| 1 | import { |
| 2 | BORDER_SAFE_TAGS, |
| 3 | GENERIC_FONTS, |
| 4 | KNOWN_SERIF_FONTS, |
| 5 | OVERUSED_FONTS, |
| 6 | SAFE_TAGS, |
| 7 | WCAG_LARGE_BOLD_TEXT_PX, |
| 8 | WCAG_LARGE_TEXT_PX, |
| 9 | isBrandFontOnOwnDomain, |
| 10 | } from '../shared/constants.mjs'; |
| 11 | import { |
| 12 | colorToHex, |
| 13 | contrastRatio, |
| 14 | getHue, |
| 15 | hasChroma, |
| 16 | isNeutralColor, |
| 17 | parseGradientColors, |
| 18 | parseRgb, |
| 19 | relativeLuminance, |
| 20 | } from '../shared/color.mjs'; |
| 21 | |
| 22 | const DETECTOR_IS_BROWSER = typeof window !== 'undefined'; |
| 23 | |
| 24 | // ─── Section 3: Pure Detection ────────────────────────────────────────────── |
| 25 | |
| 26 | function checkBorders(tag, widths, colors, radius) { |
| 27 | if (BORDER_SAFE_TAGS.has(tag)) return []; |
| 28 | const findings = []; |
| 29 | const sides = ['Top', 'Right', 'Bottom', 'Left']; |
| 30 | |
| 31 | for (const side of sides) { |
| 32 | const w = widths[side]; |
| 33 | if (w < 1 || isNeutralColor(colors[side])) continue; |
| 34 | |
| 35 | const otherSides = sides.filter(s => s !== side); |
| 36 | const maxOther = Math.max(...otherSides.map(s => widths[s])); |
| 37 | if (!(w >= 2 && (maxOther <= 1 || w >= maxOther * 2))) continue; |
| 38 | |
| 39 | const sn = side.toLowerCase(); |
| 40 | const isSide = side === 'Left' || side === 'Right'; |
| 41 | |
| 42 | if (isSide) { |
| 43 | if (radius > 0) findings.push({ id: 'side-tab', snippet: `border-${sn}: ${w}px + border-radius: ${radius}px` }); |
| 44 | else if (w >= 3) findings.push({ id: 'side-tab', snippet: `border-${sn}: ${w}px` }); |
| 45 | } else { |
| 46 | if (radius > 0 && w >= 2) findings.push({ id: 'border-accent-on-rounded', snippet: `border-${sn}: ${w}px + border-radius: ${radius}px` }); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | return findings; |
| 51 | } |
| 52 | |
| 53 | // Returns true if the given text is composed entirely of emoji characters |
| 54 | // (plus whitespace / variation selectors). Emojis render as multicolor glyphs |
| 55 | // regardless of CSS `color`, so contrast checks against the element's text |
| 56 | // color are meaningless for these nodes. |
| 57 | 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; |
| 58 | 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; |
| 59 | function isEmojiOnlyText(text) { |
| 60 | if (!text) return false; |
| 61 | if (!EMOJI_CHAR_RE.test(text)) return false; |
| 62 | return text.replace(EMOJI_CHARS_GLOBAL, '').trim() === ''; |
| 63 | } |
| 64 | |
| 65 | function checkColors(opts) { |
| 66 | const { tag, textColor, bgColor, effectiveBg, effectiveBgStops, fontSize, fontWeight, hasDirectText, isEmojiOnly, bgClip, bgImage, classList } = opts; |
| 67 | if (SAFE_TAGS.has(tag)) { |
| 68 | // Exception for <a> and <button> elements styled as buttons. SAFE_TAGS |
| 69 | // exists to suppress contrast noise on inline links and unstyled controls, |
| 70 | // where the element has no own background and the contrast against the |
| 71 | // ancestor surface is already the intended visual. When the element has |
| 72 | // its own opaque background and direct text, it is a styled button — and |
| 73 | // contrast on its own surface is a real, frequent bug worth flagging. |
| 74 | const isStyledButton = (tag === 'a' || tag === 'button') |
| 75 | && hasDirectText |
| 76 | && bgColor && bgColor.a > 0.5; |
| 77 | if (!isStyledButton) return []; |
| 78 | } |
| 79 | const findings = []; |
| 80 | |
| 81 | if (hasDirectText && textColor && !isEmojiOnly) { |
| 82 | // Run background-dependent checks against either a solid bg or, if the |
| 83 | // ancestor is a gradient, against every gradient stop (use the worst case). |
| 84 | const bgs = effectiveBg ? [effectiveBg] : (effectiveBgStops && effectiveBgStops.length ? effectiveBgStops : null); |
| 85 | if (bgs) { |
| 86 | // Gray on colored background — flag if every stop is chromatic |
| 87 | const textLum = relativeLuminance(textColor); |
| 88 | const isGray = !hasChroma(textColor, 20) && textLum > 0.05 && textLum < 0.85; |
| 89 | if (isGray && bgs.every(b => hasChroma(b, 40))) { |
| 90 | const bgLabel = effectiveBg ? colorToHex(effectiveBg) : `gradient(${bgs.map(colorToHex).join(', ')})`; |
| 91 | findings.push({ id: 'gray-on-color', snippet: `text ${colorToHex(textColor)} on bg ${bgLabel}` }); |
| 92 | } |
| 93 | |
| 94 | // Low contrast (WCAG AA) — worst case across all bg stops |
| 95 | const ratios = bgs.map(b => contrastRatio(textColor, b)); |
| 96 | let worstIdx = 0; |
| 97 | for (let i = 1; i < ratios.length; i++) if (ratios[i] < ratios[worstIdx]) worstIdx = i; |
| 98 | const ratio = ratios[worstIdx]; |
| 99 | const isLargeText = fontSize >= WCAG_LARGE_TEXT_PX || (fontSize >= WCAG_LARGE_BOLD_TEXT_PX && fontWeight >= 700); |
| 100 | const threshold = isLargeText ? 3.0 : 4.5; |
| 101 | if (ratio < threshold) { |
| 102 | // Skip the false-positive class where text has alpha < 1 AND we |
| 103 | // couldn't find an opaque ancestor (effectiveBg is null, we're |
| 104 | // comparing against gradient-stop fallback). In jsdom mode the |
| 105 | // detector can't resolve `var(--X)` color tokens, so a dark |
| 106 | // section sitting between the text and the body's decorative |
| 107 | // gradient is invisible to us — we end up measuring contrast |
| 108 | // against the body's paper-grain noise instead of the real |
| 109 | // local bg. Real low-contrast bugs use alpha=1 and have a |
| 110 | // resolvable opaque ancestor; semi-transparent Tailwind tokens |
| 111 | // like `text-paper/60` on `bg-ink` sections are the FP pattern. |
| 112 | const isAlphaFallbackFP = !DETECTOR_IS_BROWSER && !effectiveBg && (textColor.a != null && textColor.a < 1); |
| 113 | if (!isAlphaFallbackFP) { |
| 114 | findings.push({ id: 'low-contrast', snippet: `${ratio.toFixed(1)}:1 (need ${threshold}:1) — text ${colorToHex(textColor)} on ${colorToHex(bgs[worstIdx])}` }); |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | // AI palette: purple/violet on headings |
| 120 | if (hasChroma(textColor, 50)) { |
| 121 | const hue = getHue(textColor); |
| 122 | if (hue >= 260 && hue <= 310 && (['h1', 'h2', 'h3'].includes(tag) || fontSize >= 20)) { |
| 123 | findings.push({ id: 'ai-color-palette', snippet: `Purple/violet text (${colorToHex(textColor)}) on heading` }); |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | // Gradient text |
| 129 | if (bgClip === 'text' && bgImage && bgImage.includes('gradient')) { |
| 130 | findings.push({ id: 'gradient-text', snippet: 'background-clip: text + gradient' }); |
| 131 | } |
| 132 | |
| 133 | // Tailwind class checks |
| 134 | if (classList) { |
| 135 | const classStr = typeof classList === 'string' ? classList : Array.from(classList).join(' '); |
| 136 | |
| 137 | const grayMatch = classStr.match(/\btext-(?:gray|slate|zinc|neutral|stone)-\d+\b/); |
| 138 | const colorBgMatch = classStr.match(/\bbg-(?:red|orange|amber|yellow|lime|green|emerald|teal|cyan|sky|blue|indigo|violet|purple|fuchsia|pink|rose)-\d+\b/); |
| 139 | if (grayMatch && colorBgMatch) { |
| 140 | findings.push({ id: 'gray-on-color', snippet: `${grayMatch[0]} on ${colorBgMatch[0]}` }); |
| 141 | } |
| 142 | |
| 143 | if (/\bbg-clip-text\b/.test(classStr) && /\bbg-gradient-to-/.test(classStr)) { |
| 144 | findings.push({ id: 'gradient-text', snippet: 'bg-clip-text + bg-gradient (Tailwind)' }); |
| 145 | } |
| 146 | |
| 147 | const purpleText = classStr.match(/\btext-(?:purple|violet|indigo)-\d+\b/); |
| 148 | if (purpleText && (['h1', 'h2', 'h3'].includes(tag) || /\btext-(?:[2-9]xl)\b/.test(classStr))) { |
| 149 | findings.push({ id: 'ai-color-palette', snippet: `${purpleText[0]} on heading` }); |
| 150 | } |
| 151 | |
| 152 | if (/\bfrom-(?:purple|violet|indigo)-\d+\b/.test(classStr) && /\bto-(?:purple|violet|indigo|blue|cyan|pink|fuchsia)-\d+\b/.test(classStr)) { |
| 153 | findings.push({ id: 'ai-color-palette', snippet: 'Purple/violet gradient (Tailwind)' }); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | return findings; |
| 158 | } |
| 159 | |
| 160 | function isCardLikeFromProps(hasShadow, hasBorder, hasRadius, hasBg) { |
| 161 | if (!hasShadow && !hasBorder) return false; |
| 162 | return hasRadius || hasBg; |
| 163 | } |
| 164 | |
| 165 | const HEADING_TAGS = new Set(['h1', 'h2', 'h3', 'h4', 'h5', 'h6']); |
| 166 | |
| 167 | // Pure check: given a heading and metrics about its previousElementSibling, |
| 168 | // decide if the sibling is the canonical "icon-tile-stacked-above-heading" shape. |
| 169 | // |
| 170 | // Triggers when ALL of the following hold for the sibling: |
| 171 | // • size 32–128px on both axes (not too small, not a hero image) |
| 172 | // • aspect ratio 0.7–1.4 (squarish — excludes wide thumbnails / pill badges) |
| 173 | // • has a non-transparent background-color, background-image, OR a visible border |
| 174 | // (covers solid colors, white-with-border, gradients — anything that visually |
| 175 | // defines a tile) |
| 176 | // • border-radius < width/2 (excludes round avatars; rounded squares pass) |
| 177 | // • contains an <svg> or icon-class <i> element that's smaller than the tile |
| 178 | // • the tile sits above the heading (its bottom is above the heading's top) |
| 179 | function checkIconTile(opts) { |
| 180 | const { headingTag, headingText, headingTop, |
| 181 | siblingTag, siblingWidth, siblingHeight, siblingBottom, |
| 182 | siblingBgColor, siblingBgImage, siblingBorderWidth, siblingBorderRadius, |
| 183 | hasIconChild, iconChildWidth } = opts; |
| 184 | if (!HEADING_TAGS.has(headingTag)) return []; |
| 185 | if (!siblingTag) return []; |
| 186 | // Don't recurse into nested headings (e.g. h2 above h3 in a section header) |
| 187 | if (HEADING_TAGS.has(siblingTag)) return []; |
| 188 | |
| 189 | // Size window: 32–128px on each axis |
| 190 | if (!(siblingWidth >= 32 && siblingWidth <= 128)) return []; |
| 191 | if (!(siblingHeight >= 32 && siblingHeight <= 128)) return []; |
| 192 | |
| 193 | // Squarish aspect ratio |
| 194 | const ratio = siblingWidth / siblingHeight; |
| 195 | if (ratio < 0.7 || ratio > 1.4) return []; |
| 196 | |
| 197 | // Must have something that visually defines the tile |
| 198 | const bgVisible = (siblingBgColor && siblingBgColor.a > 0.1) |
| 199 | || (siblingBgImage && siblingBgImage !== 'none' && siblingBgImage !== ''); |
| 200 | const borderVisible = siblingBorderWidth > 0; |
| 201 | if (!bgVisible && !borderVisible) return []; |
| 202 | |
| 203 | // Exclude circles (avatars). Rounded squares pass. |
| 204 | if (siblingBorderRadius >= siblingWidth / 2) return []; |
| 205 | |
| 206 | // Must contain an icon element smaller than the tile |
| 207 | if (!hasIconChild) return []; |
| 208 | if (iconChildWidth && iconChildWidth >= siblingWidth * 0.95) return []; |
| 209 | |
| 210 | // Vertical stacking: tile must end above where the heading starts. |
| 211 | // (Allow the check to skip when both top/bottom are 0 — jsdom layout case.) |
| 212 | if (headingTop && siblingBottom && siblingBottom > headingTop + 4) return []; |
| 213 | |
| 214 | const text = (headingText || '').trim().slice(0, 60); |
| 215 | return [{ |
| 216 | id: 'icon-tile-stack', |
| 217 | snippet: `${Math.round(siblingWidth)}x${Math.round(siblingHeight)}px icon tile above ${headingTag} "${text}"`, |
| 218 | }]; |
| 219 | } |
| 220 | |
| 221 | // Resolve the primary (non-generic) face from a font-family string and return |
| 222 | // whether the resolved primary is serif. Two paths: |
| 223 | // 1. Primary face is in KNOWN_SERIF_FONTS → serif. |
| 224 | // 2. Primary face is unknown but the stack ends in the generic `serif` |
| 225 | // token → treat as serif. Authors who declare `font-family: 'X', serif` |
| 226 | // almost always have a serif primary; a sans declared with a serif |
| 227 | // fallback is a code smell, not the common case. |
| 228 | // Returns { primary, isSerif } so the snippet can name the face. |
| 229 | function resolveSerif(fontFamily) { |
| 230 | if (!fontFamily) return { primary: null, isSerif: false }; |
| 231 | const tokens = fontFamily.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase()); |
| 232 | const primary = tokens.find(f => f && !GENERIC_FONTS.has(f)) || null; |
| 233 | if (!primary) return { primary: null, isSerif: false }; |
| 234 | if (KNOWN_SERIF_FONTS.has(primary)) return { primary, isSerif: true }; |
| 235 | if (tokens.includes('serif')) return { primary, isSerif: true }; |
| 236 | return { primary, isSerif: false }; |
| 237 | } |
| 238 | |
| 239 | function checkItalicSerif(opts) { |
| 240 | const { tag, fontStyle, fontFamily, fontSize, headingText } = opts; |
| 241 | if (fontStyle !== 'italic') return []; |
| 242 | // Anchor the rule on hero-scale text. h1 is the canonical hero element; |
| 243 | // h2 ≥ 48px catches the cases where the design demotes the visual hero |
| 244 | // to an h2 but keeps the size. |
| 245 | if (tag !== 'h1' && !(tag === 'h2' && fontSize >= 48)) return []; |
| 246 | if (fontSize < 48) return []; |
| 247 | const { primary, isSerif } = resolveSerif(fontFamily); |
| 248 | if (!isSerif) return []; |
| 249 | |
| 250 | const text = (headingText || '').trim().slice(0, 60); |
| 251 | return [{ |
| 252 | id: 'italic-serif-display', |
| 253 | snippet: `italic serif ${tag} (${primary || 'serif'}) at ${Math.round(fontSize)}px "${text}"`, |
| 254 | }]; |
| 255 | } |
| 256 | |
| 257 | // Color saturation check. Returns true when the color has visible |
| 258 | // chroma — i.e., it's an "accent color" rather than near-neutral. |
| 259 | // Handles rgb()/rgba(), #hex, oklch(), and hsl(). var() refs are |
| 260 | // expected to be pre-resolved by the caller. |
| 261 | function isAccentColor(cssColor) { |
| 262 | if (!cssColor) return false; |
| 263 | const s = String(cssColor).trim(); |
| 264 | // rgb / rgba — direct channel-distance check. |
| 265 | const rgbM = /rgba?\(\s*(\d+)\s*,?\s+|\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(s.replace(/rgba?\(\s*/, 'rgb(').replace(/,/g, ', ')); |
| 266 | const rgbStrict = /rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(s); |
| 267 | if (rgbStrict) { |
| 268 | const r = +rgbStrict[1], g = +rgbStrict[2], b = +rgbStrict[3]; |
| 269 | return (Math.max(r, g, b) - Math.min(r, g, b)) >= 40; |
| 270 | } |
| 271 | // #hex — 3, 4, 6, or 8 digit. |
| 272 | const hexM = /^#([0-9a-f]{3,8})\b/i.exec(s); |
| 273 | if (hexM) { |
| 274 | let h = hexM[1]; |
| 275 | if (h.length === 3 || h.length === 4) h = h.split('').map((c) => c + c).join('').slice(0, 6); |
| 276 | else h = h.slice(0, 6); |
| 277 | if (h.length === 6) { |
| 278 | const r = parseInt(h.slice(0, 2), 16); |
| 279 | const g = parseInt(h.slice(2, 4), 16); |
| 280 | const b = parseInt(h.slice(4, 6), 16); |
| 281 | return (Math.max(r, g, b) - Math.min(r, g, b)) >= 40; |
| 282 | } |
| 283 | } |
| 284 | // oklch(L C H) — chroma C is what matters. Typical neutral grays |
| 285 | // have C < 0.02; visible accents are 0.05+. CSS minification can |
| 286 | // collapse spaces between L% and C ("oklch(43%.15 34)"), so we |
| 287 | // extract all numbers and take the second rather than matching a |
| 288 | // strict L-then-whitespace-then-C pattern. |
| 289 | if (/^oklch\(/i.test(s)) { |
| 290 | const nums = s.match(/\d*\.\d+|\d+/g); |
| 291 | if (nums && nums.length >= 2) { |
| 292 | const c = parseFloat(nums[1]); |
| 293 | return !Number.isNaN(c) && c >= 0.05; |
| 294 | } |
| 295 | } |
| 296 | // hsl(H, S%, L%) — saturation > 20% reads as accent. |
| 297 | const hslM = /hsla?\(\s*[\d.]+\s*,\s*([\d.]+)%/i.exec(s); |
| 298 | if (hslM) { |
| 299 | const sat = parseFloat(hslM[1]); |
| 300 | return !Number.isNaN(sat) && sat >= 20; |
| 301 | } |
| 302 | return false; |
| 303 | } |
| 304 | |
| 305 | // Sibling-relationship rule. Anchor on a hero-scale h1, look at the |
| 306 | // previousElementSibling, and gate on EITHER the classic tracked- |
| 307 | // uppercase eyebrow OR the modern accent-colored bold eyebrow. |
| 308 | function checkHeroEyebrow(opts) { |
| 309 | const { |
| 310 | headingTag, headingText, headingFontSize, |
| 311 | siblingTag, siblingText, siblingTextTransform, |
| 312 | siblingFontSize, siblingLetterSpacing, |
| 313 | siblingFontWeight, siblingColor, |
| 314 | } = opts; |
| 315 | if (headingTag !== 'h1') return []; |
| 316 | // We previously gated on headingFontSize >= 48 to anchor "hero scale". |
| 317 | // But modern hero h1s use clamp() / vw / var(--text-*), none of which |
| 318 | // jsdom can resolve — the computed value comes back as "2em" or |
| 319 | // "var(--text-9xl)" and parseFloat returns 2 or NaN. The gate fails |
| 320 | // on virtually every Tailwind v4 / framework build. The other gates |
| 321 | // (sibling text 2-60 chars, font-size ≤ 14px, accent-bold OR |
| 322 | // tracked-caps) are tight enough to avoid false positives on non- |
| 323 | // hero h1s — a tiny tan label directly above any h1 is the |
| 324 | // antipattern regardless of how big the h1 ends up. |
| 325 | if (!siblingTag) return []; |
| 326 | // An h2 above an h1 is a different anti-pattern (heading hierarchy / dual |
| 327 | // headings) — never an eyebrow. |
| 328 | if (HEADING_TAGS.has(siblingTag)) return []; |
| 329 | |
| 330 | const text = (siblingText || '').trim(); |
| 331 | if (text.length < 2 || text.length > 60) return []; |
| 332 | if (!(siblingFontSize > 0 && siblingFontSize <= 14)) return []; |
| 333 | |
| 334 | // Branch A: classic tracked-uppercase eyebrow. |
| 335 | const isUppercased = siblingTextTransform === 'uppercase' |
| 336 | || (/[A-Z]/.test(text) && !/[a-z]/.test(text)); |
| 337 | const isClassicTracked = isUppercased && siblingLetterSpacing >= 1.6; |
| 338 | |
| 339 | // Branch B: modern accent-bold eyebrow — sentence case, low |
| 340 | // tracking, but bold + accent-colored. The style choices changed; |
| 341 | // the pattern is the same kicker-above-headline anti-pattern. |
| 342 | const weight = Number(siblingFontWeight) || 400; |
| 343 | const isAccentBold = weight >= 700 && isAccentColor(siblingColor || ''); |
| 344 | |
| 345 | if (!isClassicTracked && !isAccentBold) return []; |
| 346 | |
| 347 | const headingTextSnippet = (headingText || '').trim().slice(0, 60); |
| 348 | const eyebrowSnippet = text.slice(0, 40); |
| 349 | const style = isClassicTracked ? 'tracked-caps' : 'accent-bold'; |
| 350 | return [{ |
| 351 | id: 'hero-eyebrow-chip', |
| 352 | snippet: `eyebrow chip (${style}) "${eyebrowSnippet}" above ${headingTag} "${headingTextSnippet}"`, |
| 353 | }]; |
| 354 | } |
| 355 | |
| 356 | function checkRepeatedSectionKickers(opts) { |
| 357 | const { candidates, minCount = 3 } = opts; |
| 358 | if (!Array.isArray(candidates) || candidates.length < minCount) return []; |
| 359 | return candidates.map(candidate => ({ |
| 360 | id: 'repeated-section-kickers', |
| 361 | snippet: `repeated section kicker "${candidate.kickerText}" before ${candidate.headingTag} "${candidate.headingText}" (${candidates.length} on page)`, |
| 362 | })); |
| 363 | } |
| 364 | |
| 365 | const LAYOUT_TRANSITION_PROPS = new Set([ |
| 366 | 'width', 'height', 'padding', 'margin', |
| 367 | 'max-height', 'max-width', 'min-height', 'min-width', |
| 368 | 'padding-top', 'padding-right', 'padding-bottom', 'padding-left', |
| 369 | 'margin-top', 'margin-right', 'margin-bottom', 'margin-left', |
| 370 | ]); |
| 371 | |
| 372 | function checkMotion(opts) { |
| 373 | const { tag, transitionProperty, animationName, timingFunctions, classList } = opts; |
| 374 | if (SAFE_TAGS.has(tag)) return []; |
| 375 | const findings = []; |
| 376 | |
| 377 | // --- Bounce/elastic easing --- |
| 378 | if (animationName && animationName !== 'none' && /bounce|elastic|wobble|jiggle|spring/i.test(animationName)) { |
| 379 | findings.push({ id: 'bounce-easing', snippet: `animation: ${animationName}` }); |
| 380 | } |
| 381 | if (classList && /\banimate-bounce\b/.test(classList)) { |
| 382 | findings.push({ id: 'bounce-easing', snippet: 'animate-bounce (Tailwind)' }); |
| 383 | } |
| 384 | |
| 385 | // Check timing functions for overshoot cubic-bezier (y values outside [0, 1]) |
| 386 | if (timingFunctions) { |
| 387 | const bezierRe = /cubic-bezier\(\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*\)/g; |
| 388 | let m; |
| 389 | while ((m = bezierRe.exec(timingFunctions)) !== null) { |
| 390 | const y1 = parseFloat(m[2]), y2 = parseFloat(m[4]); |
| 391 | if (y1 < -0.1 || y1 > 1.1 || y2 < -0.1 || y2 > 1.1) { |
| 392 | findings.push({ id: 'bounce-easing', snippet: `cubic-bezier(${m[1]}, ${m[2]}, ${m[3]}, ${m[4]})` }); |
| 393 | break; |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | // --- Layout property transition --- |
| 399 | if (transitionProperty && transitionProperty !== 'all' && transitionProperty !== 'none') { |
| 400 | const props = transitionProperty.split(',').map(p => p.trim().toLowerCase()); |
| 401 | const layoutFound = props.filter(p => LAYOUT_TRANSITION_PROPS.has(p)); |
| 402 | if (layoutFound.length > 0) { |
| 403 | findings.push({ id: 'layout-transition', snippet: `transition: ${layoutFound.join(', ')}` }); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | return findings; |
| 408 | } |
| 409 | |
| 410 | function checkGlow(opts) { |
| 411 | const { boxShadow, effectiveBg } = opts; |
| 412 | if (!boxShadow || boxShadow === 'none') return []; |
| 413 | if (!effectiveBg) return []; |
| 414 | |
| 415 | // Only flag on dark backgrounds (luminance < 0.1) |
| 416 | const bgLum = relativeLuminance(effectiveBg); |
| 417 | if (bgLum >= 0.1) return []; |
| 418 | |
| 419 | // Split multiple shadows (commas not inside parentheses) |
| 420 | const parts = boxShadow.split(/,(?![^(]*\))/); |
| 421 | for (const shadow of parts) { |
| 422 | const colorMatch = shadow.match(/rgba?\([^)]+\)/); |
| 423 | if (!colorMatch) continue; |
| 424 | const color = parseRgb(colorMatch[0]); |
| 425 | if (!color || !hasChroma(color, 30)) continue; |
| 426 | |
| 427 | // Extract px values — in computed style: "color Xpx Ypx BLURpx [SPREADpx]" |
| 428 | const afterColor = shadow.substring(shadow.indexOf(colorMatch[0]) + colorMatch[0].length); |
| 429 | const beforeColor = shadow.substring(0, shadow.indexOf(colorMatch[0])); |
| 430 | const pxVals = [...beforeColor.matchAll(/([\d.]+)px/g), ...afterColor.matchAll(/([\d.]+)px/g)] |
| 431 | .map(m => parseFloat(m[1])); |
| 432 | |
| 433 | // Third value is blur (offset-x, offset-y, blur, [spread]) |
| 434 | if (pxVals.length >= 3 && pxVals[2] > 4) { |
| 435 | return [{ id: 'dark-glow', snippet: `Colored glow (${colorToHex(color)}) on dark background` }]; |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | return []; |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * Regex-on-HTML checks shared between browser and Node page-level detection. |
| 444 | * These don't need DOM access, just the raw HTML string. |
| 445 | */ |
| 446 | function checkHtmlPatterns(html) { |
| 447 | const findings = []; |
| 448 | |
| 449 | // --- Color --- |
| 450 | |
| 451 | // AI color palette: purple/violet |
| 452 | const purpleHexRe = /#(?:7c3aed|8b5cf6|a855f7|9333ea|7e22ce|6d28d9|6366f1|764ba2|667eea)\b/gi; |
| 453 | if (purpleHexRe.test(html)) { |
| 454 | const purpleTextRe = /(?:(?:^|;)\s*color\s*:\s*(?:.*?)(?:#(?:7c3aed|8b5cf6|a855f7|9333ea|7e22ce|6d28d9))|gradient.*?#(?:7c3aed|8b5cf6|a855f7|764ba2|667eea))/gi; |
| 455 | if (purpleTextRe.test(html)) { |
| 456 | findings.push({ id: 'ai-color-palette', snippet: 'Purple/violet accent colors detected' }); |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | // Gradient text (background-clip: text + gradient) |
| 461 | const gradientRe = /(?:-webkit-)?background-clip\s*:\s*text/gi; |
| 462 | let gm; |
| 463 | while ((gm = gradientRe.exec(html)) !== null) { |
| 464 | const start = Math.max(0, gm.index - 200); |
| 465 | const context = html.substring(start, gm.index + gm[0].length + 200); |
| 466 | if (/gradient/i.test(context)) { |
| 467 | findings.push({ id: 'gradient-text', snippet: 'background-clip: text + gradient' }); |
| 468 | break; |
| 469 | } |
| 470 | } |
| 471 | if (/\bbg-clip-text\b/.test(html) && /\bbg-gradient-to-/.test(html)) { |
| 472 | findings.push({ id: 'gradient-text', snippet: 'bg-clip-text + bg-gradient (Tailwind)' }); |
| 473 | } |
| 474 | |
| 475 | // --- Layout --- |
| 476 | |
| 477 | // Monotonous spacing |
| 478 | const spacingValues = []; |
| 479 | const spacingRe = /(?:padding|margin)(?:-(?:top|right|bottom|left))?\s*:\s*(\d+)px/gi; |
| 480 | let sm; |
| 481 | while ((sm = spacingRe.exec(html)) !== null) { |
| 482 | const v = parseInt(sm[1], 10); |
| 483 | if (v > 0 && v < 200) spacingValues.push(v); |
| 484 | } |
| 485 | const gapRe = /gap\s*:\s*(\d+)px/gi; |
| 486 | while ((sm = gapRe.exec(html)) !== null) { |
| 487 | spacingValues.push(parseInt(sm[1], 10)); |
| 488 | } |
| 489 | const twSpaceRe = /\b(?:p|px|py|pt|pb|pl|pr|m|mx|my|mt|mb|ml|mr|gap)-(\d+)\b/g; |
| 490 | while ((sm = twSpaceRe.exec(html)) !== null) { |
| 491 | spacingValues.push(parseInt(sm[1], 10) * 4); |
| 492 | } |
| 493 | const remSpacingRe = /(?:padding|margin)(?:-(?:top|right|bottom|left))?\s*:\s*([\d.]+)rem/gi; |
| 494 | while ((sm = remSpacingRe.exec(html)) !== null) { |
| 495 | const v = Math.round(parseFloat(sm[1]) * 16); |
| 496 | if (v > 0 && v < 200) spacingValues.push(v); |
| 497 | } |
| 498 | const roundedSpacing = spacingValues.map(v => Math.round(v / 4) * 4); |
| 499 | if (roundedSpacing.length >= 10) { |
| 500 | const counts = {}; |
| 501 | for (const v of roundedSpacing) counts[v] = (counts[v] || 0) + 1; |
| 502 | const maxCount = Math.max(...Object.values(counts)); |
| 503 | const dominantPct = maxCount / roundedSpacing.length; |
| 504 | const unique = [...new Set(roundedSpacing)].filter(v => v > 0); |
| 505 | if (dominantPct > 0.6 && unique.length <= 3) { |
| 506 | const dominant = Object.entries(counts).sort((a, b) => b[1] - a[1])[0][0]; |
| 507 | findings.push({ |
| 508 | id: 'monotonous-spacing', |
| 509 | snippet: `~${dominant}px used ${maxCount}/${roundedSpacing.length} times (${Math.round(dominantPct * 100)}%)`, |
| 510 | }); |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | // --- Motion --- |
| 515 | |
| 516 | // Bounce/elastic animation names |
| 517 | const bounceRe = /animation(?:-name)?\s*:\s*[^;]*\b(bounce|elastic|wobble|jiggle|spring)\b/gi; |
| 518 | if (bounceRe.test(html)) { |
| 519 | findings.push({ id: 'bounce-easing', snippet: 'Bounce/elastic animation in CSS' }); |
| 520 | } |
| 521 | |
| 522 | // Overshoot cubic-bezier |
| 523 | const bezierRe = /cubic-bezier\(\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*,\s*([\d.-]+)\s*\)/g; |
| 524 | let bm; |
| 525 | while ((bm = bezierRe.exec(html)) !== null) { |
| 526 | const y1 = parseFloat(bm[2]), y2 = parseFloat(bm[4]); |
| 527 | if (y1 < -0.1 || y1 > 1.1 || y2 < -0.1 || y2 > 1.1) { |
| 528 | findings.push({ id: 'bounce-easing', snippet: `cubic-bezier(${bm[1]}, ${bm[2]}, ${bm[3]}, ${bm[4]})` }); |
| 529 | break; |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | // Layout property transitions |
| 534 | const transRe = /transition(?:-property)?\s*:\s*([^;{}]+)/gi; |
| 535 | let tm; |
| 536 | while ((tm = transRe.exec(html)) !== null) { |
| 537 | const val = tm[1].toLowerCase(); |
| 538 | if (/\ball\b/.test(val)) continue; |
| 539 | const found = val.match(/\b(?:(?:max|min)-)?(?:width|height)\b|\bpadding(?:-(?:top|right|bottom|left))?\b|\bmargin(?:-(?:top|right|bottom|left))?\b/gi); |
| 540 | if (found) { |
| 541 | findings.push({ id: 'layout-transition', snippet: `transition: ${found.join(', ')}` }); |
| 542 | break; |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | // --- Dark glow --- |
| 547 | |
| 548 | 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\(\s*(\d{1,2})\s*,\s*(\d{1,2})\s*,\s*(\d{1,2})\s*\))/gi; |
| 549 | const twDarkBg = /\bbg-(?:gray|slate|zinc|neutral|stone)-(?:9\d{2}|800)\b/; |
| 550 | if (darkBgRe.test(html) || twDarkBg.test(html)) { |
| 551 | const shadowRe = /box-shadow\s*:\s*([^;{}]+)/gi; |
| 552 | let shm; |
| 553 | while ((shm = shadowRe.exec(html)) !== null) { |
| 554 | const val = shm[1]; |
| 555 | const colorMatch = val.match(/rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/); |
| 556 | if (!colorMatch) continue; |
| 557 | const [r, g, b] = [+colorMatch[1], +colorMatch[2], +colorMatch[3]]; |
| 558 | if ((Math.max(r, g, b) - Math.min(r, g, b)) < 30) continue; |
| 559 | const pxVals = [...val.matchAll(/(\d+)px|(?<![.\d])\b(0)\b(?![.\d])/g)].map(p => +(p[1] || p[2])); |
| 560 | if (pxVals.length >= 3 && pxVals[2] > 4) { |
| 561 | findings.push({ id: 'dark-glow', snippet: `Colored glow (rgb(${r},${g},${b})) on dark page` }); |
| 562 | break; |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | // --- Provider tells (gated): repeating-gradient stripes (GPT) --- |
| 568 | if (/repeating-(?:linear|radial|conic)-gradient\s*\(/i.test(html)) { |
| 569 | findings.push({ id: 'repeating-stripes-gradient', snippet: 'repeating-gradient decorative stripes' }); |
| 570 | } |
| 571 | |
| 572 | // --- Provider tells (gated): "X theater" framing copy (GPT) --- |
| 573 | // Lives here (regex-on-HTML) rather than in the text-content analyzers so it |
| 574 | // runs in the bundled browser path too, not just the CLI/static path. |
| 575 | { |
| 576 | const bodyText = html |
| 577 | .replace(/<script\b[^>]*>[\s\S]*?<\/script>/gi, ' ') |
| 578 | .replace(/<style\b[^>]*>[\s\S]*?<\/style>/gi, ' ') |
| 579 | .replace(/<[^>]+>/g, ' '); |
| 580 | const tm = /\b(\w+)\s+theater\b/i.exec(bodyText); |
| 581 | if (tm) findings.push({ id: 'theater-slop-phrase', snippet: `"${tm[0].trim()}"` }); |
| 582 | } |
| 583 | |
| 584 | // --- Provider tells (gated): image hover transform (Gemini) --- |
| 585 | // A CSS `img...:hover { transform: ... }` rule, or a Tailwind hover:scale / |
| 586 | // hover:rotate / hover:translate utility on an <img>. Each distinct |
| 587 | // mechanism is its own finding. |
| 588 | const imgHoverCss = /\bimg\b[^,{}]*:hover\b[^{}]*\{[^}]*\btransform\s*:\s*(?:scale|rotate|translate|matrix|skew)/i; |
| 589 | if (imgHoverCss.test(html)) { |
| 590 | findings.push({ id: 'image-hover-transform', snippet: 'img:hover { transform } rule' }); |
| 591 | } |
| 592 | const imgTagRe = /<img\b[^>]*\bclass\s*=\s*"([^"]*)"/gi; |
| 593 | let im; |
| 594 | while ((im = imgTagRe.exec(html)) !== null) { |
| 595 | if (/\bhover:(?:scale|rotate|translate|skew)-/.test(im[1])) { |
| 596 | findings.push({ id: 'image-hover-transform', snippet: 'Tailwind hover transform on <img>' }); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | return findings; |
| 601 | } |
| 602 | |
| 603 | // ─── Section 4: resolveBackground (unified) ───────────────────────────────── |
| 604 | |
| 605 | // Read the element's own background color, computed-style first, with a |
| 606 | // jsdom-friendly fallback that parses the inline `background:` shorthand |
| 607 | // from the raw style attribute. jsdom (~v29) does not decompose the |
| 608 | // shorthand into `backgroundColor`, so without this fallback the CLI silently |
| 609 | // returns null for any element styled via `background: rgb(...)` or |
| 610 | // `background: #abc`. Real browsers always decompose, so the fallback is |
| 611 | // a no-op there. |
| 612 | function readOwnBackgroundColor(el, computedStyle) { |
| 613 | const bg = parseRgb(computedStyle.backgroundColor); |
| 614 | if (DETECTOR_IS_BROWSER || (bg && bg.a >= 0.1)) return bg; |
| 615 | const rawStyle = el.getAttribute?.('style') || ''; |
| 616 | const bgMatch = rawStyle.match(/background(?:-color)?\s*:\s*([^;]+)/i); |
| 617 | const inlineBg = bgMatch ? bgMatch[1].trim() : ''; |
| 618 | if (!inlineBg) return bg; |
| 619 | if (/gradient/i.test(inlineBg) || /url\s*\(/i.test(inlineBg)) return bg; |
| 620 | const fromRgb = parseRgb(inlineBg); |
| 621 | if (fromRgb) return fromRgb; |
| 622 | const hexMatch = inlineBg.match(/#([0-9a-f]{6}|[0-9a-f]{3})\b/i); |
| 623 | if (hexMatch) { |
| 624 | const h = hexMatch[1]; |
| 625 | if (h.length === 6) { |
| 626 | return { r: parseInt(h.slice(0, 2), 16), g: parseInt(h.slice(2, 4), 16), b: parseInt(h.slice(4, 6), 16), a: 1 }; |
| 627 | } |
| 628 | return { r: parseInt(h[0] + h[0], 16), g: parseInt(h[1] + h[1], 16), b: parseInt(h[2] + h[2], 16), a: 1 }; |
| 629 | } |
| 630 | return bg; |
| 631 | } |
| 632 | |
| 633 | function resolveBackground(el, win, customPropMap) { |
| 634 | let current = el; |
| 635 | while (current && current.nodeType === 1) { |
| 636 | const style = DETECTOR_IS_BROWSER ? getComputedStyle(current) : win.getComputedStyle(current); |
| 637 | const bgImage = style.backgroundImage || ''; |
| 638 | const hasGradientOrUrl = bgImage && bgImage !== 'none' && (/gradient/i.test(bgImage) || /url\s*\(/i.test(bgImage)); |
| 639 | |
| 640 | // Try the solid bg-color FIRST. If the element has both a solid color |
| 641 | // and a gradient/url overlay (a common pattern: `background: var(--paper) |
| 642 | // radial-gradient(...)` for paper-grain texture), the solid color is the |
| 643 | // dominant visible surface for contrast purposes; the overlay is |
| 644 | // decorative. The old behavior bailed on any gradient ancestor, which |
| 645 | // caused massive false-positive contrast findings on grain-textured |
| 646 | // body backgrounds. |
| 647 | let bg = parseRgb(style.backgroundColor); |
| 648 | if (!DETECTOR_IS_BROWSER && (!bg || bg.a < 0.1)) { |
| 649 | // jsdom returns literal "var(--X)" / "oklch(...)" strings. Resolve |
| 650 | // through customPropMap so Tailwind v4 color tokens become RGB. |
| 651 | if (customPropMap) { |
| 652 | bg = parseColorResolved(style.backgroundColor, customPropMap); |
| 653 | } |
| 654 | if (!bg || bg.a < 0.1) { |
| 655 | // Inline-style fallback. jsdom doesn't decompose background |
| 656 | // shorthand, so colors set via inline style are otherwise invisible. |
| 657 | const rawStyle = current.getAttribute?.('style') || ''; |
| 658 | const bgMatch = rawStyle.match(/background(?:-color)?\s*:\s*([^;]+)/i); |
| 659 | const inlineBg = bgMatch ? bgMatch[1].trim() : ''; |
| 660 | if (inlineBg && !/gradient/i.test(inlineBg) && !/url\s*\(/i.test(inlineBg)) { |
| 661 | bg = parseColorResolved(inlineBg, customPropMap) || parseAnyColor(inlineBg); |
| 662 | } |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | if (bg && bg.a > 0.1) { |
| 667 | if (DETECTOR_IS_BROWSER || bg.a >= 0.5) return bg; |
| 668 | } |
| 669 | // No solid bg-color at this level. If THIS level has a gradient/url |
| 670 | // with no underlying solid color we can read: |
| 671 | // • on body/html: assume white. Body-level gradients are almost |
| 672 | // always decorative texture (paper grain, noise) on top of a |
| 673 | // solid bg-color the page set via `background: var(--paper)` |
| 674 | // shorthand — which jsdom can't decompose into bg-color. The |
| 675 | // downstream gradient-stops fallback path produces catastrophic |
| 676 | // false positives in this case (gradient noise stops have |
| 677 | // accidental browns/blacks that look like card backgrounds). |
| 678 | // • on other elements: bail to null and let the caller fall back |
| 679 | // to gradient stops (gradient buttons / hero sections are real |
| 680 | // bgs worth checking against). |
| 681 | if (hasGradientOrUrl) { |
| 682 | if (current.tagName === 'BODY' || current.tagName === 'HTML') { |
| 683 | return { r: 255, g: 255, b: 255, a: 1 }; |
| 684 | } |
| 685 | return null; |
| 686 | } |
| 687 | current = current.parentElement; |
| 688 | } |
| 689 | return { r: 255, g: 255, b: 255 }; |
| 690 | } |
| 691 | |
| 692 | // Walk parents looking for a gradient background and return its color stops. |
| 693 | // Used as a fallback when resolveBackground() returns null because the |
| 694 | // effective background is a gradient (no single solid color to compare against). |
| 695 | function resolveGradientStops(el, win) { |
| 696 | let current = el; |
| 697 | while (current && current.nodeType === 1) { |
| 698 | const style = DETECTOR_IS_BROWSER ? getComputedStyle(current) : win.getComputedStyle(current); |
| 699 | const bgImage = style.backgroundImage || ''; |
| 700 | if (bgImage && bgImage !== 'none' && /gradient/i.test(bgImage)) { |
| 701 | const stops = parseGradientColors(bgImage); |
| 702 | if (stops.length > 0) return stops; |
| 703 | } |
| 704 | if (!DETECTOR_IS_BROWSER) { |
| 705 | // jsdom doesn't decompose `background:` shorthand — peek at the raw inline style |
| 706 | const rawStyle = current.getAttribute?.('style') || ''; |
| 707 | const bgMatch = rawStyle.match(/background(?:-image)?\s*:\s*([^;]+)/i); |
| 708 | if (bgMatch && /gradient/i.test(bgMatch[1])) { |
| 709 | const stops = parseGradientColors(bgMatch[1]); |
| 710 | if (stops.length > 0) return stops; |
| 711 | } |
| 712 | } |
| 713 | current = current.parentElement; |
| 714 | } |
| 715 | return null; |
| 716 | } |
| 717 | |
| 718 | // Parse a single CSS length token to pixels. Accepts "12px", "50%", a |
| 719 | // shorthand like "12px 4px" (uses the first value), or empty / null. |
| 720 | // Returns the pixel value, or null when the input is unparseable. |
| 721 | // Percentages convert against `widthPx` when one is supplied. Without a |
| 722 | // usable width (jsdom returns "auto" for many real-world elements, |
| 723 | // which parseFloat collapses to 0), fall back to the raw percentage |
| 724 | // number so callers gating on `> 0` (border-accent-on-rounded, |
| 725 | // isCardLike's hasRadius) still see a positive value, matching the |
| 726 | // original parseFloat("50%") === 50 behavior. |
| 727 | function parseRadiusToPx(value, widthPx) { |
| 728 | if (!value || typeof value !== 'string') return null; |
| 729 | const trimmed = value.trim(); |
| 730 | if (!trimmed) return null; |
| 731 | const first = trimmed.split(/\s+/)[0]; |
| 732 | const num = parseFloat(first); |
| 733 | if (Number.isNaN(num)) return null; |
| 734 | if (/%$/.test(first)) { |
| 735 | if (widthPx && widthPx > 0) return (num / 100) * widthPx; |
| 736 | return num; |
| 737 | } |
| 738 | return num; |
| 739 | } |
| 740 | |
| 741 | function resolveBorderRadiusPx(el, style, widthPx, win) { |
| 742 | const fromComputed = parseRadiusToPx(style.borderRadius, widthPx); |
| 743 | if (fromComputed !== null) return fromComputed; |
| 744 | return 0; |
| 745 | } |
| 746 | |
| 747 | // ─── Section 5: Element Adapters ──────────────────────────────────────────── |
| 748 | |
| 749 | // Browser adapters — call getComputedStyle/getBoundingClientRect on live DOM |
| 750 | |
| 751 | function checkElementBordersDOM(el) { |
| 752 | const tag = el.tagName.toLowerCase(); |
| 753 | if (BORDER_SAFE_TAGS.has(tag)) return []; |
| 754 | const rect = el.getBoundingClientRect(); |
| 755 | if (rect.width < 20 || rect.height < 20) return []; |
| 756 | const style = getComputedStyle(el); |
| 757 | const sides = ['Top', 'Right', 'Bottom', 'Left']; |
| 758 | const widths = {}, colors = {}; |
| 759 | for (const s of sides) { |
| 760 | widths[s] = parseFloat(style[`border${s}Width`]) || 0; |
| 761 | colors[s] = style[`border${s}Color`] || ''; |
| 762 | } |
| 763 | return checkBorders(tag, widths, colors, parseFloat(style.borderRadius) || 0); |
| 764 | } |
| 765 | |
| 766 | function checkElementColorsDOM(el) { |
| 767 | const tag = el.tagName.toLowerCase(); |
| 768 | // No early SAFE_TAGS bail here — checkColors() does its own gating that |
| 769 | // includes the styled-button exception for <a> / <button> with their own |
| 770 | // opaque background. Bailing here would prevent that exception from firing. |
| 771 | const rect = el.getBoundingClientRect(); |
| 772 | if (rect.width < 10 || rect.height < 10) return []; |
| 773 | const style = getComputedStyle(el); |
| 774 | const directText = [...el.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join(''); |
| 775 | const hasDirectText = directText.trim().length > 0; |
| 776 | const effectiveBg = resolveBackground(el); |
| 777 | return checkColors({ |
| 778 | tag, |
| 779 | textColor: parseRgb(style.color), |
| 780 | bgColor: readOwnBackgroundColor(el, style), |
| 781 | effectiveBg, |
| 782 | effectiveBgStops: effectiveBg ? null : resolveGradientStops(el), |
| 783 | fontSize: parseFloat(style.fontSize) || 16, |
| 784 | fontWeight: parseInt(style.fontWeight) || 400, |
| 785 | hasDirectText, |
| 786 | isEmojiOnly: isEmojiOnlyText(directText), |
| 787 | bgClip: style.webkitBackgroundClip || style.backgroundClip || '', |
| 788 | bgImage: style.backgroundImage || '', |
| 789 | classList: el.getAttribute('class') || '', |
| 790 | }); |
| 791 | } |
| 792 | |
| 793 | function checkElementIconTileDOM(el) { |
| 794 | const tag = el.tagName.toLowerCase(); |
| 795 | if (!HEADING_TAGS.has(tag)) return []; |
| 796 | const sibling = el.previousElementSibling; |
| 797 | if (!sibling) return []; |
| 798 | |
| 799 | const sibRect = sibling.getBoundingClientRect(); |
| 800 | const headRect = el.getBoundingClientRect(); |
| 801 | const sibStyle = getComputedStyle(sibling); |
| 802 | |
| 803 | // The tile may either contain an <svg>/<i> icon child, OR the tile itself |
| 804 | // may contain an emoji/symbol character directly as its only text content |
| 805 | // (the "card-icon" pattern from many AI-generated demos). |
| 806 | const iconChild = sibling.querySelector('svg, i[data-lucide], i[class*="fa-"], i[class*="icon"]'); |
| 807 | const iconRect = iconChild?.getBoundingClientRect(); |
| 808 | const sibDirectText = [...sibling.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join(''); |
| 809 | const hasInlineEmojiIcon = sibling.children.length === 0 && isEmojiOnlyText(sibDirectText); |
| 810 | |
| 811 | return checkIconTile({ |
| 812 | headingTag: tag, |
| 813 | headingText: el.textContent || '', |
| 814 | headingTop: headRect.top, |
| 815 | siblingTag: sibling.tagName.toLowerCase(), |
| 816 | siblingWidth: sibRect.width, |
| 817 | siblingHeight: sibRect.height, |
| 818 | siblingBottom: sibRect.bottom, |
| 819 | siblingBgColor: parseRgb(sibStyle.backgroundColor), |
| 820 | siblingBgImage: sibStyle.backgroundImage || '', |
| 821 | siblingBorderWidth: parseFloat(sibStyle.borderTopWidth) || 0, |
| 822 | siblingBorderRadius: parseFloat(sibStyle.borderRadius) || 0, |
| 823 | hasIconChild: !!iconChild || hasInlineEmojiIcon, |
| 824 | iconChildWidth: iconRect?.width || 0, |
| 825 | }); |
| 826 | } |
| 827 | |
| 828 | function checkElementItalicSerifDOM(el) { |
| 829 | const tag = el.tagName.toLowerCase(); |
| 830 | if (tag !== 'h1' && tag !== 'h2') return []; |
| 831 | const style = getComputedStyle(el); |
| 832 | return checkItalicSerif({ |
| 833 | tag, |
| 834 | fontStyle: style.fontStyle || '', |
| 835 | fontFamily: style.fontFamily || '', |
| 836 | fontSize: parseFloat(style.fontSize) || 0, |
| 837 | headingText: el.textContent || '', |
| 838 | }); |
| 839 | } |
| 840 | |
| 841 | function checkElementHeroEyebrowDOM(el) { |
| 842 | const tag = el.tagName.toLowerCase(); |
| 843 | if (tag !== 'h1') return []; |
| 844 | const sibling = el.previousElementSibling; |
| 845 | if (!sibling) return []; |
| 846 | const headStyle = getComputedStyle(el); |
| 847 | const sibStyle = getComputedStyle(sibling); |
| 848 | return checkHeroEyebrow({ |
| 849 | headingTag: tag, |
| 850 | headingText: el.textContent || '', |
| 851 | headingFontSize: parseFloat(headStyle.fontSize) || 0, |
| 852 | siblingTag: sibling.tagName.toLowerCase(), |
| 853 | siblingText: sibling.textContent || '', |
| 854 | siblingTextTransform: sibStyle.textTransform || '', |
| 855 | siblingFontSize: parseFloat(sibStyle.fontSize) || 0, |
| 856 | siblingLetterSpacing: parseFloat(sibStyle.letterSpacing) || 0, |
| 857 | siblingFontWeight: sibStyle.fontWeight || '', |
| 858 | siblingColor: sibStyle.color || '', |
| 859 | }); |
| 860 | } |
| 861 | |
| 862 | // Build a map of CSS custom properties declared on :root / :host / html. |
| 863 | // Used to resolve var(--X) refs that jsdom returns verbatim in |
| 864 | // getComputedStyle. Tailwind v4 routes every utility class through |
| 865 | // CSS vars (font-weight: var(--font-weight-bold), font-size: |
| 866 | // var(--text-xs), letter-spacing: var(--tracking-widest)), so without |
| 867 | // resolution every style-based check silently fails on Tailwind v4 |
| 868 | // builds — the values come back as literal "var(--font-weight-bold)" |
| 869 | // strings and parseFloat returns NaN. |
| 870 | function buildCustomPropMap(document) { |
| 871 | const map = new Map(); |
| 872 | let sheets; |
| 873 | try { sheets = Array.from(document.styleSheets || []); } |
| 874 | catch { return map; } |
| 875 | for (const sheet of sheets) { |
| 876 | let rules; |
| 877 | try { rules = Array.from(sheet.cssRules || []); } |
| 878 | catch { continue; } |
| 879 | for (const rule of rules) { |
| 880 | // Style rules only (type 1). Walk @media / @supports if present. |
| 881 | if (rule.type === 4 /* MEDIA_RULE */ || rule.type === 12 /* SUPPORTS_RULE */) { |
| 882 | try { rules.push(...Array.from(rule.cssRules || [])); } catch { /* ignore */ } |
| 883 | continue; |
| 884 | } |
| 885 | if (rule.type !== 1 /* STYLE_RULE */) continue; |
| 886 | const sel = rule.selectorText || ''; |
| 887 | if (!/(^|,\s*)(:root|html|:host)\b/i.test(sel)) continue; |
| 888 | const style = rule.style; |
| 889 | if (!style) continue; |
| 890 | for (let i = 0; i < style.length; i++) { |
| 891 | const prop = style[i]; |
| 892 | if (!prop || !prop.startsWith('--')) continue; |
| 893 | const val = style.getPropertyValue(prop).trim(); |
| 894 | if (val) map.set(prop, val); |
| 895 | } |
| 896 | } |
| 897 | } |
| 898 | return map; |
| 899 | } |
| 900 | |
| 901 | // Resolve var(--X[, fallback]) refs in a computed-style value string. |
| 902 | // Recurses up to 8 levels for chained refs (--a: var(--b)). Returns |
| 903 | // the original string when no refs are present or the chain doesn't |
| 904 | // resolve. Safe to call on already-resolved values. |
| 905 | function resolveVarRefs(raw, customPropMap, depth = 0) { |
| 906 | if (typeof raw !== 'string' || !raw.includes('var(')) return raw; |
| 907 | if (depth > 8) return raw; |
| 908 | return raw.replace(/var\(\s*(--[a-zA-Z0-9_-]+)\s*(?:,\s*([^)]+))?\)/g, (_m, name, fallback) => { |
| 909 | const v = customPropMap.get(name); |
| 910 | if (v != null) return resolveVarRefs(v, customPropMap, depth + 1); |
| 911 | return fallback ? resolveVarRefs(fallback.trim(), customPropMap, depth + 1) : _m; |
| 912 | }); |
| 913 | } |
| 914 | |
| 915 | // OKLCH → sRGB conversion (Björn Ottosson's matrices). L in 0..1 (or %), |
| 916 | // C in 0..~0.4 typical, H in degrees. Returns clamped {r,g,b,a:1} in 0..255. |
| 917 | // Needed because jsdom doesn't compute oklch() values — getComputedStyle |
| 918 | // returns the literal "oklch(...)" string. Without this, the entire |
| 919 | // Tailwind v4 color palette (which is OKLCH-based) is invisible to the |
| 920 | // detector's contrast / color checks. |
| 921 | function oklchToRgb(L, C, H) { |
| 922 | const hRad = (H * Math.PI) / 180; |
| 923 | const a = C * Math.cos(hRad); |
| 924 | const b = C * Math.sin(hRad); |
| 925 | const l_ = L + 0.3963377774 * a + 0.2158037573 * b; |
| 926 | const m_ = L - 0.1055613458 * a - 0.0638541728 * b; |
| 927 | const s_ = L - 0.0894841775 * a - 1.2914855480 * b; |
| 928 | const lc = l_ * l_ * l_, mc = m_ * m_ * m_, sc = s_ * s_ * s_; |
| 929 | const rLin = 4.0767416621 * lc - 3.3077115913 * mc + 0.2309699292 * sc; |
| 930 | const gLin = -1.2684380046 * lc + 2.6097574011 * mc - 0.3413193965 * sc; |
| 931 | const bLin = -0.0041960863 * lc - 0.7034186147 * mc + 1.7076147010 * sc; |
| 932 | const enc = (x) => { |
| 933 | const c = Math.max(0, Math.min(1, x)); |
| 934 | return c <= 0.0031308 ? 12.92 * c : 1.055 * Math.pow(c, 1 / 2.4) - 0.055; |
| 935 | }; |
| 936 | return { |
| 937 | r: Math.round(enc(rLin) * 255), |
| 938 | g: Math.round(enc(gLin) * 255), |
| 939 | b: Math.round(enc(bLin) * 255), |
| 940 | a: 1, |
| 941 | }; |
| 942 | } |
| 943 | |
| 944 | // Extended color parser: rgb/rgba/hex/oklch. Returns null on no match. |
| 945 | // Use this when the input might be any CSS color form; use plain parseRgb |
| 946 | // when you only expect computed rgb() values from real browsers. |
| 947 | function parseAnyColor(s) { |
| 948 | if (!s || typeof s !== 'string') return null; |
| 949 | const str = s.trim(); |
| 950 | if (str === 'transparent' || str === 'currentcolor' || str === 'inherit') return null; |
| 951 | let m; |
| 952 | m = str.match(/rgba?\(\s*(\d+(?:\.\d+)?)\s*,?\s*(\d+(?:\.\d+)?)\s*,?\s*(\d+(?:\.\d+)?)(?:\s*[,/]\s*([\d.]+))?\s*\)/); |
| 953 | 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 }; |
| 954 | m = str.match(/^#([0-9a-f]{3,8})$/i); |
| 955 | if (m) { |
| 956 | const h = m[1]; |
| 957 | if (h.length === 3 || h.length === 4) { |
| 958 | return { |
| 959 | r: parseInt(h[0] + h[0], 16), |
| 960 | g: parseInt(h[1] + h[1], 16), |
| 961 | b: parseInt(h[2] + h[2], 16), |
| 962 | a: h.length === 4 ? parseInt(h[3] + h[3], 16) / 255 : 1, |
| 963 | }; |
| 964 | } |
| 965 | if (h.length === 6 || h.length === 8) { |
| 966 | return { |
| 967 | r: parseInt(h.slice(0, 2), 16), |
| 968 | g: parseInt(h.slice(2, 4), 16), |
| 969 | b: parseInt(h.slice(4, 6), 16), |
| 970 | a: h.length === 8 ? parseInt(h.slice(6, 8), 16) / 255 : 1, |
| 971 | }; |
| 972 | } |
| 973 | } |
| 974 | // OKLCH parser. Tailwind v4's CSS minifier squishes the space after |
| 975 | // `%` ("21.5%.02 50"), so the separator between L and C may be absent. |
| 976 | // Match L (with optional %), then C and H separated permissively. |
| 977 | m = str.match(/oklch\(\s*([\d.]+)(%?)\s*[\s,]*\s*([\d.]+)\s*[\s,]+\s*([-\d.]+)(?:deg)?\s*\)/i); |
| 978 | if (m) { |
| 979 | const Lnum = parseFloat(m[1]); |
| 980 | const L = m[2] === '%' ? Lnum / 100 : Lnum; |
| 981 | return oklchToRgb(L, parseFloat(m[3]), parseFloat(m[4])); |
| 982 | } |
| 983 | return null; |
| 984 | } |
| 985 | |
| 986 | // Resolve var() refs in a color string (via customPropMap), then parse. |
| 987 | // Returns null on any failure. Used in jsdom-mode paths where |
| 988 | // getComputedStyle returns literal "var(--X)" or "oklch(...)" strings. |
| 989 | function parseColorResolved(str, customPropMap) { |
| 990 | if (!str) return null; |
| 991 | const resolved = customPropMap ? resolveVarRefs(str, customPropMap) : str; |
| 992 | return parseAnyColor(resolved); |
| 993 | } |
| 994 | |
| 995 | const REPEATED_KICKER_SKIP_SELECTOR = [ |
| 996 | 'nav', |
| 997 | 'form', |
| 998 | 'table', |
| 999 | 'thead', |
| 1000 | 'tbody', |
| 1001 | 'tfoot', |
| 1002 | 'figure', |
| 1003 | 'figcaption', |
| 1004 | 'ol', |
| 1005 | 'ul', |
| 1006 | 'li', |
| 1007 | '[role="navigation"]', |
| 1008 | '[aria-label*="breadcrumb" i]', |
| 1009 | '[class*="breadcrumb" i]', |
| 1010 | '[data-impeccable-allow-kickers]', |
| 1011 | ].join(','); |
| 1012 | |
| 1013 | function cleanInlineText(el) { |
| 1014 | return [...el.childNodes] |
| 1015 | .filter(n => n.nodeType === 3) |
| 1016 | .map(n => n.textContent) |
| 1017 | .join(' ') |
| 1018 | .replace(/\s+/g, ' ') |
| 1019 | .trim(); |
| 1020 | } |
| 1021 | |
| 1022 | function isRepeatedKickerCandidate(opts) { |
| 1023 | const { |
| 1024 | headingTag, |
| 1025 | headingText, |
| 1026 | headingFontSize, |
| 1027 | kickerTag, |
| 1028 | kickerText, |
| 1029 | kickerTextTransform, |
| 1030 | kickerFontSize, |
| 1031 | kickerLetterSpacing, |
| 1032 | } = opts; |
| 1033 | if (!['h2', 'h3', 'h4'].includes(headingTag)) return false; |
| 1034 | if (!headingText || headingText.length < 3) return false; |
| 1035 | if (!(headingFontSize >= 20)) return false; |
| 1036 | if (!kickerTag || HEADING_TAGS.has(kickerTag)) return false; |
| 1037 | if (!['p', 'span', 'div', 'small'].includes(kickerTag)) return false; |
| 1038 | if (!kickerText || kickerText.length < 2 || kickerText.length > 34) return false; |
| 1039 | if (/^step\s*\d+/i.test(kickerText) || /^\d{1,2}$/.test(kickerText)) return false; |
| 1040 | |
| 1041 | const isUppercased = kickerTextTransform === 'uppercase' |
| 1042 | || (/[A-Z]/.test(kickerText) && !/[a-z]/.test(kickerText)); |
| 1043 | if (!isUppercased) return false; |
| 1044 | if (!(kickerFontSize > 0 && kickerFontSize <= 14)) return false; |
| 1045 | const minTrackedSpacing = Math.max(1, kickerFontSize * 0.08); |
| 1046 | if (!(kickerLetterSpacing >= minTrackedSpacing)) return false; |
| 1047 | return true; |
| 1048 | } |
| 1049 | |
| 1050 | function collectRepeatedSectionKickerCandidates(doc, getStyle, resolveLetterSpacing) { |
| 1051 | const candidates = []; |
| 1052 | for (const heading of doc.querySelectorAll('h2, h3, h4')) { |
| 1053 | if (heading.closest?.(REPEATED_KICKER_SKIP_SELECTOR)) continue; |
| 1054 | const kicker = heading.previousElementSibling; |
| 1055 | if (!kicker || kicker.closest?.(REPEATED_KICKER_SKIP_SELECTOR)) continue; |
| 1056 | |
| 1057 | const headingStyle = getStyle(heading); |
| 1058 | const kickerStyle = getStyle(kicker); |
| 1059 | const headingText = (heading.textContent || '').replace(/\s+/g, ' ').trim(); |
| 1060 | const kickerText = cleanInlineText(kicker) || (kicker.textContent || '').replace(/\s+/g, ' ').trim(); |
| 1061 | const headingFontSize = resolveLetterSpacing(headingStyle.fontSize || '', 16) || parseFloat(headingStyle.fontSize) || 0; |
| 1062 | const kickerFontSize = resolveLetterSpacing(kickerStyle.fontSize || '', 16) || parseFloat(kickerStyle.fontSize) || 0; |
| 1063 | const kickerLetterSpacing = resolveLetterSpacing(kickerStyle.letterSpacing || '', kickerFontSize); |
| 1064 | |
| 1065 | if (!isRepeatedKickerCandidate({ |
| 1066 | headingTag: heading.tagName.toLowerCase(), |
| 1067 | headingText, |
| 1068 | headingFontSize, |
| 1069 | kickerTag: kicker.tagName.toLowerCase(), |
| 1070 | kickerText, |
| 1071 | kickerTextTransform: kickerStyle.textTransform || '', |
| 1072 | kickerFontSize, |
| 1073 | kickerLetterSpacing, |
| 1074 | })) { |
| 1075 | continue; |
| 1076 | } |
| 1077 | |
| 1078 | candidates.push({ |
| 1079 | headingTag: heading.tagName.toLowerCase(), |
| 1080 | headingText: headingText.replace(/^"|"$/g, '').slice(0, 60), |
| 1081 | kickerText: kickerText.slice(0, 40), |
| 1082 | }); |
| 1083 | } |
| 1084 | return candidates; |
| 1085 | } |
| 1086 | |
| 1087 | function checkRepeatedSectionKickersDOM() { |
| 1088 | const candidates = collectRepeatedSectionKickerCandidates( |
| 1089 | document, |
| 1090 | (el) => getComputedStyle(el), |
| 1091 | (value, fontSize) => resolveLengthPx(value, fontSize) || 0, |
| 1092 | ); |
| 1093 | return checkRepeatedSectionKickers({ candidates }); |
| 1094 | } |
| 1095 | |
| 1096 | function checkElementMotionDOM(el) { |
| 1097 | const tag = el.tagName.toLowerCase(); |
| 1098 | if (SAFE_TAGS.has(tag)) return []; |
| 1099 | const style = getComputedStyle(el); |
| 1100 | return checkMotion({ |
| 1101 | tag, |
| 1102 | transitionProperty: style.transitionProperty || '', |
| 1103 | animationName: style.animationName || '', |
| 1104 | timingFunctions: [style.animationTimingFunction, style.transitionTimingFunction].filter(Boolean).join(' '), |
| 1105 | classList: el.getAttribute('class') || '', |
| 1106 | }); |
| 1107 | } |
| 1108 | |
| 1109 | function checkElementGlowDOM(el) { |
| 1110 | const tag = el.tagName.toLowerCase(); |
| 1111 | const style = getComputedStyle(el); |
| 1112 | if (!style.boxShadow || style.boxShadow === 'none') return []; |
| 1113 | // Use parent's background — glow radiates outward, so the surrounding context matters |
| 1114 | // If resolveBackground returns null (gradient), try to infer from the gradient colors |
| 1115 | let parentBg = el.parentElement ? resolveBackground(el.parentElement) : resolveBackground(el); |
| 1116 | if (!parentBg) { |
| 1117 | // Gradient background — sample its colors to determine if it's dark |
| 1118 | let cur = el.parentElement; |
| 1119 | while (cur && cur.nodeType === 1) { |
| 1120 | const bgImage = getComputedStyle(cur).backgroundImage || ''; |
| 1121 | const gradColors = parseGradientColors(bgImage); |
| 1122 | if (gradColors.length > 0) { |
| 1123 | // Average the gradient colors |
| 1124 | const avg = { r: 0, g: 0, b: 0 }; |
| 1125 | for (const c of gradColors) { avg.r += c.r; avg.g += c.g; avg.b += c.b; } |
| 1126 | avg.r = Math.round(avg.r / gradColors.length); |
| 1127 | avg.g = Math.round(avg.g / gradColors.length); |
| 1128 | avg.b = Math.round(avg.b / gradColors.length); |
| 1129 | parentBg = avg; |
| 1130 | break; |
| 1131 | } |
| 1132 | cur = cur.parentElement; |
| 1133 | } |
| 1134 | } |
| 1135 | return checkGlow({ tag, boxShadow: style.boxShadow, effectiveBg: parentBg }); |
| 1136 | } |
| 1137 | |
| 1138 | function checkElementAIPaletteDOM(el) { |
| 1139 | const style = getComputedStyle(el); |
| 1140 | const findings = []; |
| 1141 | |
| 1142 | // Check gradient backgrounds for purple/violet or cyan |
| 1143 | const bgImage = style.backgroundImage || ''; |
| 1144 | const gradColors = parseGradientColors(bgImage); |
| 1145 | for (const c of gradColors) { |
| 1146 | if (hasChroma(c, 50)) { |
| 1147 | const hue = getHue(c); |
| 1148 | if (hue >= 260 && hue <= 310) { |
| 1149 | findings.push({ id: 'ai-color-palette', snippet: 'Purple/violet gradient background' }); |
| 1150 | break; |
| 1151 | } |
| 1152 | if (hue >= 160 && hue <= 200) { |
| 1153 | findings.push({ id: 'ai-color-palette', snippet: 'Cyan gradient background' }); |
| 1154 | break; |
| 1155 | } |
| 1156 | } |
| 1157 | } |
| 1158 | |
| 1159 | // Check for neon text (vivid cyan/purple color on dark background) |
| 1160 | const textColor = parseRgb(style.color); |
| 1161 | if (textColor && hasChroma(textColor, 80)) { |
| 1162 | const hue = getHue(textColor); |
| 1163 | const isAIPalette = (hue >= 160 && hue <= 200) || (hue >= 260 && hue <= 310); |
| 1164 | if (isAIPalette) { |
| 1165 | const parentBg = el.parentElement ? resolveBackground(el.parentElement) : null; |
| 1166 | // Also check gradient parents |
| 1167 | let effectiveBg = parentBg; |
| 1168 | if (!effectiveBg) { |
| 1169 | let cur = el.parentElement; |
| 1170 | while (cur && cur.nodeType === 1) { |
| 1171 | const gi = getComputedStyle(cur).backgroundImage || ''; |
| 1172 | const gc = parseGradientColors(gi); |
| 1173 | if (gc.length > 0) { |
| 1174 | const avg = { r: 0, g: 0, b: 0 }; |
| 1175 | for (const c of gc) { avg.r += c.r; avg.g += c.g; avg.b += c.b; } |
| 1176 | avg.r = Math.round(avg.r / gc.length); |
| 1177 | avg.g = Math.round(avg.g / gc.length); |
| 1178 | avg.b = Math.round(avg.b / gc.length); |
| 1179 | effectiveBg = avg; |
| 1180 | break; |
| 1181 | } |
| 1182 | cur = cur.parentElement; |
| 1183 | } |
| 1184 | } |
| 1185 | if (effectiveBg && relativeLuminance(effectiveBg) < 0.1) { |
| 1186 | const label = hue >= 260 ? 'Purple/violet' : 'Cyan'; |
| 1187 | findings.push({ id: 'ai-color-palette', snippet: `${label} neon text on dark background` }); |
| 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | return findings; |
| 1193 | } |
| 1194 | |
| 1195 | const QUALITY_TEXT_TAGS = new Set(['p', 'li', 'td', 'th', 'dd', 'blockquote', 'figcaption']); |
| 1196 | |
| 1197 | // Resolve a CSS font-size value to pixels by walking up the parent chain. |
| 1198 | // Browsers resolve em/rem/% to px in getComputedStyle, but jsdom returns the |
| 1199 | // specified value verbatim — so for the Node path we walk parents ourselves. |
| 1200 | function resolveFontSizePx(el, win) { |
| 1201 | const chain = []; // raw font-size strings, leaf → root |
| 1202 | let cur = el; |
| 1203 | while (cur && cur.nodeType === 1) { |
| 1204 | const fs = (win ? win.getComputedStyle(cur) : getComputedStyle(cur)).fontSize; |
| 1205 | chain.push(fs || ''); |
| 1206 | cur = cur.parentElement; |
| 1207 | } |
| 1208 | // Walk root → leaf, resolving each value relative to its parent context. |
| 1209 | let px = 16; // root default |
| 1210 | for (let i = chain.length - 1; i >= 0; i--) { |
| 1211 | const v = chain[i]; |
| 1212 | if (!v || v === 'inherit') continue; |
| 1213 | const num = parseFloat(v); |
| 1214 | if (isNaN(num)) continue; |
| 1215 | if (v.endsWith('px')) px = num; |
| 1216 | else if (v.endsWith('rem')) px = num * 16; |
| 1217 | else if (v.endsWith('em')) px = num * px; |
| 1218 | else if (v.endsWith('%')) px = (num / 100) * px; |
| 1219 | else px = num; // unitless — already resolved |
| 1220 | } |
| 1221 | return px; |
| 1222 | } |
| 1223 | |
| 1224 | // Resolve a CSS length value (line-height, letter-spacing, etc.) given a |
| 1225 | // known font-size context. Returns null for "normal" / unparseable values. |
| 1226 | function resolveLengthPx(value, fontSizePx) { |
| 1227 | if (!value || value === 'normal' || value === 'auto' || value === 'inherit') return null; |
| 1228 | const num = parseFloat(value); |
| 1229 | if (isNaN(num)) return null; |
| 1230 | if (value.endsWith('px')) return num; |
| 1231 | if (value.endsWith('rem')) return num * 16; |
| 1232 | if (value.endsWith('em')) return num * fontSizePx; |
| 1233 | if (value.endsWith('%')) return (num / 100) * fontSizePx; |
| 1234 | // Unitless line-height = multiplier, return px equivalent |
| 1235 | return num * fontSizePx; |
| 1236 | } |
| 1237 | |
| 1238 | // Pure quality checks. Most run on computed CSS and DOM-only inputs (work in |
| 1239 | // jsdom and the browser). Two checks (line-length, cramped-padding) gate on |
| 1240 | // element rect dimensions, which jsdom can't compute — pass `rect: null` from |
| 1241 | // the Node adapter to skip those. |
| 1242 | // |
| 1243 | // Both adapters resolve font-size, line-height and letter-spacing to pixels |
| 1244 | // before calling this so the pure function only deals with numbers. |
| 1245 | function checkQuality(opts) { |
| 1246 | const { el, tag, style, hasDirectText, textLen, fontSize, lineHeightPx, letterSpacingPx, rect, lineMax = 80, viewportWidth = 0, win = null } = opts; |
| 1247 | const findings = []; |
| 1248 | // Skip browser extension injected elements |
| 1249 | const elId = el.id || ''; |
| 1250 | if (elId.startsWith('claude-') || elId.startsWith('cic-')) return findings; |
| 1251 | |
| 1252 | // --- Line length too long --- (browser-only: needs rect.width) |
| 1253 | if (rect && hasDirectText && QUALITY_TEXT_TAGS.has(tag) && rect.width > 0 && textLen > lineMax) { |
| 1254 | const charsPerLine = rect.width / (fontSize * 0.5); |
| 1255 | if (charsPerLine > lineMax + 5) { |
| 1256 | findings.push({ id: 'line-length', snippet: `~${Math.round(charsPerLine)} chars/line (aim for <${lineMax})` }); |
| 1257 | } |
| 1258 | } |
| 1259 | |
| 1260 | // --- Cramped padding --- (browser-only: needs rect to skip small badges/labels) |
| 1261 | // Vertical and horizontal thresholds are independent because line-height |
| 1262 | // already provides built-in vertical breathing room (the line box is taller |
| 1263 | // than the cap height), but horizontal has no equivalent. Both scale with |
| 1264 | // font-size — bigger text demands proportionally more padding. |
| 1265 | // vertical: max(4px, fontSize × 0.3) |
| 1266 | // horizontal: max(8px, fontSize × 0.5) |
| 1267 | if (rect && hasDirectText && textLen > 20 && rect.width > 100 && rect.height > 30) { |
| 1268 | const borders = { |
| 1269 | top: parseFloat(style.borderTopWidth) || 0, |
| 1270 | right: parseFloat(style.borderRightWidth) || 0, |
| 1271 | bottom: parseFloat(style.borderBottomWidth) || 0, |
| 1272 | left: parseFloat(style.borderLeftWidth) || 0, |
| 1273 | }; |
| 1274 | const borderCount = Object.values(borders).filter(w => w > 0).length; |
| 1275 | const hasBg = style.backgroundColor && style.backgroundColor !== 'rgba(0, 0, 0, 0)'; |
| 1276 | if (borderCount >= 2 || hasBg) { |
| 1277 | const vPads = [], hPads = []; |
| 1278 | if (hasBg || borders.top > 0) vPads.push(parseFloat(style.paddingTop) || 0); |
| 1279 | if (hasBg || borders.bottom > 0) vPads.push(parseFloat(style.paddingBottom) || 0); |
| 1280 | if (hasBg || borders.left > 0) hPads.push(parseFloat(style.paddingLeft) || 0); |
| 1281 | if (hasBg || borders.right > 0) hPads.push(parseFloat(style.paddingRight) || 0); |
| 1282 | |
| 1283 | const vMin = vPads.length ? Math.min(...vPads) : Infinity; |
| 1284 | const hMin = hPads.length ? Math.min(...hPads) : Infinity; |
| 1285 | const vThresh = Math.max(4, fontSize * 0.3); |
| 1286 | const hThresh = Math.max(8, fontSize * 0.5); |
| 1287 | |
| 1288 | // Emit at most one finding per element — pick whichever axis is worse. |
| 1289 | if (vMin < vThresh) { |
| 1290 | findings.push({ id: 'cramped-padding', snippet: `${vMin}px vertical padding (need ≥${vThresh.toFixed(1)}px for ${fontSize}px text)` }); |
| 1291 | } else if (hMin < hThresh) { |
| 1292 | findings.push({ id: 'cramped-padding', snippet: `${hMin}px horizontal padding (need ≥${hThresh.toFixed(1)}px for ${fontSize}px text)` }); |
| 1293 | } |
| 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | // --- Flush against a visible boundary --- |
| 1298 | // Fires when a container has a visible boundary (border, outline, OR a |
| 1299 | // non-transparent background) AND near-zero padding on the bounded |
| 1300 | // side(s) AND text-bearing children land flush against the boundary. |
| 1301 | // |
| 1302 | // Distinct from cramped-padding: that rule needs the element itself to |
| 1303 | // have direct text (hasDirectText). This rule targets the OPPOSITE |
| 1304 | // shape — a container with NO direct text, only children — which is |
| 1305 | // exactly what cramped-padding misses (a section wrapping a label + |
| 1306 | // list lands a free pass). |
| 1307 | // |
| 1308 | // The classic shape: agent writes `padding: 28px 0 0` shorthand on a |
| 1309 | // section that also has a border, zeroing horizontal padding so the |
| 1310 | // text-bearing children touch the side borders. Background and |
| 1311 | // outline count too: a colored card with zero padding has the same |
| 1312 | // visual failure mode. |
| 1313 | { |
| 1314 | 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']); |
| 1315 | const upperTag = tag ? tag.toUpperCase() : ''; |
| 1316 | const elPosition = style.position || ''; |
| 1317 | if ( |
| 1318 | !FLUSH_SKIP_TAGS.has(upperTag) && |
| 1319 | !hasDirectText && |
| 1320 | !['fixed', 'absolute'].includes(elPosition) && |
| 1321 | el.children && el.children.length > 0 |
| 1322 | ) { |
| 1323 | const isTransparent = (c) => |
| 1324 | !c || c === 'transparent' || c === 'rgba(0, 0, 0, 0)' || |
| 1325 | /^rgba\(\s*\d+\s*,\s*\d+\s*,\s*\d+\s*,\s*0(?:\.0+)?\s*\)$/.test(c); |
| 1326 | |
| 1327 | const borderW = { |
| 1328 | top: parseFloat(style.borderTopWidth) || 0, |
| 1329 | right: parseFloat(style.borderRightWidth) || 0, |
| 1330 | bottom: parseFloat(style.borderBottomWidth) || 0, |
| 1331 | left: parseFloat(style.borderLeftWidth) || 0, |
| 1332 | }; |
| 1333 | const borderVisible = { |
| 1334 | top: borderW.top > 0 && !isTransparent(style.borderTopColor), |
| 1335 | right: borderW.right > 0 && !isTransparent(style.borderRightColor), |
| 1336 | bottom: borderW.bottom > 0 && !isTransparent(style.borderBottomColor), |
| 1337 | left: borderW.left > 0 && !isTransparent(style.borderLeftColor), |
| 1338 | }; |
| 1339 | // Outline detection. jsdom decomposes `border` shorthand into |
| 1340 | // border{Top,…}Width/Color but does NOT decompose `outline` — |
| 1341 | // the longhands come back empty when the value was set via the |
| 1342 | // shorthand. Fall back to parsing `style.outline` ourselves. |
| 1343 | let outlineW = parseFloat(style.outlineWidth) || 0; |
| 1344 | let outlineStyleVal = style.outlineStyle || ''; |
| 1345 | let outlineColorVal = style.outlineColor || ''; |
| 1346 | if (!outlineW && style.outline) { |
| 1347 | const wMatch = style.outline.match(/(\d+(?:\.\d+)?)\s*px/); |
| 1348 | if (wMatch) outlineW = parseFloat(wMatch[1]) || 0; |
| 1349 | if (!outlineStyleVal) { |
| 1350 | outlineStyleVal = /\b(solid|dashed|dotted|double|groove|ridge|inset|outset)\b/.test(style.outline) ? 'solid' : ''; |
| 1351 | } |
| 1352 | if (!outlineColorVal) { |
| 1353 | const cMatch = style.outline.match(/(rgba?\([^)]+\)|#[0-9a-fA-F]{3,8}|[a-zA-Z]+)\s*$/); |
| 1354 | if (cMatch) outlineColorVal = cMatch[1]; |
| 1355 | } |
| 1356 | } |
| 1357 | const outlineVisible = outlineW > 0 && !isTransparent(outlineColorVal) && outlineStyleVal && outlineStyleVal !== 'none'; |
| 1358 | const bgVisible = !isTransparent(style.backgroundColor); |
| 1359 | |
| 1360 | const anyVisible = borderVisible.top || borderVisible.right || borderVisible.bottom || borderVisible.left || outlineVisible || bgVisible; |
| 1361 | if (anyVisible) { |
| 1362 | // Resolve padding to px (jsdom returns raw "1.5rem" etc., not the |
| 1363 | // computed px value; parseFloat would strip the unit and treat |
| 1364 | // 1.5rem as 1.5px, false-flagging legitimate insets). |
| 1365 | const pad = { |
| 1366 | top: resolveLengthPx(style.paddingTop, fontSize) ?? 0, |
| 1367 | right: resolveLengthPx(style.paddingRight, fontSize) ?? 0, |
| 1368 | bottom: resolveLengthPx(style.paddingBottom, fontSize) ?? 0, |
| 1369 | left: resolveLengthPx(style.paddingLeft, fontSize) ?? 0, |
| 1370 | }; |
| 1371 | const PAD_THRESHOLD = 2; |
| 1372 | // Children-insulate-this-side: a side is insulated if ANY direct |
| 1373 | // child has its own padding ≥ 4px on that side. Rationale: in |
| 1374 | // typical flow, only the first/last (or leftmost/rightmost) |
| 1375 | // children actually sit at the parent's edges. If even one of |
| 1376 | // them has its own padding, the visual flush is broken on that |
| 1377 | // side. Classic example: a column-flow card frame where the |
| 1378 | // top child (header) has padding-top:12 and the bottom child |
| 1379 | // (footer) has padding-bottom:8 — the parent's padding:0 doesn't |
| 1380 | // matter; nothing is actually flush. The `any-child-insulates` |
| 1381 | // heuristic accepts some false negatives (a card with one heavily |
| 1382 | // padded middle child won't flag) for far fewer false positives. |
| 1383 | const CHILD_INSULATE_THRESHOLD = 4; |
| 1384 | const childrenInsulate = { top: false, right: false, bottom: false, left: false }; |
| 1385 | for (const child of el.children) { |
| 1386 | let childStyle = null; |
| 1387 | if (win && typeof win.getComputedStyle === 'function') { |
| 1388 | try { childStyle = win.getComputedStyle(child); } catch {} |
| 1389 | } |
| 1390 | if (!childStyle && typeof getComputedStyle === 'function') { |
| 1391 | try { childStyle = getComputedStyle(child); } catch {} |
| 1392 | } |
| 1393 | if (!childStyle) continue; |
| 1394 | const childPad = { |
| 1395 | top: resolveLengthPx(childStyle.paddingTop, fontSize) ?? 0, |
| 1396 | right: resolveLengthPx(childStyle.paddingRight, fontSize) ?? 0, |
| 1397 | bottom: resolveLengthPx(childStyle.paddingBottom, fontSize) ?? 0, |
| 1398 | left: resolveLengthPx(childStyle.paddingLeft, fontSize) ?? 0, |
| 1399 | }; |
| 1400 | for (const s of ['top', 'right', 'bottom', 'left']) { |
| 1401 | if (childPad[s] >= CHILD_INSULATE_THRESHOLD) childrenInsulate[s] = true; |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | const flushSides = []; |
| 1406 | for (const side of ['top', 'right', 'bottom', 'left']) { |
| 1407 | const sideBounded = borderVisible[side] || outlineVisible || bgVisible; |
| 1408 | if (sideBounded && pad[side] <= PAD_THRESHOLD && !childrenInsulate[side]) { |
| 1409 | flushSides.push(side); |
| 1410 | } |
| 1411 | } |
| 1412 | |
| 1413 | if (flushSides.length > 0) { |
| 1414 | // Confirm at least one direct child has substantial text content |
| 1415 | // (> 4 chars). Without this, the flush is harmless: e.g. an |
| 1416 | // image-only card. |
| 1417 | let hasTextChild = false; |
| 1418 | for (const child of el.children) { |
| 1419 | const childText = (child.textContent || '').trim(); |
| 1420 | if (childText.length > 4) { hasTextChild = true; break; } |
| 1421 | } |
| 1422 | if (hasTextChild) { |
| 1423 | const cls = (typeof el.className === 'string' && el.className.trim()) |
| 1424 | ? el.className.trim().split(/\s+/)[0] |
| 1425 | : ''; |
| 1426 | const boundaryParts = []; |
| 1427 | const borderSidesVisible = ['top', 'right', 'bottom', 'left'].filter(s => borderVisible[s]); |
| 1428 | if (borderSidesVisible.length === 4) boundaryParts.push('border'); |
| 1429 | else if (borderSidesVisible.length > 0) boundaryParts.push(`border-${borderSidesVisible.join('/')}`); |
| 1430 | if (outlineVisible) boundaryParts.push('outline'); |
| 1431 | if (bgVisible) boundaryParts.push('bg'); |
| 1432 | const sidesLabel = flushSides.length === 4 ? 'all sides' : flushSides.join('/'); |
| 1433 | const ident = cls |
| 1434 | ? `<${tag.toLowerCase()}> "${cls}"` |
| 1435 | : `<${tag.toLowerCase()}>`; |
| 1436 | findings.push({ |
| 1437 | id: 'cramped-padding', |
| 1438 | snippet: `${ident}: children flush against ${boundaryParts.join('+')} on ${sidesLabel} (no inset)`, |
| 1439 | }); |
| 1440 | } |
| 1441 | } |
| 1442 | } |
| 1443 | } |
| 1444 | } |
| 1445 | |
| 1446 | // --- Body text touching viewport edge --- (browser-only: needs rect) |
| 1447 | // Catches the failure mode where the agent ships body paragraphs |
| 1448 | // with NO container providing horizontal padding — text bleeds |
| 1449 | // directly to the viewport edge. Different from cramped-padding, |
| 1450 | // which requires a colored/bordered container. Here the failure |
| 1451 | // is the absence of the container entirely. |
| 1452 | // |
| 1453 | // Gate aggressively to avoid false positives: |
| 1454 | // - <p> or <li> only (body content; not headings, not nav, not |
| 1455 | // wrappers) |
| 1456 | // - text > 40 chars (paragraph-like, not a label) |
| 1457 | // - rect.width > 50% of viewport (real body, not a pull-quote) |
| 1458 | // - rect.left < 16 OR rect.right > viewport - 16 (actually |
| 1459 | // touching the edge) |
| 1460 | // - not inside <nav> or <header> (those legitimately bleed) |
| 1461 | // - element itself has no background-color (intentional full-bleed |
| 1462 | // sections set a bg-color and provide their own internal padding) |
| 1463 | if (rect && hasDirectText && textLen > 40 && ['P', 'LI'].includes(tag.toUpperCase()) && viewportWidth > 0) { |
| 1464 | const inNavHeader = el.closest && (el.closest('nav') || el.closest('header')); |
| 1465 | const hasOwnBg = style.backgroundColor && style.backgroundColor !== 'rgba(0, 0, 0, 0)' && style.backgroundColor !== 'transparent'; |
| 1466 | const isPositioned = ['fixed', 'absolute'].includes(style.position || ''); |
| 1467 | const widthRatio = rect.width / viewportWidth; |
| 1468 | const leftClose = rect.left < 16; |
| 1469 | const rightClose = rect.right > viewportWidth - 16; |
| 1470 | if (!inNavHeader && !hasOwnBg && !isPositioned && widthRatio > 0.5 && (leftClose || rightClose)) { |
| 1471 | const which = leftClose && rightClose |
| 1472 | ? `left ${Math.round(rect.left)}px / right ${Math.round(viewportWidth - rect.right)}px` |
| 1473 | : leftClose |
| 1474 | ? `left ${Math.round(rect.left)}px` |
| 1475 | : `right ${Math.round(viewportWidth - rect.right)}px`; |
| 1476 | findings.push({ id: 'body-text-viewport-edge', snippet: `<${tag.toLowerCase()}> with ${textLen}-char body bleeds to viewport edge (${which})` }); |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | // --- Tight line height --- |
| 1481 | if (hasDirectText && textLen > 50 && !['h1','h2','h3','h4','h5','h6'].includes(tag)) { |
| 1482 | if (lineHeightPx != null && fontSize > 0) { |
| 1483 | const ratio = lineHeightPx / fontSize; |
| 1484 | if (ratio > 0 && ratio < 1.3) { |
| 1485 | findings.push({ id: 'tight-leading', snippet: `line-height ${ratio.toFixed(2)}x (need >=1.3)` }); |
| 1486 | } |
| 1487 | } |
| 1488 | } |
| 1489 | |
| 1490 | // --- Justified text (without hyphens) --- |
| 1491 | if (hasDirectText && style.textAlign === 'justify') { |
| 1492 | const hyphens = style.hyphens || style.webkitHyphens || ''; |
| 1493 | if (hyphens !== 'auto') { |
| 1494 | findings.push({ id: 'justified-text', snippet: 'text-align: justify without hyphens: auto' }); |
| 1495 | } |
| 1496 | } |
| 1497 | |
| 1498 | // --- Tiny body text --- |
| 1499 | // Only flag actual body content, not UI labels (buttons, tabs, badges, captions, footer text, etc.) |
| 1500 | if (hasDirectText && textLen > 20 && fontSize < 12) { |
| 1501 | const skipTags = ['sub', 'sup', 'code', 'kbd', 'samp', 'var', 'caption', 'figcaption']; |
| 1502 | const inUIContext = el.closest && el.closest('button, a, label, summary, [role="button"], [role="link"], [role="tab"], [role="menuitem"], [role="option"], nav, footer, [class*="badge" i], [class*="chip" i], [class*="pill" i], [class*="tag" i], [class*="label" i], [class*="caption" i]'); |
| 1503 | const isUppercase = style.textTransform === 'uppercase'; |
| 1504 | if (!skipTags.includes(tag) && !inUIContext && !isUppercase) { |
| 1505 | findings.push({ id: 'tiny-text', snippet: `${fontSize}px body text` }); |
| 1506 | } |
| 1507 | } |
| 1508 | |
| 1509 | // --- All-caps body text --- |
| 1510 | if (hasDirectText && textLen > 30 && style.textTransform === 'uppercase') { |
| 1511 | if (!['h1','h2','h3','h4','h5','h6'].includes(tag)) { |
| 1512 | findings.push({ id: 'all-caps-body', snippet: `text-transform: uppercase on ${textLen} chars of body text` }); |
| 1513 | } |
| 1514 | } |
| 1515 | |
| 1516 | // --- Wide letter spacing on body text --- |
| 1517 | if (hasDirectText && textLen > 20 && style.textTransform !== 'uppercase') { |
| 1518 | if (letterSpacingPx != null && letterSpacingPx > 0 && fontSize > 0) { |
| 1519 | const trackingEm = letterSpacingPx / fontSize; |
| 1520 | if (trackingEm > 0.05) { |
| 1521 | findings.push({ id: 'wide-tracking', snippet: `letter-spacing: ${trackingEm.toFixed(2)}em on body text` }); |
| 1522 | } |
| 1523 | } |
| 1524 | } |
| 1525 | |
| 1526 | // --- Crushed letter spacing (mirror of wide-tracking) --- |
| 1527 | // Tracking pulled tighter than ~-0.05em crushes characters into each other. |
| 1528 | // Optical tightening that display type legitimately wants (around -0.02em) |
| 1529 | // stays well above this floor. |
| 1530 | if (hasDirectText && textLen > 20 && fontSize > 0) { |
| 1531 | if (letterSpacingPx != null && letterSpacingPx < 0) { |
| 1532 | const trackingEm = letterSpacingPx / fontSize; |
| 1533 | if (trackingEm <= -0.05) { |
| 1534 | const excerpt = (el.textContent || '').trim().replace(/\s+/g, ' ').slice(0, 40); |
| 1535 | findings.push({ id: 'extreme-negative-tracking', snippet: `letter-spacing: ${trackingEm.toFixed(2)}em — "${excerpt}"` }); |
| 1536 | } |
| 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | return findings; |
| 1541 | } |
| 1542 | |
| 1543 | function checkElementQualityDOM(el) { |
| 1544 | const tag = el.tagName.toLowerCase(); |
| 1545 | const style = getComputedStyle(el); |
| 1546 | const hasDirectText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 10); |
| 1547 | const textLen = el.textContent?.trim().length || 0; |
| 1548 | // Browser getComputedStyle resolves everything to px — direct parseFloat |
| 1549 | // works. |
| 1550 | const fontSize = parseFloat(style.fontSize) || 16; |
| 1551 | const lineHeightPx = resolveLengthPx(style.lineHeight, fontSize); |
| 1552 | const letterSpacingPx = resolveLengthPx(style.letterSpacing, fontSize); |
| 1553 | const rect = el.getBoundingClientRect(); |
| 1554 | const lineMax = (typeof window !== 'undefined' && window.__IMPECCABLE_CONFIG__?.lineLengthMax) || 80; |
| 1555 | const viewportWidth = (typeof window !== 'undefined' ? window.innerWidth : 0) || 0; |
| 1556 | return checkQuality({ el, tag, style, hasDirectText, textLen, fontSize, lineHeightPx, letterSpacingPx, rect, lineMax, viewportWidth, win: typeof window !== 'undefined' ? window : null }); |
| 1557 | } |
| 1558 | |
| 1559 | // Pure page-level skipped-heading walk. Takes a Document so it works in both |
| 1560 | // the browser and jsdom. |
| 1561 | function checkPageQualityFromDoc(doc) { |
| 1562 | const findings = []; |
| 1563 | const headings = doc.querySelectorAll('h1, h2, h3, h4, h5, h6'); |
| 1564 | let prevLevel = 0; |
| 1565 | let prevText = ''; |
| 1566 | for (const h of headings) { |
| 1567 | const level = parseInt(h.tagName[1]); |
| 1568 | const text = (h.textContent || '').trim().replace(/\s+/g, ' ').slice(0, 60); |
| 1569 | if (prevLevel > 0 && level > prevLevel + 1) { |
| 1570 | findings.push({ |
| 1571 | id: 'skipped-heading', |
| 1572 | snippet: `<h${prevLevel}> "${prevText}" followed by <h${level}> "${text}" (missing h${prevLevel + 1})`, |
| 1573 | }); |
| 1574 | } |
| 1575 | prevLevel = level; |
| 1576 | prevText = text; |
| 1577 | } |
| 1578 | return findings; |
| 1579 | } |
| 1580 | |
| 1581 | // Browser adapter (returns the legacy { type, detail } shape used by the overlay loop) |
| 1582 | function checkPageQualityDOM() { |
| 1583 | return checkPageQualityFromDoc(document).map(f => ({ type: f.id, detail: f.snippet })); |
| 1584 | } |
| 1585 | |
| 1586 | // Node adapters — take pre-extracted jsdom computed style |
| 1587 | |
| 1588 | // jsdom doesn't lay out OR resolve em/rem/% to px — so we pre-resolve every |
| 1589 | // CSS length the rule needs ourselves (walking the parent chain for |
| 1590 | // font-size inheritance), and pass `rect: null` to skip the two rules that |
| 1591 | // genuinely need element rects (line-length, cramped-padding). |
| 1592 | function checkElementQuality(el, style, tag, window) { |
| 1593 | const hasDirectText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 10); |
| 1594 | const textLen = el.textContent?.trim().length || 0; |
| 1595 | const fontSize = resolveFontSizePx(el, window); |
| 1596 | const lineHeightPx = resolveLengthPx(style.lineHeight, fontSize); |
| 1597 | const letterSpacingPx = resolveLengthPx(style.letterSpacing, fontSize); |
| 1598 | return checkQuality({ el, tag, style, hasDirectText, textLen, fontSize, lineHeightPx, letterSpacingPx, rect: null, win: window }); |
| 1599 | } |
| 1600 | |
| 1601 | function checkElementBorders(tag, style, overrides, resolvedRadius) { |
| 1602 | const sides = ['Top', 'Right', 'Bottom', 'Left']; |
| 1603 | const widths = {}, colors = {}; |
| 1604 | for (const s of sides) { |
| 1605 | widths[s] = parseFloat(style[`border${s}Width`]) || 0; |
| 1606 | colors[s] = style[`border${s}Color`] || ''; |
| 1607 | // jsdom silently drops any border shorthand containing var(), leaving |
| 1608 | // both width and color empty on the computed style. When the detectHtml |
| 1609 | // pre-pass pulled a resolved value off the rule, use it to fill in the |
| 1610 | // missing side so the side-tab check can run. Real browsers resolve |
| 1611 | // var() natively, so this fallback is a no-op in the browser path. |
| 1612 | if (widths[s] === 0 && overrides && overrides[s]) { |
| 1613 | widths[s] = overrides[s].width; |
| 1614 | colors[s] = overrides[s].color; |
| 1615 | } else if (colors[s] && colors[s].startsWith('var(') && overrides && overrides[s]) { |
| 1616 | // Longhand case: jsdom kept the width but left the color as the |
| 1617 | // literal `var(...)` string. Substitute the resolved color. |
| 1618 | colors[s] = overrides[s].color; |
| 1619 | } |
| 1620 | } |
| 1621 | // resolvedRadius lets the caller pre-resolve the radius via |
| 1622 | // resolveBorderRadiusPx so the value survives jsdom 29.1.0's broken |
| 1623 | // shorthand serialization. Falls back to the computed value for tests |
| 1624 | // and browser callers that don't pre-resolve. |
| 1625 | const radius = resolvedRadius != null |
| 1626 | ? resolvedRadius |
| 1627 | : (parseFloat(style.borderRadius) || 0); |
| 1628 | return checkBorders(tag, widths, colors, radius); |
| 1629 | } |
| 1630 | |
| 1631 | function checkElementColors(el, style, tag, window, customPropMap, hasAnchorInheritRule) { |
| 1632 | const directText = [...el.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join(''); |
| 1633 | const hasDirectText = directText.trim().length > 0; |
| 1634 | |
| 1635 | const effectiveBg = resolveBackground(el, window, customPropMap); |
| 1636 | // jsdom returns literal "var(--X)" / "oklch(...)" for color, so plain |
| 1637 | // parseRgb misses Tailwind-tokenized text colors. Resolve through the |
| 1638 | // customPropMap first; fall back to parseRgb for vanilla rgb() pages. |
| 1639 | let textColor = customPropMap ? parseColorResolved(style.color, customPropMap) : null; |
| 1640 | if (!textColor) textColor = parseRgb(style.color); |
| 1641 | |
| 1642 | // Anchor-inherit FP workaround: jsdom's UA stylesheet has `:link { color: |
| 1643 | // blue }` at high specificity. The page's `a { color: inherit }` rule |
| 1644 | // (Tailwind v4 preflight) loses to jsdom even though it WINS in real |
| 1645 | // browsers (Chrome's UA wraps :link in :where() — zero specificity). |
| 1646 | // When the page declares the inherit rule AND we see jsdom's default |
| 1647 | // link blue on an anchor, walk to the nearest non-anchor ancestor and |
| 1648 | // use its color instead. |
| 1649 | if ( |
| 1650 | hasAnchorInheritRule && |
| 1651 | textColor && |
| 1652 | textColor.r === 0 && textColor.g === 0 && textColor.b === 238 && |
| 1653 | (tag === 'a' || el.closest?.('a')) |
| 1654 | ) { |
| 1655 | let cur = el.parentElement; |
| 1656 | while (cur && cur.tagName !== 'HTML') { |
| 1657 | if (cur.tagName !== 'A') { |
| 1658 | const ps = window.getComputedStyle(cur); |
| 1659 | const inh = (customPropMap ? parseColorResolved(ps.color, customPropMap) : null) || parseRgb(ps.color); |
| 1660 | if (inh && !(inh.r === 0 && inh.g === 0 && inh.b === 238)) { |
| 1661 | textColor = inh; |
| 1662 | break; |
| 1663 | } |
| 1664 | } |
| 1665 | cur = cur.parentElement; |
| 1666 | } |
| 1667 | } |
| 1668 | |
| 1669 | return checkColors({ |
| 1670 | tag, |
| 1671 | textColor, |
| 1672 | bgColor: readOwnBackgroundColor(el, style), |
| 1673 | effectiveBg, |
| 1674 | effectiveBgStops: effectiveBg ? null : resolveGradientStops(el, window), |
| 1675 | fontSize: parseFloat(style.fontSize) || 16, |
| 1676 | fontWeight: parseInt(style.fontWeight) || 400, |
| 1677 | hasDirectText, |
| 1678 | isEmojiOnly: isEmojiOnlyText(directText), |
| 1679 | bgClip: style.webkitBackgroundClip || style.backgroundClip || '', |
| 1680 | bgImage: style.backgroundImage || '', |
| 1681 | classList: el.getAttribute?.('class') || el.className || '', |
| 1682 | }); |
| 1683 | } |
| 1684 | |
| 1685 | function checkElementIconTile(el, tag, window) { |
| 1686 | if (!HEADING_TAGS.has(tag)) return []; |
| 1687 | const sibling = el.previousElementSibling; |
| 1688 | if (!sibling) return []; |
| 1689 | |
| 1690 | const sibStyle = window.getComputedStyle(sibling); |
| 1691 | // jsdom doesn't lay out — read explicit pixel dimensions from CSS instead. |
| 1692 | const sibWidth = parseFloat(sibStyle.width) || 0; |
| 1693 | const sibHeight = parseFloat(sibStyle.height) || 0; |
| 1694 | |
| 1695 | const iconChild = sibling.querySelector('svg, i[data-lucide], i[class*="fa-"], i[class*="icon"]'); |
| 1696 | let iconWidth = 0; |
| 1697 | if (iconChild) { |
| 1698 | const iconStyle = window.getComputedStyle(iconChild); |
| 1699 | iconWidth = parseFloat(iconStyle.width) || parseFloat(iconChild.getAttribute('width')) || 0; |
| 1700 | } |
| 1701 | // Or: tile contains an emoji/symbol character directly as its only content |
| 1702 | const sibDirectText = [...sibling.childNodes].filter(n => n.nodeType === 3).map(n => n.textContent).join(''); |
| 1703 | const hasInlineEmojiIcon = sibling.children.length === 0 && isEmojiOnlyText(sibDirectText); |
| 1704 | |
| 1705 | return checkIconTile({ |
| 1706 | headingTag: tag, |
| 1707 | headingText: el.textContent || '', |
| 1708 | headingTop: 0, // jsdom: no layout, skip vertical-stacking gate |
| 1709 | siblingTag: sibling.tagName.toLowerCase(), |
| 1710 | siblingWidth: sibWidth, |
| 1711 | siblingHeight: sibHeight, |
| 1712 | siblingBottom: 0, |
| 1713 | siblingBgColor: parseRgb(sibStyle.backgroundColor), |
| 1714 | siblingBgImage: sibStyle.backgroundImage || '', |
| 1715 | siblingBorderWidth: parseFloat(sibStyle.borderTopWidth) || 0, |
| 1716 | siblingBorderRadius: resolveBorderRadiusPx(sibling, sibStyle, sibWidth, window), |
| 1717 | hasIconChild: !!iconChild || hasInlineEmojiIcon, |
| 1718 | iconChildWidth: iconWidth, |
| 1719 | }); |
| 1720 | } |
| 1721 | |
| 1722 | function checkElementItalicSerif(el, style, tag) { |
| 1723 | if (tag !== 'h1' && tag !== 'h2') return []; |
| 1724 | return checkItalicSerif({ |
| 1725 | tag, |
| 1726 | fontStyle: style.fontStyle || '', |
| 1727 | fontFamily: style.fontFamily || '', |
| 1728 | fontSize: parseFloat(style.fontSize) || 0, |
| 1729 | headingText: el.textContent || '', |
| 1730 | }); |
| 1731 | } |
| 1732 | |
| 1733 | function checkElementHeroEyebrow(el, style, tag, window, customPropMap) { |
| 1734 | if (tag !== 'h1') return []; |
| 1735 | const sibling = el.previousElementSibling; |
| 1736 | if (!sibling) return []; |
| 1737 | const sibStyle = window.getComputedStyle(sibling); |
| 1738 | // Resolve Tailwind v4 CSS-variable wrappers (font-weight:var(--font-weight-bold) |
| 1739 | // etc.) before parsing. jsdom returns these verbatim from getComputedStyle; |
| 1740 | // without resolution every style-based gate fails silently on Tailwind v4 builds. |
| 1741 | const fontSizeRaw = customPropMap ? resolveVarRefs(sibStyle.fontSize, customPropMap) : sibStyle.fontSize; |
| 1742 | const fontWeightRaw = customPropMap ? resolveVarRefs(sibStyle.fontWeight, customPropMap) : sibStyle.fontWeight; |
| 1743 | const letterSpacingRaw = customPropMap ? resolveVarRefs(sibStyle.letterSpacing, customPropMap) : sibStyle.letterSpacing; |
| 1744 | const colorRaw = customPropMap ? resolveVarRefs(sibStyle.color, customPropMap) : sibStyle.color; |
| 1745 | const headingFontSizeRaw = customPropMap ? resolveVarRefs(style.fontSize, customPropMap) : style.fontSize; |
| 1746 | const siblingFontSize = parseFloat(fontSizeRaw) || 0; |
| 1747 | // resolveLengthPx returns null for 'normal' / 'auto'; coerce to 0 so the |
| 1748 | // gate falls through cleanly. jsdom returns letter-spacing verbatim |
| 1749 | // (e.g. '0.15em'), unlike real browsers, so this conversion is required. |
| 1750 | return checkHeroEyebrow({ |
| 1751 | headingTag: tag, |
| 1752 | headingText: el.textContent || '', |
| 1753 | headingFontSize: parseFloat(headingFontSizeRaw) || 0, |
| 1754 | siblingTag: sibling.tagName.toLowerCase(), |
| 1755 | siblingText: sibling.textContent || '', |
| 1756 | siblingTextTransform: sibStyle.textTransform || '', |
| 1757 | siblingFontSize, |
| 1758 | siblingLetterSpacing: resolveLengthPx(letterSpacingRaw, siblingFontSize) || 0, |
| 1759 | siblingFontWeight: fontWeightRaw || '', |
| 1760 | siblingColor: colorRaw || '', |
| 1761 | }); |
| 1762 | } |
| 1763 | |
| 1764 | function checkRepeatedSectionKickersFromDoc(doc, win) { |
| 1765 | const candidates = collectRepeatedSectionKickerCandidates( |
| 1766 | doc, |
| 1767 | (el) => win.getComputedStyle(el), |
| 1768 | (value, fontSize) => resolveLengthPx(value, fontSize) || 0, |
| 1769 | ); |
| 1770 | return checkRepeatedSectionKickers({ candidates }); |
| 1771 | } |
| 1772 | |
| 1773 | function checkElementMotion(tag, style) { |
| 1774 | return checkMotion({ |
| 1775 | tag, |
| 1776 | transitionProperty: style.transitionProperty || '', |
| 1777 | animationName: style.animationName || '', |
| 1778 | timingFunctions: [style.animationTimingFunction, style.transitionTimingFunction].filter(Boolean).join(' '), |
| 1779 | classList: '', |
| 1780 | }); |
| 1781 | } |
| 1782 | |
| 1783 | function checkElementGlow(tag, style, effectiveBg) { |
| 1784 | if (!style.boxShadow || style.boxShadow === 'none') return []; |
| 1785 | return checkGlow({ tag, boxShadow: style.boxShadow, effectiveBg }); |
| 1786 | } |
| 1787 | |
| 1788 | // ─── Section 6: Page-Level Checks ─────────────────────────────────────────── |
| 1789 | |
| 1790 | // Browser page-level checks — use document/getComputedStyle globals |
| 1791 | |
| 1792 | function checkTypography() { |
| 1793 | const findings = []; |
| 1794 | |
| 1795 | // Walk actual text-bearing elements and tally font usage by *computed style*. |
| 1796 | // This is much more accurate than scanning CSS rules — it ignores rules that |
| 1797 | // exist in the stylesheet but apply to nothing (e.g. demo classes showing |
| 1798 | // anti-patterns), and counts what the user actually sees. |
| 1799 | const fontUsage = new Map(); // primary font name → count of elements |
| 1800 | let totalTextElements = 0; |
| 1801 | for (const el of document.querySelectorAll('p, h1, h2, h3, h4, h5, h6, li, td, th, dd, blockquote, figcaption, a, button, label, span')) { |
| 1802 | // Skip impeccable's own elements |
| 1803 | if (el.closest && el.closest('.impeccable-overlay, .impeccable-label, .impeccable-banner, .impeccable-tooltip')) continue; |
| 1804 | // Only count elements that actually have visible direct text |
| 1805 | const hasText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 0); |
| 1806 | if (!hasText) continue; |
| 1807 | const style = getComputedStyle(el); |
| 1808 | const ff = style.fontFamily; |
| 1809 | if (!ff) continue; |
| 1810 | const stack = ff.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase()); |
| 1811 | const primary = stack.find(f => f && !GENERIC_FONTS.has(f)); |
| 1812 | if (!primary) continue; |
| 1813 | fontUsage.set(primary, (fontUsage.get(primary) || 0) + 1); |
| 1814 | totalTextElements++; |
| 1815 | } |
| 1816 | |
| 1817 | if (totalTextElements >= 20) { |
| 1818 | // A font is "primary" if it's used by at least 15% of text elements |
| 1819 | const PRIMARY_THRESHOLD = 0.15; |
| 1820 | for (const [font, count] of fontUsage) { |
| 1821 | const share = count / totalTextElements; |
| 1822 | if (share < PRIMARY_THRESHOLD) continue; |
| 1823 | if (!OVERUSED_FONTS.has(font)) continue; |
| 1824 | if (isBrandFontOnOwnDomain(font)) continue; |
| 1825 | findings.push({ type: 'overused-font', detail: `Primary font: ${font} (${Math.round(share * 100)}% of text)` }); |
| 1826 | } |
| 1827 | |
| 1828 | // Single-font check: only one distinct primary font across all text |
| 1829 | if (fontUsage.size === 1) { |
| 1830 | const only = [...fontUsage.keys()][0]; |
| 1831 | findings.push({ type: 'single-font', detail: `only font used is ${only}` }); |
| 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | const sizes = new Set(); |
| 1836 | for (const el of document.querySelectorAll('h1,h2,h3,h4,h5,h6,p,span,a,li,td,th,label,button,div')) { |
| 1837 | const fs = parseFloat(getComputedStyle(el).fontSize); |
| 1838 | if (fs > 0 && fs < 200) sizes.add(Math.round(fs * 10) / 10); |
| 1839 | } |
| 1840 | if (sizes.size >= 3) { |
| 1841 | const sorted = [...sizes].sort((a, b) => a - b); |
| 1842 | const ratio = sorted[sorted.length - 1] / sorted[0]; |
| 1843 | if (ratio < 2.0) { |
| 1844 | findings.push({ type: 'flat-type-hierarchy', detail: `Sizes: ${sorted.map(s => s + 'px').join(', ')} (ratio ${ratio.toFixed(1)}:1)` }); |
| 1845 | } |
| 1846 | } |
| 1847 | |
| 1848 | return findings; |
| 1849 | } |
| 1850 | |
| 1851 | function isCardLikeDOM(el) { |
| 1852 | const tag = el.tagName.toLowerCase(); |
| 1853 | if (SAFE_TAGS.has(tag) || ['input','select','textarea','img','video','canvas','picture'].includes(tag)) return false; |
| 1854 | const style = getComputedStyle(el); |
| 1855 | const cls = el.getAttribute('class') || ''; |
| 1856 | const hasShadow = (style.boxShadow && style.boxShadow !== 'none') || /\bshadow(?:-sm|-md|-lg|-xl|-2xl)?\b/.test(cls); |
| 1857 | const hasBorder = /\bborder\b/.test(cls); |
| 1858 | const hasRadius = parseFloat(style.borderRadius) > 0 || /\brounded(?:-sm|-md|-lg|-xl|-2xl|-full)?\b/.test(cls); |
| 1859 | const hasBg = (style.backgroundColor && style.backgroundColor !== 'rgba(0, 0, 0, 0)') || /\bbg-(?:white|gray-\d+|slate-\d+)\b/.test(cls); |
| 1860 | return isCardLikeFromProps(hasShadow, hasBorder, hasRadius, hasBg); |
| 1861 | } |
| 1862 | |
| 1863 | function checkLayout() { |
| 1864 | const findings = []; |
| 1865 | const flaggedEls = new Set(); |
| 1866 | |
| 1867 | for (const el of document.querySelectorAll('*')) { |
| 1868 | if (!isCardLikeDOM(el) || flaggedEls.has(el)) continue; |
| 1869 | const cls = el.getAttribute('class') || ''; |
| 1870 | const style = getComputedStyle(el); |
| 1871 | if (style.position === 'absolute' || style.position === 'fixed') continue; |
| 1872 | if (/\b(?:dropdown|popover|tooltip|menu|modal|dialog)\b/i.test(cls)) continue; |
| 1873 | if ((el.textContent?.trim().length || 0) < 10) continue; |
| 1874 | const rect = el.getBoundingClientRect(); |
| 1875 | if (rect.width < 50 || rect.height < 30) continue; |
| 1876 | |
| 1877 | let parent = el.parentElement; |
| 1878 | while (parent) { |
| 1879 | if (isCardLikeDOM(parent)) { flaggedEls.add(el); break; } |
| 1880 | parent = parent.parentElement; |
| 1881 | } |
| 1882 | } |
| 1883 | |
| 1884 | for (const el of flaggedEls) { |
| 1885 | let isAncestor = false; |
| 1886 | for (const other of flaggedEls) { |
| 1887 | if (other !== el && el.contains(other)) { isAncestor = true; break; } |
| 1888 | } |
| 1889 | if (!isAncestor) findings.push({ type: 'nested-cards', detail: 'Card inside card', el }); |
| 1890 | } |
| 1891 | |
| 1892 | return findings; |
| 1893 | } |
| 1894 | |
| 1895 | // Node page-level checks — take document/window as parameters |
| 1896 | |
| 1897 | function checkPageTypography(doc, win) { |
| 1898 | const findings = []; |
| 1899 | |
| 1900 | const fonts = new Set(); |
| 1901 | const overusedFound = new Set(); |
| 1902 | |
| 1903 | for (const sheet of doc.styleSheets) { |
| 1904 | let rules; |
| 1905 | try { rules = sheet.cssRules || sheet.rules; } catch { continue; } |
| 1906 | if (!rules) continue; |
| 1907 | for (const rule of rules) { |
| 1908 | if (rule.type !== 1) continue; |
| 1909 | const ff = rule.style?.fontFamily; |
| 1910 | if (!ff) continue; |
| 1911 | const stack = ff.split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase()); |
| 1912 | const primary = stack.find(f => f && !GENERIC_FONTS.has(f)); |
| 1913 | if (primary) { |
| 1914 | fonts.add(primary); |
| 1915 | if (OVERUSED_FONTS.has(primary)) overusedFound.add(primary); |
| 1916 | } |
| 1917 | } |
| 1918 | } |
| 1919 | |
| 1920 | // Check Google Fonts links in HTML |
| 1921 | const html = doc.documentElement?.outerHTML || ''; |
| 1922 | const gfRe = /fonts\.googleapis\.com\/css2?\?family=([^&"'\s]+)/gi; |
| 1923 | let m; |
| 1924 | while ((m = gfRe.exec(html)) !== null) { |
| 1925 | const families = m[1].split('|').map(f => f.split(':')[0].replace(/\+/g, ' ').toLowerCase()); |
| 1926 | for (const f of families) { |
| 1927 | fonts.add(f); |
| 1928 | if (OVERUSED_FONTS.has(f)) overusedFound.add(f); |
| 1929 | } |
| 1930 | } |
| 1931 | |
| 1932 | // Also parse raw HTML/style content for font-family (jsdom may not expose all via CSSOM) |
| 1933 | const ffRe = /font-family\s*:\s*([^;}]+)/gi; |
| 1934 | let fm; |
| 1935 | while ((fm = ffRe.exec(html)) !== null) { |
| 1936 | for (const f of fm[1].split(',').map(f => f.trim().replace(/^['"]|['"]$/g, '').toLowerCase())) { |
| 1937 | if (f && !GENERIC_FONTS.has(f)) { |
| 1938 | fonts.add(f); |
| 1939 | if (OVERUSED_FONTS.has(f)) overusedFound.add(f); |
| 1940 | } |
| 1941 | } |
| 1942 | } |
| 1943 | |
| 1944 | for (const font of overusedFound) { |
| 1945 | findings.push({ id: 'overused-font', snippet: `Primary font: ${font}` }); |
| 1946 | } |
| 1947 | |
| 1948 | // Single font |
| 1949 | if (fonts.size === 1) { |
| 1950 | const els = doc.querySelectorAll('*'); |
| 1951 | if (els.length >= 20) { |
| 1952 | findings.push({ id: 'single-font', snippet: `only font used is ${[...fonts][0]}` }); |
| 1953 | } |
| 1954 | } |
| 1955 | |
| 1956 | // Flat type hierarchy |
| 1957 | const sizes = new Set(); |
| 1958 | const textEls = doc.querySelectorAll('h1, h2, h3, h4, h5, h6, p, span, a, li, td, th, label, button, div'); |
| 1959 | for (const el of textEls) { |
| 1960 | const fontSize = parseFloat(win.getComputedStyle(el).fontSize); |
| 1961 | // Filter out sub-8px values (jsdom doesn't resolve relative units properly) |
| 1962 | if (fontSize >= 8 && fontSize < 200) sizes.add(Math.round(fontSize * 10) / 10); |
| 1963 | } |
| 1964 | if (sizes.size >= 3) { |
| 1965 | const sorted = [...sizes].sort((a, b) => a - b); |
| 1966 | const ratio = sorted[sorted.length - 1] / sorted[0]; |
| 1967 | if (ratio < 2.0) { |
| 1968 | findings.push({ id: 'flat-type-hierarchy', snippet: `Sizes: ${sorted.map(s => s + 'px').join(', ')} (ratio ${ratio.toFixed(1)}:1)` }); |
| 1969 | } |
| 1970 | } |
| 1971 | |
| 1972 | return findings; |
| 1973 | } |
| 1974 | |
| 1975 | function isCardLike(el, win) { |
| 1976 | const tag = el.tagName.toLowerCase(); |
| 1977 | if (SAFE_TAGS.has(tag) || ['input', 'select', 'textarea', 'img', 'video', 'canvas', 'picture'].includes(tag)) return false; |
| 1978 | |
| 1979 | const style = win.getComputedStyle(el); |
| 1980 | const rawStyle = el.getAttribute?.('style') || ''; |
| 1981 | const cls = el.getAttribute?.('class') || ''; |
| 1982 | |
| 1983 | const hasShadow = (style.boxShadow && style.boxShadow !== 'none') || |
| 1984 | /\bshadow(?:-sm|-md|-lg|-xl|-2xl)?\b/.test(cls) || /box-shadow/i.test(rawStyle); |
| 1985 | const hasBorder = /\bborder\b/.test(cls); |
| 1986 | const widthPx = parseFloat(style.width) || 0; |
| 1987 | const hasRadius = resolveBorderRadiusPx(el, style, widthPx, win) > 0 || |
| 1988 | /\brounded(?:-sm|-md|-lg|-xl|-2xl|-full)?\b/.test(cls) || /border-radius/i.test(rawStyle); |
| 1989 | const hasBg = /\bbg-(?:white|gray-\d+|slate-\d+)\b/.test(cls) || |
| 1990 | /background(?:-color)?\s*:\s*(?!transparent)/i.test(rawStyle); |
| 1991 | |
| 1992 | return isCardLikeFromProps(hasShadow, hasBorder, hasRadius, hasBg); |
| 1993 | } |
| 1994 | |
| 1995 | function checkPageLayout(doc, win) { |
| 1996 | const findings = []; |
| 1997 | |
| 1998 | // Nested cards |
| 1999 | const allEls = doc.querySelectorAll('*'); |
| 2000 | const flaggedEls = new Set(); |
| 2001 | for (const el of allEls) { |
| 2002 | if (!isCardLike(el, win)) continue; |
| 2003 | if (flaggedEls.has(el)) continue; |
| 2004 | |
| 2005 | const tag = el.tagName.toLowerCase(); |
| 2006 | const cls = el.getAttribute?.('class') || ''; |
| 2007 | const rawStyle = el.getAttribute?.('style') || ''; |
| 2008 | |
| 2009 | if (['pre', 'code'].includes(tag)) continue; |
| 2010 | if (/\b(?:absolute|fixed)\b/.test(cls) || /position\s*:\s*(?:absolute|fixed)/i.test(rawStyle)) continue; |
| 2011 | if ((el.textContent?.trim().length || 0) < 10) continue; |
| 2012 | if (/\b(?:dropdown|popover|tooltip|menu|modal|dialog)\b/i.test(cls)) continue; |
| 2013 | |
| 2014 | // Walk up to find card-like ancestor |
| 2015 | let parent = el.parentElement; |
| 2016 | while (parent) { |
| 2017 | if (isCardLike(parent, win)) { |
| 2018 | flaggedEls.add(el); |
| 2019 | break; |
| 2020 | } |
| 2021 | parent = parent.parentElement; |
| 2022 | } |
| 2023 | } |
| 2024 | |
| 2025 | // Only report innermost nested cards |
| 2026 | for (const el of flaggedEls) { |
| 2027 | let isAncestorOfFlagged = false; |
| 2028 | for (const other of flaggedEls) { |
| 2029 | if (other !== el && el.contains(other)) { |
| 2030 | isAncestorOfFlagged = true; |
| 2031 | break; |
| 2032 | } |
| 2033 | } |
| 2034 | if (!isAncestorOfFlagged) { |
| 2035 | findings.push({ id: 'nested-cards', snippet: `Card inside card (${el.tagName.toLowerCase()})` }); |
| 2036 | } |
| 2037 | } |
| 2038 | |
| 2039 | return findings; |
| 2040 | } |
| 2041 | |
| 2042 | // ─── Cream / beige palette (the default "tasteful" AI surface) ──────────────── |
| 2043 | // A warm, lightly-tinted off-white page background — light, with R≥G≥B and a |
| 2044 | // small warm tint (not white, not a strong color). The current reflex surface. |
| 2045 | function isCreamColor(rgb) { |
| 2046 | if (!rgb) return false; |
| 2047 | const { r, g, b } = rgb; |
| 2048 | if (Math.min(r, g, b) < 209) return false; // must be light |
| 2049 | if (!(r >= g && g >= b)) return false; // warm ordering |
| 2050 | const warmth = r - b; |
| 2051 | return warmth >= 6 && warmth <= 48; // tinted, not white, not strong |
| 2052 | } |
| 2053 | |
| 2054 | // Tailwind background utilities that render as a warm off-white surface. The |
| 2055 | // static engine doesn't fetch Tailwind's CSS, so a `bg-amber-50` on <body> |
| 2056 | // resolves to nothing in computed style — catch it from the class list |
| 2057 | // instead. Candidate tokens map to their actual Tailwind hex and are still |
| 2058 | // filtered through isCreamColor, so neutral grays (stone) and over-saturated |
| 2059 | // shades drop out on their own. |
| 2060 | const TAILWIND_BG_HEX = { |
| 2061 | 'bg-amber-50': '#fffbeb', 'bg-amber-100': '#fef3c7', |
| 2062 | 'bg-orange-50': '#fff7ed', 'bg-orange-100': '#ffedd5', |
| 2063 | 'bg-yellow-50': '#fefce8', |
| 2064 | 'bg-stone-50': '#fafaf9', 'bg-stone-100': '#f5f5f4', 'bg-stone-200': '#e7e5e4', |
| 2065 | }; |
| 2066 | |
| 2067 | function creamFromClassList(cls) { |
| 2068 | if (!cls) return null; |
| 2069 | // Arbitrary value: bg-[#f5f0e6] / bg-[rgb(245_240_230)] (underscores = spaces). |
| 2070 | const arb = cls.match(/\bbg-\[([^\]]+)\]/); |
| 2071 | if (arb && isCreamColor(parseAnyColor(arb[1].replace(/_/g, ' ')))) return `bg-[${arb[1]}]`; |
| 2072 | // Named warm-light utilities. |
| 2073 | for (const [tok, hex] of Object.entries(TAILWIND_BG_HEX)) { |
| 2074 | if (new RegExp(`(^|\\s)${tok}($|\\s)`).test(cls) && isCreamColor(parseAnyColor(hex))) return tok; |
| 2075 | } |
| 2076 | return null; |
| 2077 | } |
| 2078 | |
| 2079 | function checkCreamPalette(doc, win) { |
| 2080 | const findings = []; |
| 2081 | const body = doc.body || (doc.querySelector ? doc.querySelector('body') : null); |
| 2082 | if (!body) return findings; |
| 2083 | const html = doc.documentElement; |
| 2084 | const getCS = (el) => (win ? win.getComputedStyle(el) : getComputedStyle(el)); |
| 2085 | |
| 2086 | // 1. Computed background — covers inline / <style> / linked CSS, and Tailwind |
| 2087 | // once it's actually rendered (browser path). |
| 2088 | let bg = readOwnBackgroundColor(body, getCS(body)); |
| 2089 | if (!bg || bg.a === 0) { |
| 2090 | if (html) bg = readOwnBackgroundColor(html, getCS(html)); |
| 2091 | } |
| 2092 | if (isCreamColor(bg)) { |
| 2093 | findings.push({ id: 'cream-palette', snippet: `cream/beige page background rgb(${bg.r}, ${bg.g}, ${bg.b})` }); |
| 2094 | return findings; |
| 2095 | } |
| 2096 | |
| 2097 | // 2. Tailwind class fallback — for the static path, where utility classes |
| 2098 | // never resolve to computed CSS. |
| 2099 | for (const el of [body, html]) { |
| 2100 | const tok = creamFromClassList(el && el.getAttribute ? el.getAttribute('class') : ''); |
| 2101 | if (tok) { |
| 2102 | findings.push({ id: 'cream-palette', snippet: `cream/beige page background (Tailwind ${tok})` }); |
| 2103 | break; |
| 2104 | } |
| 2105 | } |
| 2106 | return findings; |
| 2107 | } |
| 2108 | |
| 2109 | // ─── Oversized hero headline ──────────────────────────────────────────────── |
| 2110 | // Fires when a *long* headline is set at display size, so a full sentence ends |
| 2111 | // up dominating the viewport. A punchy one- or two-word headline at the same |
| 2112 | // size is a legitimate stylistic choice and must pass — length, not size |
| 2113 | // alone, is the tell. |
| 2114 | const OVERSIZED_H1_FONT_PX = 72; |
| 2115 | const OVERSIZED_H1_MIN_CHARS = 40; |
| 2116 | function checkOversizedH1({ tag, fontSize, headingText }) { |
| 2117 | if (tag !== 'h1') return []; |
| 2118 | const textLen = headingText.length; |
| 2119 | if (fontSize >= OVERSIZED_H1_FONT_PX && textLen >= OVERSIZED_H1_MIN_CHARS) { |
| 2120 | return [{ id: 'oversized-h1', snippet: `${Math.round(fontSize)}px h1, ${textLen} chars "${headingText.slice(0, 60)}"` }]; |
| 2121 | } |
| 2122 | return []; |
| 2123 | } |
| 2124 | |
| 2125 | function checkElementOversizedH1(el, style, tag, window) { |
| 2126 | if (tag !== 'h1') return []; |
| 2127 | const fontSize = resolveFontSizePx(el, window); |
| 2128 | const headingText = (el.textContent || '').trim().replace(/\s+/g, ' '); |
| 2129 | return checkOversizedH1({ tag, fontSize, headingText }); |
| 2130 | } |
| 2131 | |
| 2132 | function checkElementOversizedH1DOM(el) { |
| 2133 | const tag = el.tagName.toLowerCase(); |
| 2134 | if (tag !== 'h1') return []; |
| 2135 | const style = getComputedStyle(el); |
| 2136 | const fontSize = parseFloat(style.fontSize) || 0; |
| 2137 | const headingText = (el.textContent || '').trim().replace(/\s+/g, ' '); |
| 2138 | return checkOversizedH1({ tag, fontSize, headingText }); |
| 2139 | } |
| 2140 | |
| 2141 | // ─── GPT tell: hairline border + wide diffuse shadow (gated --gpt) ──────────── |
| 2142 | function shadowMaxBlurPx(boxShadow) { |
| 2143 | if (!boxShadow || boxShadow === 'none') return 0; |
| 2144 | let maxBlur = 0; |
| 2145 | // Split into layers on commas not inside parentheses (rgba(...) etc.). |
| 2146 | for (const layer of boxShadow.split(/,(?![^()]*\))/)) { |
| 2147 | // Strip colors and keywords (rgba()/hsl()/hex/named/inset/px), leaving the |
| 2148 | // ordered length tokens: offsetX offsetY blur [spread]. Static jsdom keeps |
| 2149 | // unitless zeros ("0 0 24px"); browsers normalize to px ("0px 0px 24px") — |
| 2150 | // both reduce to the same numbers here. |
| 2151 | const cleaned = layer.replace(/rgba?\([^)]*\)|hsla?\([^)]*\)|#[0-9a-f]+|\b[a-z]+\b/gi, ' '); |
| 2152 | const nums = [...cleaned.matchAll(/-?\d*\.?\d+/g)].map(m => parseFloat(m[0])); |
| 2153 | if (nums.length >= 3) maxBlur = Math.max(maxBlur, nums[2]); |
| 2154 | } |
| 2155 | return maxBlur; |
| 2156 | } |
| 2157 | |
| 2158 | function checkGptThinBorderWideShadow({ borderWidths, boxShadow }) { |
| 2159 | const maxBorder = Math.max(0, ...borderWidths); |
| 2160 | const hasThinBorder = maxBorder > 0 && maxBorder <= 1.5; |
| 2161 | const blur = shadowMaxBlurPx(boxShadow); |
| 2162 | if (hasThinBorder && blur >= 16) { |
| 2163 | return [{ id: 'gpt-thin-border-wide-shadow', snippet: `${maxBorder}px border + ${Math.round(blur)}px shadow blur` }]; |
| 2164 | } |
| 2165 | return []; |
| 2166 | } |
| 2167 | |
| 2168 | function borderWidthsFromStyle(style) { |
| 2169 | return [ |
| 2170 | parseFloat(style.borderTopWidth) || 0, |
| 2171 | parseFloat(style.borderRightWidth) || 0, |
| 2172 | parseFloat(style.borderBottomWidth) || 0, |
| 2173 | parseFloat(style.borderLeftWidth) || 0, |
| 2174 | ]; |
| 2175 | } |
| 2176 | |
| 2177 | function checkElementGptBorderShadow(el, style) { |
| 2178 | return checkGptThinBorderWideShadow({ borderWidths: borderWidthsFromStyle(style), boxShadow: style.boxShadow || '' }); |
| 2179 | } |
| 2180 | |
| 2181 | function checkElementGptBorderShadowDOM(el) { |
| 2182 | const style = getComputedStyle(el); |
| 2183 | return checkGptThinBorderWideShadow({ borderWidths: borderWidthsFromStyle(style), boxShadow: style.boxShadow || '' }); |
| 2184 | } |
| 2185 | |
| 2186 | // ─── Clipped overflow container ─────────────────────────────────────────────── |
| 2187 | // A clipping container (overflow hidden/clip, not a scroll region) wrapping an |
| 2188 | // absolutely/fixed-positioned descendant clips popovers/menus that must escape. |
| 2189 | function classSelector(el) { |
| 2190 | const cls = (el.getAttribute ? el.getAttribute('class') : el.className) || ''; |
| 2191 | const tokens = String(cls).trim().split(/\s+/).filter(Boolean); |
| 2192 | const tag = el.tagName ? el.tagName.toLowerCase() : 'el'; |
| 2193 | return tokens.length ? `${tag}.${tokens.join('.')}` : tag; |
| 2194 | } |
| 2195 | |
| 2196 | function checkClippedOverflow(el, style, getStyle) { |
| 2197 | const clips = (v) => v === 'hidden' || v === 'clip'; |
| 2198 | const scrolls = (v) => v === 'auto' || v === 'scroll'; |
| 2199 | const ox = style.overflowX || '', oy = style.overflowY || '', ov = style.overflow || ''; |
| 2200 | const anyClip = clips(ox) || clips(oy) || clips(ov); |
| 2201 | const anyScroll = scrolls(ox) || scrolls(oy) || scrolls(ov); |
| 2202 | if (!anyClip || anyScroll) return []; |
| 2203 | if (!el.querySelectorAll) return []; |
| 2204 | for (const child of el.querySelectorAll('*')) { |
| 2205 | const pos = (getStyle(child).position) || ''; |
| 2206 | if (pos === 'absolute' || pos === 'fixed') { |
| 2207 | return [{ id: 'clipped-overflow-container', snippet: `${classSelector(el)} clips a positioned child` }]; |
| 2208 | } |
| 2209 | } |
| 2210 | return []; |
| 2211 | } |
| 2212 | |
| 2213 | function checkElementClippedOverflow(el, style, tag, window) { |
| 2214 | return checkClippedOverflow(el, style, (n) => window.getComputedStyle(n)); |
| 2215 | } |
| 2216 | |
| 2217 | function checkElementClippedOverflowDOM(el) { |
| 2218 | const style = getComputedStyle(el); |
| 2219 | return checkClippedOverflow(el, style, (n) => getComputedStyle(n)); |
| 2220 | } |
| 2221 | |
| 2222 | // ─── Text overflow (browser-only: needs scrollWidth/clientWidth) ────────────── |
| 2223 | const TEXT_OVERFLOW_SKIP_TAGS = new Set(['pre', 'code', 'textarea', 'svg', 'canvas', 'select', 'option', 'marquee']); |
| 2224 | |
| 2225 | function checkElementTextOverflowDOM(el) { |
| 2226 | const tag = el.tagName.toLowerCase(); |
| 2227 | if (TEXT_OVERFLOW_SKIP_TAGS.has(tag)) return []; |
| 2228 | // Only the element that actually owns overflowing text — not its ancestors, |
| 2229 | // which inherit a wider scrollWidth from the spilling descendant. |
| 2230 | const hasDirectText = [...el.childNodes].some(n => n.nodeType === 3 && n.textContent.trim().length > 0); |
| 2231 | if (!hasDirectText) return []; |
| 2232 | const style = getComputedStyle(el); |
| 2233 | const isScrollRegion = (s) => /(auto|scroll)/.test(s.overflowX || '') || /(auto|scroll)/.test(s.overflow || ''); |
| 2234 | if (isScrollRegion(style)) return []; |
| 2235 | // A scrollable ancestor means this overflow is intentional and scrollable. |
| 2236 | for (let p = el.parentElement; p; p = p.parentElement) { |
| 2237 | if (isScrollRegion(getComputedStyle(p))) return []; |
| 2238 | } |
| 2239 | const delta = el.scrollWidth - el.clientWidth; |
| 2240 | if (el.clientWidth > 0 && delta >= 16) { |
| 2241 | return [{ id: 'text-overflow', snippet: `${classSelector(el)} overflows its box by ${Math.round(delta)}px` }]; |
| 2242 | } |
| 2243 | return []; |
| 2244 | } |
| 2245 | |
| 2246 | export { |
| 2247 | checkBorders, |
| 2248 | isEmojiOnlyText, |
| 2249 | checkColors, |
| 2250 | isCardLikeFromProps, |
| 2251 | checkIconTile, |
| 2252 | resolveSerif, |
| 2253 | checkItalicSerif, |
| 2254 | isAccentColor, |
| 2255 | checkHeroEyebrow, |
| 2256 | checkRepeatedSectionKickers, |
| 2257 | checkMotion, |
| 2258 | checkGlow, |
| 2259 | checkHtmlPatterns, |
| 2260 | readOwnBackgroundColor, |
| 2261 | resolveBackground, |
| 2262 | resolveGradientStops, |
| 2263 | parseRadiusToPx, |
| 2264 | resolveBorderRadiusPx, |
| 2265 | checkElementBordersDOM, |
| 2266 | checkElementColorsDOM, |
| 2267 | checkElementIconTileDOM, |
| 2268 | checkElementItalicSerifDOM, |
| 2269 | checkElementHeroEyebrowDOM, |
| 2270 | buildCustomPropMap, |
| 2271 | resolveVarRefs, |
| 2272 | oklchToRgb, |
| 2273 | parseAnyColor, |
| 2274 | parseColorResolved, |
| 2275 | cleanInlineText, |
| 2276 | isRepeatedKickerCandidate, |
| 2277 | collectRepeatedSectionKickerCandidates, |
| 2278 | checkRepeatedSectionKickersDOM, |
| 2279 | checkElementMotionDOM, |
| 2280 | checkElementGlowDOM, |
| 2281 | checkElementAIPaletteDOM, |
| 2282 | resolveFontSizePx, |
| 2283 | resolveLengthPx, |
| 2284 | checkQuality, |
| 2285 | checkElementQualityDOM, |
| 2286 | checkPageQualityFromDoc, |
| 2287 | checkPageQualityDOM, |
| 2288 | checkElementQuality, |
| 2289 | checkElementBorders, |
| 2290 | checkElementColors, |
| 2291 | checkElementIconTile, |
| 2292 | checkElementItalicSerif, |
| 2293 | checkElementHeroEyebrow, |
| 2294 | checkRepeatedSectionKickersFromDoc, |
| 2295 | checkElementMotion, |
| 2296 | checkElementGlow, |
| 2297 | checkTypography, |
| 2298 | isCardLikeDOM, |
| 2299 | checkLayout, |
| 2300 | checkPageTypography, |
| 2301 | isCardLike, |
| 2302 | checkPageLayout, |
| 2303 | isCreamColor, |
| 2304 | checkCreamPalette, |
| 2305 | checkOversizedH1, |
| 2306 | checkElementOversizedH1, |
| 2307 | checkElementOversizedH1DOM, |
| 2308 | shadowMaxBlurPx, |
| 2309 | checkGptThinBorderWideShadow, |
| 2310 | checkElementGptBorderShadow, |
| 2311 | checkElementGptBorderShadowDOM, |
| 2312 | checkClippedOverflow, |
| 2313 | checkElementClippedOverflow, |
| 2314 | checkElementClippedOverflowDOM, |
| 2315 | checkElementTextOverflowDOM, |
| 2316 | }; |
| 2317 |