?\(\s*/, 'rgb(').replace(/,/g, ', '));
|
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const rgbStrict = /rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(s);
|
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if (rgbStrict) {
|
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const r = +rgbStrict[1], g = +rgbStrict[2], b = +rgbStrict[3];
|
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return (Math.max(r, g, b) - Math.min(r, g, b)) >= 40;
|
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}
|
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// #hex — 3, 4, 6, or 8 digit.
|
||
const hexM = /^#([0-9a-f]{3,8})\b/i.exec(s);
|
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if (hexM) {
|
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let h = hexM[1];
|
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if (h.length === 3 || h.length === 4) h = h.split('').map((c) => c + c).join('').slice(0, 6);
|
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else h = h.slice(0, 6);
|
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if (h.length === 6) {
|
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const r = parseInt(h.slice(0, 2), 16);
|
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const g = parseInt(h.slice(2, 4), 16);
|
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const b = parseInt(h.slice(4, 6), 16);
|
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return (Math.max(r, g, b) - Math.min(r, g, b)) >= 40;
|
||
}
|
||
}
|
||
// oklch(L C H) — chroma C is what matters. Typical neutral grays
|
||
// have C < 0.02; visible accents are 0.05+. CSS minification can
|
||
// collapse spaces between L% and C ("oklch(43%.15 34)"), so we
|
||
// extract all numbers and take the second rather than matching a
|
||
// strict L-then-whitespace-then-C pattern.
|
||
if (/^oklch\(/i.test(s)) {
|
||
const nums = s.match(/\d*\.\d+|\d+/g);
|
||
if (nums && nums.length >= 2) {
|
||
const c = parseFloat(nums[1]);
|
||
return !Number.isNaN(c) && c >= 0.05;
|
||
}
|
||
}
|
||
// hsl(H, S%, L%) — saturation > 20% reads as accent.
|
||
const hslM = /hsla?\(\s*[\d.]+\s*,\s*([\d.]+)%/i.exec(s);
|
||
if (hslM) {
|
||
const sat = parseFloat(hslM[1]);
|
||
return !Number.isNaN(sat) && sat >= 20;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// Sibling-relationship rule. Anchor on a hero-scale h1, look at the
|
||
// previousElementSibling, and gate on EITHER the classic tracked-
|
||
// uppercase eyebrow OR the modern accent-colored bold eyebrow.
|
||
function checkHeroEyebrow(opts) {
|
||
const {
|
||
headingTag, headingText, headingFontSize,
|
||
siblingTag, siblingText, siblingTextTransform,
|
||
siblingFontSize, siblingLetterSpacing,
|
||
siblingFontWeight, siblingColor,
|
||
siblingHasAccentDashPseudo,
|
||
} = opts;
|
||
if (headingTag !== 'h1') return [];
|
||
// We previously gated on headingFontSize >= 48 to anchor "hero scale".
|
||
// But modern hero h1s use clamp() / vw / var(--text-*), none of which
|
||
// jsdom can resolve — the computed value comes back as "2em" or
|
||
// "var(--text-9xl)" and parseFloat returns 2 or NaN. The gate fails
|
||
// on virtually every Tailwind v4 / framework build. The other gates
|
||
// (sibling text 2-60 chars, font-size ≤ 14px, accent-bold OR
|
||
// tracked-caps) are tight enough to avoid false positives on non-
|
||
// hero h1s — a tiny tan label directly above any h1 is the
|
||
// antipattern regardless of how big the h1 ends up.
|
||
if (!siblingTag) return [];
|
||
// An h2 above an h1 is a different anti-pattern (heading hierarchy / dual
|
||
// headings) — never an eyebrow.
|
||
if (HEADING_TAGS.has(siblingTag)) return [];
|
||
|
||
const text = (siblingText || '').trim();
|
||
if (text.length < 2 || text.length > 60) return [];
|
||
if (!(siblingFontSize > 0 && siblingFontSize <= 14)) return [];
|
||
|
||
// Branch A: classic tracked-uppercase eyebrow.
|
||
const isUppercased = siblingTextTransform === 'uppercase'
|
||
|| (/[A-Z]/.test(text) && !/[a-z]/.test(text));
|
||
const isClassicTracked = isUppercased && siblingLetterSpacing >= 1.6;
|
||
|
||
// Branch B: modern accent-bold eyebrow — sentence case, low
|
||
// tracking, but bold + accent-colored. The style choices changed;
|
||
// the pattern is the same kicker-above-headline anti-pattern.
|
||
const weight = Number(siblingFontWeight) || 400;
|
||
const isAccentBold = weight >= 700 && isAccentColor(siblingColor || '');
|
||
|
||
// Branch C: dash-prefix eyebrow — sentence case, low tracking, regular
|
||
// weight, but announced by a short chromatic ::before/::after bar
|
||
// (the kicker dash). Same label-above-headline pattern, third styling.
|
||
const isDashPrefixed = !!siblingHasAccentDashPseudo;
|
||
|
||
if (!isClassicTracked && !isAccentBold && !isDashPrefixed) return [];
|
||
|
||
const headingTextSnippet = (headingText || '').trim().slice(0, 60);
|
||
const eyebrowSnippet = text.slice(0, 40);
|
||
const style = isClassicTracked ? 'tracked-caps' : isAccentBold ? 'accent-bold' : 'dash-prefix';
|
||
return [{
|
||
id: 'hero-eyebrow-chip',
|
||
snippet: `eyebrow chip (${style}) "${eyebrowSnippet}" above ${headingTag} "${headingTextSnippet}"`,
|
||
}];
|
||
}
|
||
|
||
function checkRepeatedSectionKickers(opts) {
|
||
const { candidates, minCount = 3 } = opts;
|
||
if (!Array.isArray(candidates) || candidates.length < minCount) return [];
|
||
return candidates.map(candidate => ({
|
||
id: 'repeated-section-kickers',
|
||
snippet: `repeated section kicker "${candidate.kickerText}" before ${candidate.headingTag} "${candidate.headingText}" (${candidates.length} on page)`,
|
||
}));
|
||
}
|
||
|
||
const LAYOUT_TRANSITION_PROPS = new Set([
|
||
'width', 'height', 'padding', 'margin',
|
||
'max-height', 'max-width', 'min-height', 'min-width',
|
||
'padding-top', 'padding-right', 'padding-bottom', 'padding-left',
|
||
'margin-top', 'margin-right', 'margin-bottom', 'margin-left',
|
||
]);
|
||
|
||
function checkMotion(opts) {
|
||
const { tag, transitionProperty, animationName, timingFunctions, classList } = opts;
|
||
if (SAFE_TAGS.has(tag)) return [];
|
||
const findings = [];
|
||
|
||
// --- Bounce/elastic easing ---
|
||
if (animationName && animationName !== 'none' && /bounce|elastic|wobble|jiggle|spring/i.test(animationName)) {
|
||
findings.push({ id: 'bounce-easing', snippet: `animation: ${animationName}` });
|
||
}
|
||
if (classList && /\banimate-bounce\b/.test(classList)) {
|
||
findings.push({ id: 'bounce-easing', snippet: 'animate-bounce (Tailwind)' });
|
||
}
|
||
|
||
// Check timing functions for overshoot cubic-bezier (y values outside [0, 1])
|
||
if (timingFunctions) {
|
||
const bezierRe = /cubic-bezier\(\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*\)/g;
|
||
let m;
|
||
while ((m = bezierRe.exec(timingFunctions)) !== null) {
|
||
const y1 = parseFloat(m[2]), y2 = parseFloat(m[4]);
|
||
if (y1 < -0.1 || y1 > 1.1 || y2 < -0.1 || y2 > 1.1) {
|
||
findings.push({ id: 'bounce-easing', snippet: `cubic-bezier(${m[1]}, ${m[2]}, ${m[3]}, ${m[4]})` });
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
// --- Layout property transition ---
|
||
if (transitionProperty && transitionProperty !== 'all' && transitionProperty !== 'none') {
|
||
const props = transitionProperty.split(',').map(p => p.trim().toLowerCase());
|
||
const layoutFound = props.filter(p => LAYOUT_TRANSITION_PROPS.has(p));
|
||
if (layoutFound.length > 0) {
|
||
findings.push({ id: 'layout-transition', snippet: `transition: ${layoutFound.join(', ')}` });
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
// Locate the color token in a single shadow layer. Returns
|
||
// { color, start, end } where color is the parsed {r,g,b,a} (null when the
|
||
// token exists but can't be parsed — e.g. an unresolved var() or an exotic
|
||
// color space), or null when no color token is present at all. Handles both
|
||
// serialization orders: computed style puts the color first
|
||
// ("rgb(…) 0px 0px 20px"), authored CSS usually puts it last
|
||
// ("0 0 20px #3b82f6").
|
||
function findShadowColor(layer) {
|
||
const fn = layer.match(/(?:rgba?|hsla?|hwb|oklch|oklab|lch|lab|color)\([^)]*\)/i);
|
||
if (fn) return { color: parseAnyColor(fn[0]), start: fn.index, end: fn.index + fn[0].length };
|
||
const hex = layer.match(/#[0-9a-fA-F]{3,8}\b/);
|
||
if (hex) return { color: parseAnyColor(hex[0]), start: hex.index, end: hex.index + hex[0].length };
|
||
const wordRe = /[a-zA-Z][a-zA-Z]*/g;
|
||
let m;
|
||
while ((m = wordRe.exec(layer)) !== null) {
|
||
const named = CSS_NAMED_COLORS[m[0].toLowerCase()];
|
||
if (named) return { color: { ...named, a: 1 }, start: m.index, end: m.index + m[0].length };
|
||
}
|
||
return null;
|
||
}
|
||
|
||
// Extract the length values of a shadow layer in declaration order, with the
|
||
// color token removed so its components aren't misread as lengths. Handles
|
||
// computed-style px values AND authored unitless zeros ("0 0 20px"); rem/em
|
||
// approximate at 16px. Result order is offset-x, offset-y, blur, [spread].
|
||
function extractShadowLengths(layer, colorStart, colorEnd) {
|
||
const stripped = colorStart != null
|
||
? layer.slice(0, colorStart) + ' ' + layer.slice(colorEnd)
|
||
: layer;
|
||
const vals = [];
|
||
const re = /(-?\d*\.?\d+)(px|rem|em)?/g;
|
||
let m;
|
||
while ((m = re.exec(stripped)) !== null) {
|
||
let v = parseFloat(m[1]);
|
||
if (m[2] === 'rem' || m[2] === 'em') v *= 16;
|
||
vals.push(v);
|
||
}
|
||
return vals;
|
||
}
|
||
|
||
function checkGlow(opts) {
|
||
const { boxShadow, textShadow, effectiveBg } = opts;
|
||
const onDarkBg = effectiveBg ? relativeLuminance(effectiveBg) < 0.1 : false;
|
||
|
||
// Scan one shadow list. Two glow tells, in any color format:
|
||
// 1. Zero-offset chromatic halo (0 0 Npx <color>) — slop on ANY
|
||
// background; the light radiates evenly outward, which is never how
|
||
// real elevation shadows behave. Achromatic zero-offset shadows stay
|
||
// legal (soft ambient elevation), as do focus rings (blur 0).
|
||
// 2. Any chromatic shadow with real blur on a dark background — the
|
||
// classic dark-mode glow accent.
|
||
const scan = (value, prop) => {
|
||
if (!value || value === 'none') return null;
|
||
// Split multiple shadows (commas not inside parentheses)
|
||
for (const layer of value.split(/,(?![^(]*\))/)) {
|
||
const colorInfo = findShadowColor(layer);
|
||
// No color token, or one we can't resolve (unresolved var(), exotic
|
||
// color space): don't guess — skip rather than false-positive.
|
||
if (!colorInfo || !colorInfo.color) continue;
|
||
const color = colorInfo.color;
|
||
if (!hasChroma(color, 30)) continue;
|
||
const vals = extractShadowLengths(layer, colorInfo.start, colorInfo.end);
|
||
// Third value is blur (offset-x, offset-y, blur, [spread])
|
||
if (vals.length < 3 || vals[2] <= 4) continue;
|
||
if (vals[0] === 0 && vals[1] === 0) {
|
||
return { id: 'dark-glow', snippet: `Zero-offset ${prop} glow (${colorToHex(color)})` };
|
||
}
|
||
if (onDarkBg) {
|
||
return { id: 'dark-glow', snippet: `Colored ${prop} glow (${colorToHex(color)}) on dark background` };
|
||
}
|
||
}
|
||
return null;
|
||
};
|
||
|
||
const found = scan(boxShadow, 'box-shadow') || scan(textShadow, 'text-shadow');
|
||
return found ? [found] : [];
|
||
}
|
||
|
||
// Collect CSS custom property declarations from raw stylesheet/HTML text.
|
||
// First declaration wins (:root declarations usually come first); good
|
||
// enough for the single-level var() resolution the text engines need.
|
||
function collectCssCustomProps(content) {
|
||
const map = new Map();
|
||
const re = /(--[\w-]+)\s*:\s*([^;{}]+)/g;
|
||
let m;
|
||
while ((m = re.exec(content)) !== null) {
|
||
if (!map.has(m[1])) map.set(m[1], m[2].trim());
|
||
}
|
||
return map;
|
||
}
|
||
|
||
// Text-level glow scan shared by the regex engine and the page-level HTML
|
||
// pattern pass. Resolves single-level var() refs against custom properties
|
||
// collected from the same text, then applies the same two glow tells as
|
||
// checkGlow: zero-offset chromatic halo (any background) and chromatic
|
||
// blurred shadow when the page has a dark background. Returns
|
||
// [{ index, snippet }] — index is the offset of the shadow declaration.
|
||
// Dark-page heuristic for raw CSS/HTML text: dark hex/rgb literals, Tailwind
|
||
// dark bg utilities, or a ROOT-scoped (body/html/:root or <body style>)
|
||
// background that resolves — via var() — to a dark color. The var/modern-
|
||
// color extension is deliberately root-scoped: a light page with one dark
|
||
// accent chip must not turn every tinted drop shadow into a "dark page"
|
||
// signal. Shared by the glow and radial-halo text scanners.
|
||
function cssTextHasDarkRootBg(content, customProps) {
|
||
const darkBgRe = /background(?:-color)?\s*:\s*(?:#(?:0[0-9a-f]|1[0-9a-f]|2[0-3])[0-9a-f]{4}\b|#(?:0|1)[0-9a-f]{2}\b|rgb\(\s*(\d{1,2})\s*,\s*(\d{1,2})\s*,\s*(\d{1,2})\s*\))/i;
|
||
const twDarkBg = /\bbg-(?:gray|slate|zinc|neutral|stone)-(?:9\d{2}|800)\b/;
|
||
if (darkBgRe.test(content) || twDarkBg.test(content)) return true;
|
||
const rootScopes = [];
|
||
const blockRe = /(?:^|[}\s,;>])(?:body|html|:root)\s*(?:,[^{]*)?\{([^}]*)\}/gi;
|
||
let sm;
|
||
while ((sm = blockRe.exec(content)) !== null) rootScopes.push(sm[1]);
|
||
const inlineBody = content.match(/<body[^>]*\bstyle\s*=\s*"([^"]*)"/i);
|
||
if (inlineBody) rootScopes.push(inlineBody[1]);
|
||
for (const scope of rootScopes) {
|
||
const bgRe = /background(?:-color)?\s*:\s*([^;{}]+)/gi;
|
||
let bm;
|
||
while ((bm = bgRe.exec(scope)) !== null) {
|
||
const c = parseAnyColor(resolveVarRefs(bm[1].trim(), customProps));
|
||
if (c && (c.a ?? 1) > 0.5 && relativeLuminance(c) < 0.1) return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function scanCssTextForGlow(content) {
|
||
const customProps = collectCssCustomProps(content);
|
||
const hasDarkBg = cssTextHasDarkRootBg(content, customProps);
|
||
|
||
const results = [];
|
||
const shadowRe = /\b(box-shadow|text-shadow)\s*:\s*([^;{}]+)/gi;
|
||
let m;
|
||
while ((m = shadowRe.exec(content)) !== null) {
|
||
const prop = m[1].toLowerCase();
|
||
const value = resolveVarRefs(m[2].trim(), customProps);
|
||
for (const layer of value.split(/,(?![^(]*\))/)) {
|
||
const colorInfo = findShadowColor(layer);
|
||
if (!colorInfo || !colorInfo.color || !hasChroma(colorInfo.color, 30)) continue;
|
||
const vals = extractShadowLengths(layer, colorInfo.start, colorInfo.end);
|
||
if (vals.length < 3 || vals[2] <= 4) continue;
|
||
const zeroOffset = vals[0] === 0 && vals[1] === 0;
|
||
if (!zeroOffset && !hasDarkBg) continue;
|
||
results.push({
|
||
index: m.index,
|
||
snippet: zeroOffset
|
||
? `Zero-offset ${prop} glow (${colorToHex(colorInfo.color)})`
|
||
: `Colored ${prop} glow (${colorToHex(colorInfo.color)}) on dark page`,
|
||
});
|
||
break; // one finding per declaration
|
||
}
|
||
}
|
||
return results;
|
||
}
|
||
|
||
// Decorative chromatic halo drawn as a radial-gradient background on a dark
|
||
// page: a saturated center stop dissolving to transparent. The gradient
|
||
// sibling of the dark-glow shadow tell. Mechanical gates, in order:
|
||
// * page has a dark root background (shared heuristic with the glow scan)
|
||
// * declaration has no url() layer (photographic imagery is exempt)
|
||
// * the gradient's first color stop is chromatic (RGB spread >= 24) and
|
||
// visible (alpha >= 0.7 — deliberately translucent light-scene washes
|
||
// composite with content instead of painting a flat halo, and stay legal)
|
||
// * the gradient's last stop is transparent / near-zero alpha
|
||
// * no small pixel-sized stop positions (<= 24px = dot/texture patterns)
|
||
// * not a repeating-* gradient
|
||
// Achromatic vignettes fail the chroma gate; panel sheens that fade to an
|
||
// opaque surface color fail the transparent-end gate.
|
||
function scanCssTextForRadialHalo(content) {
|
||
const customProps = collectCssCustomProps(content);
|
||
if (!cssTextHasDarkRootBg(content, customProps)) return [];
|
||
|
||
const findings = [];
|
||
const seen = new Set();
|
||
const declRe = /background(?:-image)?\s*:\s*([^;{}]+)/gi;
|
||
let m;
|
||
while ((m = declRe.exec(content)) !== null) {
|
||
const value = resolveVarRefs(m[1].trim(), customProps);
|
||
if (/url\s*\(/i.test(value)) continue;
|
||
|
||
const gradRe = /(repeating-)?radial-gradient\(/gi;
|
||
let g;
|
||
while ((g = gradRe.exec(value)) !== null) {
|
||
if (g[1]) continue; // repeating-* = pattern, not halo
|
||
// Balanced-paren capture of the gradient arguments.
|
||
let depth = 0, end = -1;
|
||
const open = value.indexOf('(', g.index);
|
||
for (let i = open; i < value.length; i++) {
|
||
if (value[i] === '(') depth++;
|
||
else if (value[i] === ')') { depth--; if (depth === 0) { end = i; break; } }
|
||
}
|
||
if (end < 0) break;
|
||
const args = splitTopLevelCommas(value.slice(open + 1, end));
|
||
if (args.length < 2) continue;
|
||
|
||
// Optional prelude (shape / size / `at <pos>`) carries no color.
|
||
const colorTokenRe = /(?:rgba?|hsla?|oklch|oklab|lab|lch|hwb|color-mix)\([^)]*(?:\([^)]*\))?[^)]*\)|#[0-9a-f]{3,8}\b|\btransparent\b/i;
|
||
const stops = args.filter(a => colorTokenRe.test(a));
|
||
if (stops.length < 2) continue;
|
||
|
||
// Dot/texture exemption: px-sized stop positions mean a repeating
|
||
// background-size pattern, not a page-scale halo.
|
||
const pxStop = stops.some(s => {
|
||
const pm = s.match(/(-?[\d.]+)px\b/);
|
||
return pm && Math.abs(parseFloat(pm[1])) <= 24;
|
||
});
|
||
if (pxStop) continue;
|
||
|
||
const first = stops[0].match(colorTokenRe);
|
||
const last = stops[stops.length - 1].match(colorTokenRe);
|
||
if (!first || !last) continue;
|
||
|
||
const lastColor = /^transparent$/i.test(last[0]) ? { r: 0, g: 0, b: 0, a: 0 } : parseAnyColor(last[0]);
|
||
if (!lastColor || (lastColor.a ?? 1) > 0.05) continue;
|
||
|
||
const firstColor = /^transparent$/i.test(first[0]) ? null : parseAnyColor(first[0]);
|
||
if (!firstColor) continue;
|
||
if ((firstColor.a ?? 1) < 0.7) continue;
|
||
const spread = Math.max(firstColor.r, firstColor.g, firstColor.b) - Math.min(firstColor.r, firstColor.g, firstColor.b);
|
||
if (spread < 24) continue;
|
||
|
||
const snippet = `radial-gradient halo (${colorToHex(firstColor)} → transparent) on dark page`;
|
||
if (seen.has(snippet)) continue;
|
||
seen.add(snippet);
|
||
findings.push({ index: m.index, snippet });
|
||
}
|
||
}
|
||
return findings;
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// Text-level CSS rule-block scanners (pseudo-element stripes, pulsing dots)
|
||
// ---------------------------------------------------------------------------
|
||
|
||
// Iterate `selector { declarations }` pairs in raw CSS/HTML text. The block
|
||
// body excludes braces, so nested structures (@media, @keyframes) naturally
|
||
// yield their innermost rules with the innermost selector text. Callers
|
||
// create the regex locally — a shared /g instance is not re-entrant.
|
||
const CSS_RULE_BLOCK_SOURCE = String.raw`([^{};]+)\{([^{}]*)\}`;
|
||
|
||
// Parse a declaration block into a prop → value map (last declaration wins,
|
||
// approximating the cascade inside one block). Values keep their raw text
|
||
// with any !important suffix stripped.
|
||
function parseCssDeclBlock(block) {
|
||
const decls = new Map();
|
||
for (const part of String(block || '').split(';')) {
|
||
const idx = part.indexOf(':');
|
||
if (idx <= 0) continue;
|
||
const prop = part.slice(0, idx).trim().toLowerCase();
|
||
const value = part.slice(idx + 1).replace(/\s*!important\s*$/i, '').trim();
|
||
if (prop && value) decls.set(prop, value);
|
||
}
|
||
return decls;
|
||
}
|
||
|
||
function cssLengthToPx(value) {
|
||
const m = String(value || '').trim().match(/^(-?[\d.]+)(px|rem|em)$/i);
|
||
if (!m) return null;
|
||
const n = parseFloat(m[1]);
|
||
return m[2].toLowerCase() === 'px' ? n : n * 16;
|
||
}
|
||
|
||
function isZeroOffset(value) {
|
||
return value != null && /^-?0(?:px|%|rem|em)?$/.test(String(value).trim());
|
||
}
|
||
|
||
// Side-tab variant: the accent stripe drawn as an absolutely-positioned
|
||
// ::before/::after pseudo-element (narrow colored box hugging a vertical
|
||
// edge) instead of a border-left/right. The element-level border checks
|
||
// never see it — pseudo-elements aren't part of the DOM the cascade walks —
|
||
// so this scans stylesheet text directly, mirroring the border rule's
|
||
// gates: >= 3px thick, chromatic fill, full height against a side edge.
|
||
function scanCssTextForPseudoStripe(content) {
|
||
const customProps = collectCssCustomProps(content);
|
||
const findings = [];
|
||
const seen = new Set();
|
||
const ruleRe = new RegExp(CSS_RULE_BLOCK_SOURCE, 'g');
|
||
let m;
|
||
while ((m = ruleRe.exec(content)) !== null) {
|
||
const selector = m[1].trim();
|
||
if (!/::?(?:before|after)\b/i.test(selector)) continue;
|
||
// Keep the border rule's prose exemptions (blockquote bars etc.).
|
||
if (/\b(?:blockquote|pre|code|nav|hr)\b/i.test(selector)) continue;
|
||
const decls = parseCssDeclBlock(m[2]);
|
||
const position = decls.get('position');
|
||
if (position !== 'absolute' && position !== 'fixed') continue;
|
||
|
||
const widthPx = cssLengthToPx(resolveVarRefs(
|
||
decls.get('width') || decls.get('inline-size') || '', customProps));
|
||
const heightPx = cssLengthToPx(resolveVarRefs(
|
||
decls.get('height') || decls.get('block-size') || '', customProps));
|
||
const verticalCandidate = widthPx != null && widthPx >= 3 && widthPx <= 12;
|
||
// Horizontal variant (top/bottom stripe) carries extra exemptions:
|
||
// link/button underline affordances, selected-state indicators
|
||
// (aria-selected="true", aria-current, active/current/selected class
|
||
// hints), and state-conditional (:hover/:focus/...) affordances are
|
||
// not stripes. Tab-strip membership alone ([role=tab], .tabs, bare
|
||
// [aria-selected]) is NOT exempt — a stripe on every tab in the
|
||
// group is decoration; only the selected item's underline stays.
|
||
const horizontalCandidate = heightPx != null && heightPx >= 3 && heightPx <= 12
|
||
&& !/(?:^|[\s>+~,(])(?:a|button|summary|tr|td|th|table|li)(?![\w-])/i.test(selector)
|
||
&& !/\[aria-selected\s*[*^$|~]?=\s*["']?true/i.test(selector)
|
||
&& !/\[aria-current(?!\s*[*^$|~]?=\s*["']?false)/i.test(selector)
|
||
&& !/(?:^|[\s._[-])(?:active|current|selected|btn[\w-]*|button[\w-]*|link[\w-]*)(?![\w])/i.test(selector)
|
||
&& !/:(?:hover|focus|focus-visible|focus-within|active|checked)\b/i.test(selector);
|
||
if (!verticalCandidate && !horizontalCandidate) continue;
|
||
|
||
// Resolve edge offsets, letting an `inset` shorthand fill the gaps.
|
||
const offsets = {
|
||
top: decls.get('top'), right: decls.get('right'),
|
||
bottom: decls.get('bottom'), left: decls.get('left'),
|
||
};
|
||
const inset = decls.get('inset');
|
||
if (inset) {
|
||
const p = inset.split(/\s+/);
|
||
const [t, r, b, l] =
|
||
p.length === 1 ? [p[0], p[0], p[0], p[0]]
|
||
: p.length === 2 ? [p[0], p[1], p[0], p[1]]
|
||
: p.length === 3 ? [p[0], p[1], p[2], p[1]]
|
||
: p;
|
||
if (offsets.top == null) offsets.top = t;
|
||
if (offsets.right == null) offsets.right = r;
|
||
if (offsets.bottom == null) offsets.bottom = b;
|
||
if (offsets.left == null) offsets.left = l;
|
||
}
|
||
if (offsets.left == null) offsets.left = decls.get('inset-inline-start');
|
||
if (offsets.right == null) offsets.right = decls.get('inset-inline-end');
|
||
|
||
const heightValue = String(resolveVarRefs(
|
||
decls.get('height') || decls.get('block-size') || '', customProps)).trim();
|
||
const widthValue = String(resolveVarRefs(
|
||
decls.get('width') || decls.get('inline-size') || '', customProps)).trim();
|
||
|
||
let edge = null;
|
||
let thicknessPx = null;
|
||
if (verticalCandidate) {
|
||
const fullHeight = (isZeroOffset(offsets.top) && isZeroOffset(offsets.bottom))
|
||
|| /^100(?:\.0*)?%$/.test(heightValue);
|
||
if (fullHeight) {
|
||
edge = isZeroOffset(offsets.left) ? 'left'
|
||
: isZeroOffset(offsets.right) ? 'right' : null;
|
||
thicknessPx = widthPx;
|
||
}
|
||
}
|
||
if (!edge && horizontalCandidate) {
|
||
const fullWidth = (isZeroOffset(offsets.left) && isZeroOffset(offsets.right))
|
||
|| /^100(?:\.0*)?%$/.test(widthValue);
|
||
if (fullWidth) {
|
||
edge = isZeroOffset(offsets.top) ? 'top'
|
||
: isZeroOffset(offsets.bottom) ? 'bottom' : null;
|
||
thicknessPx = heightPx;
|
||
}
|
||
}
|
||
if (!edge) continue;
|
||
|
||
// Chromatic fill only — a neutral hairline divider is not an accent
|
||
// stripe. Unresolvable colors err toward detection, matching the
|
||
// border rule's unknown-format default.
|
||
const bg = String(resolveVarRefs(
|
||
decls.get('background-color') || decls.get('background') || '', customProps)).trim();
|
||
if (!bg || /^(?:none|transparent|inherit|initial|unset|currentcolor)$/i.test(bg)) continue;
|
||
const colorToken = bg.match(/(?:rgba?|hsla?|oklch|oklab|lab|lch|hwb)\([^)]*\)|#[0-9a-f]{3,8}\b/i);
|
||
const parsed = parseAnyColor(colorToken ? colorToken[0] : bg);
|
||
if (parsed) {
|
||
if ((parsed.a ?? 1) < 0.1) continue;
|
||
const spread = Math.max(parsed.r, parsed.g, parsed.b) - Math.min(parsed.r, parsed.g, parsed.b);
|
||
if (spread < 30) continue;
|
||
} else if (/^(?:white|black|gray|grey|silver)$/i.test(bg)) {
|
||
continue;
|
||
}
|
||
|
||
if (seen.has(selector)) continue;
|
||
seen.add(selector);
|
||
findings.push({
|
||
id: 'side-tab',
|
||
snippet: `${selector} — absolute ${thicknessPx}px pseudo-element stripe (${edge}: 0)`,
|
||
});
|
||
}
|
||
return findings;
|
||
}
|
||
|
||
// Side-tab stripe drawn as a single-edge inset box-shadow
|
||
// (x or y offset 3-12px, other axis 0, no blur/spread, chromatic color):
|
||
// paints a bar along one edge with no border property involved, so the
|
||
// element-level border checks never see it. Selection-state indicators
|
||
// are exempt — an inset stripe on [aria-current] / .active / [role=tab]
|
||
// marks the selected item; the same stripe unconditionally on every item
|
||
// is decoration and flags.
|
||
function scanCssTextForInsetStripe(content) {
|
||
const customProps = collectCssCustomProps(content);
|
||
const findings = [];
|
||
const seen = new Set();
|
||
const ruleRe = new RegExp(CSS_RULE_BLOCK_SOURCE, 'g');
|
||
let m;
|
||
while ((m = ruleRe.exec(content)) !== null) {
|
||
const selector = m[1].trim();
|
||
// Selection-state contexts: current-item markers and interaction
|
||
// states. Tab-strip membership alone ([role=tab], .tabs, bare
|
||
// [aria-selected]) is NOT exempt — a stripe on every tab in the
|
||
// group is decoration; only the selected item's indicator stays.
|
||
if (/:(?:hover|focus|focus-visible|focus-within|active|checked|target)\b/i.test(selector)) continue;
|
||
if (/\[aria-selected\s*[*^$|~]?=\s*["']?true/i.test(selector)) continue;
|
||
if (/\[aria-current(?!\s*[*^$|~]?=\s*["']?false)/i.test(selector)) continue;
|
||
if (/(?:^|[\s._[-])(?:active|current|selected)(?![\w])/i.test(selector)) continue;
|
||
// Structural tags where a single-edge inset shadow is depth/quoting,
|
||
// not an accent stripe.
|
||
if (/(?:^|[\s>+~,(])(?:button|hr|tr|td|th|table|blockquote|pre|code)(?![\w-])/i.test(selector)) continue;
|
||
|
||
const decls = parseCssDeclBlock(m[2]);
|
||
const shadow = decls.get('box-shadow');
|
||
if (!shadow || !/\binset\b/i.test(shadow)) continue;
|
||
// Narrow fixed-width elements (logo marks, icon glyphs) use inset
|
||
// fills as artwork, not edge stripes. Stripe targets — cards, badges,
|
||
// menu items — are wider or leave width to layout.
|
||
const declaredWidth = cssLengthToPx(resolveVarRefs(decls.get('width') || decls.get('inline-size') || '', customProps));
|
||
if (declaredWidth != null && declaredWidth <= 40) continue;
|
||
const value = resolveVarRefs(shadow, customProps);
|
||
for (const layer of value.split(/,(?![^(]*\))/)) {
|
||
if (!/\binset\b/i.test(layer)) continue;
|
||
const colorInfo = findShadowColor(layer);
|
||
// Unresolvable colors (currentColor, external vars): don't guess.
|
||
if (!colorInfo || !colorInfo.color) continue;
|
||
const c = colorInfo.color;
|
||
if ((c.a ?? 1) < 0.1) continue;
|
||
const chroma = Math.max(c.r, c.g, c.b) - Math.min(c.r, c.g, c.b);
|
||
if (chroma < 30) continue;
|
||
const vals = extractShadowLengths(layer, colorInfo.start, colorInfo.end);
|
||
const x = vals[0] || 0, y = vals[1] || 0, blur = vals[2] || 0, sp = vals[3] || 0;
|
||
if (blur !== 0 || sp !== 0) continue;
|
||
const ax = Math.abs(x), ay = Math.abs(y);
|
||
const isStripe = (ax >= 3 && ax <= 12 && ay === 0) || (ay >= 3 && ay <= 12 && ax === 0);
|
||
if (!isStripe) continue;
|
||
if (seen.has(selector)) break;
|
||
seen.add(selector);
|
||
const edge = ay === 0 ? (x > 0 ? 'left' : 'right') : (y > 0 ? 'top' : 'bottom');
|
||
findings.push({
|
||
id: 'side-tab',
|
||
snippet: `${selector} — inset box-shadow ${ay === 0 ? ax : ay}px stripe (${edge})`,
|
||
});
|
||
break;
|
||
}
|
||
}
|
||
return findings;
|
||
}
|
||
|
||
// Collect @keyframes names whose body travels horizontally — the marquee
|
||
// loop. X travel is measured across every translateX/translate/translate3d
|
||
// X component in the body: a centered element animating something else
|
||
// keeps a constant -50% X (zero travel) and never qualifies, while a
|
||
// ticker moves from its resting position to a large offset. Keyframes
|
||
// with a single X sample that also vary scale/opacity read as pulses or
|
||
// breathes, not marquees.
|
||
function collectMarqueeKeyframes(content) {
|
||
const names = new Set();
|
||
const re = /@(?:-webkit-)?keyframes\s+([\w-]+)\s*\{/g;
|
||
let m;
|
||
while ((m = re.exec(content)) !== null) {
|
||
let depth = 1;
|
||
let i = re.lastIndex;
|
||
while (i < content.length && depth > 0) {
|
||
const ch = content.charCodeAt(i);
|
||
if (ch === 0x7b /* { */) depth++;
|
||
else if (ch === 0x7d /* } */) depth--;
|
||
i++;
|
||
}
|
||
const body = content.slice(re.lastIndex, Math.max(re.lastIndex, i - 1));
|
||
re.lastIndex = i;
|
||
|
||
// Only percentage travel qualifies: a content marquee translates by a
|
||
// fraction of its own (unknown) track width, so generated tickers use
|
||
// -50% / -100%. Pixel-travel loops are bespoke product animations —
|
||
// sweeping playheads, progress indicators — not marquees.
|
||
const pct = [];
|
||
const xRe = /\btranslate(?:X|3d)?\(\s*(-?[\d.]+)%/gi;
|
||
let xm;
|
||
while ((xm = xRe.exec(body)) !== null) pct.push(parseFloat(xm[1]));
|
||
if (pct.length === 0) continue;
|
||
if (pct.length === 1 && /\bscale\(|\bopacity\s*:/i.test(body)) continue;
|
||
// Implicit start: a lone declared X animates from the element's
|
||
// resting position, so its magnitude is the travel.
|
||
const travelPct = pct.length > 1 ? Math.max(...pct) - Math.min(...pct) : Math.abs(pct[0]);
|
||
if (travelPct >= 20) names.add(m[1]);
|
||
}
|
||
return names;
|
||
}
|
||
|
||
// Auto-scrolling marquee: a <marquee> element, or an infinite animation
|
||
// bound to a keyframe loop that travels a large horizontal distance.
|
||
// Rotation/opacity animations never qualify (no X travel); JS-driven
|
||
// carousels with user controls have no infinite CSS X-loop to match.
|
||
function scanCssTextForMarquee(content) {
|
||
const findings = [];
|
||
if (/<marquee\b/i.test(content)) {
|
||
findings.push({ id: 'marquee', snippet: '<marquee> element' });
|
||
}
|
||
const marqueeKeyframes = collectMarqueeKeyframes(content);
|
||
if (marqueeKeyframes.size === 0) return findings;
|
||
const seen = new Set();
|
||
const ruleRe = new RegExp(CSS_RULE_BLOCK_SOURCE, 'g');
|
||
let m;
|
||
while ((m = ruleRe.exec(content)) !== null) {
|
||
const selector = m[1].trim();
|
||
const decls = parseCssDeclBlock(m[2]);
|
||
for (const name of infiniteAnimationNames(decls)) {
|
||
if (!marqueeKeyframes.has(name)) continue;
|
||
const key = `${selector} ${name}`;
|
||
if (seen.has(key)) continue;
|
||
seen.add(key);
|
||
findings.push({ id: 'marquee', snippet: `${selector} — infinite horizontal loop animation "${name}"` });
|
||
}
|
||
}
|
||
return findings;
|
||
}
|
||
|
||
// Collect @keyframes names and whether each one reads as a "pulse" —
|
||
// i.e. it varies opacity, scale, or box-shadow. Rotation-only keyframes
|
||
// (spinners) are explicitly not pulses.
|
||
function collectPulseKeyframes(content) {
|
||
const map = new Map();
|
||
const re = /@(?:-webkit-)?keyframes\s+([\w-]+)\s*\{/g;
|
||
let m;
|
||
while ((m = re.exec(content)) !== null) {
|
||
let depth = 1;
|
||
let i = re.lastIndex;
|
||
while (i < content.length && depth > 0) {
|
||
const ch = content.charCodeAt(i);
|
||
if (ch === 0x7b /* { */) depth++;
|
||
else if (ch === 0x7d /* } */) depth--;
|
||
i++;
|
||
}
|
||
const body = content.slice(re.lastIndex, Math.max(re.lastIndex, i - 1));
|
||
const pulses = /\bopacity\s*:/i.test(body)
|
||
|| /\bbox-shadow\s*:/i.test(body)
|
||
|| /\btransform\s*:[^;{}]*\bscale/i.test(body);
|
||
if (!map.has(m[1]) || pulses) map.set(m[1], pulses);
|
||
re.lastIndex = i;
|
||
}
|
||
return map;
|
||
}
|
||
|
||
const ANIMATION_VALUE_KEYWORDS = new Set([
|
||
'ease', 'ease-in', 'ease-out', 'ease-in-out', 'linear',
|
||
'infinite', 'alternate', 'alternate-reverse', 'normal', 'reverse',
|
||
'none', 'forwards', 'backwards', 'both', 'running', 'paused',
|
||
'step-start', 'step-end', 'inherit', 'initial', 'unset',
|
||
]);
|
||
|
||
// Extract animation names that run with iteration-count: infinite from a
|
||
// declaration block (shorthand layers or animation-name + iteration-count).
|
||
function infiniteAnimationNames(decls) {
|
||
const out = [];
|
||
const shorthand = decls.get('animation');
|
||
if (shorthand) {
|
||
for (const layer of shorthand.split(/,(?![^(]*\))/)) {
|
||
if (!/\binfinite\b/i.test(layer)) continue;
|
||
const name = layer.split(/\s+/).find(t =>
|
||
/^[a-zA-Z_-][\w-]*$/.test(t) && !ANIMATION_VALUE_KEYWORDS.has(t.toLowerCase()));
|
||
if (name) out.push(name);
|
||
}
|
||
}
|
||
const nameDecl = decls.get('animation-name');
|
||
if (nameDecl && /\binfinite\b/i.test(decls.get('animation-iteration-count') || '')) {
|
||
for (const raw of nameDecl.split(',')) {
|
||
const t = raw.trim();
|
||
if (t && t.toLowerCase() !== 'none') out.push(t);
|
||
}
|
||
}
|
||
return out;
|
||
}
|
||
|
||
function isRoundDotRadius(radiusValue, w, h) {
|
||
if (!radiusValue) return false;
|
||
const first = String(radiusValue).trim().split(/\s+/)[0];
|
||
const pct = first.match(/^([\d.]+)%$/);
|
||
if (pct) return parseFloat(pct[1]) >= 40;
|
||
const px = cssLengthToPx(first);
|
||
if (px == null) return false;
|
||
return px >= 999 || px >= 0.4 * Math.min(w, h);
|
||
}
|
||
|
||
// Small circular indicator bound to an infinite pulse animation — the
|
||
// decorative "live" dot. Gates: tiny (<= 16px square-ish), round
|
||
// (border-radius >= 40% or pill values), and an infinite animation whose
|
||
// keyframes vary opacity/scale/box-shadow (or a pulse/blink/ping name when
|
||
// the keyframes aren't in the scanned text). Rotation-only animations
|
||
// (spinners) never flag.
|
||
function scanCssTextForPulsingDot(content) {
|
||
const customProps = collectCssCustomProps(content);
|
||
const keyframes = collectPulseKeyframes(content);
|
||
const findings = [];
|
||
const seen = new Set();
|
||
const ruleRe = new RegExp(CSS_RULE_BLOCK_SOURCE, 'g');
|
||
let m;
|
||
while ((m = ruleRe.exec(content)) !== null) {
|
||
const selector = m[1].trim();
|
||
const decls = parseCssDeclBlock(m[2]);
|
||
const names = infiniteAnimationNames(decls);
|
||
if (names.length === 0) continue;
|
||
const pulseName = names.find(n => {
|
||
const known = keyframes.get(n);
|
||
if (known != null) return known;
|
||
return /pulse|blink|ping/i.test(n);
|
||
});
|
||
if (!pulseName) continue;
|
||
|
||
const w = cssLengthToPx(resolveVarRefs(
|
||
decls.get('width') || decls.get('inline-size') || '', customProps));
|
||
const h = cssLengthToPx(resolveVarRefs(
|
||
decls.get('height') || decls.get('block-size') || '', customProps));
|
||
if (w == null || h == null || w < 2 || h < 2 || w > 16 || h > 16) continue;
|
||
|
||
const radius = resolveVarRefs(decls.get('border-radius') || '', customProps);
|
||
if (!isRoundDotRadius(radius, w, h)) continue;
|
||
|
||
if (seen.has(selector)) continue;
|
||
seen.add(selector);
|
||
findings.push({
|
||
id: 'pulsing-dot',
|
||
snippet: `${selector} — ${w}x${h}px dot with infinite "${pulseName}" animation`,
|
||
});
|
||
}
|
||
|
||
// Tailwind utilities: animate-ping / animate-pulse on a tiny rounded-full
|
||
// element declared entirely in the class attribute.
|
||
const classRe = /class\s*=\s*(?:"([^"]*)"|'([^']*)')/gi;
|
||
let cm;
|
||
while ((cm = classRe.exec(content)) !== null) {
|
||
const cls = cm[1] || cm[2] || '';
|
||
const anim = cls.match(/\banimate-(ping|pulse)\b/);
|
||
if (!anim) continue;
|
||
if (!/\brounded-full\b/.test(cls)) continue;
|
||
if (!/\b(?:w|h|size)-(?:1|1\.5|2|2\.5|3|3\.5|4)\b/.test(cls)) continue;
|
||
const key = `tw:${cls}`;
|
||
if (seen.has(key)) continue;
|
||
seen.add(key);
|
||
findings.push({
|
||
id: 'pulsing-dot',
|
||
snippet: `animate-${anim[1]} on tiny rounded-full element`,
|
||
});
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
/**
|
||
* Regex-on-HTML checks shared between browser and Node page-level detection.
|
||
* These don't need DOM access, just the raw HTML string.
|
||
*/
|
||
function checkHtmlPatterns(html) {
|
||
const findings = [];
|
||
|
||
// --- Color ---
|
||
|
||
// AI color palette: purple/violet
|
||
const purpleHexRe = /#(?:7c3aed|8b5cf6|a855f7|9333ea|7e22ce|6d28d9|6366f1|764ba2|667eea)\b/gi;
|
||
if (purpleHexRe.test(html)) {
|
||
const purpleTextRe = /(?:(?:^|;)\s*color\s*:\s*(?:.*?)(?:#(?:7c3aed|8b5cf6|a855f7|9333ea|7e22ce|6d28d9))|gradient.*?#(?:7c3aed|8b5cf6|a855f7|764ba2|667eea))/gi;
|
||
if (purpleTextRe.test(html)) {
|
||
findings.push({ id: 'ai-color-palette', snippet: 'Purple/violet accent colors detected' });
|
||
}
|
||
}
|
||
|
||
// Gradient text (background-clip: text + gradient)
|
||
const gradientRe = /(?:-webkit-)?background-clip\s*:\s*text/gi;
|
||
let gm;
|
||
while ((gm = gradientRe.exec(html)) !== null) {
|
||
const start = Math.max(0, gm.index - 200);
|
||
const context = html.substring(start, gm.index + gm[0].length + 200);
|
||
if (/gradient/i.test(context)) {
|
||
findings.push({ id: 'gradient-text', snippet: 'background-clip: text + gradient' });
|
||
break;
|
||
}
|
||
}
|
||
if (/\bbg-clip-text\b/.test(html) && /\bbg-gradient-to-/.test(html)) {
|
||
findings.push({ id: 'gradient-text', snippet: 'bg-clip-text + bg-gradient (Tailwind)' });
|
||
}
|
||
|
||
// --- Borders ---
|
||
|
||
// Side-tab accent stripe drawn as an absolutely-positioned pseudo-element
|
||
// (no border property involved, so the element-level border checks and
|
||
// the border-left regexes never see it).
|
||
findings.push(...scanCssTextForPseudoStripe(html));
|
||
|
||
// Side-tab accent stripe drawn as a single-edge inset box-shadow.
|
||
findings.push(...scanCssTextForInsetStripe(html));
|
||
|
||
// --- Layout ---
|
||
|
||
// Monotonous spacing
|
||
const spacingValues = [];
|
||
const spacingRe = /(?:padding|margin)(?:-(?:top|right|bottom|left))?\s*:\s*(\d+)px/gi;
|
||
let sm;
|
||
while ((sm = spacingRe.exec(html)) !== null) {
|
||
const v = parseInt(sm[1], 10);
|
||
if (v > 0 && v < 200) spacingValues.push(v);
|
||
}
|
||
const gapRe = /gap\s*:\s*(\d+)px/gi;
|
||
while ((sm = gapRe.exec(html)) !== null) {
|
||
spacingValues.push(parseInt(sm[1], 10));
|
||
}
|
||
const twSpaceRe = /\b(?:p|px|py|pt|pb|pl|pr|m|mx|my|mt|mb|ml|mr|gap)-(\d+)\b/g;
|
||
while ((sm = twSpaceRe.exec(html)) !== null) {
|
||
spacingValues.push(parseInt(sm[1], 10) * 4);
|
||
}
|
||
const remSpacingRe = /(?:padding|margin)(?:-(?:top|right|bottom|left))?\s*:\s*([\d.]+)rem/gi;
|
||
while ((sm = remSpacingRe.exec(html)) !== null) {
|
||
const v = Math.round(parseFloat(sm[1]) * 16);
|
||
if (v > 0 && v < 200) spacingValues.push(v);
|
||
}
|
||
const roundedSpacing = spacingValues.map(v => Math.round(v / 4) * 4);
|
||
if (roundedSpacing.length >= 10) {
|
||
const counts = {};
|
||
for (const v of roundedSpacing) counts[v] = (counts[v] || 0) + 1;
|
||
const maxCount = Math.max(...Object.values(counts));
|
||
const dominantPct = maxCount / roundedSpacing.length;
|
||
const unique = [...new Set(roundedSpacing)].filter(v => v > 0);
|
||
if (dominantPct > 0.6 && unique.length <= 3) {
|
||
const dominant = Object.entries(counts).sort((a, b) => b[1] - a[1])[0][0];
|
||
findings.push({
|
||
id: 'monotonous-spacing',
|
||
snippet: `~${dominant}px used ${maxCount}/${roundedSpacing.length} times (${Math.round(dominantPct * 100)}%)`,
|
||
});
|
||
}
|
||
}
|
||
|
||
// --- Motion ---
|
||
|
||
// Bounce/elastic animation names
|
||
const bounceRe = /animation(?:-name)?\s*:\s*([^;{}]*(?:bounce|elastic|wobble|jiggle|spring)[^;{}]*)/gi;
|
||
const bounceMatch = bounceRe.exec(html);
|
||
if (bounceMatch) {
|
||
const animationToken = bounceMatch[1]
|
||
.split(/[,\s]+/)
|
||
.find((part) => /bounce|elastic|wobble|jiggle|spring/i.test(part));
|
||
findings.push({ id: 'bounce-easing', snippet: `animation: ${animationToken || bounceMatch[1].trim()}` });
|
||
}
|
||
|
||
// Overshoot cubic-bezier
|
||
const bezierRe = /cubic-bezier\(\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*\)/g;
|
||
let bm;
|
||
while ((bm = bezierRe.exec(html)) !== null) {
|
||
const y1 = parseFloat(bm[2]), y2 = parseFloat(bm[4]);
|
||
if (y1 < -0.1 || y1 > 1.1 || y2 < -0.1 || y2 > 1.1) {
|
||
findings.push({ id: 'bounce-easing', snippet: `cubic-bezier(${bm[1]}, ${bm[2]}, ${bm[3]}, ${bm[4]})` });
|
||
break;
|
||
}
|
||
}
|
||
|
||
// Layout property transitions
|
||
const transRe = /transition(?:-property)?\s*:\s*([^;{}]+)/gi;
|
||
let tm;
|
||
while ((tm = transRe.exec(html)) !== null) {
|
||
const val = tm[1].toLowerCase();
|
||
if (/\ball\b/.test(val)) continue;
|
||
const found = val.match(/\b(?:(?:max|min)-)?(?:width|height)\b|\bpadding(?:-(?:top|right|bottom|left))?\b|\bmargin(?:-(?:top|right|bottom|left))?\b/gi);
|
||
if (found) {
|
||
findings.push({ id: 'layout-transition', snippet: `transition: ${found.join(', ')}` });
|
||
break;
|
||
}
|
||
}
|
||
|
||
// Pulsing status dots (tiny circular elements on infinite pulse animations)
|
||
findings.push(...scanCssTextForPulsingDot(html));
|
||
|
||
// Auto-scrolling marquees (<marquee> or infinite horizontal loop animations)
|
||
findings.push(...scanCssTextForMarquee(html));
|
||
|
||
// --- Dark glow / chromatic halo shadows ---
|
||
|
||
const glowHits = scanCssTextForGlow(html);
|
||
if (glowHits.length > 0) {
|
||
findings.push({ id: 'dark-glow', snippet: glowHits[0].snippet });
|
||
}
|
||
|
||
// Radial-gradient background halo (gradient-drawn sibling of dark-glow)
|
||
const haloHits = scanCssTextForRadialHalo(html);
|
||
if (haloHits.length > 0) {
|
||
findings.push({ id: 'radial-halo', snippet: haloHits[0].snippet });
|
||
}
|
||
|
||
// --- Provider tells (gated): repeating-gradient stripes (GPT) ---
|
||
if (/repeating-(?:linear|radial|conic)-gradient\s*\(/i.test(html)) {
|
||
findings.push({ id: 'repeating-stripes-gradient', snippet: 'repeating-gradient decorative stripes' });
|
||
}
|
||
|
||
// --- Provider tells (gated): two-axis grid-line background (Codex/GPT) ---
|
||
// The Codex grid tell is two hairline `linear-gradient(... <color> 1px,
|
||
// transparent 1px)` layers (one per axis) tiled by a repeating
|
||
// `background-size` cell. Both signals must co-occur in the SAME style block
|
||
// (a CSS rule body or one inline `style="..."`): two hairline stops WITHOUT a
|
||
// tiling background-size is a fixed crosshair, not a grid, and a single
|
||
// hairline is a legitimate ruled line. Scoping to one block also stops
|
||
// unrelated single-axis rules on separate elements from adding up across the
|
||
// page. Count hairlines only inside `background`/`background-image` values so
|
||
// a hairline in an unrelated property (mask-image, border-image) can't stand
|
||
// in for the second axis. Colors like `oklch(96% 0.012 82 / 0.055)` carry
|
||
// nested parens, so match the hairline stop directly rather than parsing
|
||
// whole gradient layers.
|
||
{
|
||
// Hairline stop shapes: the classic leading form (`<color> 1px,
|
||
// transparent 1px`) and the inverted end-of-tile form
|
||
// (`transparent calc(100% - 1px), <color> 1px`).
|
||
const hairlineRe = /\b\d{1,3}px\s*,\s*transparent\s+\d{1,3}px/gi;
|
||
const invertedHairlineRe = /transparent\s+calc\(100%\s*-\s*\d{1,3}px\)/gi;
|
||
// Tiling cell: a background-size declaration with px values, or the
|
||
// background shorthand's `/ <size>` slot (only matched inside
|
||
// background values so border-radius slash syntax can't stand in).
|
||
const sizeDeclPxRe = /background-size\s*:[^;{}"']*\b\d{1,3}px\b/i;
|
||
const sizeDeclPxPairRe = /background-size\s*:[^;{}"']*\b\d{1,3}px\s+\d{1,3}px/i;
|
||
const shorthandPxAnyRe = /\/\s*\d{1,3}px\b/;
|
||
const shorthandPxPairRe = /\/\s*\d{1,3}px\s+\d{1,3}px/;
|
||
const bgDeclRe = /\bbackground(?:-image)?\s*:\s*([^;{}"']*)/gi;
|
||
const blockRe = /\{([^{}]*)\}|style\s*=\s*"([^"]*)"|style\s*=\s*'([^']*)'/gi;
|
||
let blk;
|
||
while ((blk = blockRe.exec(html)) !== null) {
|
||
const block = blk[1] || blk[2] || blk[3] || '';
|
||
let hairlineCount = 0;
|
||
let bgJoined = '';
|
||
let bm;
|
||
bgDeclRe.lastIndex = 0;
|
||
while ((bm = bgDeclRe.exec(block)) !== null) {
|
||
hairlineCount += (bm[1].match(hairlineRe) || []).length;
|
||
hairlineCount += (bm[1].match(invertedHairlineRe) || []).length;
|
||
bgJoined += bm[1] + ';';
|
||
}
|
||
if (hairlineCount === 0) continue;
|
||
const hasPxCell = sizeDeclPxRe.test(block) || shorthandPxAnyRe.test(bgJoined);
|
||
const hasPxPairCell = sizeDeclPxPairRe.test(block) || shorthandPxPairRe.test(bgJoined);
|
||
// Two hairline layers + any px tile = the classic two-axis grid.
|
||
// A single hairline layer only counts when tiled by a px pair cell
|
||
// (e.g. `/ 40px 40px`) — a page-scale repeating line field. Single
|
||
// hairlines tiled by percentage cells (`background-size: 25% 100%`)
|
||
// are structural rules on data-viz tracks/graphs and stay legal.
|
||
if ((hairlineCount >= 2 && hasPxCell) || hasPxPairCell) {
|
||
findings.push({
|
||
id: 'codex-grid-background',
|
||
snippet: hairlineCount >= 2
|
||
? 'two-axis grid-line gradient background'
|
||
: 'px-tiled hairline line-field background',
|
||
});
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
// --- Provider tells (gated): "X theater" framing copy (GPT) ---
|
||
// Lives here (regex-on-HTML) rather than in the text-content analyzers so it
|
||
// runs in the bundled browser path too, not just the CLI/static path.
|
||
{
|
||
const bodyText = html
|
||
.replace(/<script\b[^>]*>[\s\S]*?<\/script>/gi, ' ')
|
||
.replace(/<style\b[^>]*>[\s\S]*?<\/style>/gi, ' ')
|
||
.replace(/<[^>]+>/g, ' ');
|
||
const tm = /\b(\w+)\s+theater\b/i.exec(bodyText);
|
||
if (tm) findings.push({ id: 'theater-slop-phrase', snippet: `"${tm[0].trim()}"` });
|
||
}
|
||
|
||
// --- Provider tells (gated): image hover transform (Gemini) ---
|
||
// A CSS `img...:hover { transform: ... }` rule, or a Tailwind hover:scale /
|
||
// hover:rotate / hover:translate utility on an <img>. Each distinct
|
||
// mechanism is its own finding.
|
||
const imgHoverCss = /\bimg\b[^,{}]*:hover\b[^{}]*\{[^}]*\btransform\s*:\s*(?:scale|rotate|translate|matrix|skew)/i;
|
||
if (imgHoverCss.test(html)) {
|
||
findings.push({ id: 'image-hover-transform', snippet: 'img:hover { transform } rule' });
|
||
}
|
||
const imgTagRe = /<img\b[^>]*\bclass\s*=\s*"([^"]*)"/gi;
|
||
let im;
|
||
while ((im = imgTagRe.exec(html)) !== null) {
|
||
if (/\bhover:(?:scale|rotate|translate|skew)-/.test(im[1])) {
|
||
findings.push({ id: 'image-hover-transform', snippet: 'Tailwind hover transform on <img>' });
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
// ─── Section 4: resolveBackground (unified) ─────────────────────────────────
|
||
|
||
// Read the element's own background color, computed-style first, with a
|
||
// jsdom-friendly fallback that parses the inline `background:` shorthand
|
||
// from the raw style attribute. jsdom (~v29) does not decompose the
|
||
// shorthand into `backgroundColor`, so without this fallback the CLI silently
|
||
// returns null for any element styled via `background: rgb(...)` or
|
||
// `background: #abc`. Real browsers always decompose, so the fallback is
|
||
// a no-op there.
|
||
function readOwnBackgroundColor(el, computedStyle) {
|
||
const bg = parseRgb(computedStyle.backgroundColor);
|
||
if (DETECTOR_IS_BROWSER || (bg && bg.a >= 0.1)) return bg;
|
||
const rawStyle = el.getAttribute?.('style') || '';
|
||
const bgMatch = rawStyle.match(/background(?:-color)?\s*:\s*([^;]+)/i);
|
||
const inlineBg = bgMatch ? bgMatch[1].trim() : '';
|
||
if (!inlineBg) return bg;
|
||
if (/gradient/i.test(inlineBg) || /url\s*\(/i.test(inlineBg)) return bg;
|
||
const fromRgb = parseRgb(inlineBg);
|
||
if (fromRgb) return fromRgb;
|
||
const hexMatch = inlineBg.match(/#([0-9a-f]{6}|[0-9a-f]{3})\b/i);
|
||
if (hexMatch) {
|
||
const h = hexMatch[1];
|
||
if (h.length === 6) {
|
||
return { r: parseInt(h.slice(0, 2), 16), g: parseInt(h.slice(2, 4), 16), b: parseInt(h.slice(4, 6), 16), a: 1 };
|
||
}
|
||
return { r: parseInt(h[0] + h[0], 16), g: parseInt(h[1] + h[1], 16), b: parseInt(h[2] + h[2], 16), a: 1 };
|
||
}
|
||
return bg;
|
||
}
|
||
|
||
function resolveBackground(el, win, customPropMap) {
|
||
let current = el;
|
||
// Translucent layers (0.1 < a < 1) found on the way down to an opaque
|
||
// base. A browser composites these over the base; the old behavior
|
||
// either returned them as-if-opaque (browser mode) or skipped them
|
||
// entirely (static mode), both of which misstate the effective surface
|
||
// for contrast checks (e.g. `background: color-mix(in oklab, var(--hot)
|
||
// 16%, transparent)` chips on dark pages).
|
||
const overlays = [];
|
||
const flatten = (base) => {
|
||
let acc = base;
|
||
for (let i = overlays.length - 1; i >= 0; i--) acc = compositeColorOver(overlays[i], acc);
|
||
return acc;
|
||
};
|
||
while (current && current.nodeType === 1) {
|
||
const style = DETECTOR_IS_BROWSER ? getComputedStyle(current) : win.getComputedStyle(current);
|
||
const bgImage = style.backgroundImage || '';
|
||
const hasGradientOrUrl = bgImage && bgImage !== 'none' && (/gradient/i.test(bgImage) || /url\s*\(/i.test(bgImage));
|
||
|
||
// Try the solid bg-color FIRST. If the element has both a solid color
|
||
// and a gradient/url overlay (a common pattern: `background: var(--paper)
|
||
// radial-gradient(...)` for paper-grain texture), the solid color is the
|
||
// dominant visible surface for contrast purposes; the overlay is
|
||
// decorative. The old behavior bailed on any gradient ancestor, which
|
||
// caused massive false-positive contrast findings on grain-textured
|
||
// body backgrounds.
|
||
// Real browsers serialize wide-gamut computed values as oklab()/oklch()
|
||
// (e.g. any color-mix() result), which plain parseRgb misses.
|
||
let bg = parseRgb(style.backgroundColor) || parseAnyColor(style.backgroundColor);
|
||
if (!DETECTOR_IS_BROWSER && (!bg || bg.a < 0.1)) {
|
||
// jsdom returns literal "var(--X)" / "oklch(...)" strings. Resolve
|
||
// through customPropMap so Tailwind v4 color tokens become RGB.
|
||
if (customPropMap) {
|
||
bg = parseColorResolved(style.backgroundColor, customPropMap);
|
||
}
|
||
if (!bg || bg.a < 0.1) {
|
||
// Inline-style fallback. jsdom doesn't decompose background
|
||
// shorthand, so colors set via inline style are otherwise invisible.
|
||
const rawStyle = current.getAttribute?.('style') || '';
|
||
const bgMatch = rawStyle.match(/background(?:-color)?\s*:\s*([^;]+)/i);
|
||
const inlineBg = bgMatch ? bgMatch[1].trim() : '';
|
||
if (inlineBg && !/gradient/i.test(inlineBg) && !/url\s*\(/i.test(inlineBg)) {
|
||
bg = parseColorResolved(inlineBg, customPropMap) || parseAnyColor(inlineBg);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (bg && bg.a > 0.1) {
|
||
if (bg.a >= 0.99) return flatten(bg);
|
||
overlays.push(bg);
|
||
}
|
||
// No solid bg-color at this level. If THIS level has a gradient/url
|
||
// with no underlying solid color we can read:
|
||
// • on body/html: assume white. Body-level gradients are almost
|
||
// always decorative texture (paper grain, noise) on top of a
|
||
// solid bg-color the page set via `background: var(--paper)`
|
||
// shorthand — which jsdom can't decompose into bg-color. The
|
||
// downstream gradient-stops fallback path produces catastrophic
|
||
// false positives in this case (gradient noise stops have
|
||
// accidental browns/blacks that look like card backgrounds).
|
||
// • on other elements: bail to null and let the caller fall back
|
||
// to gradient stops (gradient buttons / hero sections are real
|
||
// bgs worth checking against).
|
||
if (hasGradientOrUrl) {
|
||
if (current.tagName === 'BODY' || current.tagName === 'HTML') {
|
||
return flatten({ r: 255, g: 255, b: 255, a: 1 });
|
||
}
|
||
return null;
|
||
}
|
||
current = current.parentElement;
|
||
}
|
||
return flatten({ r: 255, g: 255, b: 255, a: 1 });
|
||
}
|
||
|
||
// Walk parents looking for a gradient background and return its color stops.
|
||
// Used as a fallback when resolveBackground() returns null because the
|
||
// effective background is a gradient (no single solid color to compare against).
|
||
function resolveGradientStops(el, win) {
|
||
let current = el;
|
||
while (current && current.nodeType === 1) {
|
||
const style = DETECTOR_IS_BROWSER ? getComputedStyle(current) : win.getComputedStyle(current);
|
||
const bgImage = style.backgroundImage || '';
|
||
if (bgImage && bgImage !== 'none' && /gradient/i.test(bgImage)) {
|
||
const stops = parseGradientColors(bgImage);
|
||
if (stops.length > 0) return stops;
|
||
}
|
||
if (!DETECTOR_IS_BROWSER) {
|
||
// jsdom doesn't decompose `background:` shorthand — peek at the raw inline style
|
||
const rawStyle = current.getAttribute?.('style') || '';
|
||
const bgMatch = rawStyle.match(/background(?:-image)?\s*:\s*([^;]+)/i);
|
||
if (bgMatch && /gradient/i.test(bgMatch[1])) {
|
||
const stops = parseGradientColors(bgMatch[1]);
|
||
if (stops.length > 0) return stops;
|
||
}
|
||
}
|
||
current = current.parentElement;
|
||
}
|
||
return null;
|
||
}
|
||
|
||
// Parse a single CSS length token to pixels. Accepts "12px", "50%", a
|
||
// shorthand like "12px 4px" (uses the first value), or empty / null.
|
||
// Returns the pixel value, or null when the input is unparseable.
|
||
// Percentages convert against `widthPx` when one is supplied. Without a
|
||
// usable width (jsdom returns "auto" for many real-world elements,
|
||
// which parseFloat collapses to 0), fall back to the raw percentage
|
||
// number so callers gating on `> 0` (border-accent-on-rounded,
|
||
// isCardLike's hasRadius) still see a positive value, matching the
|
||
// original parseFloat("50%") === 50 behavior.
|
||
function parseRadiusToPx(value, widthPx) {
|
||
if (!value || typeof value !== 'string') return null;
|
||
const trimmed = value.trim();
|
||
if (!trimmed) return null;
|
||
const first = trimmed.split(/\s+/)[0];
|
||
const num = parseFloat(first);
|
||
if (Number.isNaN(num)) return null;
|
||
if (/%$/.test(first)) {
|
||
if (widthPx && widthPx > 0) return (num / 100) * widthPx;
|
||
return num;
|
||
}
|
||
return num;
|
||
}
|
||
|
||
function resolveBorderRadiusPx(el, style, widthPx, win) {
|
||
const fromComputed = parseRadiusToPx(style.borderRadius, widthPx);
|
||
if (fromComputed !== null) return fromComputed;
|
||
return 0;
|
||
}
|
||
|
||
// ─── Section 5: Element Adapters ────────────────────────────────────────────
|
||
|
||
// Browser adapters — call getComputedStyle/getBoundingClientRect on live DOM
|
||
|
||
// Selected-state context for accent stripes. Only an actual selection
|
||
// marker exempts the stripe as the standard active-item indicator:
|
||
// aria-selected="true", aria-current (any non-false value), or an
|
||
// active/current/selected class hint. Tab-strip MEMBERSHIP alone
|
||
// ([role=tablist]/[role=tab]/.tabs ancestry, aria-selected="false")
|
||
// deliberately does not — a chromatic stripe repeated on every tab in
|
||
// the group, or on every menu item, is decoration, not state; the
|
||
// selected item's own underline stays legal.
|
||
function isTabContextElement(el) {
|
||
if (!el) return false;
|
||
try {
|
||
if (el.closest?.('[aria-selected="true"], [aria-current]:not([aria-current="false"])')) return true;
|
||
} catch { /* selector engine differences — fall through to class scan */ }
|
||
let cur = el, depth = 0;
|
||
while (cur && cur.nodeType === 1 && depth < 6) {
|
||
const cls = String(cur.getAttribute?.('class') || cur.className || '');
|
||
if (/(?:^|[\s_-])(?:active|current|selected)(?:$|[\s_-])/i.test(cls)) return true;
|
||
cur = cur.parentElement;
|
||
depth++;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function checkElementBordersDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (BORDER_SAFE_TAGS.has(tag)) return [];
|
||
const rect = el.getBoundingClientRect();
|
||
if (rect.width < 20 || rect.height < 20) return [];
|
||
const style = getComputedStyle(el);
|
||
const sides = ['Top', 'Right', 'Bottom', 'Left'];
|
||
const widths = {}, colors = {};
|
||
for (const s of sides) {
|
||
widths[s] = parseFloat(style[`border${s}Width`]) || 0;
|
||
colors[s] = style[`border${s}Color`] || '';
|
||
}
|
||
const ownBg = parseRgb(style.backgroundColor) || parseAnyColor(style.backgroundColor);
|
||
return checkBorders(tag, widths, colors, parseFloat(style.borderRadius) || 0, {
|
||
tabContext: isTabContextElement(el),
|
||
badgeLike: !!(ownBg && (ownBg.a ?? 1) > 0.1),
|
||
});
|
||
}
|
||
|
||
function checkElementColorsDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
// No early SAFE_TAGS bail here — checkColors() does its own gating that
|
||
// includes the styled-button exception for <a> / <button> with their own
|
||
// opaque background. Bailing here would prevent that exception from firing.
|
||
const rect = el.getBoundingClientRect();
|
||
if (rect.width < 10 || rect.height < 10) return [];
|
||
const style = getComputedStyle(el);
|
||
const directText = [...el.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join('');
|
||
const hasDirectText = directText.trim().length > 0;
|
||
const effectiveBg = resolveBackground(el);
|
||
return checkColors({
|
||
tag,
|
||
textColor: parseRgb(style.color),
|
||
bgColor: readOwnBackgroundColor(el, style),
|
||
effectiveBg,
|
||
effectiveBgStops: effectiveBg ? null : resolveGradientStops(el),
|
||
fontSize: parseFloat(style.fontSize) || 16,
|
||
fontWeight: parseInt(style.fontWeight) || 400,
|
||
hasDirectText,
|
||
isEmojiOnly: isEmojiOnlyText(directText),
|
||
bgClip: style.webkitBackgroundClip || style.backgroundClip || '',
|
||
bgImage: style.backgroundImage || '',
|
||
classList: el.getAttribute('class') || '',
|
||
});
|
||
}
|
||
|
||
function checkElementIconTileDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (!HEADING_TAGS.has(tag)) return [];
|
||
const sibling = el.previousElementSibling;
|
||
if (!sibling) return [];
|
||
|
||
const sibRect = sibling.getBoundingClientRect();
|
||
const headRect = el.getBoundingClientRect();
|
||
const sibStyle = getComputedStyle(sibling);
|
||
|
||
// The tile may either contain an <svg>/<i> icon child, OR the tile itself
|
||
// may contain an emoji/symbol character directly as its only text content
|
||
// (the "card-icon" pattern from many AI-generated demos).
|
||
const iconChild = sibling.querySelector('svg, i[data-lucide], i[class*="fa-"], i[class*="icon"]');
|
||
const iconRect = iconChild?.getBoundingClientRect();
|
||
const sibDirectText = [...sibling.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join('');
|
||
const hasInlineEmojiIcon = sibling.children.length === 0 && isEmojiOnlyText(sibDirectText);
|
||
|
||
return checkIconTile({
|
||
headingTag: tag,
|
||
headingText: el.textContent || '',
|
||
headingTop: headRect.top,
|
||
siblingTag: sibling.tagName.toLowerCase(),
|
||
siblingWidth: sibRect.width,
|
||
siblingHeight: sibRect.height,
|
||
siblingBottom: sibRect.bottom,
|
||
siblingBgColor: parseRgb(sibStyle.backgroundColor),
|
||
siblingBgImage: sibStyle.backgroundImage || '',
|
||
siblingBorderWidth: parseFloat(sibStyle.borderTopWidth) || 0,
|
||
siblingBorderRadius: parseFloat(sibStyle.borderRadius) || 0,
|
||
hasIconChild: !!iconChild || hasInlineEmojiIcon,
|
||
iconChildWidth: iconRect?.width || 0,
|
||
});
|
||
}
|
||
|
||
function checkElementItalicSerifDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (tag !== 'h1' && tag !== 'h2') return [];
|
||
const style = getComputedStyle(el);
|
||
return checkItalicSerif({
|
||
tag,
|
||
fontStyle: style.fontStyle || '',
|
||
fontFamily: style.fontFamily || '',
|
||
fontSize: parseFloat(style.fontSize) || 0,
|
||
headingText: el.textContent || '',
|
||
});
|
||
}
|
||
|
||
function domAccentDashPseudo(el) {
|
||
for (const which of ['::before', '::after']) {
|
||
let ps;
|
||
try { ps = getComputedStyle(el, which); } catch { continue; }
|
||
if (!ps || ps.content === 'none' || ps.content === '') continue;
|
||
const w = parseFloat(ps.width) || 0;
|
||
const h = parseFloat(ps.height) || 0;
|
||
if (!(w >= 8 && w <= 80 && h >= 1 && h <= 6)) continue;
|
||
const bg = parseRgb(ps.backgroundColor) || parseAnyColor(ps.backgroundColor);
|
||
if (!bg || (bg.a ?? 1) < 0.1) continue;
|
||
if (Math.max(bg.r, bg.g, bg.b) - Math.min(bg.r, bg.g, bg.b) >= 30) return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function checkElementHeroEyebrowDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (tag !== 'h1') return [];
|
||
const sibling = el.previousElementSibling;
|
||
if (!sibling) return [];
|
||
const headStyle = getComputedStyle(el);
|
||
const sibStyle = getComputedStyle(sibling);
|
||
return checkHeroEyebrow({
|
||
headingTag: tag,
|
||
headingText: el.textContent || '',
|
||
headingFontSize: parseFloat(headStyle.fontSize) || 0,
|
||
siblingTag: sibling.tagName.toLowerCase(),
|
||
siblingText: sibling.textContent || '',
|
||
siblingTextTransform: sibStyle.textTransform || '',
|
||
siblingFontSize: parseFloat(sibStyle.fontSize) || 0,
|
||
siblingLetterSpacing: parseFloat(sibStyle.letterSpacing) || 0,
|
||
siblingFontWeight: sibStyle.fontWeight || '',
|
||
siblingColor: sibStyle.color || '',
|
||
siblingHasAccentDashPseudo: domAccentDashPseudo(sibling),
|
||
});
|
||
}
|
||
|
||
// Build a map of CSS custom properties declared on :root / :host / html.
|
||
// Used to resolve var(--X) refs that jsdom returns verbatim in
|
||
// getComputedStyle. Tailwind v4 routes every utility class through
|
||
// CSS vars (font-weight: var(--font-weight-bold), font-size:
|
||
// var(--text-xs), letter-spacing: var(--tracking-widest)), so without
|
||
// resolution every style-based check silently fails on Tailwind v4
|
||
// builds — the values come back as literal "var(--font-weight-bold)"
|
||
// strings and parseFloat returns NaN.
|
||
function buildCustomPropMap(document) {
|
||
const map = new Map();
|
||
let sheets;
|
||
try { sheets = Array.from(document.styleSheets || []); }
|
||
catch { return map; }
|
||
for (const sheet of sheets) {
|
||
let rules;
|
||
try { rules = Array.from(sheet.cssRules || []); }
|
||
catch { continue; }
|
||
for (const rule of rules) {
|
||
// Style rules only (type 1). Walk @media / @supports if present.
|
||
if (rule.type === 4 /* MEDIA_RULE */ || rule.type === 12 /* SUPPORTS_RULE */) {
|
||
try { rules.push(...Array.from(rule.cssRules || [])); } catch { /* ignore */ }
|
||
continue;
|
||
}
|
||
if (rule.type !== 1 /* STYLE_RULE */) continue;
|
||
const sel = rule.selectorText || '';
|
||
if (!/(^|,\s*)(:root|html|:host)\b/i.test(sel)) continue;
|
||
const style = rule.style;
|
||
if (!style) continue;
|
||
for (let i = 0; i < style.length; i++) {
|
||
const prop = style[i];
|
||
if (!prop || !prop.startsWith('--')) continue;
|
||
const val = style.getPropertyValue(prop).trim();
|
||
if (val) map.set(prop, val);
|
||
}
|
||
}
|
||
}
|
||
return map;
|
||
}
|
||
|
||
// Resolve var(--X[, fallback]) refs in a computed-style value string.
|
||
// Recurses up to 8 levels for chained refs (--a: var(--b)). Returns
|
||
// the original string when no refs are present or the chain doesn't
|
||
// resolve. Safe to call on already-resolved values.
|
||
function resolveVarRefs(raw, customPropMap, depth = 0) {
|
||
if (typeof raw !== 'string' || !raw.includes('var(')) return raw;
|
||
if (depth > 8) return raw;
|
||
return raw.replace(/var\(\s*(--[a-zA-Z0-9_-]+)\s*(?:,\s*([^)]+))?\)/g, (_m, name, fallback) => {
|
||
const v = customPropMap.get(name);
|
||
if (v != null) return resolveVarRefs(v, customPropMap, depth + 1);
|
||
return fallback ? resolveVarRefs(fallback.trim(), customPropMap, depth + 1) : _m;
|
||
});
|
||
}
|
||
|
||
// OKLCH → sRGB conversion (Björn Ottosson's matrices). L in 0..1 (or %),
|
||
// C in 0..~0.4 typical, H in degrees. Returns clamped {r,g,b,a:1} in 0..255.
|
||
// Needed because jsdom doesn't compute oklch() values — getComputedStyle
|
||
// returns the literal "oklch(...)" string. Without this, the entire
|
||
// Tailwind v4 color palette (which is OKLCH-based) is invisible to the
|
||
// detector's contrast / color checks.
|
||
function oklchToRgb(L, C, H) {
|
||
const hRad = (H * Math.PI) / 180;
|
||
return oklabToRgb(L, C * Math.cos(hRad), C * Math.sin(hRad));
|
||
}
|
||
|
||
function oklabToRgb(L, a, b) {
|
||
const l_ = L + 0.3963377774 * a + 0.2158037573 * b;
|
||
const m_ = L - 0.1055613458 * a - 0.0638541728 * b;
|
||
const s_ = L - 0.0894841775 * a - 1.2914855480 * b;
|
||
const lc = l_ * l_ * l_, mc = m_ * m_ * m_, sc = s_ * s_ * s_;
|
||
const rLin = 4.0767416621 * lc - 3.3077115913 * mc + 0.2309699292 * sc;
|
||
const gLin = -1.2684380046 * lc + 2.6097574011 * mc - 0.3413193965 * sc;
|
||
const bLin = -0.0041960863 * lc - 0.7034186147 * mc + 1.7076147010 * sc;
|
||
const enc = (x) => {
|
||
const c = Math.max(0, Math.min(1, x));
|
||
return c <= 0.0031308 ? 12.92 * c : 1.055 * Math.pow(c, 1 / 2.4) - 0.055;
|
||
};
|
||
return {
|
||
r: Math.round(enc(rLin) * 255),
|
||
g: Math.round(enc(gLin) * 255),
|
||
b: Math.round(enc(bLin) * 255),
|
||
a: 1,
|
||
};
|
||
}
|
||
|
||
function hslToRgb(h, s, l) {
|
||
h = ((h % 360) + 360) % 360;
|
||
const c = (1 - Math.abs(2 * l - 1)) * s;
|
||
const x = c * (1 - Math.abs(((h / 60) % 2) - 1));
|
||
const m0 = l - c / 2;
|
||
const [r, g, b] =
|
||
h < 60 ? [c, x, 0] :
|
||
h < 120 ? [x, c, 0] :
|
||
h < 180 ? [0, c, x] :
|
||
h < 240 ? [0, x, c] :
|
||
h < 300 ? [x, 0, c] : [c, 0, x];
|
||
return {
|
||
r: Math.round((r + m0) * 255),
|
||
g: Math.round((g + m0) * 255),
|
||
b: Math.round((b + m0) * 255),
|
||
a: 1,
|
||
};
|
||
}
|
||
|
||
function hwbToRgb(h, w, bl) {
|
||
if (w + bl >= 1) {
|
||
const g = Math.round((w / (w + bl)) * 255);
|
||
return { r: g, g, b: g, a: 1 };
|
||
}
|
||
const base = hslToRgb(h, 1, 0.5);
|
||
const mix = (c) => Math.round(((c / 255) * (1 - w - bl) + w) * 255);
|
||
return { r: mix(base.r), g: mix(base.g), b: mix(base.b), a: 1 };
|
||
}
|
||
|
||
// Common CSS named colors — the handful that actually show up in generated
|
||
// UIs, not the full 148-name spec list. Includes the achromatic names so a
|
||
// named gray parses (and correctly reads as no-chroma) instead of being
|
||
// treated as an unknown color.
|
||
const CSS_NAMED_COLORS = {
|
||
black: { r: 0, g: 0, b: 0 },
|
||
white: { r: 255, g: 255, b: 255 },
|
||
gray: { r: 128, g: 128, b: 128 },
|
||
grey: { r: 128, g: 128, b: 128 },
|
||
silver: { r: 192, g: 192, b: 192 },
|
||
dimgray: { r: 105, g: 105, b: 105 },
|
||
darkgray: { r: 169, g: 169, b: 169 },
|
||
lightgray: { r: 211, g: 211, b: 211 },
|
||
gainsboro: { r: 220, g: 220, b: 220 },
|
||
whitesmoke: { r: 245, g: 245, b: 245 },
|
||
red: { r: 255, g: 0, b: 0 },
|
||
crimson: { r: 220, g: 20, b: 60 },
|
||
tomato: { r: 255, g: 99, b: 71 },
|
||
coral: { r: 255, g: 127, b: 80 },
|
||
salmon: { r: 250, g: 128, b: 114 },
|
||
orange: { r: 255, g: 165, b: 0 },
|
||
gold: { r: 255, g: 215, b: 0 },
|
||
yellow: { r: 255, g: 255, b: 0 },
|
||
olive: { r: 128, g: 128, b: 0 },
|
||
lime: { r: 0, g: 255, b: 0 },
|
||
green: { r: 0, g: 128, b: 0 },
|
||
teal: { r: 0, g: 128, b: 128 },
|
||
turquoise: { r: 64, g: 224, b: 208 },
|
||
cyan: { r: 0, g: 255, b: 255 },
|
||
aqua: { r: 0, g: 255, b: 255 },
|
||
skyblue: { r: 135, g: 206, b: 235 },
|
||
dodgerblue: { r: 30, g: 144, b: 255 },
|
||
blue: { r: 0, g: 0, b: 255 },
|
||
navy: { r: 0, g: 0, b: 128 },
|
||
indigo: { r: 75, g: 0, b: 130 },
|
||
rebeccapurple: { r: 102, g: 51, b: 153 },
|
||
purple: { r: 128, g: 0, b: 128 },
|
||
violet: { r: 238, g: 130, b: 238 },
|
||
orchid: { r: 218, g: 112, b: 214 },
|
||
magenta: { r: 255, g: 0, b: 255 },
|
||
fuchsia: { r: 255, g: 0, b: 255 },
|
||
hotpink: { r: 255, g: 105, b: 180 },
|
||
pink: { r: 255, g: 192, b: 203 },
|
||
maroon: { r: 128, g: 0, b: 0 },
|
||
};
|
||
|
||
// Split a string on top-level commas (ignoring commas nested in parens).
|
||
function splitTopLevelCommas(str) {
|
||
const parts = [];
|
||
let depth = 0, start = 0;
|
||
for (let i = 0; i < str.length; i++) {
|
||
const ch = str[i];
|
||
if (ch === '(') depth++;
|
||
else if (ch === ')') depth = Math.max(0, depth - 1);
|
||
else if (ch === ',' && depth === 0) {
|
||
parts.push(str.slice(start, i).trim());
|
||
start = i + 1;
|
||
}
|
||
}
|
||
const tail = str.slice(start).trim();
|
||
if (tail) parts.push(tail);
|
||
return parts;
|
||
}
|
||
|
||
// Evaluate a CSS color-mix() expression to {r,g,b,a}. Returns null when
|
||
// the expression can't be resolved (unresolved var(), unknown colors).
|
||
//
|
||
// Mixing is done with premultiplied alpha in sRGB regardless of the
|
||
// declared interpolation space. That is exact for the dominant generated-UI
|
||
// pattern — `color-mix(in oklab, <color> N%, transparent)` — where the
|
||
// result is simply <color> at alpha N% in ANY rectangular space, and a
|
||
// close-enough approximation for opaque-opaque mixes (the detector only
|
||
// consumes these values for contrast/chroma thresholds, not for display).
|
||
function parseColorMix(str) {
|
||
const m = String(str).trim().match(/^color-mix\(/i);
|
||
if (!m) return null;
|
||
// Balanced-paren capture of the arguments.
|
||
let depth = 0, end = -1;
|
||
const open = str.indexOf('(');
|
||
for (let i = open; i < str.length; i++) {
|
||
if (str[i] === '(') depth++;
|
||
else if (str[i] === ')') { depth--; if (depth === 0) { end = i; break; } }
|
||
}
|
||
if (end < 0) return null;
|
||
const args = splitTopLevelCommas(str.slice(open + 1, end));
|
||
if (args.length !== 3 || !/^in\s/i.test(args[0])) return null;
|
||
|
||
const parseComponent = (component) => {
|
||
// Percentage may lead or trail the color per spec.
|
||
let pct = null;
|
||
let colorStr = component;
|
||
const trail = component.match(/\s+([\d.]+)%$/);
|
||
const lead = component.match(/^([\d.]+)%\s+/);
|
||
if (trail) { pct = parseFloat(trail[1]); colorStr = component.slice(0, trail.index).trim(); }
|
||
else if (lead) { pct = parseFloat(lead[1]); colorStr = component.slice(lead[0].length).trim(); }
|
||
let color;
|
||
if (/^transparent$/i.test(colorStr)) color = { r: 0, g: 0, b: 0, a: 0 };
|
||
else color = parseAnyColor(colorStr);
|
||
if (!color) return null;
|
||
return { color, pct };
|
||
};
|
||
|
||
const c1 = parseComponent(args[1]);
|
||
const c2 = parseComponent(args[2]);
|
||
if (!c1 || !c2) return null;
|
||
let p1 = c1.pct, p2 = c2.pct;
|
||
if (p1 == null && p2 == null) { p1 = 50; p2 = 50; }
|
||
else if (p1 == null) p1 = 100 - p2;
|
||
else if (p2 == null) p2 = 100 - p1;
|
||
const sum = p1 + p2;
|
||
if (sum <= 0) return null;
|
||
// Per spec: weights normalize to sum; when sum < 100 the result alpha is
|
||
// additionally scaled by sum/100.
|
||
const w1 = p1 / sum, w2 = p2 / sum;
|
||
const alphaScale = sum < 100 ? sum / 100 : 1;
|
||
const a1 = c1.color.a ?? 1, a2 = c2.color.a ?? 1;
|
||
const a = (a1 * w1 + a2 * w2) * alphaScale;
|
||
if (a <= 0) return { r: 0, g: 0, b: 0, a: 0 };
|
||
const mix = (ch) => Math.round((c1.color[ch] * a1 * w1 + c2.color[ch] * a2 * w2) / (a1 * w1 + a2 * w2));
|
||
return { r: mix('r'), g: mix('g'), b: mix('b'), a: Math.min(1, a) };
|
||
}
|
||
|
||
// Composite a translucent color over an opaque(ish) base (simple
|
||
// source-over in sRGB). Returns an opaque {r,g,b,a:1}.
|
||
function compositeColorOver(top, base) {
|
||
const a = top.a ?? 1;
|
||
return {
|
||
r: Math.round(top.r * a + base.r * (1 - a)),
|
||
g: Math.round(top.g * a + base.g * (1 - a)),
|
||
b: Math.round(top.b * a + base.b * (1 - a)),
|
||
a: 1,
|
||
};
|
||
}
|
||
|
||
// Extended color parser: rgb/rgba/hex/oklch/oklab/hsl/hwb/color-mix/common
|
||
// named colors. Returns null on no match. Use this when the input might be
|
||
// any CSS color form; use plain parseRgb when you only expect computed rgb()
|
||
// values from real browsers.
|
||
function parseAnyColor(s) {
|
||
if (!s || typeof s !== 'string') return null;
|
||
const str = s.trim();
|
||
if (str === 'transparent' || str === 'currentcolor' || str === 'inherit') return null;
|
||
if (/^color-mix\(/i.test(str)) return parseColorMix(str);
|
||
let m;
|
||
m = str.match(/rgba?\(\s*(\d+(?:\.\d+)?)\s*,?\s*(\d+(?:\.\d+)?)\s*,?\s*(\d+(?:\.\d+)?)(?:\s*[,/]\s*([\d.]+))?\s*\)/);
|
||
if (m) return { r: Math.round(+m[1]), g: Math.round(+m[2]), b: Math.round(+m[3]), a: m[4] !== undefined ? +m[4] : 1 };
|
||
m = str.match(/^#([0-9a-f]{3,8})$/i);
|
||
if (m) {
|
||
const h = m[1];
|
||
if (h.length === 3 || h.length === 4) {
|
||
return {
|
||
r: parseInt(h[0] + h[0], 16),
|
||
g: parseInt(h[1] + h[1], 16),
|
||
b: parseInt(h[2] + h[2], 16),
|
||
a: h.length === 4 ? parseInt(h[3] + h[3], 16) / 255 : 1,
|
||
};
|
||
}
|
||
if (h.length === 6 || h.length === 8) {
|
||
return {
|
||
r: parseInt(h.slice(0, 2), 16),
|
||
g: parseInt(h.slice(2, 4), 16),
|
||
b: parseInt(h.slice(4, 6), 16),
|
||
a: h.length === 8 ? parseInt(h.slice(6, 8), 16) / 255 : 1,
|
||
};
|
||
}
|
||
}
|
||
// OKLCH parser. Tailwind v4's CSS minifier squishes the space after
|
||
// `%` ("21.5%.02 50"), so the separator between L and C may be absent.
|
||
// Match L (with optional %), then C and H separated permissively.
|
||
m = str.match(/oklch\(\s*([\d.]+)(%?)\s*[\s,]*\s*([\d.]+)\s*[\s,]+\s*([-\d.]+)(?:deg)?(?:\s*\/\s*([\d.]+)(%)?)?\s*\)/i);
|
||
if (m) {
|
||
const Lnum = parseFloat(m[1]);
|
||
const L = m[2] === '%' ? Lnum / 100 : Lnum;
|
||
const rgb = oklchToRgb(L, parseFloat(m[3]), parseFloat(m[4]));
|
||
if (m[5] !== undefined) {
|
||
const alpha = parseFloat(m[5]);
|
||
rgb.a = m[6] === '%' ? alpha / 100 : alpha;
|
||
}
|
||
return rgb;
|
||
}
|
||
// OKLAB — a/b are signed axes; percentages map 100% → 0.4.
|
||
m = str.match(/oklab\(\s*([\d.]+)(%?)\s+(-?[\d.]+)(%?)\s+(-?[\d.]+)(%?)(?:\s*\/\s*([\d.]+)(%)?)?\s*\)/i);
|
||
if (m) {
|
||
const L = m[2] === '%' ? parseFloat(m[1]) / 100 : parseFloat(m[1]);
|
||
const a = m[4] === '%' ? parseFloat(m[3]) * 0.004 : parseFloat(m[3]);
|
||
const b = m[6] === '%' ? parseFloat(m[5]) * 0.004 : parseFloat(m[5]);
|
||
const rgb = oklabToRgb(L, a, b);
|
||
if (m[7] !== undefined) {
|
||
const alpha = parseFloat(m[7]);
|
||
rgb.a = m[8] === '%' ? alpha / 100 : alpha;
|
||
}
|
||
return rgb;
|
||
}
|
||
// HSL/HSLA — comma or space syntax, optional deg on hue.
|
||
m = str.match(/hsla?\(\s*(-?[\d.]+)(?:deg)?\s*[,\s]\s*([\d.]+)%\s*[,\s]\s*([\d.]+)%(?:\s*[,/]\s*([\d.]+)(%)?)?\s*\)/i);
|
||
if (m) {
|
||
const rgb = hslToRgb(parseFloat(m[1]), parseFloat(m[2]) / 100, parseFloat(m[3]) / 100);
|
||
if (m[4] !== undefined) {
|
||
const alpha = parseFloat(m[4]);
|
||
rgb.a = m[5] === '%' ? alpha / 100 : alpha;
|
||
}
|
||
return rgb;
|
||
}
|
||
// HWB — hue whiteness% blackness%.
|
||
m = str.match(/hwb\(\s*(-?[\d.]+)(?:deg)?\s+([\d.]+)%\s+([\d.]+)%(?:\s*\/\s*([\d.]+)(%)?)?\s*\)/i);
|
||
if (m) {
|
||
const rgb = hwbToRgb(parseFloat(m[1]), parseFloat(m[2]) / 100, parseFloat(m[3]) / 100);
|
||
if (m[4] !== undefined) {
|
||
const alpha = parseFloat(m[4]);
|
||
rgb.a = m[5] === '%' ? alpha / 100 : alpha;
|
||
}
|
||
return rgb;
|
||
}
|
||
const named = CSS_NAMED_COLORS[str.toLowerCase()];
|
||
if (named) return { ...named, a: 1 };
|
||
return null;
|
||
}
|
||
|
||
// Resolve var() refs in a color string (via customPropMap), then parse.
|
||
// Returns null on any failure. Used in jsdom-mode paths where
|
||
// getComputedStyle returns literal "var(--X)" or "oklch(...)" strings.
|
||
function parseColorResolved(str, customPropMap) {
|
||
if (!str) return null;
|
||
const resolved = customPropMap ? resolveVarRefs(str, customPropMap) : str;
|
||
return parseAnyColor(resolved);
|
||
}
|
||
|
||
const REPEATED_KICKER_SKIP_SELECTOR = [
|
||
'nav',
|
||
'form',
|
||
'table',
|
||
'thead',
|
||
'tbody',
|
||
'tfoot',
|
||
'figure',
|
||
'figcaption',
|
||
'ol',
|
||
'ul',
|
||
'li',
|
||
'[role="navigation"]',
|
||
'[aria-label*="breadcrumb" i]',
|
||
'[class*="breadcrumb" i]',
|
||
'[aria-hidden="true"]',
|
||
'[data-impeccable-allow-kickers]',
|
||
].join(',');
|
||
|
||
const REPEATED_KICKER_CARD_CONTEXT_SELECTOR = [
|
||
'article',
|
||
'button',
|
||
'a',
|
||
'li',
|
||
'[role="listitem"]',
|
||
'[role="option"]',
|
||
].join(',');
|
||
|
||
function cleanInlineText(el) {
|
||
return [...el.childNodes]
|
||
.filter(n => n.nodeType === 3)
|
||
.map(n => n.textContent)
|
||
.join(' ')
|
||
.replace(/\s+/g, ' ')
|
||
.trim();
|
||
}
|
||
|
||
function isRepeatedKickerCardContext(heading, kicker) {
|
||
const item = heading.closest?.(REPEATED_KICKER_CARD_CONTEXT_SELECTOR);
|
||
return Boolean(item && (!item.contains || item.contains(kicker)));
|
||
}
|
||
|
||
function isRepeatedKickerCandidate(opts) {
|
||
const {
|
||
headingTag,
|
||
headingText,
|
||
headingFontSize,
|
||
kickerTag,
|
||
kickerText,
|
||
kickerTextTransform,
|
||
kickerFontSize,
|
||
kickerLetterSpacing,
|
||
} = opts;
|
||
if (!['h2', 'h3', 'h4'].includes(headingTag)) return false;
|
||
if (!headingText || headingText.length < 3) return false;
|
||
if (/^\/[\w-]+/i.test(headingText.replace(/^"|"$/g, '').trim())) return false;
|
||
if (!(headingFontSize >= 20)) return false;
|
||
if (!kickerTag || HEADING_TAGS.has(kickerTag)) return false;
|
||
if (!['p', 'span', 'div', 'small'].includes(kickerTag)) return false;
|
||
if (!kickerText || kickerText.length < 2 || kickerText.length > 34) return false;
|
||
if (/^step\s*\d+/i.test(kickerText) || /^\d{1,2}$/.test(kickerText)) return false;
|
||
|
||
const isUppercased = kickerTextTransform === 'uppercase'
|
||
|| (/[A-Z]/.test(kickerText) && !/[a-z]/.test(kickerText));
|
||
if (!isUppercased) return false;
|
||
if (!(kickerFontSize > 0 && kickerFontSize <= 14)) return false;
|
||
const minTrackedSpacing = Math.max(1, kickerFontSize * 0.08);
|
||
if (!(kickerLetterSpacing >= minTrackedSpacing)) return false;
|
||
return true;
|
||
}
|
||
|
||
function collectRepeatedSectionKickerCandidates(doc, getStyle, resolveLetterSpacing) {
|
||
const candidates = [];
|
||
for (const heading of doc.querySelectorAll('h2, h3, h4')) {
|
||
if (heading.closest?.(REPEATED_KICKER_SKIP_SELECTOR)) continue;
|
||
const kicker = heading.previousElementSibling;
|
||
if (!kicker || kicker.closest?.(REPEATED_KICKER_SKIP_SELECTOR)) continue;
|
||
if (isRepeatedKickerCardContext(heading, kicker)) continue;
|
||
|
||
const headingStyle = getStyle(heading);
|
||
const kickerStyle = getStyle(kicker);
|
||
const headingText = (heading.textContent || '').replace(/\s+/g, ' ').trim();
|
||
const kickerText = cleanInlineText(kicker) || (kicker.textContent || '').replace(/\s+/g, ' ').trim();
|
||
const headingFontSize = resolveLetterSpacing(headingStyle.fontSize || '', 16) || parseFloat(headingStyle.fontSize) || 0;
|
||
const kickerFontSize = resolveLetterSpacing(kickerStyle.fontSize || '', 16) || parseFloat(kickerStyle.fontSize) || 0;
|
||
const kickerLetterSpacing = resolveLetterSpacing(kickerStyle.letterSpacing || '', kickerFontSize);
|
||
|
||
if (!isRepeatedKickerCandidate({
|
||
headingTag: heading.tagName.toLowerCase(),
|
||
headingText,
|
||
headingFontSize,
|
||
kickerTag: kicker.tagName.toLowerCase(),
|
||
kickerText,
|
||
kickerTextTransform: kickerStyle.textTransform || '',
|
||
kickerFontSize,
|
||
kickerLetterSpacing,
|
||
})) {
|
||
continue;
|
||
}
|
||
|
||
candidates.push({
|
||
headingTag: heading.tagName.toLowerCase(),
|
||
headingText: headingText.replace(/^"|"$/g, '').slice(0, 60),
|
||
kickerText: kickerText.slice(0, 40),
|
||
});
|
||
}
|
||
return candidates;
|
||
}
|
||
|
||
function checkRepeatedSectionKickersDOM() {
|
||
const candidates = collectRepeatedSectionKickerCandidates(
|
||
document,
|
||
(el) => getComputedStyle(el),
|
||
(value, fontSize) => resolveLengthPx(value, fontSize) || 0,
|
||
);
|
||
return checkRepeatedSectionKickers({ candidates });
|
||
}
|
||
|
||
function checkElementMotionDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (SAFE_TAGS.has(tag)) return [];
|
||
const style = getComputedStyle(el);
|
||
return checkMotion({
|
||
tag,
|
||
transitionProperty: style.transitionProperty || '',
|
||
animationName: style.animationName || '',
|
||
timingFunctions: [style.animationTimingFunction, style.transitionTimingFunction].filter(Boolean).join(' '),
|
||
classList: el.getAttribute('class') || '',
|
||
});
|
||
}
|
||
|
||
function checkElementGlowDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
const style = getComputedStyle(el);
|
||
const boxShadow = style.boxShadow && style.boxShadow !== 'none' ? style.boxShadow : '';
|
||
// text-shadow inherits: only check the element that introduces it, so one
|
||
// declaration doesn't produce a finding on every descendant.
|
||
let textShadow = style.textShadow && style.textShadow !== 'none' ? style.textShadow : '';
|
||
if (textShadow && el.parentElement && getComputedStyle(el.parentElement).textShadow === textShadow) {
|
||
textShadow = '';
|
||
}
|
||
if (!boxShadow && !textShadow) return [];
|
||
// Use parent's background — glow radiates outward, so the surrounding context matters
|
||
// If resolveBackground returns null (gradient), try to infer from the gradient colors
|
||
let parentBg = el.parentElement ? resolveBackground(el.parentElement) : resolveBackground(el);
|
||
if (!parentBg) {
|
||
// Gradient background — sample its colors to determine if it's dark
|
||
let cur = el.parentElement;
|
||
while (cur && cur.nodeType === 1) {
|
||
const bgImage = getComputedStyle(cur).backgroundImage || '';
|
||
const gradColors = parseGradientColors(bgImage);
|
||
if (gradColors.length > 0) {
|
||
// Average the gradient colors
|
||
const avg = { r: 0, g: 0, b: 0 };
|
||
for (const c of gradColors) { avg.r += c.r; avg.g += c.g; avg.b += c.b; }
|
||
avg.r = Math.round(avg.r / gradColors.length);
|
||
avg.g = Math.round(avg.g / gradColors.length);
|
||
avg.b = Math.round(avg.b / gradColors.length);
|
||
parentBg = avg;
|
||
break;
|
||
}
|
||
cur = cur.parentElement;
|
||
}
|
||
}
|
||
return checkGlow({ tag, boxShadow, textShadow, effectiveBg: parentBg });
|
||
}
|
||
|
||
function checkElementAIPaletteDOM(el) {
|
||
const style = getComputedStyle(el);
|
||
const findings = [];
|
||
|
||
// Check gradient backgrounds for purple/violet or cyan
|
||
const bgImage = style.backgroundImage || '';
|
||
const gradColors = parseGradientColors(bgImage);
|
||
for (const c of gradColors) {
|
||
if (hasChroma(c, 50)) {
|
||
const hue = getHue(c);
|
||
if (hue >= 260 && hue <= 310) {
|
||
findings.push({ id: 'ai-color-palette', snippet: 'Purple/violet gradient background' });
|
||
break;
|
||
}
|
||
if (hue >= 160 && hue <= 200) {
|
||
findings.push({ id: 'ai-color-palette', snippet: 'Cyan gradient background' });
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
// Check for neon text (vivid cyan/purple color on dark background)
|
||
const textColor = parseRgb(style.color);
|
||
if (textColor && hasChroma(textColor, 80)) {
|
||
const hue = getHue(textColor);
|
||
const isAIPalette = (hue >= 160 && hue <= 200) || (hue >= 260 && hue <= 310);
|
||
if (isAIPalette) {
|
||
const parentBg = el.parentElement ? resolveBackground(el.parentElement) : null;
|
||
// Also check gradient parents
|
||
let effectiveBg = parentBg;
|
||
if (!effectiveBg) {
|
||
let cur = el.parentElement;
|
||
while (cur && cur.nodeType === 1) {
|
||
const gi = getComputedStyle(cur).backgroundImage || '';
|
||
const gc = parseGradientColors(gi);
|
||
if (gc.length > 0) {
|
||
const avg = { r: 0, g: 0, b: 0 };
|
||
for (const c of gc) { avg.r += c.r; avg.g += c.g; avg.b += c.b; }
|
||
avg.r = Math.round(avg.r / gc.length);
|
||
avg.g = Math.round(avg.g / gc.length);
|
||
avg.b = Math.round(avg.b / gc.length);
|
||
effectiveBg = avg;
|
||
break;
|
||
}
|
||
cur = cur.parentElement;
|
||
}
|
||
}
|
||
if (effectiveBg && relativeLuminance(effectiveBg) < 0.1) {
|
||
const label = hue >= 260 ? 'Purple/violet' : 'Cyan';
|
||
findings.push({ id: 'ai-color-palette', snippet: `${label} neon text on dark background` });
|
||
}
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
const QUALITY_TEXT_TAGS = new Set(['p', 'li', 'td', 'th', 'dd', 'blockquote', 'figcaption']);
|
||
|
||
// Resolve a CSS font-size value to pixels by walking up the parent chain.
|
||
// Browsers resolve em/rem/% to px in getComputedStyle, but jsdom returns the
|
||
// specified value verbatim — so for the Node path we walk parents ourselves.
|
||
function resolveFontSizePx(el, win) {
|
||
const chain = []; // raw font-size strings, leaf → root
|
||
let cur = el;
|
||
while (cur && cur.nodeType === 1) {
|
||
const fs = (win ? win.getComputedStyle(cur) : getComputedStyle(cur)).fontSize;
|
||
chain.push(fs || '');
|
||
cur = cur.parentElement;
|
||
}
|
||
// Walk root → leaf, resolving each value relative to its parent context.
|
||
let px = 16; // root default
|
||
for (let i = chain.length - 1; i >= 0; i--) {
|
||
const v = chain[i];
|
||
if (!v || v === 'inherit') continue;
|
||
const num = parseFloat(v);
|
||
if (isNaN(num)) continue;
|
||
if (v.endsWith('px')) px = num;
|
||
else if (v.endsWith('rem')) px = num * 16;
|
||
else if (v.endsWith('em')) px = num * px;
|
||
else if (v.endsWith('%')) px = (num / 100) * px;
|
||
else px = num; // unitless — already resolved
|
||
}
|
||
return px;
|
||
}
|
||
|
||
// Resolve a CSS length value (line-height, letter-spacing, etc.) given a
|
||
// known font-size context. Returns null for "normal" / unparseable values.
|
||
function resolveLengthPx(value, fontSizePx) {
|
||
if (!value || value === 'normal' || value === 'auto' || value === 'inherit') return null;
|
||
const num = parseFloat(value);
|
||
if (isNaN(num)) return null;
|
||
if (value.endsWith('px')) return num;
|
||
if (value.endsWith('rem')) return num * 16;
|
||
if (value.endsWith('em')) return num * fontSizePx;
|
||
if (value.endsWith('%')) return (num / 100) * fontSizePx;
|
||
// Unitless line-height = multiplier, return px equivalent
|
||
return num * fontSizePx;
|
||
}
|
||
|
||
function cssColorIsTransparent(value) {
|
||
if (!value) return true;
|
||
const str = String(value).trim().toLowerCase();
|
||
if (!str || str === 'transparent' || str === 'rgba(0, 0, 0, 0)') return true;
|
||
const parsed = parseAnyColor(str);
|
||
if (parsed) return (parsed.a ?? 1) <= 0.05;
|
||
return /^rgba\(\s*\d+\s*,\s*\d+\s*,\s*\d+\s*,\s*0(?:\.0+)?\s*\)$/.test(str);
|
||
}
|
||
|
||
function colorsNearlyMatch(a, b) {
|
||
const ca = parseAnyColor(a);
|
||
const cb = parseAnyColor(b);
|
||
if (!ca || !cb) return false;
|
||
const alphaDelta = Math.abs((ca.a ?? 1) - (cb.a ?? 1));
|
||
const channelDelta = Math.max(
|
||
Math.abs(ca.r - cb.r),
|
||
Math.abs(ca.g - cb.g),
|
||
Math.abs(ca.b - cb.b),
|
||
);
|
||
return alphaDelta <= 0.03 && channelDelta <= 3;
|
||
}
|
||
|
||
function getComputedStyleFor(win, el) {
|
||
if (win && typeof win.getComputedStyle === 'function') {
|
||
try { return win.getComputedStyle(el); } catch {}
|
||
}
|
||
if (typeof getComputedStyle === 'function') {
|
||
try { return getComputedStyle(el); } catch {}
|
||
}
|
||
return null;
|
||
}
|
||
|
||
function hasVisibleBackgroundBoundary(style, el, win) {
|
||
const bg = style?.backgroundColor || '';
|
||
if (cssColorIsTransparent(bg)) return false;
|
||
|
||
let parent = el?.parentElement || null;
|
||
while (parent) {
|
||
const parentStyle = getComputedStyleFor(win, parent);
|
||
const parentBg = parentStyle?.backgroundColor || '';
|
||
if (!cssColorIsTransparent(parentBg)) {
|
||
return !colorsNearlyMatch(bg, parentBg);
|
||
}
|
||
parent = parent.parentElement;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
const TEXT_EDGE_TAGS = new Set(['A', 'BUTTON', 'CODE', 'DD', 'DT', 'FIGCAPTION', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'LI', 'P', 'PRE', 'SPAN', 'TD', 'TH']);
|
||
|
||
function hasMeaningfulDirectText(node) {
|
||
if (!node?.childNodes) return false;
|
||
for (const child of node.childNodes) {
|
||
if (child.nodeType === 3 && child.textContent.trim().length > 4) return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function textDescendantsFlushSides(el, rect) {
|
||
const flush = { top: false, right: false, bottom: false, left: false };
|
||
if (!rect || !el?.querySelectorAll) return flush;
|
||
const TEXT_EDGE_THRESHOLD = 4;
|
||
const candidates = el.querySelectorAll('a, button, code, dd, dt, figcaption, h1, h2, h3, h4, h5, h6, li, p, pre, span, td, th');
|
||
for (const node of candidates) {
|
||
if (!TEXT_EDGE_TAGS.has(node.tagName) || !hasMeaningfulDirectText(node)) continue;
|
||
let nodeRect = null;
|
||
try { nodeRect = node.getBoundingClientRect(); } catch {}
|
||
if (!nodeRect || nodeRect.width <= 0 || nodeRect.height <= 0) continue;
|
||
if (nodeRect.bottom < rect.top || nodeRect.top > rect.bottom || nodeRect.right < rect.left || nodeRect.left > rect.right) continue;
|
||
if (nodeRect.top - rect.top <= TEXT_EDGE_THRESHOLD) flush.top = true;
|
||
if (rect.right - nodeRect.right <= TEXT_EDGE_THRESHOLD) flush.right = true;
|
||
if (rect.bottom - nodeRect.bottom <= TEXT_EDGE_THRESHOLD) flush.bottom = true;
|
||
if (nodeRect.left - rect.left <= TEXT_EDGE_THRESHOLD) flush.left = true;
|
||
}
|
||
return flush;
|
||
}
|
||
|
||
// Pure quality checks. Most run on computed CSS and DOM-only inputs (work in
|
||
// jsdom and the browser). Two checks (line-length, cramped-padding) gate on
|
||
// element rect dimensions, which jsdom can't compute — pass `rect: null` from
|
||
// the Node adapter to skip those.
|
||
//
|
||
// Both adapters resolve font-size, line-height and letter-spacing to pixels
|
||
// before calling this so the pure function only deals with numbers.
|
||
function checkQuality(opts) {
|
||
const { el, tag, style, hasDirectText, textLen, fontSize, lineHeightPx, letterSpacingPx, rect, lineMax = 80, viewportWidth = 0, win = null } = opts;
|
||
const findings = [];
|
||
// Skip browser extension injected elements
|
||
const elId = el.id || '';
|
||
if (elId.startsWith('claude-') || elId.startsWith('cic-')) return findings;
|
||
|
||
// --- Line length too long --- (browser-only: needs rect.width)
|
||
if (rect && hasDirectText && QUALITY_TEXT_TAGS.has(tag) && rect.width > 0 && textLen > lineMax) {
|
||
const charsPerLine = rect.width / (fontSize * 0.5);
|
||
if (charsPerLine > lineMax + 5) {
|
||
findings.push({ id: 'line-length', snippet: `~${Math.round(charsPerLine)} chars/line (aim for <${lineMax})` });
|
||
}
|
||
}
|
||
|
||
// --- Cramped padding --- (browser-only: needs rect to skip small badges/labels)
|
||
// Vertical and horizontal thresholds are independent because line-height
|
||
// already provides built-in vertical breathing room (the line box is taller
|
||
// than the cap height), but horizontal has no equivalent. Both scale with
|
||
// font-size — bigger text demands proportionally more padding.
|
||
// vertical: max(4px, fontSize × 0.3)
|
||
// horizontal: max(8px, fontSize × 0.5)
|
||
const isInlineCode = tag === 'code' && !(el.closest && el.closest('pre'));
|
||
if (!isInlineCode && rect && hasDirectText && textLen > 20 && rect.width > 100 && rect.height > 30) {
|
||
const borders = {
|
||
top: parseFloat(style.borderTopWidth) || 0,
|
||
right: parseFloat(style.borderRightWidth) || 0,
|
||
bottom: parseFloat(style.borderBottomWidth) || 0,
|
||
left: parseFloat(style.borderLeftWidth) || 0,
|
||
};
|
||
const borderCount = Object.values(borders).filter(w => w > 0).length;
|
||
const hasBg = hasVisibleBackgroundBoundary(style, el, win);
|
||
if (borderCount >= 2 || hasBg) {
|
||
const vPads = [], hPads = [];
|
||
if (hasBg || borders.top > 0) vPads.push(parseFloat(style.paddingTop) || 0);
|
||
if (hasBg || borders.bottom > 0) vPads.push(parseFloat(style.paddingBottom) || 0);
|
||
if (hasBg || borders.left > 0) hPads.push(parseFloat(style.paddingLeft) || 0);
|
||
if (hasBg || borders.right > 0) hPads.push(parseFloat(style.paddingRight) || 0);
|
||
|
||
const vMin = vPads.length ? Math.min(...vPads) : Infinity;
|
||
const hMin = hPads.length ? Math.min(...hPads) : Infinity;
|
||
const vThresh = Math.max(4, fontSize * 0.3);
|
||
const hThresh = Math.max(8, fontSize * 0.5);
|
||
|
||
// Emit at most one finding per element — pick whichever axis is worse.
|
||
if (vMin < vThresh) {
|
||
findings.push({ id: 'cramped-padding', snippet: `${vMin}px vertical padding (need ≥${vThresh.toFixed(1)}px for ${fontSize}px text)` });
|
||
} else if (hMin < hThresh) {
|
||
findings.push({ id: 'cramped-padding', snippet: `${hMin}px horizontal padding (need ≥${hThresh.toFixed(1)}px for ${fontSize}px text)` });
|
||
}
|
||
}
|
||
}
|
||
|
||
// --- Flush against a visible boundary ---
|
||
// Fires when a container has a visible boundary (border, outline, OR a
|
||
// non-transparent background) AND near-zero padding on the bounded
|
||
// side(s) AND text-bearing children land flush against the boundary.
|
||
//
|
||
// Distinct from cramped-padding: that rule needs the element itself to
|
||
// have direct text (hasDirectText). This rule targets the OPPOSITE
|
||
// shape — a container with NO direct text, only children — which is
|
||
// exactly what cramped-padding misses (a section wrapping a label +
|
||
// list lands a free pass).
|
||
//
|
||
// The classic shape: agent writes `padding: 28px 0 0` shorthand on a
|
||
// section that also has a border, zeroing horizontal padding so the
|
||
// text-bearing children touch the side borders. Background and
|
||
// outline count too: a colored card with zero padding has the same
|
||
// visual failure mode.
|
||
{
|
||
const FLUSH_SKIP_TAGS = new Set(['HTML', 'BODY', 'MAIN', 'HEADER', 'FOOTER', 'NAV', 'ARTICLE', 'ASIDE', 'BUTTON', 'A', 'LABEL', 'SUMMARY', 'CODE', 'PRE', 'INPUT', 'TEXTAREA', 'SELECT', 'FORM', 'FIGURE', 'TABLE', 'TBODY', 'THEAD', 'TR', 'TD', 'TH']);
|
||
const upperTag = tag ? tag.toUpperCase() : '';
|
||
const elPosition = style.position || '';
|
||
if (
|
||
!FLUSH_SKIP_TAGS.has(upperTag) &&
|
||
!hasDirectText &&
|
||
!['fixed', 'absolute'].includes(elPosition) &&
|
||
el.children && el.children.length > 0
|
||
) {
|
||
const borderW = {
|
||
top: parseFloat(style.borderTopWidth) || 0,
|
||
right: parseFloat(style.borderRightWidth) || 0,
|
||
bottom: parseFloat(style.borderBottomWidth) || 0,
|
||
left: parseFloat(style.borderLeftWidth) || 0,
|
||
};
|
||
const borderVisible = {
|
||
top: borderW.top > 0 && !cssColorIsTransparent(style.borderTopColor),
|
||
right: borderW.right > 0 && !cssColorIsTransparent(style.borderRightColor),
|
||
bottom: borderW.bottom > 0 && !cssColorIsTransparent(style.borderBottomColor),
|
||
left: borderW.left > 0 && !cssColorIsTransparent(style.borderLeftColor),
|
||
};
|
||
// Outline detection. jsdom decomposes `border` shorthand into
|
||
// border{Top,…}Width/Color but does NOT decompose `outline` —
|
||
// the longhands come back empty when the value was set via the
|
||
// shorthand. Fall back to parsing `style.outline` ourselves.
|
||
let outlineW = parseFloat(style.outlineWidth) || 0;
|
||
let outlineStyleVal = style.outlineStyle || '';
|
||
let outlineColorVal = style.outlineColor || '';
|
||
if (!outlineW && style.outline) {
|
||
const wMatch = style.outline.match(/(\d+(?:\.\d+)?)\s*px/);
|
||
if (wMatch) outlineW = parseFloat(wMatch[1]) || 0;
|
||
if (!outlineStyleVal) {
|
||
outlineStyleVal = /\b(solid|dashed|dotted|double|groove|ridge|inset|outset)\b/.test(style.outline) ? 'solid' : '';
|
||
}
|
||
if (!outlineColorVal) {
|
||
const cMatch = style.outline.match(/(rgba?\([^)]+\)|#[0-9a-fA-F]{3,8}|[a-zA-Z]+)\s*$/);
|
||
if (cMatch) outlineColorVal = cMatch[1];
|
||
}
|
||
}
|
||
const outlineVisible = outlineW > 0 && !cssColorIsTransparent(outlineColorVal) && outlineStyleVal && outlineStyleVal !== 'none';
|
||
const bgVisible = hasVisibleBackgroundBoundary(style, el, win);
|
||
|
||
const anyVisible = borderVisible.top || borderVisible.right || borderVisible.bottom || borderVisible.left || outlineVisible || bgVisible;
|
||
if (anyVisible) {
|
||
// Resolve padding to px (jsdom returns raw "1.5rem" etc., not the
|
||
// computed px value; parseFloat would strip the unit and treat
|
||
// 1.5rem as 1.5px, false-flagging legitimate insets).
|
||
const pad = {
|
||
top: resolveLengthPx(style.paddingTop, fontSize) ?? 0,
|
||
right: resolveLengthPx(style.paddingRight, fontSize) ?? 0,
|
||
bottom: resolveLengthPx(style.paddingBottom, fontSize) ?? 0,
|
||
left: resolveLengthPx(style.paddingLeft, fontSize) ?? 0,
|
||
};
|
||
const PAD_THRESHOLD = 2;
|
||
// Children-insulate-this-side: a side is insulated if ANY direct
|
||
// child has its own padding ≥ 4px on that side. Rationale: in
|
||
// typical flow, only the first/last (or leftmost/rightmost)
|
||
// children actually sit at the parent's edges. If even one of
|
||
// them has its own padding, the visual flush is broken on that
|
||
// side. Classic example: a column-flow card frame where the
|
||
// top child (header) has padding-top:12 and the bottom child
|
||
// (footer) has padding-bottom:8 — the parent's padding:0 doesn't
|
||
// matter; nothing is actually flush. The `any-child-insulates`
|
||
// heuristic accepts some false negatives (a card with one heavily
|
||
// padded middle child won't flag) for far fewer false positives.
|
||
const CHILD_INSULATE_THRESHOLD = 4;
|
||
const childrenInsulate = { top: false, right: false, bottom: false, left: false };
|
||
for (const child of el.children) {
|
||
let childStyle = getComputedStyleFor(win, child);
|
||
if (!childStyle) continue;
|
||
const childPad = {
|
||
top: resolveLengthPx(childStyle.paddingTop, fontSize) ?? 0,
|
||
right: resolveLengthPx(childStyle.paddingRight, fontSize) ?? 0,
|
||
bottom: resolveLengthPx(childStyle.paddingBottom, fontSize) ?? 0,
|
||
left: resolveLengthPx(childStyle.paddingLeft, fontSize) ?? 0,
|
||
};
|
||
const childMargin = {
|
||
top: resolveLengthPx(childStyle.marginTop, fontSize) ?? 0,
|
||
right: resolveLengthPx(childStyle.marginRight, fontSize) ?? 0,
|
||
bottom: resolveLengthPx(childStyle.marginBottom, fontSize) ?? 0,
|
||
left: resolveLengthPx(childStyle.marginLeft, fontSize) ?? 0,
|
||
};
|
||
if (rect && typeof child.getBoundingClientRect === 'function') {
|
||
try {
|
||
const childRect = child.getBoundingClientRect();
|
||
if (childRect && childRect.width > 0 && childRect.height > 0) {
|
||
if (childRect.top - rect.top >= CHILD_INSULATE_THRESHOLD) childrenInsulate.top = true;
|
||
if (rect.right - childRect.right >= CHILD_INSULATE_THRESHOLD) childrenInsulate.right = true;
|
||
if (rect.bottom - childRect.bottom >= CHILD_INSULATE_THRESHOLD) childrenInsulate.bottom = true;
|
||
if (childRect.left - rect.left >= CHILD_INSULATE_THRESHOLD) childrenInsulate.left = true;
|
||
}
|
||
} catch {}
|
||
}
|
||
for (const s of ['top', 'right', 'bottom', 'left']) {
|
||
if (childPad[s] >= CHILD_INSULATE_THRESHOLD || childMargin[s] >= CHILD_INSULATE_THRESHOLD) {
|
||
childrenInsulate[s] = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
const textFlush = rect ? textDescendantsFlushSides(el, rect) : null;
|
||
const fullBleedBgBand = rect && viewportWidth > 0 && rect.width >= viewportWidth * 0.94 && bgVisible && !outlineVisible;
|
||
const flushSides = [];
|
||
for (const side of ['top', 'right', 'bottom', 'left']) {
|
||
const bgBoundsSide = bgVisible && !(fullBleedBgBand && (side === 'left' || side === 'right'));
|
||
const sideBounded = borderVisible[side] || outlineVisible || bgBoundsSide;
|
||
if (sideBounded && pad[side] <= PAD_THRESHOLD && !childrenInsulate[side] && (!textFlush || textFlush[side])) {
|
||
flushSides.push(side);
|
||
}
|
||
}
|
||
|
||
if (flushSides.length > 0) {
|
||
// Confirm at least one direct child has substantial text content
|
||
// (> 4 chars). Without this, the flush is harmless: e.g. an
|
||
// image-only card.
|
||
let hasTextChild = false;
|
||
for (const child of el.children) {
|
||
const childText = (child.textContent || '').trim();
|
||
if (childText.length > 4) { hasTextChild = true; break; }
|
||
}
|
||
if (hasTextChild) {
|
||
const cls = (typeof el.className === 'string' && el.className.trim())
|
||
? el.className.trim().split(/\s+/)[0]
|
||
: '';
|
||
const boundaryParts = [];
|
||
const borderSidesVisible = ['top', 'right', 'bottom', 'left'].filter(s => borderVisible[s]);
|
||
if (borderSidesVisible.length === 4) boundaryParts.push('border');
|
||
else if (borderSidesVisible.length > 0) boundaryParts.push(`border-${borderSidesVisible.join('/')}`);
|
||
if (outlineVisible) boundaryParts.push('outline');
|
||
if (bgVisible) boundaryParts.push('bg');
|
||
const sidesLabel = flushSides.length === 4 ? 'all sides' : flushSides.join('/');
|
||
const ident = cls
|
||
? `<${tag.toLowerCase()}> "${cls}"`
|
||
: `<${tag.toLowerCase()}>`;
|
||
findings.push({
|
||
id: 'cramped-padding',
|
||
snippet: `${ident}: children flush against ${boundaryParts.join('+')} on ${sidesLabel} (no inset)`,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// --- Body text touching viewport edge --- (browser-only: needs rect)
|
||
// Catches the failure mode where the agent ships body paragraphs
|
||
// with NO container providing horizontal padding — text bleeds
|
||
// directly to the viewport edge. Different from cramped-padding,
|
||
// which requires a colored/bordered container. Here the failure
|
||
// is the absence of the container entirely.
|
||
//
|
||
// Gate aggressively to avoid false positives:
|
||
// - <p> or <li> only (body content; not headings, not nav, not
|
||
// wrappers)
|
||
// - text > 40 chars (paragraph-like, not a label)
|
||
// - rect.width > 50% of viewport (real body, not a pull-quote)
|
||
// - rect.left < 16 OR rect.right > viewport - 16 (actually
|
||
// touching the edge)
|
||
// - not inside <nav> or <header> (those legitimately bleed)
|
||
// - element itself has no background-color (intentional full-bleed
|
||
// sections set a bg-color and provide their own internal padding)
|
||
if (rect && hasDirectText && textLen > 40 && ['P', 'LI'].includes(tag.toUpperCase()) && viewportWidth > 0) {
|
||
const inNavHeader = el.closest && (el.closest('nav') || el.closest('header'));
|
||
const hasOwnBg = style.backgroundColor && style.backgroundColor !== 'rgba(0, 0, 0, 0)' && style.backgroundColor !== 'transparent';
|
||
const isPositioned = ['fixed', 'absolute'].includes(style.position || '');
|
||
const widthRatio = rect.width / viewportWidth;
|
||
const leftClose = rect.left < 16;
|
||
const rightClose = rect.right > viewportWidth - 16;
|
||
if (!inNavHeader && !hasOwnBg && !isPositioned && widthRatio > 0.5 && (leftClose || rightClose)) {
|
||
const which = leftClose && rightClose
|
||
? `left ${Math.round(rect.left)}px / right ${Math.round(viewportWidth - rect.right)}px`
|
||
: leftClose
|
||
? `left ${Math.round(rect.left)}px`
|
||
: `right ${Math.round(viewportWidth - rect.right)}px`;
|
||
findings.push({ id: 'body-text-viewport-edge', snippet: `<${tag.toLowerCase()}> with ${textLen}-char body bleeds to viewport edge (${which})` });
|
||
}
|
||
}
|
||
|
||
// --- Tight line height ---
|
||
if (hasDirectText && textLen > 50 && !['h1','h2','h3','h4','h5','h6'].includes(tag)) {
|
||
if (lineHeightPx != null && fontSize > 0) {
|
||
const ratio = lineHeightPx / fontSize;
|
||
if (ratio > 0 && ratio < 1.3) {
|
||
findings.push({ id: 'tight-leading', snippet: `line-height ${ratio.toFixed(2)}x (need >=1.3)` });
|
||
}
|
||
}
|
||
}
|
||
|
||
// --- Justified text (without hyphens) ---
|
||
if (hasDirectText && style.textAlign === 'justify') {
|
||
const hyphens = style.hyphens || style.webkitHyphens || '';
|
||
if (hyphens !== 'auto') {
|
||
findings.push({ id: 'justified-text', snippet: 'text-align: justify without hyphens: auto' });
|
||
}
|
||
}
|
||
|
||
// --- Tiny body text ---
|
||
// Only flag actual body content, not UI labels (buttons, tabs, badges, captions, footer text, etc.)
|
||
if (hasDirectText && textLen > 20 && fontSize < 12) {
|
||
const skipTags = ['sub', 'sup', 'code', 'kbd', 'samp', 'var', 'caption', 'figcaption'];
|
||
const inUIContext = el.closest && el.closest('button, a, label, summary, pre, [role="button"], [role="link"], [role="tab"], [role="menuitem"], [role="option"], nav, footer, [aria-hidden="true"], [class*="badge" i], [class*="caption" i], [class*="chip" i], [class*="code" i], [class*="console" i], [class*="diff" i], [class*="label" i], [class*="meta" i], [class*="mock" i], [class*="pill" i], [class*="preview" i], [class*="tag" i], [class*="terminal" i], [class*="writes" i]');
|
||
const isUppercase = style.textTransform === 'uppercase';
|
||
if (!skipTags.includes(tag) && !inUIContext && !isUppercase) {
|
||
findings.push({ id: 'tiny-text', snippet: `${fontSize}px body text` });
|
||
}
|
||
}
|
||
|
||
// --- All-caps body text ---
|
||
if (hasDirectText && textLen > 30 && style.textTransform === 'uppercase') {
|
||
if (!['h1','h2','h3','h4','h5','h6'].includes(tag)) {
|
||
findings.push({ id: 'all-caps-body', snippet: `text-transform: uppercase on ${textLen} chars of body text` });
|
||
}
|
||
}
|
||
|
||
// --- Wide letter spacing on body text ---
|
||
if (hasDirectText && textLen > 20 && style.textTransform !== 'uppercase') {
|
||
if (letterSpacingPx != null && letterSpacingPx > 0 && fontSize > 0) {
|
||
const trackingEm = letterSpacingPx / fontSize;
|
||
if (trackingEm > 0.05) {
|
||
findings.push({ id: 'wide-tracking', snippet: `letter-spacing: ${trackingEm.toFixed(2)}em on body text` });
|
||
}
|
||
}
|
||
}
|
||
|
||
// --- Crushed letter spacing (mirror of wide-tracking) ---
|
||
// Tracking pulled tighter than ~-0.05em crushes characters into each other.
|
||
// Optical tightening that display type legitimately wants (around -0.02em)
|
||
// stays well above this floor.
|
||
if (hasDirectText && textLen > 20 && fontSize > 0) {
|
||
if (letterSpacingPx != null && letterSpacingPx < 0) {
|
||
const trackingEm = letterSpacingPx / fontSize;
|
||
if (trackingEm <= -0.05) {
|
||
const excerpt = (el.textContent || '').trim().replace(/\s+/g, ' ').slice(0, 40);
|
||
findings.push({ id: 'extreme-negative-tracking', snippet: `letter-spacing: ${trackingEm.toFixed(2)}em — "${excerpt}"` });
|
||
}
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
function checkElementQualityDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
const style = getComputedStyle(el);
|
||
const hasDirectText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 10);
|
||
const textLen = el.textContent?.trim().length || 0;
|
||
// Browser getComputedStyle resolves everything to px — direct parseFloat
|
||
// works.
|
||
const fontSize = parseFloat(style.fontSize) || 16;
|
||
const lineHeightPx = resolveLengthPx(style.lineHeight, fontSize);
|
||
const letterSpacingPx = resolveLengthPx(style.letterSpacing, fontSize);
|
||
const rect = el.getBoundingClientRect();
|
||
const lineMax = (typeof window !== 'undefined' && window.__IMPECCABLE_CONFIG__?.lineLengthMax) || 80;
|
||
const viewportWidth = (typeof window !== 'undefined' ? window.innerWidth : 0) || 0;
|
||
return checkQuality({ el, tag, style, hasDirectText, textLen, fontSize, lineHeightPx, letterSpacingPx, rect, lineMax, viewportWidth, win: typeof window !== 'undefined' ? window : null });
|
||
}
|
||
|
||
// Pure page-level skipped-heading walk. Takes a Document so it works in both
|
||
// the browser and jsdom.
|
||
function checkPageQualityFromDoc(doc) {
|
||
const findings = [];
|
||
const headings = doc.querySelectorAll('h1, h2, h3, h4, h5, h6');
|
||
let prevLevel = 0;
|
||
let prevText = '';
|
||
for (const h of headings) {
|
||
const level = parseInt(h.tagName[1]);
|
||
const text = (h.textContent || '').trim().replace(/\s+/g, ' ').slice(0, 60);
|
||
if (prevLevel > 0 && level > prevLevel + 1) {
|
||
findings.push({
|
||
id: 'skipped-heading',
|
||
snippet: `<h${prevLevel}> "${prevText}" followed by <h${level}> "${text}" (missing h${prevLevel + 1})`,
|
||
});
|
||
}
|
||
prevLevel = level;
|
||
prevText = text;
|
||
}
|
||
return findings;
|
||
}
|
||
|
||
// Browser adapter (returns the legacy { type, detail } shape used by the overlay loop)
|
||
function checkPageQualityDOM() {
|
||
return checkPageQualityFromDoc(document).map(f => ({ type: f.id, detail: f.snippet }));
|
||
}
|
||
|
||
// Node adapters — take pre-extracted jsdom computed style
|
||
|
||
// jsdom doesn't lay out OR resolve em/rem/% to px — so we pre-resolve every
|
||
// CSS length the rule needs ourselves (walking the parent chain for
|
||
// font-size inheritance), and pass `rect: null` to skip the two rules that
|
||
// genuinely need element rects (line-length, cramped-padding).
|
||
function checkElementQuality(el, style, tag, window) {
|
||
const hasDirectText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 10);
|
||
const textLen = el.textContent?.trim().length || 0;
|
||
const fontSize = resolveFontSizePx(el, window);
|
||
const lineHeightPx = resolveLengthPx(style.lineHeight, fontSize);
|
||
const letterSpacingPx = resolveLengthPx(style.letterSpacing, fontSize);
|
||
return checkQuality({ el, tag, style, hasDirectText, textLen, fontSize, lineHeightPx, letterSpacingPx, rect: null, win: window });
|
||
}
|
||
|
||
function checkElementBorders(tag, style, overrides, resolvedRadius, el = null) {
|
||
const sides = ['Top', 'Right', 'Bottom', 'Left'];
|
||
const widths = {}, colors = {};
|
||
for (const s of sides) {
|
||
widths[s] = parseFloat(style[`border${s}Width`]) || 0;
|
||
colors[s] = style[`border${s}Color`] || '';
|
||
// jsdom silently drops any border shorthand containing var(), leaving
|
||
// both width and color empty on the computed style. When the detectHtml
|
||
// pre-pass pulled a resolved value off the rule, use it to fill in the
|
||
// missing side so the side-tab check can run. Real browsers resolve
|
||
// var() natively, so this fallback is a no-op in the browser path.
|
||
if (widths[s] === 0 && overrides && overrides[s]) {
|
||
widths[s] = overrides[s].width;
|
||
colors[s] = overrides[s].color;
|
||
} else if (colors[s] && colors[s].startsWith('var(') && overrides && overrides[s]) {
|
||
// Longhand case: jsdom kept the width but left the color as the
|
||
// literal `var(...)` string. Substitute the resolved color.
|
||
colors[s] = overrides[s].color;
|
||
}
|
||
}
|
||
// resolvedRadius lets the caller pre-resolve the radius via
|
||
// resolveBorderRadiusPx so the value survives jsdom 29.1.0's broken
|
||
// shorthand serialization. Falls back to the computed value for tests
|
||
// and browser callers that don't pre-resolve.
|
||
const radius = resolvedRadius != null
|
||
? resolvedRadius
|
||
: (parseFloat(style.borderRadius) || 0);
|
||
const ownBg = parseAnyColor(style.backgroundColor);
|
||
return checkBorders(tag, widths, colors, radius, {
|
||
tabContext: isTabContextElement(el),
|
||
badgeLike: !!(ownBg && (ownBg.a ?? 1) > 0.1),
|
||
});
|
||
}
|
||
|
||
function checkElementColors(el, style, tag, window, customPropMap, hasAnchorInheritRule) {
|
||
const directText = [...el.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join('');
|
||
const hasDirectText = directText.trim().length > 0;
|
||
|
||
const effectiveBg = resolveBackground(el, window, customPropMap);
|
||
// jsdom returns literal "var(--X)" / "oklch(...)" for color, so plain
|
||
// parseRgb misses Tailwind-tokenized text colors. Resolve through the
|
||
// customPropMap first; fall back to parseRgb for vanilla rgb() pages.
|
||
let textColor = customPropMap ? parseColorResolved(style.color, customPropMap) : null;
|
||
if (!textColor) textColor = parseRgb(style.color);
|
||
|
||
// Anchor-inherit FP workaround: jsdom's UA stylesheet has `:link { color:
|
||
// blue }` at high specificity. The page's `a { color: inherit }` rule
|
||
// (Tailwind v4 preflight) loses to jsdom even though it WINS in real
|
||
// browsers (Chrome's UA wraps :link in :where() — zero specificity).
|
||
// When the page declares the inherit rule AND we see jsdom's default
|
||
// link blue on an anchor, walk to the nearest non-anchor ancestor and
|
||
// use its color instead.
|
||
if (
|
||
hasAnchorInheritRule &&
|
||
textColor &&
|
||
textColor.r === 0 && textColor.g === 0 && textColor.b === 238 &&
|
||
(tag === 'a' || el.closest?.('a'))
|
||
) {
|
||
let cur = el.parentElement;
|
||
while (cur && cur.tagName !== 'HTML') {
|
||
if (cur.tagName !== 'A') {
|
||
const ps = window.getComputedStyle(cur);
|
||
const inh = (customPropMap ? parseColorResolved(ps.color, customPropMap) : null) || parseRgb(ps.color);
|
||
if (inh && !(inh.r === 0 && inh.g === 0 && inh.b === 238)) {
|
||
textColor = inh;
|
||
break;
|
||
}
|
||
}
|
||
cur = cur.parentElement;
|
||
}
|
||
}
|
||
|
||
return checkColors({
|
||
tag,
|
||
textColor,
|
||
bgColor: readOwnBackgroundColor(el, style),
|
||
effectiveBg,
|
||
effectiveBgStops: effectiveBg ? null : resolveGradientStops(el, window),
|
||
fontSize: parseFloat(style.fontSize) || 16,
|
||
fontWeight: parseInt(style.fontWeight) || 400,
|
||
hasDirectText,
|
||
isEmojiOnly: isEmojiOnlyText(directText),
|
||
bgClip: style.webkitBackgroundClip || style.backgroundClip || '',
|
||
bgImage: style.backgroundImage || '',
|
||
classList: el.getAttribute?.('class') || el.className || '',
|
||
});
|
||
}
|
||
|
||
// Static-engine adapter for hover-state contrast. Relies on the static
|
||
// cascade's hover pass (css-cascade.mjs) exposing a per-element hover style
|
||
// via window.getHoverStyle — present only when a :hover rule changed the
|
||
// element's color or background-color relative to its resting state.
|
||
function checkElementHoverContrast(el, style, tag, window) {
|
||
if (typeof window.getHoverStyle !== 'function') return [];
|
||
const hover = window.getHoverStyle(el);
|
||
if (!hover) return [];
|
||
|
||
const directText = [...el.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join('');
|
||
if (directText.trim().length === 0) return [];
|
||
|
||
const textColor = parseAnyColor(hover.color);
|
||
if (!textColor || (textColor.a != null && textColor.a < 1)) return [];
|
||
|
||
const restingOwnBg = parseAnyColor(style.backgroundColor);
|
||
const hoverOwnBg = parseAnyColor(hover.backgroundColor);
|
||
const ownBg = hoverOwnBg || restingOwnBg;
|
||
|
||
// Effective hover background: the element's own hover bg composited over
|
||
// whatever sits underneath. Bail when the surface can't be resolved to a
|
||
// solid color — gradient ancestors are handled (as at rest) by the
|
||
// resting-state check, not duplicated here.
|
||
let bg = null;
|
||
if (ownBg && ownBg.a >= 0.99) {
|
||
bg = ownBg;
|
||
} else {
|
||
const under = resolveBackground(el.parentElement || el, window, null);
|
||
if (!under) return [];
|
||
bg = ownBg && ownBg.a > 0.1 ? compositeColorOver(ownBg, under) : under;
|
||
}
|
||
|
||
return checkHoverContrast({
|
||
tag,
|
||
textColor,
|
||
bg,
|
||
ownBgAlpha: ownBg ? ownBg.a ?? 1 : null,
|
||
fontSize: parseFloat(style.fontSize) || 16,
|
||
fontWeight: parseInt(style.fontWeight) || 400,
|
||
hasDirectText: true,
|
||
isEmojiOnly: isEmojiOnlyText(directText),
|
||
});
|
||
}
|
||
|
||
function checkElementIconTile(el, tag, window) {
|
||
if (!HEADING_TAGS.has(tag)) return [];
|
||
const sibling = el.previousElementSibling;
|
||
if (!sibling) return [];
|
||
|
||
const sibStyle = window.getComputedStyle(sibling);
|
||
// jsdom doesn't lay out — read explicit pixel dimensions from CSS instead.
|
||
const sibWidth = parseFloat(sibStyle.width) || 0;
|
||
const sibHeight = parseFloat(sibStyle.height) || 0;
|
||
|
||
const iconChild = sibling.querySelector('svg, i[data-lucide], i[class*="fa-"], i[class*="icon"]');
|
||
let iconWidth = 0;
|
||
if (iconChild) {
|
||
const iconStyle = window.getComputedStyle(iconChild);
|
||
iconWidth = parseFloat(iconStyle.width) || parseFloat(iconChild.getAttribute('width')) || 0;
|
||
}
|
||
// Or: tile contains an emoji/symbol character directly as its only content
|
||
const sibDirectText = [...sibling.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join('');
|
||
const hasInlineEmojiIcon = sibling.children.length === 0 && isEmojiOnlyText(sibDirectText);
|
||
|
||
return checkIconTile({
|
||
headingTag: tag,
|
||
headingText: el.textContent || '',
|
||
headingTop: 0, // jsdom: no layout, skip vertical-stacking gate
|
||
siblingTag: sibling.tagName.toLowerCase(),
|
||
siblingWidth: sibWidth,
|
||
siblingHeight: sibHeight,
|
||
siblingBottom: 0,
|
||
siblingBgColor: parseRgb(sibStyle.backgroundColor),
|
||
siblingBgImage: sibStyle.backgroundImage || '',
|
||
siblingBorderWidth: parseFloat(sibStyle.borderTopWidth) || 0,
|
||
siblingBorderRadius: resolveBorderRadiusPx(sibling, sibStyle, sibWidth, window),
|
||
hasIconChild: !!iconChild || hasInlineEmojiIcon,
|
||
iconChildWidth: iconWidth,
|
||
});
|
||
}
|
||
|
||
function checkElementItalicSerif(el, style, tag) {
|
||
if (tag !== 'h1' && tag !== 'h2') return [];
|
||
return checkItalicSerif({
|
||
tag,
|
||
fontStyle: style.fontStyle || '',
|
||
fontFamily: style.fontFamily || '',
|
||
fontSize: parseFloat(style.fontSize) || 0,
|
||
headingText: el.textContent || '',
|
||
});
|
||
}
|
||
|
||
function checkElementHeroEyebrow(el, style, tag, window, customPropMap) {
|
||
if (tag !== 'h1') return [];
|
||
const sibling = el.previousElementSibling;
|
||
if (!sibling) return [];
|
||
const sibStyle = window.getComputedStyle(sibling);
|
||
// Resolve Tailwind v4 CSS-variable wrappers (font-weight:var(--font-weight-bold)
|
||
// etc.) before parsing. jsdom returns these verbatim from getComputedStyle;
|
||
// without resolution every style-based gate fails silently on Tailwind v4 builds.
|
||
const fontSizeRaw = customPropMap ? resolveVarRefs(sibStyle.fontSize, customPropMap) : sibStyle.fontSize;
|
||
const fontWeightRaw = customPropMap ? resolveVarRefs(sibStyle.fontWeight, customPropMap) : sibStyle.fontWeight;
|
||
const letterSpacingRaw = customPropMap ? resolveVarRefs(sibStyle.letterSpacing, customPropMap) : sibStyle.letterSpacing;
|
||
const colorRaw = customPropMap ? resolveVarRefs(sibStyle.color, customPropMap) : sibStyle.color;
|
||
const headingFontSizeRaw = customPropMap ? resolveVarRefs(style.fontSize, customPropMap) : style.fontSize;
|
||
const siblingFontSize = parseFloat(fontSizeRaw) || 0;
|
||
// resolveLengthPx returns null for 'normal' / 'auto'; coerce to 0 so the
|
||
// gate falls through cleanly. jsdom returns letter-spacing verbatim
|
||
// (e.g. '0.15em'), unlike real browsers, so this conversion is required.
|
||
return checkHeroEyebrow({
|
||
headingTag: tag,
|
||
headingText: el.textContent || '',
|
||
headingFontSize: parseFloat(headingFontSizeRaw) || 0,
|
||
siblingTag: sibling.tagName.toLowerCase(),
|
||
siblingText: sibling.textContent || '',
|
||
siblingTextTransform: sibStyle.textTransform || '',
|
||
siblingFontSize,
|
||
siblingLetterSpacing: resolveLengthPx(letterSpacingRaw, siblingFontSize) || 0,
|
||
siblingFontWeight: fontWeightRaw || '',
|
||
siblingColor: colorRaw || '',
|
||
// Static cascade marks elements matched by a ::before/::after rule
|
||
// whose geometry is a short chromatic dash (css-cascade.mjs).
|
||
siblingHasAccentDashPseudo: typeof window.hasAccentDashPseudo === 'function'
|
||
? window.hasAccentDashPseudo(sibling)
|
||
: false,
|
||
});
|
||
}
|
||
|
||
function checkRepeatedSectionKickersFromDoc(doc, win) {
|
||
const candidates = collectRepeatedSectionKickerCandidates(
|
||
doc,
|
||
(el) => win.getComputedStyle(el),
|
||
(value, fontSize) => resolveLengthPx(value, fontSize) || 0,
|
||
);
|
||
return checkRepeatedSectionKickers({ candidates });
|
||
}
|
||
|
||
function checkElementMotion(tag, style) {
|
||
return checkMotion({
|
||
tag,
|
||
transitionProperty: style.transitionProperty || '',
|
||
animationName: style.animationName || '',
|
||
timingFunctions: [style.animationTimingFunction, style.transitionTimingFunction].filter(Boolean).join(' '),
|
||
classList: '',
|
||
});
|
||
}
|
||
|
||
function checkElementGlow(tag, style, effectiveBg) {
|
||
const boxShadow = style.boxShadow && style.boxShadow !== 'none' ? style.boxShadow : '';
|
||
const textShadow = style.textShadow && style.textShadow !== 'none' ? style.textShadow : '';
|
||
if (!boxShadow && !textShadow) return [];
|
||
return checkGlow({ tag, boxShadow, textShadow, effectiveBg });
|
||
}
|
||
|
||
// ─── Section 6: Page-Level Checks ───────────────────────────────────────────
|
||
|
||
// Browser page-level checks — use document/getComputedStyle globals
|
||
|
||
function checkTypography() {
|
||
const findings = [];
|
||
|
||
// Walk actual text-bearing elements and tally font usage by *computed style*.
|
||
// This is much more accurate than scanning CSS rules — it ignores rules that
|
||
// exist in the stylesheet but apply to nothing (e.g. demo classes showing
|
||
// anti-patterns), and counts what the user actually sees.
|
||
const fontUsage = new Map(); // primary font name → count of elements
|
||
let totalTextElements = 0;
|
||
for (const el of document.querySelectorAll('p, h1, h2, h3, h4, h5, h6, li, td, th, dd, blockquote, figcaption, a, button, label, span')) {
|
||
// Skip impeccable's own elements
|
||
if (el.closest && el.closest('.impeccable-overlay, .impeccable-label, .impeccable-banner, .impeccable-tooltip')) continue;
|
||
// Only count elements that actually have visible direct text
|
||
const hasText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 0);
|
||
if (!hasText) continue;
|
||
const style = getComputedStyle(el);
|
||
const ff = style.fontFamily;
|
||
if (!ff) continue;
|
||
const stack = ff.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase());
|
||
const primary = stack.find(f => f && !GENERIC_FONTS.has(f));
|
||
if (!primary) continue;
|
||
fontUsage.set(primary, (fontUsage.get(primary) || 0) + 1);
|
||
totalTextElements++;
|
||
}
|
||
|
||
if (totalTextElements >= 20) {
|
||
// A font is "primary" if it's used by at least 15% of text elements
|
||
const PRIMARY_THRESHOLD = 0.15;
|
||
for (const [font, count] of fontUsage) {
|
||
const share = count / totalTextElements;
|
||
if (share < PRIMARY_THRESHOLD) continue;
|
||
if (!OVERUSED_FONTS.has(font)) continue;
|
||
if (isBrandFontOnOwnDomain(font)) continue;
|
||
findings.push({ type: 'overused-font', detail: `Primary font: ${font} (${Math.round(share * 100)}% of text)` });
|
||
}
|
||
|
||
// Single-font check: only one distinct primary font across all text
|
||
if (fontUsage.size === 1) {
|
||
const only = [...fontUsage.keys()][0];
|
||
findings.push({ type: 'single-font', detail: `only font used is ${only}` });
|
||
}
|
||
}
|
||
|
||
const sizes = new Set();
|
||
for (const el of document.querySelectorAll('h1,h2,h3,h4,h5,h6,p,span,a,li,td,th,label,button,div')) {
|
||
const fs = parseFloat(getComputedStyle(el).fontSize);
|
||
if (fs > 0 && fs < 200) sizes.add(Math.round(fs * 10) / 10);
|
||
}
|
||
if (sizes.size >= 3) {
|
||
const sorted = [...sizes].sort((a, b) => a - b);
|
||
const ratio = sorted[sorted.length - 1] / sorted[0];
|
||
if (ratio < 2.0) {
|
||
findings.push({ type: 'flat-type-hierarchy', detail: `Sizes: ${sorted.map(s => s + 'px').join(', ')} (ratio ${ratio.toFixed(1)}:1)` });
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
function isCardLikeDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (SAFE_TAGS.has(tag) || ['input','select','textarea','img','video','canvas','picture'].includes(tag)) return false;
|
||
const style = getComputedStyle(el);
|
||
const cls = el.getAttribute('class') || '';
|
||
const hasShadow = (style.boxShadow && style.boxShadow !== 'none') || /\bshadow(?:-sm|-md|-lg|-xl|-2xl)?\b/.test(cls);
|
||
const hasBorder = /\bborder\b/.test(cls);
|
||
const hasRadius = parseFloat(style.borderRadius) > 0 || /\brounded(?:-sm|-md|-lg|-xl|-2xl|-full)?\b/.test(cls);
|
||
const hasBg = (style.backgroundColor && style.backgroundColor !== 'rgba(0, 0, 0, 0)') || /\bbg-(?:white|gray-\d+|slate-\d+)\b/.test(cls);
|
||
return isCardLikeFromProps(hasShadow, hasBorder, hasRadius, hasBg);
|
||
}
|
||
|
||
function checkLayout() {
|
||
const findings = [];
|
||
const flaggedEls = new Set();
|
||
|
||
for (const el of document.querySelectorAll('*')) {
|
||
if (!isCardLikeDOM(el) || flaggedEls.has(el)) continue;
|
||
const cls = el.getAttribute('class') || '';
|
||
const style = getComputedStyle(el);
|
||
if (style.position === 'absolute' || style.position === 'fixed') continue;
|
||
if (/\b(?:dropdown|popover|tooltip|menu|modal|dialog)\b/i.test(cls)) continue;
|
||
if ((el.textContent?.trim().length || 0) < 10) continue;
|
||
const rect = el.getBoundingClientRect();
|
||
if (rect.width < 50 || rect.height < 30) continue;
|
||
|
||
let parent = el.parentElement;
|
||
while (parent) {
|
||
if (isCardLikeDOM(parent)) { flaggedEls.add(el); break; }
|
||
parent = parent.parentElement;
|
||
}
|
||
}
|
||
|
||
for (const el of flaggedEls) {
|
||
let isAncestor = false;
|
||
for (const other of flaggedEls) {
|
||
if (other !== el && el.contains(other)) { isAncestor = true; break; }
|
||
}
|
||
if (!isAncestor) findings.push({ type: 'nested-cards', detail: 'Card inside card', el });
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
// Node page-level checks — take document/window as parameters
|
||
|
||
function checkPageTypography(doc, win) {
|
||
const findings = [];
|
||
|
||
const fonts = new Set();
|
||
const overusedFound = new Set();
|
||
|
||
for (const sheet of doc.styleSheets) {
|
||
let rules;
|
||
try { rules = sheet.cssRules || sheet.rules; } catch { continue; }
|
||
if (!rules) continue;
|
||
for (const rule of rules) {
|
||
if (rule.type !== 1) continue;
|
||
const ff = rule.style?.fontFamily;
|
||
if (!ff) continue;
|
||
const stack = ff.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase());
|
||
const primary = stack.find(f => f && !GENERIC_FONTS.has(f));
|
||
if (primary) {
|
||
fonts.add(primary);
|
||
if (OVERUSED_FONTS.has(primary)) overusedFound.add(primary);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Check Google Fonts links in HTML
|
||
const html = doc.documentElement?.outerHTML || '';
|
||
for (const f of extractGoogleFontFamilies(html)) {
|
||
fonts.add(f);
|
||
if (OVERUSED_FONTS.has(f)) overusedFound.add(f);
|
||
}
|
||
|
||
// Also parse raw HTML/style content for font-family (jsdom may not expose all via CSSOM)
|
||
const ffRe = /font-family\s*:\s*([^;}]+)/gi;
|
||
let fm;
|
||
while ((fm = ffRe.exec(html)) !== null) {
|
||
for (const f of fm[1].split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase())) {
|
||
if (f && !GENERIC_FONTS.has(f)) {
|
||
fonts.add(f);
|
||
if (OVERUSED_FONTS.has(f)) overusedFound.add(f);
|
||
}
|
||
}
|
||
}
|
||
|
||
for (const font of overusedFound) {
|
||
findings.push({ id: 'overused-font', snippet: `Primary font: ${font}` });
|
||
}
|
||
|
||
// Single font
|
||
if (fonts.size === 1) {
|
||
const els = doc.querySelectorAll('*');
|
||
if (els.length >= 20) {
|
||
findings.push({ id: 'single-font', snippet: `only font used is ${[...fonts][0]}` });
|
||
}
|
||
}
|
||
|
||
// Flat type hierarchy
|
||
const sizes = new Set();
|
||
const textEls = doc.querySelectorAll('h1, h2, h3, h4, h5, h6, p, span, a, li, td, th, label, button, div');
|
||
for (const el of textEls) {
|
||
const fontSize = parseFloat(win.getComputedStyle(el).fontSize);
|
||
// Filter out sub-8px values (jsdom doesn't resolve relative units properly)
|
||
if (fontSize >= 8 && fontSize < 200) sizes.add(Math.round(fontSize * 10) / 10);
|
||
}
|
||
if (sizes.size >= 3) {
|
||
const sorted = [...sizes].sort((a, b) => a - b);
|
||
const ratio = sorted[sorted.length - 1] / sorted[0];
|
||
if (ratio < 2.0) {
|
||
findings.push({ id: 'flat-type-hierarchy', snippet: `Sizes: ${sorted.map(s => s + 'px').join(', ')} (ratio ${ratio.toFixed(1)}:1)` });
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
function isCardLike(el, win) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (SAFE_TAGS.has(tag) || ['input', 'select', 'textarea', 'img', 'video', 'canvas', 'picture'].includes(tag)) return false;
|
||
|
||
const style = win.getComputedStyle(el);
|
||
const rawStyle = el.getAttribute?.('style') || '';
|
||
const cls = el.getAttribute?.('class') || '';
|
||
|
||
const hasShadow = (style.boxShadow && style.boxShadow !== 'none') ||
|
||
/\bshadow(?:-sm|-md|-lg|-xl|-2xl)?\b/.test(cls) || /box-shadow/i.test(rawStyle);
|
||
const hasBorder = /\bborder\b/.test(cls);
|
||
const widthPx = parseFloat(style.width) || 0;
|
||
const hasRadius = resolveBorderRadiusPx(el, style, widthPx, win) > 0 ||
|
||
/\brounded(?:-sm|-md|-lg|-xl|-2xl|-full)?\b/.test(cls) || /border-radius/i.test(rawStyle);
|
||
const hasBg = /\bbg-(?:white|gray-\d+|slate-\d+)\b/.test(cls) ||
|
||
/background(?:-color)?\s*:\s*(?!transparent)/i.test(rawStyle);
|
||
|
||
return isCardLikeFromProps(hasShadow, hasBorder, hasRadius, hasBg);
|
||
}
|
||
|
||
function checkPageLayout(doc, win) {
|
||
const findings = [];
|
||
|
||
// Nested cards
|
||
const allEls = doc.querySelectorAll('*');
|
||
const flaggedEls = new Set();
|
||
for (const el of allEls) {
|
||
if (!isCardLike(el, win)) continue;
|
||
if (flaggedEls.has(el)) continue;
|
||
|
||
const tag = el.tagName.toLowerCase();
|
||
const cls = el.getAttribute?.('class') || '';
|
||
const rawStyle = el.getAttribute?.('style') || '';
|
||
|
||
if (['pre', 'code'].includes(tag)) continue;
|
||
if (/\b(?:absolute|fixed)\b/.test(cls) || /position\s*:\s*(?:absolute|fixed)/i.test(rawStyle)) continue;
|
||
if ((el.textContent?.trim().length || 0) < 10) continue;
|
||
if (/\b(?:dropdown|popover|tooltip|menu|modal|dialog)\b/i.test(cls)) continue;
|
||
|
||
// Walk up to find card-like ancestor
|
||
let parent = el.parentElement;
|
||
while (parent) {
|
||
if (isCardLike(parent, win)) {
|
||
flaggedEls.add(el);
|
||
break;
|
||
}
|
||
parent = parent.parentElement;
|
||
}
|
||
}
|
||
|
||
// Only report innermost nested cards
|
||
for (const el of flaggedEls) {
|
||
let isAncestorOfFlagged = false;
|
||
for (const other of flaggedEls) {
|
||
if (other !== el && el.contains(other)) {
|
||
isAncestorOfFlagged = true;
|
||
break;
|
||
}
|
||
}
|
||
if (!isAncestorOfFlagged) {
|
||
findings.push({ id: 'nested-cards', snippet: `Card inside card (${el.tagName.toLowerCase()})` });
|
||
}
|
||
}
|
||
|
||
return findings;
|
||
}
|
||
|
||
// ─── Cream / beige palette (the default "tasteful" AI surface) ────────────────
|
||
// A warm, lightly-tinted off-white page background — light, with R≥G≥B and a
|
||
// small warm tint (not white, not a strong color). The current reflex surface.
|
||
function isCreamColor(rgb) {
|
||
if (!rgb) return false;
|
||
const { r, g, b } = rgb;
|
||
if (Math.min(r, g, b) < 209) return false; // must be light
|
||
if (!(r >= g && g >= b)) return false; // warm ordering
|
||
const warmth = r - b;
|
||
return warmth >= 6 && warmth <= 48; // tinted, not white, not strong
|
||
}
|
||
|
||
// Tailwind background utilities that render as a warm off-white surface. The
|
||
// static engine doesn't fetch Tailwind's CSS, so a `bg-amber-50` on <body>
|
||
// resolves to nothing in computed style — catch it from the class list
|
||
// instead. Candidate tokens map to their actual Tailwind hex and are still
|
||
// filtered through isCreamColor, so neutral grays (stone) and over-saturated
|
||
// shades drop out on their own.
|
||
const TAILWIND_BG_HEX = {
|
||
'bg-amber-50': '#fffbeb', 'bg-amber-100': '#fef3c7',
|
||
'bg-orange-50': '#fff7ed', 'bg-orange-100': '#ffedd5',
|
||
'bg-yellow-50': '#fefce8',
|
||
'bg-stone-50': '#fafaf9', 'bg-stone-100': '#f5f5f4', 'bg-stone-200': '#e7e5e4',
|
||
};
|
||
|
||
function creamFromClassList(cls) {
|
||
if (!cls) return null;
|
||
// Arbitrary value: bg-[#f5f0e6] / bg-[rgb(245_240_230)] (underscores = spaces).
|
||
const arb = cls.match(/\bbg-\[([^\]]+)\]/);
|
||
if (arb && isCreamColor(parseAnyColor(arb[1].replace(/_/g, ' ')))) return `bg-[${arb[1]}]`;
|
||
// Named warm-light utilities.
|
||
for (const [tok, hex] of Object.entries(TAILWIND_BG_HEX)) {
|
||
if (new RegExp(`(^|\\s)${tok}($|\\s)`).test(cls) && isCreamColor(parseAnyColor(hex))) return tok;
|
||
}
|
||
return null;
|
||
}
|
||
|
||
function checkCreamPalette(doc, win) {
|
||
const findings = [];
|
||
const body = doc.body || (doc.querySelector ? doc.querySelector('body') : null);
|
||
if (!body) return findings;
|
||
const html = doc.documentElement;
|
||
const getCS = (el) => (win ? win.getComputedStyle(el) : getComputedStyle(el));
|
||
|
||
// 1. Computed background — covers inline / <style> / linked CSS, and Tailwind
|
||
// once it's actually rendered (browser path).
|
||
let bg = readOwnBackgroundColor(body, getCS(body));
|
||
if (!bg || bg.a === 0) {
|
||
if (html) bg = readOwnBackgroundColor(html, getCS(html));
|
||
}
|
||
if (isCreamColor(bg)) {
|
||
findings.push({ id: 'cream-palette', snippet: `cream/beige page background rgb(${bg.r}, ${bg.g}, ${bg.b})` });
|
||
return findings;
|
||
}
|
||
|
||
// 2. Tailwind class fallback — for the static path, where utility classes
|
||
// never resolve to computed CSS.
|
||
for (const el of [body, html]) {
|
||
const tok = creamFromClassList(el && el.getAttribute ? el.getAttribute('class') : '');
|
||
if (tok) {
|
||
findings.push({ id: 'cream-palette', snippet: `cream/beige page background (Tailwind ${tok})` });
|
||
break;
|
||
}
|
||
}
|
||
return findings;
|
||
}
|
||
|
||
// ─── Oversized hero headline ────────────────────────────────────────────────
|
||
// Fires when a *long* headline is set at display size and actually dominates
|
||
// the viewport. A punchy one- or two-word headline at the same size is a
|
||
// legitimate stylistic choice, and a large-but-contained two-line hero should
|
||
// pass too — length and viewport share together are the tell.
|
||
const OVERSIZED_H1_FONT_PX = 72;
|
||
const OVERSIZED_H1_MIN_CHARS = 40;
|
||
const OVERSIZED_H1_MIN_VIEWPORT_HEIGHT_RATIO = 0.28;
|
||
const OVERSIZED_H1_MIN_VIEWPORT_AREA_RATIO = 0.25;
|
||
function checkOversizedH1({ tag, fontSize, headingText, rect = null, viewportWidth = 0, viewportHeight = 0 }) {
|
||
if (tag !== 'h1') return [];
|
||
const textLen = headingText.length;
|
||
if (fontSize >= OVERSIZED_H1_FONT_PX && textLen >= OVERSIZED_H1_MIN_CHARS) {
|
||
let viewportDetail = '';
|
||
if (rect && viewportWidth > 0 && viewportHeight > 0) {
|
||
const heightRatio = rect.height / viewportHeight;
|
||
const areaRatio = (rect.width * rect.height) / (viewportWidth * viewportHeight);
|
||
const dominatesViewport = heightRatio >= OVERSIZED_H1_MIN_VIEWPORT_HEIGHT_RATIO
|
||
|| areaRatio >= OVERSIZED_H1_MIN_VIEWPORT_AREA_RATIO;
|
||
if (!dominatesViewport) return [];
|
||
viewportDetail = `, ${Math.round(heightRatio * 100)}vh`;
|
||
}
|
||
return [{ id: 'oversized-h1', snippet: `${Math.round(fontSize)}px h1, ${textLen} chars${viewportDetail} "${headingText.slice(0, 60)}"` }];
|
||
}
|
||
return [];
|
||
}
|
||
|
||
function checkElementOversizedH1(el, style, tag, window) {
|
||
if (tag !== 'h1') return [];
|
||
const fontSize = resolveFontSizePx(el, window);
|
||
const headingText = (el.textContent || '').trim().replace(/\s+/g, ' ');
|
||
return checkOversizedH1({ tag, fontSize, headingText });
|
||
}
|
||
|
||
function checkElementOversizedH1DOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (tag !== 'h1') return [];
|
||
const style = getComputedStyle(el);
|
||
const fontSize = parseFloat(style.fontSize) || 0;
|
||
const headingText = (el.textContent || '').trim().replace(/\s+/g, ' ');
|
||
const rect = el.getBoundingClientRect();
|
||
const viewportWidth = (typeof window !== 'undefined' ? window.innerWidth : 0) || 0;
|
||
const viewportHeight = (typeof window !== 'undefined' ? window.innerHeight : 0) || 0;
|
||
return checkOversizedH1({ tag, fontSize, headingText, rect, viewportWidth, viewportHeight });
|
||
}
|
||
|
||
// ─── GPT tell: hairline border + wide diffuse shadow (gated --gpt) ────────────
|
||
const CSS_COLOR_TOKEN_RE = /(?:rgba?|hsla?|oklch|oklab|lab|lch|color)\([^)]*\)|#[0-9a-fA-F]{3,8}\b|\b(?:black|white|transparent|currentcolor)\b/gi;
|
||
|
||
function shadowLayerAlpha(layer) {
|
||
CSS_COLOR_TOKEN_RE.lastIndex = 0;
|
||
const match = CSS_COLOR_TOKEN_RE.exec(layer);
|
||
if (!match) return 1;
|
||
if (match[0].toLowerCase() === 'transparent') return 0;
|
||
const parsed = parseAnyColor(match[0]);
|
||
return parsed ? (parsed.a ?? 1) : 1;
|
||
}
|
||
|
||
function shadowMaxBlurPx(boxShadow, { minAlpha = 0 } = {}) {
|
||
if (!boxShadow || boxShadow === 'none') return 0;
|
||
let maxBlur = 0;
|
||
// Split into layers on commas not inside parentheses (rgba(...) etc.).
|
||
for (const layer of boxShadow.split(/,(?![^()]*\))/)) {
|
||
if (shadowLayerAlpha(layer) < minAlpha) continue;
|
||
// Strip colors and keywords (rgba()/hsl()/hex/named/inset/px), leaving the
|
||
// ordered length tokens: offsetX offsetY blur [spread]. Static jsdom keeps
|
||
// unitless zeros ("0 0 24px"); browsers normalize to px ("0px 0px 24px") —
|
||
// both reduce to the same numbers here.
|
||
const cleaned = layer.replace(CSS_COLOR_TOKEN_RE, ' ').replace(/\b[a-z]+\b/gi, ' ');
|
||
const nums = [...cleaned.matchAll(/-?\d*\.?\d+/g)].map(m => parseFloat(m[0]));
|
||
if (nums.length >= 3) maxBlur = Math.max(maxBlur, nums[2]);
|
||
}
|
||
return maxBlur;
|
||
}
|
||
|
||
function cssColorAlpha(value) {
|
||
if (cssColorIsTransparent(value)) return 0;
|
||
const parsed = parseAnyColor(value);
|
||
return parsed ? (parsed.a ?? 1) : 1;
|
||
}
|
||
|
||
function checkGptThinBorderWideShadow({ borderWidths, borderColors, boxShadow }) {
|
||
const visibleThinBorders = borderWidths
|
||
.map((width, index) => ({ width, alpha: cssColorAlpha(borderColors?.[index] || '') }))
|
||
.filter(({ width, alpha }) => width > 0 && width <= 1.5 && alpha >= 0.28);
|
||
const maxBorder = Math.max(0, ...visibleThinBorders.map(({ width }) => width));
|
||
const blur = shadowMaxBlurPx(boxShadow, { minAlpha: 0.12 });
|
||
if (visibleThinBorders.length >= 2 && blur >= 16) {
|
||
return [{ id: 'gpt-thin-border-wide-shadow', snippet: `${maxBorder}px border + ${Math.round(blur)}px shadow blur` }];
|
||
}
|
||
return [];
|
||
}
|
||
|
||
function borderWidthsFromStyle(style) {
|
||
return [
|
||
parseFloat(style.borderTopWidth) || 0,
|
||
parseFloat(style.borderRightWidth) || 0,
|
||
parseFloat(style.borderBottomWidth) || 0,
|
||
parseFloat(style.borderLeftWidth) || 0,
|
||
];
|
||
}
|
||
|
||
function borderColorsFromStyle(style) {
|
||
return [
|
||
style.borderTopColor || '',
|
||
style.borderRightColor || '',
|
||
style.borderBottomColor || '',
|
||
style.borderLeftColor || '',
|
||
];
|
||
}
|
||
|
||
function checkElementGptBorderShadow(el, style) {
|
||
return checkGptThinBorderWideShadow({ borderWidths: borderWidthsFromStyle(style), borderColors: borderColorsFromStyle(style), boxShadow: style.boxShadow || '' });
|
||
}
|
||
|
||
function checkElementGptBorderShadowDOM(el) {
|
||
const style = getComputedStyle(el);
|
||
return checkGptThinBorderWideShadow({ borderWidths: borderWidthsFromStyle(style), borderColors: borderColorsFromStyle(style), boxShadow: style.boxShadow || '' });
|
||
}
|
||
|
||
// ─── Clipped overflow container ───────────────────────────────────────────────
|
||
// A clipping container (overflow hidden/clip, not a scroll region) wrapping an
|
||
// absolutely/fixed-positioned descendant clips popovers/menus that must escape.
|
||
function classSelector(el) {
|
||
const cls = (el.getAttribute ? el.getAttribute('class') : el.className) || '';
|
||
const tokens = String(cls).trim().split(/\s+/).filter(Boolean);
|
||
const tag = el.tagName ? el.tagName.toLowerCase() : 'el';
|
||
return tokens.length ? `${tag}.${tokens.join('.')}` : tag;
|
||
}
|
||
|
||
function positionedChildIsDecorative(child) {
|
||
if (!child || typeof child.getAttribute !== 'function') return false;
|
||
if (child.closest?.('[aria-hidden="true"]')) return true;
|
||
const role = (child.getAttribute('role') || '').toLowerCase();
|
||
if (role === 'none' || role === 'presentation') return true;
|
||
const tag = child.tagName ? child.tagName.toLowerCase() : '';
|
||
if (['img', 'svg', 'canvas', 'video'].includes(tag)) return true;
|
||
const ident = `${child.getAttribute('class') || ''} ${child.getAttribute('id') || ''}`;
|
||
if (
|
||
/\b(art|bg|background|badge|blob|crop|decor|dot|glow|grain|image|mask|ornament|overlay|photo|scrim|shadow|shine|texture)\b/i.test(ident) &&
|
||
!positionedChildHasSubstantiveContent(child)
|
||
) {
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
const POSITIONED_CHILD_INTERACTIVE_SELECTOR = [
|
||
'a[href]',
|
||
'button',
|
||
'input',
|
||
'select',
|
||
'summary',
|
||
'textarea',
|
||
'[tabindex]:not([tabindex="-1"])',
|
||
'[role="button"]',
|
||
'[role="dialog"]',
|
||
'[role="link"]',
|
||
'[role="listbox"]',
|
||
'[role="menu"]',
|
||
'[role="menuitem"]',
|
||
'[role="option"]',
|
||
'[role="tooltip"]',
|
||
].join(',');
|
||
|
||
function positionedChildHasSubstantiveContent(child) {
|
||
const text = (child.textContent || '').replace(/\s+/g, ' ').trim();
|
||
if (text.length > 0) return true;
|
||
if (typeof child.matches === 'function') {
|
||
try {
|
||
if (child.matches(POSITIONED_CHILD_INTERACTIVE_SELECTOR)) return true;
|
||
} catch {}
|
||
}
|
||
if (typeof child.querySelector === 'function') {
|
||
try {
|
||
if (child.querySelector(POSITIONED_CHILD_INTERACTIVE_SELECTOR)) return true;
|
||
} catch {}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function clippingContainerIsIntentionalViewport(el) {
|
||
if (!el || typeof el.getAttribute !== 'function') return false;
|
||
const roleDescription = (el.getAttribute('aria-roledescription') || '').toLowerCase();
|
||
if (/\b(carousel|slider)\b/.test(roleDescription)) return true;
|
||
const ident = `${el.getAttribute('class') || ''} ${el.getAttribute('id') || ''}`.toLowerCase();
|
||
return /\b(carousel|comparison|compare|fisheye|marquee|preview|scroller|slider|slideshow|split|viewport)\b/.test(ident) ||
|
||
/\b(demo-area|demo-stage|demo-viewport)\b/.test(ident);
|
||
}
|
||
|
||
function elementRect(el) {
|
||
if (!el || typeof el.getBoundingClientRect !== 'function') return null;
|
||
try {
|
||
const rect = el.getBoundingClientRect();
|
||
if (!rect) return null;
|
||
const values = [rect.top, rect.right, rect.bottom, rect.left, rect.width, rect.height];
|
||
if (!values.every(Number.isFinite)) return null;
|
||
if (rect.width <= 0 && rect.height <= 0) return null;
|
||
return rect;
|
||
} catch {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
function positionedStyleImpliesEscape(style) {
|
||
const values = [
|
||
style.top,
|
||
style.right,
|
||
style.bottom,
|
||
style.left,
|
||
style.inset,
|
||
style.insetBlock,
|
||
style.insetInline,
|
||
style.insetBlockStart,
|
||
style.insetBlockEnd,
|
||
style.insetInlineStart,
|
||
style.insetInlineEnd,
|
||
].filter(Boolean).map(value => String(value).trim().toLowerCase());
|
||
for (const value of values) {
|
||
if (/(^|[\s(])-+(?:\d|\.)/.test(value)) return true;
|
||
if (/(^|[\s(])100(?:\.0+)?%/.test(value)) return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
function positionedChildEscapesClip(el, child, clipX, clipY) {
|
||
const parentRect = elementRect(el);
|
||
const childRect = elementRect(child);
|
||
if (!parentRect || !childRect) return null;
|
||
const threshold = 2;
|
||
return Boolean(
|
||
(clipX && (childRect.left < parentRect.left - threshold || childRect.right > parentRect.right + threshold)) ||
|
||
(clipY && (childRect.top < parentRect.top - threshold || childRect.bottom > parentRect.bottom + threshold))
|
||
);
|
||
}
|
||
|
||
function checkClippedOverflow(el, style, getStyle) {
|
||
const clips = (v) => v === 'hidden' || v === 'clip';
|
||
const scrolls = (v) => v === 'auto' || v === 'scroll';
|
||
const ox = style.overflowX || '', oy = style.overflowY || '', ov = style.overflow || '';
|
||
const clipX = clips(ox) || clips(ov);
|
||
const clipY = clips(oy) || clips(ov);
|
||
const anyClip = clipX || clipY;
|
||
const anyScroll = scrolls(ox) || scrolls(oy) || scrolls(ov);
|
||
if (!anyClip || anyScroll) return [];
|
||
if (clippingContainerIsIntentionalViewport(el)) return [];
|
||
if (!el.querySelectorAll) return [];
|
||
for (const child of el.querySelectorAll('*')) {
|
||
const childStyle = getStyle(child);
|
||
const pos = childStyle.position || '';
|
||
if (pos === 'absolute' || pos === 'fixed') {
|
||
if (positionedChildIsDecorative(child)) continue;
|
||
const escapes = positionedChildEscapesClip(el, child, clipX, clipY);
|
||
if (escapes === false) continue;
|
||
if (escapes === null && !positionedStyleImpliesEscape(childStyle)) continue;
|
||
return [{ id: 'clipped-overflow-container', snippet: `${classSelector(el)} clips a positioned child` }];
|
||
}
|
||
}
|
||
return [];
|
||
}
|
||
|
||
function checkElementClippedOverflow(el, style, tag, window) {
|
||
return checkClippedOverflow(el, style, (n) => window.getComputedStyle(n));
|
||
}
|
||
|
||
function checkElementClippedOverflowDOM(el) {
|
||
const style = getComputedStyle(el);
|
||
return checkClippedOverflow(el, style, (n) => getComputedStyle(n));
|
||
}
|
||
|
||
// ─── Text overflow (browser-only: needs scrollWidth/clientWidth) ──────────────
|
||
const TEXT_OVERFLOW_SKIP_TAGS = new Set(['pre', 'code', 'textarea', 'svg', 'canvas', 'select', 'option', 'marquee']);
|
||
|
||
function metricLengthPx(value, fontSizePx = 16) {
|
||
if (typeof value === 'number' && Number.isFinite(value)) return value;
|
||
if (typeof value !== 'string') return null;
|
||
return resolveLengthPx(value, fontSizePx);
|
||
}
|
||
|
||
function firstMetricLengthPx(fontSizePx, ...values) {
|
||
for (const value of values) {
|
||
const parsed = metricLengthPx(value, fontSizePx);
|
||
if (parsed !== null) return parsed;
|
||
}
|
||
return null;
|
||
}
|
||
|
||
function expandBoxShorthand(parts) {
|
||
if (parts.length === 1) return [parts[0], parts[0], parts[0], parts[0]];
|
||
if (parts.length === 2) return [parts[0], parts[1], parts[0], parts[1]];
|
||
if (parts.length === 3) return [parts[0], parts[1], parts[2], parts[1]];
|
||
return [parts[0], parts[1], parts[2], parts[3]];
|
||
}
|
||
|
||
function clippedByInset(clipPath) {
|
||
const match = String(clipPath || '').trim().toLowerCase().match(/^inset\s*\(([^)]*)\)$/);
|
||
if (!match) return false;
|
||
const beforeRound = match[1].split(/\s+round\s+/)[0].trim();
|
||
if (!beforeRound) return false;
|
||
const values = expandBoxShorthand(beforeRound.split(/\s+/).slice(0, 4));
|
||
const percents = values.map(value => String(value).trim().match(/^(-?\d+(?:\.\d+)?)%$/));
|
||
if (percents.some(match => !match)) return false;
|
||
const [top, right, bottom, left] = percents.map(match => parseFloat(match[1]));
|
||
return top + bottom >= 100 || left + right >= 100;
|
||
}
|
||
|
||
function clippedByRect(clip) {
|
||
const match = String(clip || '').trim().toLowerCase().match(/^rect\s*\(([^)]*)\)$/);
|
||
if (!match) return false;
|
||
const values = match[1].split(/[,\s]+/).map(value => value.trim()).filter(Boolean);
|
||
if (values.length !== 4) return false;
|
||
const [top, right, bottom, left] = values.map(value => metricLengthPx(value, 16));
|
||
if ([top, right, bottom, left].some(value => value === null)) return false;
|
||
return bottom <= top || right <= left;
|
||
}
|
||
|
||
function isScreenReaderOnlyTextStyle(style, metrics = {}) {
|
||
if (!style) return false;
|
||
const overflowValues = [style.overflow, style.overflowX, style.overflowY]
|
||
.map(value => String(value || '').toLowerCase());
|
||
const clipsOverflow = overflowValues.some(value => value === 'hidden' || value === 'clip');
|
||
|
||
const fontSize = metricLengthPx(style.fontSize, 16) || 16;
|
||
const width = firstMetricLengthPx(fontSize, metrics.width, metrics.clientWidth, style.width, style.inlineSize);
|
||
const height = firstMetricLengthPx(fontSize, metrics.height, metrics.clientHeight, style.height, style.blockSize);
|
||
const isTiny = width !== null && height !== null && width <= 2 && height <= 2;
|
||
const isAbsolutelyHidden = String(style.position || '').toLowerCase() === 'absolute' && isTiny && clipsOverflow;
|
||
|
||
const clipPath = String(style.clipPath || style.webkitClipPath || '').trim();
|
||
const clip = String(style.clip || '').trim();
|
||
return isAbsolutelyHidden || clippedByInset(clipPath) || clippedByRect(clip);
|
||
}
|
||
|
||
function isRenderedForBrowserRule(el) {
|
||
for (let cur = el; cur && cur.nodeType === 1; cur = cur.parentElement) {
|
||
if (cur.getAttribute?.('aria-hidden') === 'true') return false;
|
||
const style = getComputedStyle(cur);
|
||
const visibility = String(style.visibility || '').toLowerCase();
|
||
if (style.display === 'none' || visibility === 'hidden' || visibility === 'collapse') return false;
|
||
if ((parseFloat(style.opacity) || 0) <= 0.01) return false;
|
||
if (String(style.contentVisibility || '').toLowerCase() === 'hidden') return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
function checkElementTextOverflowDOM(el) {
|
||
const tag = el.tagName.toLowerCase();
|
||
if (TEXT_OVERFLOW_SKIP_TAGS.has(tag)) return [];
|
||
if (!isRenderedForBrowserRule(el)) return [];
|
||
// Only the element that actually owns overflowing text — not its ancestors,
|
||
// which inherit a wider scrollWidth from the spilling descendant.
|
||
const hasDirectText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 0);
|
||
if (!hasDirectText) return [];
|
||
const style = getComputedStyle(el);
|
||
const rect = el.getBoundingClientRect ? el.getBoundingClientRect() : null;
|
||
if (isScreenReaderOnlyTextStyle(style, {
|
||
width: rect?.width,
|
||
height: rect?.height,
|
||
clientWidth: el.clientWidth,
|
||
clientHeight: el.clientHeight,
|
||
})) return [];
|
||
const isScrollRegion = (s) => /(auto|scroll)/.test(s.overflowX || '') || /(auto|scroll)/.test(s.overflow || '');
|
||
if (isScrollRegion(style)) return [];
|
||
// A scrollable ancestor means this overflow is intentional and scrollable.
|
||
for (let p = el.parentElement; p; p = p.parentElement) {
|
||
if (isScrollRegion(getComputedStyle(p))) return [];
|
||
}
|
||
const delta = el.scrollWidth - el.clientWidth;
|
||
if (el.clientWidth > 0 && delta >= 16) {
|
||
return [{ id: 'text-overflow', snippet: `${classSelector(el)} overflows its box by ${Math.round(delta)}px` }];
|
||
}
|
||
return [];
|
||
}
|
||
|
||
export {
|
||
checkBorders,
|
||
isEmojiOnlyText,
|
||
checkColors,
|
||
checkHoverContrast,
|
||
checkElementHoverContrast,
|
||
parseColorMix,
|
||
compositeColorOver,
|
||
isCardLikeFromProps,
|
||
checkIconTile,
|
||
resolveSerif,
|
||
checkItalicSerif,
|
||
isAccentColor,
|
||
checkHeroEyebrow,
|
||
checkRepeatedSectionKickers,
|
||
checkMotion,
|
||
checkGlow,
|
||
scanCssTextForGlow,
|
||
scanCssTextForRadialHalo,
|
||
scanCssTextForPseudoStripe,
|
||
scanCssTextForInsetStripe,
|
||
scanCssTextForMarquee,
|
||
collectMarqueeKeyframes,
|
||
collectCssCustomProps,
|
||
cssLengthToPx,
|
||
scanCssTextForPulsingDot,
|
||
checkHtmlPatterns,
|
||
readOwnBackgroundColor,
|
||
resolveBackground,
|
||
resolveGradientStops,
|
||
parseRadiusToPx,
|
||
resolveBorderRadiusPx,
|
||
checkElementBordersDOM,
|
||
checkElementColorsDOM,
|
||
checkElementIconTileDOM,
|
||
checkElementItalicSerifDOM,
|
||
checkElementHeroEyebrowDOM,
|
||
buildCustomPropMap,
|
||
resolveVarRefs,
|
||
oklchToRgb,
|
||
parseAnyColor,
|
||
parseColorResolved,
|
||
cleanInlineText,
|
||
isRepeatedKickerCandidate,
|
||
collectRepeatedSectionKickerCandidates,
|
||
checkRepeatedSectionKickersDOM,
|
||
checkElementMotionDOM,
|
||
checkElementGlowDOM,
|
||
checkElementAIPaletteDOM,
|
||
resolveFontSizePx,
|
||
resolveLengthPx,
|
||
checkQuality,
|
||
checkElementQualityDOM,
|
||
checkPageQualityFromDoc,
|
||
checkPageQualityDOM,
|
||
checkElementQuality,
|
||
checkElementBorders,
|
||
checkElementColors,
|
||
checkElementIconTile,
|
||
checkElementItalicSerif,
|
||
checkElementHeroEyebrow,
|
||
checkRepeatedSectionKickersFromDoc,
|
||
checkElementMotion,
|
||
checkElementGlow,
|
||
checkTypography,
|
||
isCardLikeDOM,
|
||
checkLayout,
|
||
checkPageTypography,
|
||
isCardLike,
|
||
checkPageLayout,
|
||
isCreamColor,
|
||
checkCreamPalette,
|
||
checkOversizedH1,
|
||
checkElementOversizedH1,
|
||
checkElementOversizedH1DOM,
|
||
shadowMaxBlurPx,
|
||
checkGptThinBorderWideShadow,
|
||
checkElementGptBorderShadow,
|
||
checkElementGptBorderShadowDOM,
|
||
checkClippedOverflow,
|
||
checkElementClippedOverflow,
|
||
checkElementClippedOverflowDOM,
|
||
isScreenReaderOnlyTextStyle,
|
||
checkElementTextOverflowDOM,
|
||
};
|