opencode-agent-kit
Version:
Multi-stack OpenCode agent toolkit — 33+ specialized AI agents, 200+ skills, 46 commands, 8 MCP servers (Nuxt, React, Node.js, Laravel, CI3, Android, Flutter, DevOps, SEO, SonarQube, and more)
1,938 lines • 76.8 kB
JavaScript
const IS_BROWSER = typeof window !== 'undefined';
// ─── Section 7: Browser UI (IS_BROWSER only) ────────────────────────────────
if (IS_BROWSER) {
// Detect extension mode via the script tag's data attribute or the document element fallback.
// currentScript is reliable for synchronously-executing scripts (which our IIFE is).
const _myScript = document.currentScript;
const EXTENSION_MODE = (_myScript && _myScript.dataset.impeccableExtension === 'true')
|| document.documentElement.dataset.impeccableExtension === 'true';
// Kinpaku gold — pinned to the site's brand token (see
// site/styles/kinpaku-tokens.css --ks-kinpaku). Keep this in sync with
// the picker's C.brand in skill/scripts/live-browser.js and the kit's
// picker section in site/styles/kinpaku-kit.css.
//
// One color across both light and dark host pages. The outline is a
// 2px gesture pointing at an element + a labeled tag — it's a marker,
// not body text, so it doesn't need WCAG AA against the page. The
// label text inside the gold tag is dark (LABEL_INK) which has ~16:1
// against the leaf gold, so reading the rule name is solid in both
// modes. Hover deepens the gold (preserves chroma — never drops it,
// dropping chroma washes the gold into a sand/olive tone).
const BRAND_COLOR = 'oklch(84% 0.19 80.46)';
const BRAND_COLOR_HOVER = 'oklch(74% 0.18 80)';
const LABEL_INK = 'oklch(4% 0.004 95)';
const LABEL_BG = BRAND_COLOR;
const OUTLINE_COLOR = BRAND_COLOR;
// Inject hover styles via CSS (more reliable than JS event listeners)
const styleEl = document.createElement('style');
styleEl.textContent = `
@keyframes impeccable-reveal {
from { opacity: 0; }
to { opacity: 1; }
}
.impeccable-overlay:not(.impeccable-banner) {
pointer-events: none;
outline: 2px solid ${OUTLINE_COLOR};
border-radius: 4px;
transition: outline-color 0.15s ease;
animation: impeccable-reveal 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
animation-play-state: paused;
border-top-left-radius: 0;
}
.impeccable-overlay.impeccable-visible {
animation-play-state: running;
}
.impeccable-overlay.impeccable-hover {
outline-color: ${BRAND_COLOR_HOVER};
z-index: 100001 !important;
}
.impeccable-overlay.impeccable-hover .impeccable-label {
background: ${BRAND_COLOR_HOVER};
}
.impeccable-overlay.impeccable-spotlight {
z-index: 100002 !important;
}
.impeccable-overlay.impeccable-spotlight-dimmed {
opacity: 0.15 !important;
animation: none !important;
filter: blur(3px);
}
.impeccable-spotlight-backdrop {
position: fixed;
top: 0; left: 0; right: 0; bottom: 0;
backdrop-filter: blur(3px) brightness(0.6);
-webkit-backdrop-filter: blur(3px) brightness(0.6);
pointer-events: none;
z-index: 99998;
opacity: 0;
outline: none !important;
animation: none !important;
}
.impeccable-spotlight-backdrop.impeccable-visible {
opacity: 1;
}
.impeccable-hidden .impeccable-overlay${EXTENSION_MODE ? '' : ':not(.impeccable-banner)'} {
display: none !important;
}
`;
(document.head || document.documentElement).appendChild(styleEl);
// Spotlight backdrop element (created lazily on first use)
let spotlightBackdrop = null;
let spotlightTarget = null;
function getSpotlightBackdrop() {
if (!spotlightBackdrop) {
spotlightBackdrop = document.createElement('div');
spotlightBackdrop.className = 'impeccable-spotlight-backdrop';
document.body.appendChild(spotlightBackdrop);
}
return spotlightBackdrop;
}
function updateSpotlightClipPath() {
if (!spotlightBackdrop || !spotlightTarget) return;
const r = spotlightTarget.getBoundingClientRect();
// Match the overlay's outer edge: element rect + 4px (2px overlay offset + 2px outline width)
const inset = 4;
const radius = 6; // outline border-radius (4) + outline width (2)
const x1 = r.left - inset;
const y1 = r.top - inset;
const x2 = r.right + inset;
const y2 = r.bottom + inset;
const vw = window.innerWidth;
const vh = window.innerHeight;
// Outer rect + rounded inner rect (evenodd creates a hole)
const path = `M0 0H${vw}V${vh}H0Z M${x1 + radius} ${y1}H${x2 - radius}A${radius} ${radius} 0 0 1 ${x2} ${y1 + radius}V${y2 - radius}A${radius} ${radius} 0 0 1 ${x2 - radius} ${y2}H${x1 + radius}A${radius} ${radius} 0 0 1 ${x1} ${y2 - radius}V${y1 + radius}A${radius} ${radius} 0 0 1 ${x1 + radius} ${y1}Z`;
spotlightBackdrop.style.clipPath = `path(evenodd, "${path}")`;
}
function showSpotlight(target) {
if (!target || !target.getBoundingClientRect) return;
// Respect the spotlightBlur setting: if disabled, don't show the backdrop
if (window.__IMPECCABLE_CONFIG__?.spotlightBlur === false) {
spotlightTarget = target;
return;
}
spotlightTarget = target;
const bd = getSpotlightBackdrop();
updateSpotlightClipPath();
bd.classList.add('impeccable-visible');
}
function hideSpotlight() {
spotlightTarget = null;
if (spotlightBackdrop) spotlightBackdrop.classList.remove('impeccable-visible');
}
function isInViewport(el) {
const r = el.getBoundingClientRect();
return r.top >= 0 && r.left >= 0 && r.bottom <= window.innerHeight && r.right <= window.innerWidth;
}
// Reposition spotlight on scroll/resize
window.addEventListener('scroll', () => {
if (spotlightTarget) updateSpotlightClipPath();
}, { passive: true });
window.addEventListener('resize', () => {
if (spotlightTarget) updateSpotlightClipPath();
});
const overlays = [];
const TYPE_LABELS = {};
const RULE_CATEGORY = {};
for (const ap of ANTIPATTERNS) {
TYPE_LABELS[ap.id] = ap.name.toLowerCase();
RULE_CATEGORY[ap.id] = ap.category || 'quality';
}
function isInFixedContext(el) {
let p = el;
while (p && p !== document.body) {
if (getComputedStyle(p).position === 'fixed') return true;
p = p.parentElement;
}
return false;
}
function positionOverlay(overlay) {
const el = overlay._targetEl;
if (!el) return;
const rect = el.getBoundingClientRect();
if (overlay._isFixed) {
// Viewport-relative coords for fixed targets
overlay.style.top = `${rect.top - 2}px`;
overlay.style.left = `${rect.left - 2}px`;
} else {
// Document-relative coords for normal targets
overlay.style.top = `${rect.top + scrollY - 2}px`;
overlay.style.left = `${rect.left + scrollX - 2}px`;
}
overlay.style.width = `${rect.width + 4}px`;
overlay.style.height = `${rect.height + 4}px`;
}
function repositionOverlays() {
for (const o of overlays) {
if (!o._targetEl || o.classList.contains('impeccable-banner')) continue;
// Skip overlays whose target is currently hidden (display: none on the overlay)
if (o.style.display === 'none') continue;
positionOverlay(o);
}
}
let resizeRAF;
const onResize = () => {
cancelAnimationFrame(resizeRAF);
resizeRAF = requestAnimationFrame(repositionOverlays);
};
window.addEventListener('resize', onResize);
// Reposition on scroll too -- catches sticky/parallax shifts
window.addEventListener('scroll', onResize, { passive: true });
// Reposition when body resizes (lazy-loaded images, dynamic content, fonts loading)
if (typeof ResizeObserver !== 'undefined') {
const bodyResizeObserver = new ResizeObserver(onResize);
bodyResizeObserver.observe(document.body);
}
// Track target element visibility via IntersectionObserver.
// Uses a huge rootMargin so all *rendered* elements count as intersecting,
// while display:none / closed <details> / hidden modals etc. do not.
// This is event-driven -- no polling needed.
let overlayIndex = 0;
const visibilityObserver = new IntersectionObserver((entries) => {
for (const entry of entries) {
const overlay = entry.target._impeccableOverlay;
if (!overlay) continue;
if (entry.isIntersecting) {
overlay.style.display = '';
positionOverlay(overlay);
if (!overlay._revealed) {
overlay._revealed = true;
if (firstScanDone) {
// Subsequent reveals (re-scans, scroll-into-view): instant, no animation
overlay.style.animation = 'none';
} else {
// Initial scan: staggered cascade reveal
overlay.style.animationDelay = `${Math.min((overlay._staggerIndex || 0) * 60, 600)}ms`;
}
requestAnimationFrame(() => {
overlay.classList.add('impeccable-visible');
if (overlay._checkLabel) overlay._checkLabel();
});
}
} else {
overlay.style.display = 'none';
}
}
}, { rootMargin: '99999px' });
function detachOverlay(overlay) {
if (!overlay) return;
if (typeof overlay._cleanup === 'function') {
try { overlay._cleanup(); } catch { /* best effort overlay teardown */ }
}
if (overlay._targetEl && overlay._targetEl._impeccableOverlay === overlay) {
visibilityObserver.unobserve(overlay._targetEl);
delete overlay._targetEl._impeccableOverlay;
}
const idx = overlays.indexOf(overlay);
if (idx >= 0) overlays.splice(idx, 1);
overlay.remove();
}
// Reposition overlays after CSS transitions end (e.g. reveal animations).
// Listens at document level so it catches transitions on ancestor elements
// (the transform may be on a parent, not the flagged element itself).
document.addEventListener('transitionend', (e) => {
if (e.propertyName !== 'transform') return;
for (const o of overlays) {
if (!o._targetEl || o.classList.contains('impeccable-banner') || o.style.display === 'none') continue;
if (e.target === o._targetEl || e.target.contains(o._targetEl)) {
positionOverlay(o);
}
}
});
const highlight = function(el, findings) {
if (el._impeccableOverlay) detachOverlay(el._impeccableOverlay);
const hasSlop = findings.some(f => RULE_CATEGORY[f.type || f.id] === 'slop');
const fixed = isInFixedContext(el);
const rect = el.getBoundingClientRect();
const outline = document.createElement('div');
outline.className = 'impeccable-overlay';
outline._targetEl = el;
outline._isFixed = fixed;
Object.assign(outline.style, {
position: fixed ? 'fixed' : 'absolute',
top: fixed ? `${rect.top - 2}px` : `${rect.top + scrollY - 2}px`,
left: fixed ? `${rect.left - 2}px` : `${rect.left + scrollX - 2}px`,
width: `${rect.width + 4}px`, height: `${rect.height + 4}px`,
zIndex: '99999', boxSizing: 'border-box',
});
// Build per-finding label entries: ✦ prefix for slop
const entries = findings.map(f => {
const name = TYPE_LABELS[f.type || f.id] || f.type || f.id;
const prefix = RULE_CATEGORY[f.type || f.id] === 'slop' ? '\u2726 ' : '';
return { name: prefix + name, detail: f.detail || f.snippet };
});
const allText = entries.map(e => e.name).join(', ');
const label = document.createElement('div');
label.className = 'impeccable-label';
Object.assign(label.style, {
position: 'absolute', bottom: '100%', left: '-2px',
display: 'flex', alignItems: 'center',
whiteSpace: 'nowrap',
fontSize: '11px', fontWeight: '600', letterSpacing: '0.02em',
color: LABEL_INK, lineHeight: '14px',
background: LABEL_BG,
fontFamily: 'system-ui, sans-serif',
borderRadius: '4px 4px 0 0',
});
const textSpan = document.createElement('span');
textSpan.style.padding = '3px 8px';
textSpan.textContent = allText;
label.appendChild(textSpan);
// State for cycling mode
let cycleMode = false;
let cycleIndex = 0;
let isHovered = false;
let prevBtn, nextBtn;
function updateCycleText() {
const e = entries[cycleIndex];
textSpan.textContent = isHovered ? e.detail : e.name;
}
function enableCycleMode() {
if (cycleMode || entries.length < 2) return;
cycleMode = true;
const btnStyle = {
background: 'none', border: 'none', color: 'rgba(255,255,255,0.7)',
fontSize: '11px', cursor: 'pointer', padding: '3px 4px',
fontFamily: 'system-ui, sans-serif', lineHeight: '14px',
pointerEvents: 'auto',
};
const navGroup = document.createElement('span');
Object.assign(navGroup.style, {
display: 'inline-flex', alignItems: 'center', flexShrink: '0',
});
prevBtn = document.createElement('button');
prevBtn.textContent = '\u2039';
Object.assign(prevBtn.style, btnStyle);
prevBtn.style.paddingLeft = '6px';
prevBtn.addEventListener('click', (e) => {
e.stopPropagation();
cycleIndex = (cycleIndex - 1 + entries.length) % entries.length;
updateCycleText();
});
nextBtn = document.createElement('button');
nextBtn.textContent = '\u203A';
Object.assign(nextBtn.style, btnStyle);
nextBtn.style.paddingRight = '2px';
nextBtn.addEventListener('click', (e) => {
e.stopPropagation();
cycleIndex = (cycleIndex + 1) % entries.length;
updateCycleText();
});
navGroup.appendChild(prevBtn);
navGroup.appendChild(nextBtn);
label.insertBefore(navGroup, textSpan);
textSpan.style.padding = '3px 8px 3px 4px';
updateCycleText();
}
outline.appendChild(label);
// Start hidden; the IntersectionObserver will show it once the target is rendered
outline.style.display = 'none';
outline._staggerIndex = overlayIndex++;
el._impeccableOverlay = outline;
visibilityObserver.observe(el);
// After first paint, check label width vs outline
outline._checkLabel = () => {
if (entries.length > 1 && label.offsetWidth > outline.offsetWidth) {
enableCycleMode();
}
};
// Hover: show detail text, darken
const onMouseEnter = () => {
isHovered = true;
outline.classList.add('impeccable-hover');
outline.style.outlineColor = BRAND_COLOR_HOVER;
label.style.background = BRAND_COLOR_HOVER;
if (cycleMode) {
updateCycleText();
} else {
textSpan.textContent = entries.map(e => e.detail).join(' | ');
}
};
const onMouseLeave = () => {
isHovered = false;
outline.classList.remove('impeccable-hover');
outline.style.outlineColor = '';
label.style.background = LABEL_BG;
if (cycleMode) {
updateCycleText();
} else {
textSpan.textContent = allText;
}
};
el.addEventListener('mouseenter', onMouseEnter);
el.addEventListener('mouseleave', onMouseLeave);
outline._cleanup = () => {
el.removeEventListener('mouseenter', onMouseEnter);
el.removeEventListener('mouseleave', onMouseLeave);
};
document.body.appendChild(outline);
overlays.push(outline);
};
const showPageBanner = function(findings) {
if (!findings.length) return;
const banner = document.createElement('div');
banner.className = 'impeccable-overlay impeccable-banner';
Object.assign(banner.style, {
position: 'fixed', top: '0', left: '0', right: '0', zIndex: '100000',
background: LABEL_BG, color: LABEL_INK,
fontFamily: 'system-ui, sans-serif', fontSize: '13px',
display: 'flex', alignItems: 'center', pointerEvents: 'auto',
height: '36px', overflow: 'hidden', maxWidth: '100vw',
transform: 'translateY(-100%)',
transition: 'transform 0.4s cubic-bezier(0.16, 1, 0.3, 1)',
});
requestAnimationFrame(() => requestAnimationFrame(() => {
banner.style.transform = 'translateY(0)';
}));
// Scrollable findings area
const scrollArea = document.createElement('div');
Object.assign(scrollArea.style, {
flex: '1', minWidth: '0', overflowX: 'auto', overflowY: 'hidden',
display: 'flex', gap: '8px', alignItems: 'center',
padding: '0 12px', scrollSnapType: 'x mandatory',
scrollbarWidth: 'none',
});
for (const f of findings) {
const prefix = RULE_CATEGORY[f.type] === 'slop' ? '\u2726 ' : '';
const tag = document.createElement('span');
tag.textContent = `${prefix}${TYPE_LABELS[f.type] || f.type}: ${f.detail}`;
Object.assign(tag.style, {
background: 'rgba(255,255,255,0.15)', padding: '2px 8px',
borderRadius: '3px', fontSize: '12px', fontFamily: 'ui-monospace, monospace',
whiteSpace: 'nowrap', flexShrink: '0', scrollSnapAlign: 'start',
});
scrollArea.appendChild(tag);
}
banner.appendChild(scrollArea);
// Controls area (only in standalone mode, not extension)
if (!EXTENSION_MODE) {
const controls = document.createElement('div');
Object.assign(controls.style, {
display: 'flex', alignItems: 'center', gap: '2px',
padding: '0 8px', flexShrink: '0',
});
// Toggle visibility button
const toggle = document.createElement('button');
toggle.textContent = '\u25C9'; // circle with dot (visible state)
toggle.title = 'Toggle overlay visibility';
Object.assign(toggle.style, {
background: 'none', border: 'none',
color: 'white', fontSize: '16px', cursor: 'pointer', padding: '0 4px',
opacity: '0.85', transition: 'opacity 0.15s',
});
let overlaysVisible = true;
toggle.addEventListener('click', () => {
overlaysVisible = !overlaysVisible;
document.body.classList.toggle('impeccable-hidden', !overlaysVisible);
toggle.textContent = overlaysVisible ? '\u25C9' : '\u25CB'; // filled vs empty circle
toggle.style.opacity = overlaysVisible ? '0.85' : '0.5';
});
controls.appendChild(toggle);
// Close button
const close = document.createElement('button');
close.textContent = '\u00d7';
close.title = 'Dismiss banner';
Object.assign(close.style, {
background: 'none', border: 'none',
color: 'white', fontSize: '18px', cursor: 'pointer', padding: '0 4px',
});
close.addEventListener('click', () => banner.remove());
controls.appendChild(close);
banner.appendChild(controls);
}
document.body.appendChild(banner);
overlays.push(banner);
};
// Heuristic for skipping CSS-in-JS hashed class names like "css-1a2b3c" or "_2x4hG_".
// These change between builds and produce brittle, ugly selectors.
function isLikelyHashedClass(c) {
if (!c) return true;
if (/^(css|sc|emotion|jsx|module)-[\w-]{4,}$/i.test(c)) return true;
if (/^_[\w-]{5,}$/.test(c)) return true;
if (/^[a-z0-9]{6,}$/i.test(c) && /\d/.test(c)) return true;
return false;
}
function buildSelectorSegment(el) {
const tag = el.tagName.toLowerCase();
let sel = tag;
if (el.classList && el.classList.length > 0) {
const classes = [...el.classList]
.filter(c => !c.startsWith('impeccable-') && !isLikelyHashedClass(c))
.slice(0, 2);
if (classes.length > 0) {
sel += '.' + classes.map(c => CSS.escape(c)).join('.');
}
}
// Disambiguate among siblings only if the parent has multiple matches
const parent = el.parentElement;
if (parent) {
try {
const matching = parent.querySelectorAll(':scope > ' + sel);
if (matching.length > 1) {
const sameType = [...parent.children].filter(c => c.tagName === el.tagName);
const idx = sameType.indexOf(el) + 1;
sel += `:nth-of-type(${idx})`;
}
} catch {
const idx = [...parent.children].indexOf(el) + 1;
sel = `${tag}:nth-child(${idx})`;
}
}
return sel;
}
function generateSelector(el) {
if (el === document.body) return 'body';
if (el === document.documentElement) return 'html';
if (el.id) return '#' + CSS.escape(el.id);
const parts = [];
let current = el;
let depth = 0;
const MAX_DEPTH = 10;
while (current && current !== document.body && current !== document.documentElement && depth < MAX_DEPTH) {
parts.unshift(buildSelectorSegment(current));
// Anchor on an ancestor's ID and stop walking up
if (current.id) {
parts[0] = '#' + CSS.escape(current.id);
break;
}
// Stop as soon as the partial selector uniquely identifies the target
const trySelector = parts.join(' > ');
try {
const matches = document.querySelectorAll(trySelector);
if (matches.length === 1 && matches[0] === el) {
return trySelector;
}
} catch { /* invalid selector — keep walking */ }
current = current.parentElement;
depth++;
}
return parts.join(' > ');
}
function getDirectText(el) {
return [...el.childNodes]
.filter(n => n.nodeType === 3)
.map(n => n.textContent || '')
.join('');
}
function getDirectTextRect(el) {
const rects = [];
for (const node of el.childNodes) {
if (node.nodeType !== 3 || !(node.textContent || '').trim()) continue;
const range = document.createRange();
range.selectNodeContents(node);
for (const rect of range.getClientRects()) {
if (rect.width >= 1 && rect.height >= 1) rects.push(rect);
}
range.detach?.();
}
if (rects.length === 0) return null;
const left = Math.min(...rects.map(r => r.left));
const top = Math.min(...rects.map(r => r.top));
const right = Math.max(...rects.map(r => r.right));
const bottom = Math.max(...rects.map(r => r.bottom));
return {
left,
top,
right,
bottom,
width: right - left,
height: bottom - top,
x: left,
y: top,
};
}
function collectVisualContrastReasons(el, style) {
const reasons = new Set();
const bgClip = style.webkitBackgroundClip || style.backgroundClip || '';
const ownBgImage = style.backgroundImage || '';
if (bgClip === 'text' && ownBgImage && ownBgImage !== 'none') {
reasons.add('background-clip text');
}
if (style.textShadow && style.textShadow !== 'none') reasons.add('text shadow');
let current = el;
while (current && current.nodeType === 1) {
const tag = current.tagName?.toLowerCase();
const currentStyle = getComputedStyle(current);
const bgImage = currentStyle.backgroundImage || '';
const isDocumentSurface = tag === 'body' || tag === 'html';
if (!isDocumentSurface && bgImage && bgImage !== 'none') {
if (/url\s*\(/i.test(bgImage)) reasons.add('image background');
if (/gradient/i.test(bgImage)) reasons.add('gradient background');
}
if (parseFloat(currentStyle.opacity) < 0.99) reasons.add('opacity stack');
if (currentStyle.mixBlendMode && currentStyle.mixBlendMode !== 'normal') reasons.add('blend mode');
if (currentStyle.filter && currentStyle.filter !== 'none') reasons.add('filter');
if (currentStyle.backdropFilter && currentStyle.backdropFilter !== 'none') reasons.add('backdrop filter');
const solidBg = parseRgb(currentStyle.backgroundColor);
if (solidBg && solidBg.a >= 0.95 && (!bgImage || bgImage === 'none')) break;
current = current.parentElement;
}
const sampleRect = getDirectTextRect(el) || el.getBoundingClientRect();
if (sampleRect && document.elementsFromPoint) {
const points = [
[sampleRect.left + sampleRect.width / 2, sampleRect.top + sampleRect.height / 2],
[sampleRect.left + Math.min(sampleRect.width - 1, Math.max(1, sampleRect.width * 0.25)), sampleRect.top + sampleRect.height / 2],
[sampleRect.left + Math.min(sampleRect.width - 1, Math.max(1, sampleRect.width * 0.75)), sampleRect.top + sampleRect.height / 2],
];
for (const [x, y] of points) {
if (x < 0 || y < 0 || x > window.innerWidth || y > window.innerHeight) continue;
const stack = document.elementsFromPoint(x, y);
const selfIndex = stack.findIndex(node => node === el || el.contains(node) || node.contains?.(el));
if (selfIndex < 0) continue;
for (const node of stack.slice(selfIndex + 1)) {
const nodeTag = node.tagName?.toLowerCase();
if (nodeTag === 'img' || nodeTag === 'picture' || nodeTag === 'video' || nodeTag === 'canvas' || nodeTag === 'svg') {
reasons.add(`${nodeTag} underlay`);
break;
}
}
}
}
return [...reasons];
}
function collectVisualContrastCandidates(options = {}) {
const maxCandidates = Number.isFinite(options.maxCandidates) ? options.maxCandidates : 12;
const candidates = [];
for (const el of document.querySelectorAll('*')) {
if (candidates.length >= maxCandidates) break;
if (el.closest('.impeccable-overlay, .impeccable-label, .impeccable-banner, .impeccable-tooltip')) continue;
if (el.closest('[id^="impeccable-live-"]')) continue;
if (el === document.body || el === document.documentElement) continue;
if (!isRenderedForBrowserRule(el)) continue;
const tag = el.tagName.toLowerCase();
const style = getComputedStyle(el);
if (style.display === 'none' || style.visibility === 'hidden') continue;
const directText = getDirectText(el);
const hasDirectText = directText.trim().length > 0;
if (!hasDirectText || isEmojiOnlyText(directText)) continue;
const bgColor = readOwnBackgroundColor(el, style);
const isStyledButton = (tag === 'a' || tag === 'button')
&& bgColor && bgColor.a > 0.5;
if (SAFE_TAGS.has(tag) && !isStyledButton) continue;
const rect = getDirectTextRect(el) || el.getBoundingClientRect();
if (!rect || rect.width < 4 || rect.height < 4) continue;
const reasons = collectVisualContrastReasons(el, style);
if (reasons.length === 0) continue;
const textColor = parseRgb(style.color);
const fontSize = parseFloat(style.fontSize) || 16;
const fontWeight = parseInt(style.fontWeight) || 400;
const isLargeText = fontSize >= WCAG_LARGE_TEXT_PX || (fontSize >= WCAG_LARGE_BOLD_TEXT_PX && fontWeight >= 700);
const threshold = isLargeText ? 3.0 : 4.5;
const clip = {
x: Math.max(0, Math.floor(rect.left + window.scrollX - 2)),
y: Math.max(0, Math.floor(rect.top + window.scrollY - 2)),
width: Math.max(1, Math.ceil(rect.width + 4)),
height: Math.max(1, Math.ceil(rect.height + 4)),
};
candidates.push({
selector: generateSelector(el),
tagName: tag,
text: directText.trim().replace(/\s+/g, ' ').slice(0, 80),
threshold,
reasons,
clip,
textColor,
preferRenderedForeground: !textColor || textColor.a < 0.99 || reasons.some(reason =>
reason === 'opacity stack' ||
reason === 'blend mode' ||
reason === 'filter' ||
reason === 'backdrop filter' ||
reason === 'background-clip text'
),
backgroundClipText: reasons.includes('background-clip text'),
});
}
return candidates;
}
const visualContrastImageCache = new Map();
const visualContrastRasterCache = new WeakMap();
function clampByte(value) {
return Math.max(0, Math.min(255, Math.round(value)));
}
function blendRgba(fg, bg) {
if (!fg) return bg || null;
if (!bg || fg.a == null || fg.a >= 0.999) {
return { r: clampByte(fg.r), g: clampByte(fg.g), b: clampByte(fg.b), a: fg.a == null ? 1 : fg.a };
}
const alpha = Math.max(0, Math.min(1, fg.a));
return {
r: clampByte(fg.r * alpha + bg.r * (1 - alpha)),
g: clampByte(fg.g * alpha + bg.g * (1 - alpha)),
b: clampByte(fg.b * alpha + bg.b * (1 - alpha)),
a: 1,
};
}
function pickWorstContrastColor(textColor, colors) {
const usable = (colors || []).filter(Boolean);
if (!usable.length) return null;
let worst = usable[0];
let worstRatio = contrastRatio(textColor, worst);
for (const color of usable.slice(1)) {
const ratio = contrastRatio(textColor, color);
if (ratio < worstRatio) {
worst = color;
worstRatio = ratio;
}
}
return worst;
}
function firstCssUrl(value) {
const match = String(value || '').match(/url\((?:"([^"]+)"|'([^']+)'|([^)]*))\)/i);
if (!match) return '';
return (match[1] || match[2] || match[3] || '').trim();
}
function getLayerValue(value, index = 0) {
return String(value || '').split(',')[index]?.trim() || '';
}
function parsePositionToken(token, container, painted) {
if (!token || token === 'center') return (container - painted) / 2;
if (token === 'left' || token === 'top') return 0;
if (token === 'right' || token === 'bottom') return container - painted;
if (/%$/.test(token)) {
const pct = parseFloat(token) / 100;
return (container - painted) * pct;
}
if (/px$/.test(token)) return parseFloat(token) || 0;
return (container - painted) / 2;
}
function parsePositionPair(positionValue) {
const tokens = String(positionValue || '50% 50%').trim().split(/\s+/).filter(Boolean);
const first = tokens[0] || '50%';
if (tokens.length < 2) {
if (first === 'top' || first === 'bottom') return ['50%', first];
return [first, '50%'];
}
return [first, tokens[1] || '50%'];
}
function resolvePaintedImageRect(containerRect, image, sizeValue, positionValue) {
const intrinsicWidth = image.naturalWidth || image.videoWidth || image.width || 1;
const intrinsicHeight = image.naturalHeight || image.videoHeight || image.height || 1;
let paintedWidth = intrinsicWidth;
let paintedHeight = intrinsicHeight;
const size = String(sizeValue || 'auto').trim();
if (size === 'cover' || size === 'contain') {
const scale = size === 'cover'
? Math.max(containerRect.width / intrinsicWidth, containerRect.height / intrinsicHeight)
: Math.min(containerRect.width / intrinsicWidth, containerRect.height / intrinsicHeight);
paintedWidth = intrinsicWidth * scale;
paintedHeight = intrinsicHeight * scale;
} else if (size && size !== 'auto') {
const parts = size.split(/\s+/);
const widthToken = parts[0];
const heightToken = parts[1] || 'auto';
if (/%$/.test(widthToken)) paintedWidth = containerRect.width * (parseFloat(widthToken) / 100);
else if (/px$/.test(widthToken)) paintedWidth = parseFloat(widthToken) || paintedWidth;
if (heightToken === 'auto') paintedHeight = paintedWidth * (intrinsicHeight / intrinsicWidth);
else if (/%$/.test(heightToken)) paintedHeight = containerRect.height * (parseFloat(heightToken) / 100);
else if (/px$/.test(heightToken)) paintedHeight = parseFloat(heightToken) || paintedHeight;
}
const [xToken, yToken] = parsePositionPair(positionValue);
const positionX = parsePositionToken(xToken, containerRect.width, paintedWidth);
const positionY = parsePositionToken(yToken, containerRect.height, paintedHeight);
return {
left: containerRect.left + positionX,
top: containerRect.top + positionY,
width: paintedWidth,
height: paintedHeight,
intrinsicWidth,
intrinsicHeight,
};
}
function parseObjectPosition(positionValue) {
return parsePositionPair(positionValue);
}
function resolveObjectImageRect(containerRect, image, style) {
const intrinsicWidth = image.naturalWidth || image.videoWidth || image.width || 1;
const intrinsicHeight = image.naturalHeight || image.videoHeight || image.height || 1;
const fit = style.objectFit || 'fill';
let paintedWidth = containerRect.width;
let paintedHeight = containerRect.height;
if (fit === 'contain' || fit === 'cover') {
const scale = fit === 'cover'
? Math.max(containerRect.width / intrinsicWidth, containerRect.height / intrinsicHeight)
: Math.min(containerRect.width / intrinsicWidth, containerRect.height / intrinsicHeight);
paintedWidth = intrinsicWidth * scale;
paintedHeight = intrinsicHeight * scale;
} else if (fit === 'none') {
paintedWidth = intrinsicWidth;
paintedHeight = intrinsicHeight;
} else if (fit === 'scale-down') {
const containScale = Math.min(containerRect.width / intrinsicWidth, containerRect.height / intrinsicHeight, 1);
paintedWidth = intrinsicWidth * containScale;
paintedHeight = intrinsicHeight * containScale;
}
const [xToken, yToken] = parseObjectPosition(style.objectPosition);
return {
left: containerRect.left + parsePositionToken(xToken, containerRect.width, paintedWidth),
top: containerRect.top + parsePositionToken(yToken, containerRect.height, paintedHeight),
width: paintedWidth,
height: paintedHeight,
intrinsicWidth,
intrinsicHeight,
};
}
function pointToImageSource(point, paintedRect) {
if (
point.x < paintedRect.left ||
point.y < paintedRect.top ||
point.x > paintedRect.left + paintedRect.width ||
point.y > paintedRect.top + paintedRect.height
) {
return null;
}
return {
x: Math.max(0, Math.min(paintedRect.intrinsicWidth - 1, ((point.x - paintedRect.left) / paintedRect.width) * paintedRect.intrinsicWidth)),
y: Math.max(0, Math.min(paintedRect.intrinsicHeight - 1, ((point.y - paintedRect.top) / paintedRect.height) * paintedRect.intrinsicHeight)),
};
}
async function loadVisualContrastImage(src) {
if (!src) return null;
if (visualContrastImageCache.has(src)) return visualContrastImageCache.get(src);
const promise = new Promise(resolve => {
const img = new Image();
let settled = false;
const finish = value => {
if (settled) return;
settled = true;
clearTimeout(timer);
resolve(value);
};
const timer = setTimeout(() => finish(null), 800);
try {
const absolute = new URL(src, location.href);
if (absolute.origin !== location.origin && absolute.protocol !== 'data:' && absolute.protocol !== 'blob:') {
img.crossOrigin = 'anonymous';
}
} catch {
// Let the browser resolve unusual URLs itself.
}
img.onload = () => finish(img);
img.onerror = () => finish(null);
img.src = src;
});
visualContrastImageCache.set(src, promise);
return promise;
}
function sampleDrawablePixel(drawable, sourcePoint) {
if (visualContrastRasterCache.has(drawable)) {
const cached = visualContrastRasterCache.get(drawable);
if (!cached || !cached.ctx) return { status: 'unresolved', reason: cached?.reason || 'image sample failed' };
try {
const x = Math.max(0, Math.min(cached.width - 1, Math.floor(sourcePoint.x * cached.scaleX)));
const y = Math.max(0, Math.min(cached.height - 1, Math.floor(sourcePoint.y * cached.scaleY)));
const data = cached.ctx.getImageData(x, y, 1, 1).data;
return {
status: 'sampled',
color: { r: data[0], g: data[1], b: data[2], a: data[3] / 255 },
};
} catch (err) {
return {
status: 'unresolved',
reason: /taint|cross-origin|Security/i.test(err?.message || '') ? 'tainted image' : 'image sample failed',
};
}
}
const canvas = document.createElement('canvas');
const intrinsicWidth = drawable.naturalWidth || drawable.videoWidth || drawable.width || 1;
const intrinsicHeight = drawable.naturalHeight || drawable.videoHeight || drawable.height || 1;
const maxRasterSide = 640;
const scale = Math.min(1, maxRasterSide / Math.max(intrinsicWidth, intrinsicHeight));
canvas.width = Math.max(1, Math.round(intrinsicWidth * scale));
canvas.height = Math.max(1, Math.round(intrinsicHeight * scale));
const ctx = canvas.getContext('2d', { willReadFrequently: true });
if (!ctx) return { status: 'unresolved', reason: 'canvas unavailable' };
try {
ctx.drawImage(drawable, 0, 0, canvas.width, canvas.height);
const cached = {
ctx,
width: canvas.width,
height: canvas.height,
scaleX: canvas.width / intrinsicWidth,
scaleY: canvas.height / intrinsicHeight,
};
visualContrastRasterCache.set(drawable, cached);
const x = Math.max(0, Math.min(cached.width - 1, Math.floor(sourcePoint.x * cached.scaleX)));
const y = Math.max(0, Math.min(cached.height - 1, Math.floor(sourcePoint.y * cached.scaleY)));
const data = ctx.getImageData(x, y, 1, 1).data;
return {
status: 'sampled',
color: { r: data[0], g: data[1], b: data[2], a: data[3] / 255 },
};
} catch (err) {
const reason = /taint|cross-origin|Security/i.test(err?.message || '') ? 'tainted image' : 'image sample failed';
visualContrastRasterCache.set(drawable, { ctx: null, reason });
return {
status: 'unresolved',
reason,
};
}
}
async function sampleCssBackground(el, style, point, textColor) {
const rect = el.getBoundingClientRect();
const bgImage = style.backgroundImage || '';
if (bgImage && bgImage !== 'none') {
if (/gradient/i.test(bgImage)) {
const color = pickWorstContrastColor(textColor, parseGradientColors(bgImage));
if (color) return { status: 'sampled', color, method: 'analytic-gradient' };
}
if (/url\s*\(/i.test(bgImage)) {
const img = await loadVisualContrastImage(firstCssUrl(bgImage));
if (!img) return { status: 'unresolved', reason: 'image unavailable' };
const paintedRect = resolvePaintedImageRect(
rect,
img,
getLayerValue(style.backgroundSize) || 'auto',
getLayerValue(style.backgroundPosition) || '50% 50%',
);
const sourcePoint = pointToImageSource(point, paintedRect);
if (!sourcePoint) return { status: 'unresolved', reason: 'point outside background image' };
const sample = sampleDrawablePixel(img, sourcePoint);
if (sample.status === 'sampled') return { ...sample, method: 'canvas-background-image' };
return sample;
}
}
const bg = parseRgb(style.backgroundColor);
if (bg && bg.a > 0.05) return { status: 'sampled', color: bg, method: 'solid-background' };
return { status: 'unresolved', reason: 'no readable background' };
}
async function sampleImageElement(img, point) {
const rect = img.getBoundingClientRect();
const style = getComputedStyle(img);
const paintedRect = resolveObjectImageRect(rect, img, style);
const sourcePoint = pointToImageSource(point, paintedRect);
if (!sourcePoint) return { status: 'unresolved', reason: 'point outside image' };
const sample = sampleDrawablePixel(img, sourcePoint);
if (sample.status === 'sampled') return { ...sample, method: 'canvas-img-underlay' };
if (img.currentSrc || img.src) {
const loaded = await loadVisualContrastImage(img.currentSrc || img.src);
if (loaded) {
const loadedRect = { ...paintedRect, intrinsicWidth: loaded.naturalWidth || loaded.width || paintedRect.intrinsicWidth, intrinsicHeight: loaded.naturalHeight || loaded.height || paintedRect.intrinsicHeight };
const loadedPoint = pointToImageSource(point, loadedRect);
if (loadedPoint) {
const loadedSample = sampleDrawablePixel(loaded, loadedPoint);
if (loadedSample.status === 'sampled') return { ...loadedSample, method: 'canvas-img-underlay' };
}
}
}
return sample;
}
function textSamplePoints(rect) {
const insetX = Math.min(12, Math.max(1, rect.width * 0.12));
const insetY = Math.min(8, Math.max(1, rect.height * 0.22));
const xs = rect.width < 28
? [rect.left + rect.width / 2]
: [rect.left + insetX, rect.left + rect.width / 2, rect.right - insetX];
const ys = rect.height < 22
? [rect.top + rect.height / 2]
: [rect.top + insetY, rect.top + rect.height / 2, rect.bottom - insetY];
const points = [];
for (const y of ys) {
for (const x of xs) {
if (x >= 0 && y >= 0 && x <= window.innerWidth && y <= window.innerHeight) points.push({ x, y });
}
}
return points;
}
async function sampleVisualBackgroundAtPoint(el, point, textColor, depth = 0) {
if (depth > 8) {
return { status: 'unresolved', reason: 'background stack too deep' };
}
const stack = typeof document.elementsFromPoint === 'function'
? document.elementsFromPoint(point.x, point.y)
: [];
const selfIndex = stack.findIndex(node => node === el || el.contains(node));
const nodes = selfIndex >= 0 ? stack.slice(selfIndex) : [el, ...stack];
const unresolved = [];
for (const node of nodes) {
if (!node || node.nodeType !== 1) continue;
if (node.closest?.('.impeccable-overlay, .impeccable-label, .impeccable-banner, .impeccable-tooltip')) continue;
const tag = node.tagName?.toLowerCase();
if (tag === 'img') {
const sample = await sampleImageElement(node, point);
if (sample.status === 'sampled') return sample;
unresolved.push(sample.reason);
continue;
}
if (tag === 'canvas' || tag === 'video') {
const rect = node.getBoundingClientRect();
const sourcePoint = pointToImageSource(point, {
left: rect.left,
top: rect.top,
width: rect.width,
height: rect.height,
intrinsicWidth: node.width || node.videoWidth || rect.width,
intrinsicHeight: node.height || node.videoHeight || rect.height,
});
if (sourcePoint) {
const sample = sampleDrawablePixel(node, sourcePoint);
if (sample.status === 'sampled') return { ...sample, method: `canvas-${tag}-underlay` };
unresolved.push(sample.reason);
}
continue;
}
const style = getComputedStyle(node);
const sample = await sampleCssBackground(node, style, point, textColor);
if (sample.status === 'sampled') {
if (!sample.color || sample.color.a == null || sample.color.a >= 0.95) return sample;
const under = await sampleVisualBackgroundAtPoint(node.parentElement || document.body, point, textColor, depth + 1);
if (under.status === 'sampled') {
return {
status: 'sampled',
color: blendRgba(sample.color, under.color),
method: `${sample.method}+alpha`,
};
}
return sample;
}
unresolved.push(sample.reason);
}
return {
status: 'unresolved',
reason: [...new Set(unresolved.filter(Boolean))].slice(0, 3).join(', ') || 'no readable visual background',
};
}
async function analyzeVisualContrastCandidate(candidate) {
let el;
try {
el = document.querySelector(candidate.selector);
} catch {
return { ...candidate, status: 'unresolved', confidence: 'none', reason: 'stale selector' };
}
if (!el) return { ...candidate, status: 'unresolved', confidence: 'none', reason: 'missing element' };
if (!isRenderedForBrowserRule(el)) return { ...candidate, status: 'unresolved', confidence: 'none', reason: 'hidden element' };
const blockingReason = (candidate.reasons || []).find(reason =>
reason === 'background-clip text' ||
reason === 'blend mode' ||
reason === 'filter' ||
reason === 'backdrop filter' ||
reason === 'opacity stack' ||
reason === 'text shadow'
);
if (blockingReason) {
return { ...candidate, status: 'unresolved', confidence: 'none', reason: `${blockingReason} needs screenshot pixels` };
}
const style = getComputedStyle(el);
const textColor = parseRgb(style.color) || candidate.textColor;
if (!textColor) return { ...candidate, status: 'unresolved', confidence: 'none', reason: 'unreadable text color' };
const rect = getDirectTextRect(el) || el.getBoundingClientRect();
if (!rect || rect.width < 4 || rect.height < 4) {
return { ...candidate, status: 'unresolved', confidence: 'none', reason: 'missing text rect' };
}
const points = textSamplePoints(rect);
if (points.length === 0) {
return { ...candidate, status: 'unresolved', confidence: 'none', reason: 'text outside viewport' };
}
const ratios = [];
const methods = new Set();
const unresolved = [];
for (const point of points) {
const sample = await sampleVisualBackgroundAtPoint(el, point, textColor);
if (sample.status !== 'sampled' || !sample.color) {
unresolved.push(sample.reason);
continue;
}
const fg = blendRgba(textColor, sample.color);
ratios.push(contrastRatio(fg, sample.color));
if (sample.method) methods.add(sample.method);
}
if (ratios.length < Math.min(3, points.length)) {
return {
...candidate,
status: 'unresolved',
confidence: 'none',
samples: ratios.length,
reason: [...new Set(unresolved.filter(Boolean))].slice(0, 3).join(', ') || 'not enough readable samples',
};
}
ratios.sort((a, b) => a - b);
const pick = pct => ratios[Math.min(ratios.length - 1, Math.max(0, Math.floor((pct / 100) * ratios.length)))];
const measuredRatio = pick(10);
const medianRatio = pick(50);
const status = measuredRatio < candidate.threshold ? 'fail' : 'pass';
const method = [...methods].sort().join(', ') || 'browser-visual';
const textLabel = candidate.text ? ` "${candidate.text}"` : '';
const detail = `browser contrast ${measuredRatio.toFixed(1)}:1 median ${medianRatio.toFixed(1)}:1 (need ${candidate.threshold}:1) via ${method}${textLabel}`;
return {
...candidate,
status,
confidence: method.includes('canvas-') ? 'high' : 'medium',
method,
ratio: measuredRatio,
medianRatio,
samples: ratios.length,
finding: status === 'fail' ? { id: 'low-contrast', snippet: detail } : null,
};
}
function waitForVisualPaint() {
return new Promise(resolve => {
requestAnimationFrame(() => requestAnimationFrame(resolve));
});
}
async function analyzeVisualContrast(options = {}) {
const candidates = collectVisualContrastCandidates(options);
const results = [];
const shouldScrollOffscreen = options.scrollOffscreen === true;
const restoreScroll = { x: window.scrollX, y: window.scrollY };
for (const candidate of candidates) {
if (shouldScrollOffscreen && (window.scrollX !== restoreScroll.x || window.scrollY !== restoreScroll.y)) {
window.scrollTo(restoreScroll.x, restoreScroll.y);
await waitForVisualPaint();
}
let result = await analyzeVisualContrastCandidate(candidate);
if (shouldScrollOffscreen && result.status === 'unresolved' && result.reason === 'text outside viewport') {
let el = null;
try {
el = document.querySelector(candidate.selector);
} catch {
el = null;
}
if (el && typeof el.scrollIntoView === 'function') {
el.scrollIntoView({ block: 'center', inline: 'nearest', behavior: 'instant' });
await waitForVisualPaint();
result = await analyzeVisualContrastCandidate(candidate);
}
}
results.push(result);
}
if (shouldScrollOffscreen && (window.scrollX !== restoreScroll.x || window.scrollY !== restoreScroll.y)) {
window.scrollTo(restoreScroll.x, restoreScroll.y);
}
return results;
}
function isElementHidden(el) {
if (!el || el === document.body || el === document.documentElement) return false;
if (typeof el.checkVisibility === 'function') return !el.checkVisibility({ checkOpacity: false, checkVisibilityCSS: true });
// Fallback: zero size or no offsetParent (covers display:none and detached subtrees)
return el.offsetWidth === 0 && el.offsetHeight === 0;
}
function serializeFindings(allFindings) {
return allFindings.map(({ el, findings }) => ({
selector: generateSelector(el),
tagName: el.tagName?.toLowerCase() || 'unknown',
rect: (el !== document.body && el !== document.documentElement && el.getBoundingClientRect)
? el.getBoundingClientRect().toJSON() : null,
isPageLevel: el === document.body || el === document.documentElement,
isHidden: isElementHidden(el),
findings: findings.map(f => {
const ap = ANTIPATTERNS.find(a => a.id === (f.type || f.id));
return {
type: f.type || f.id,
category: ap ? ap.category : 'quality',
severity: ap?.severity || 'warning',
detail: f.detail || f.snippet,
ignoreValue: f.ignoreValue || f.value || '',
name: ap ? ap.name : (f.type || f.id),
description: ap ? ap.description : '',
};
}),
}));
}
const printSummary = function(allFindings) {
if (allFindings.length === 0) {
console.log('%c[impeccable] No anti-patterns found.', 'color: #22c55e; font-weight: bold');
return;
}
console.group(
`%c[impeccable] ${allFindings.length} anti-pattern${allFindings.length === 1 ? '' : 's'} found`,
'color: oklch(84% 0.19 80.46); font-weight: bold'
);
for (const { el, findings } of allFindings) {
for (const f of findings) {
console.log(`%c${f.type || f.id}%c ${f.detail || f.snippet}`,
'color: oklch(84% 0.19 80.46); font-weight: bold', 'color: inherit', el);
}
}
console.groupEnd();
};
function addBrowserFindings(groupMap, el, findings) {
if (!findings || findings.length === 0) return;
const existing = groupMap.get(el);
if (existing) existing.push(...findings);
else groupMap.set(el, [...findings]);
}
function browserFindingsFromMap(groupMap) {
return [...groupMap.entries()].map(([el, findings]) => ({ el, findings }));
}
const DESIGN_COLOR_TOLERANCE = 6;
const DESIGN_RADIUS_TOLERANCE_PX = 0.5;
const DESIGN_SKIP_TAGS = new Set(['head', 'title', 'meta', 'link', 'style', 'script', 'noscript', 'template', 'source']);
function normalizeBrowserFontName(value) {
return String(value || '')
.trim()
.replace(/^["']|["']$/g, '')
.replace(/\+/g, ' ')
.replace(/\s+/g, ' ')
.toLowerCase();
}
function browserPrimaryFont(stack) {
if (!stack || /var\(/i.test(stack)) return '';
return String(stack || '')
.split(',')
.map(normalizeBrowserFontName)
.find(font => font && !GENERIC_FONTS.has(font)) || '';
}
function browserDesignSystemConfig() {
const raw = window.__IMPECCABLE_CONFIG__?.designSystem;
if (!raw?.present) return null;
const allowedFonts = new Set((raw.allowedFonts || []).map(normalizeBrowserFontName).filter(Boolean));
const allowedColors = (raw.allowedColors || [])
.filter(color => color && Number.isFinite(color.r) && Number.isFinite(color.g) && Number.isFinite(color.b))
.map(color => ({ r: color.r, g: color.g, b: color.b }));
const allowedRadii = (raw.allowedRadii || [])
.map(Number)
.filter(px => Number.isFinite(px));
return {
present: true,
hasFonts: raw.hasFonts === true && allowedFonts.size > 0,
allowedFonts,
hasColors: raw.hasColors === true && allowedColors.length > 0,
allowedColors,
hasRadii: raw.hasRadii === true && allowedRadii.length > 0,
allowedRadii,
hasPillRadius: raw.hasPillRadius === true,
};
}
function browserColorsClose(a, b) {
if (!a || !b) return false;
return Math.max(
Math.abs(a.r - b.r),
Math.abs(a.g - b.g),
Math.abs(a.b - b.b),
) <= DESIGN_COLOR_TOLERANCE;
}
function isBrowserDesignColorAllowed(raw, designSystem) {
if (!designSystem?.hasColors) return true;
const text = String(raw || '').trim().toLowerCase();
if (!text || text === 'transparent' || text === 'currentcolor' || text === 'inherit' || text === 'initial') return true;
if (text.includes('var(')) return true;
const parsed = parseAnyColor(text);
if (!parsed) return true;
if ((parsed.a ?? 1) <= 0.05) return true;
return designSystem.allowedColors.some(color => browserColorsClose(parsed, color));
}
function isBrowserTransparentCss(value) {
const text = String(value || '').trim().toLowerCase();
if (!text || text === 'transparent') return true;
const parsed = parseAnyColor(text);
return parsed ? (parsed.a ?? 1) <= 0.05 : false;
}
function isBrowserDesignRadiusAllowed(raw, designSystem) {
if (!designSystem?.hasRadii) return true;
const text = String(raw || '').trim().toLowerCase();
if (!text || text === '0' || text === 'none' || text === 'initial' || text === 'inherit') return true;
if (text.includes('var(') || text.includes('%')) return true;
const px = resolveLengthPx(text, 16);
if (px == null || !Number.isFinite(px) || px <= DESIGN_RADIUS_TOLERANCE_PX) return true;
if (designSystem.hasPillRadius && px >= 99) return true;
return designSystem.allowedRadii.some(allowed => Math.abs(allowed - px) <= DESIGN_RADIUS_TOLERANCE_PX);
}
function browserRadiusTokens(value) {
return String(value || '')
.replace(/\s*\/\s*/g, ' ')
.split(/\s+/)
.map(token => token.trim())
.filter(Boolean);
}
function browserHasDirectText(el) {
return [...(el.childNodes || [])].some(node => node.nodeType === 3 && node.textContent.trim().length > 0);
}
function browserSampleText(el) {
const text = String(el.textContent || '').replace(/\s+/g, ' ').trim();
return text ? ` "${text.slice(0, 40)}"` : '';
}
function shouldSkipDesignElement(el) {
const tag = el.tagName?.toLowerCase?.() || '';
return DESIGN_SKIP_TAGS.has(tag) || isElementHidden(el);
}
function checkElementDesignSystemDOM(el, designSystem, seen) {
if (!designSystem?.present || shouldSkipDesignElement(el)) return [];
const findings = [];
const tag = el.tagName?.toLowerCase?.() || 'unknown';
const style = getComputedStyle(el);
if (designSystem.hasFonts && browserHasDirectText(el)) {
const font = browserPrimaryFont(style.fontFamily || '');
if (font && !designSystem.allowedFonts.has(font) && !seen.fonts.has(font)) {
seen.fonts.add(font);
findings.push({
type: 'design-system-font',
detail: `${tag}${browserSampleText(el)} uses ${font}; not declared in DESIGN.md typography`,
ignoreValue: font,
});
}
}
if (designSystem.hasColors) {
const colorChecks = [];
if (browserHasDirectText(el)) colorChecks.push(['text color', style.color]);
if (!isBrowserTransparentCss(style.backgroundColor)) colorChecks.push(['background', style.backgroundColor]);
for (const side of ['Top', 'Right', 'Bottom', 'Left']) {
if ((parseFloat(style[`border${side}Width`]) || 0) > 0) {
colorChecks.push([`border-${side.toLowerCase()}`, style[`border${side}Color`]]);
}
}
if ((parseFloat(style.outlineWidth) || 0) > 0) colorChecks.push(['outline', style.outlineColor]);
for (const [kind, raw] of colorChecks) {
const label = String(raw || '').trim().replace(/\s+/g, ' ');
if (isBrowserDesignColorAllowed(label, designSystem)) continue;
const key = `${kind}:${label}`;
if (seen.colors.has(key)) continue;
seen.colors.add(key);
findings.push({
type: 'design-system-color',
detail: `${kind} ${label} on ${tag}${browserSampleText(el)} is outside DESIGN.md colors`,
ignoreValue: label,
});
}
}
if (designSystem.hasRadii) {
for (const token of browserRadiusTokens(style.borderRadius || '')) {
if (isBrowserDesignRadiusAllowed(token, designSystem)) continue;
if (seen.radii.has(token)) continue;
seen.radii.add(token);
findings.push({
type: 'design-system-radius',
detail: `border-radius ${token} on ${tag}${browserSampleText(el)} is outside the DESIGN.md rounded scale`,
ignoreValue: token,
});
}
}
return findings;
}
function decodeBrowserGoogleFamily(value) {
const family = String(value || '').split(':')[0].replace(/\+/g, ' ');
try {
return decodeURIComponent(family);
} catch {
return family;
}
}
function checkBrowserDesignSystemSources(designSystem, seen) {
if (!designSystem?.hasFonts) return [];
const findings = [];
for (const link of document.querySelectorAll('link[href*="fonts.googleapis.com/css"]')) {
const href = link.getAttribute('href') || '';
for (const match of href.matchAll(/[?&]family=([^&]+)/g)) {
const display = decodeBrowserGoogleFamily(match[1]);
const font = normalizeBrowserFontName(display);
if (!font || designSystem.allowedFonts.has(font) || seen.fonts.has(font)) continue;
seen.fonts.add(font);
findings.push({
type: 'design-system-font',
detail: `Google Fonts: ${display} is not declared in DESIGN.md typography`,
ignoreValue: display,
});
}
}
return findings;
}
function collectBrowserFindings() {
const groupMap = new Map();
const _disabled = EXTENSION_MODE ? (window.__IMPECCABLE_CONFIG__?.disabledRules || []) : [];
const _ruleOk = (id) => !_disabled.length || !_disabled.includes(id);
const designSystem = browserDesignSystemConfig();
const designSeen = { fonts: new Set(), colors: new Set(), radii: new Set() };
// Note: provider-gated rules (--gpt / --gemini) are NOT filtered here. In a
// real browser env (detector page, live overlay, extension) running every
// check is free, so we always surface them; the gating is purely a CLI
// output concern, applied in the Node engines' detect* return paths.
for (const el of document.querySelectorAll('*')) {
// Skip impeccable's own elements and any descendants (overlays, labels, banner, nav buttons)
if (el.closest('.impeccable-overlay, .impeccable-label, .impeccable-banner, .impeccable-tooltip')) continue;
// Skip browser extension elements (Claude, etc.)
const elId = el.id || '';
if (elId.startsWith('claude-') || elId.startsWith('cic-')) continue;
// Skip the impeccable live-mode overlay (highlight, tooltip, bar, picker, toast).
// These are inspector chrome, not part of the user's design.
if (el.closest('[id^="impeccable-live-"]')) continue;
// Skip html/body -- page-level findings go in the banner, not a full-page overlay
if (el === document.body || el === document.documentElement) continue;
const findings = [
...checkElementBordersDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementColorsDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementMotionDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementGlowDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementAIPaletteDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementIconTileDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementItalicSerifDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementQualityDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementOversizedH1DOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementClippedOverflowDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementGptBorderShadowDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementTextOverflowDOM(el).map(f => ({ type: f.id, detail: f.snippet })),
...checkElementDesignSystemDOM(el, designSystem, designSeen),
].filter(f => _ruleOk(f.type));
addBrowserFindings(groupMap, el, findings);
// Hero eyebrow: the offending element is the eyebrow above the heading,
// not the heading itself — highlight the previous sibling instead.
const eyebrowFindings = checkElementHeroEyebrowDOM(el)
.map(f => ({ type: f.id, detail: f.snippet }))
.filter(f => _ruleOk(f.type));
if (eyebrowFindings.length > 0 && el.previousElementSibling) {
addBrowserFindings(groupMap, el.previousElementSibling, eyebrowFindings);
}
}
const pageLevelFindings = [];
const designSourceFindings = checkBrowserDesignSystemSources(designSystem, designSeen)
.filter(f => _ruleOk(f.type));
if (designSourceFindings.length > 0) {
pageLevelFindings.push(...designSourceFindings);
addBrowserFindings(groupMap, document.body, designSourceFindings);
}
const typoFindings = checkTypography().filter(f => _ruleOk(f.type));
if (typoFindings.length > 0) {
pageLevelFindings.push(...typoFindings);
addBrowserFindings(groupMap, document.body, typoFindings);
}
const sectionKickerFindings = checkRepeatedSectionKickersDOM()
.map(f => ({ type: f.id, detail: f.snippet }))
.filter(f => _ruleOk(f.type));
if (sectionKickerFindings.length > 0) {
pageLevelFindings.push(...sectionKickerFindings);
addBrowserFindings(groupMap, document.body, sectionKickerFindings);
}
const layoutFindings = checkLayout().filter(f => _ruleOk(f.type));
for (const f of layoutFindings) {
const el = f.el || document.body;
addBrowserFindings(groupMap, el, [{ type: f.type, detail: f.detail || f.snippet }]);
}
// Page-level quality checks (headings, etc.)
const qualityFindings = checkPageQualityDOM().filter(f => _ruleOk(f.type));
if (qualityFindings.length > 0) {
pageLevelFindings.push(...qualityFindings);
addBrowserFindings(groupMap, document.body, qualityFindings);
}
const creamFindings = checkCreamPalette(document)
.map(f => ({ type: f.id, detail: f.snippet }))
.filter(f => _ruleOk(f.type));
if (creamFindings.length > 0) {
pageLevelFindings.push(...creamFindings);
addBrowserFindings(groupMap, document.body, creamFindings);
}
// Regex-on-HTML checks (shared with Node)
// Clone the document and strip impeccable-live overlay nodes before the
// regex scan, so the inspector's own inline styles (transitions on top/
// left/width/height, etc.) don't register as page anti-patterns.
const docClone = document.documentElement.cloneNode(true);
for (const node of docClone.querySelectorAll('[id^="impeccable-live-"]')) {
node.remove();
}
const htmlPatternFindings = checkHtmlPatterns(docClone.outerHTML);
if (htmlPatternFindings.length > 0) {
const mapped = htmlPatternFindings.map(f => ({ type: f.id, detail: f.snippet })).filter(f => _ruleOk(f.type));
pageLevelFindings.push(...mapped);
addBrowserFindings(groupMap, document.body, mapped);
}
return {
groupMap,
allFindings: browserFindingsFromMap(groupMap),
pageLevelFindings,
};
}
function shouldRunVisualContrast(options = {}) {
return options.visualContrast === true || window.__IMPECCABLE_CONFIG__?.visualContrast === true;
}
function visualContrastOptions(options = {}) {
const config = window.__IMPECCABLE_CONFIG__ || {};
const scrollOffscreen = typeof options.scrollOffscreen === 'boolean'
? options.scrollOffscreen
: typeof options.visualContrastScrollOffscreen === 'boolean'
? options.visualContrastScrollOffscreen
: typeof config.visualContrastScrollOffscreen === 'boolean'
? config.visualContrastScrollOffscreen
: false;
return {
...options,
maxCandidates: Number.isFinite(options.visualContrastMaxCandidates)
? options.visualContrastMaxCandidates
: Number.isFinite(options.maxCandidates)
? options.maxCandidates
: Number.isFinite(config.visualContrastMaxCandidates)
? config.visualContrastMaxCandidates
: undefined,
scrollOffscreen,
};
}
let lastVisualContrastAnalyses = [];
let lazyVisualContrastObserver = null;
let lazyVisualContrastPending = new WeakMap();
const lazyVisualContrastResolving = new WeakSet();
let scanGeneration = 0;
function rememberVisualContrastAnalysis(result) {
if (!result?.selector) {
lastVisualContrastAnalyses.push(result);
return;
}
const idx = lastVisualContrastAnalyses.findIndex(item => item.selector === result.selector);
if (idx >= 0) lastVisualContrastAnalyses[idx] = result;
else lastVisualContrastAnalyses.push(result);
}
function disconnectLazyVisualContrastObserver() {
if (lazyVisualContrastObserver) {
lazyVisualContrastObserver.disconnect();
lazyVisualContrastObserver = null;
}
lazyVisualContrastPending = new WeakMap();
}
function addVisualContrastResult(groupMap, result, options = {}) {
if (result.status !== 'fail' || !result.finding || !result.selector) return false;
let el = null;
try {
el = document.querySelector(result.selector);
} catch {
el = null;
}
if (!el) return false;
const findingType = result.finding.type || result.finding.id || 'low-contrast';
const existing = groupMap.get(el) || [];
if (existing.some(f => (f.type || f.id) === findingType)) return false;
addBrowserFindings(groupMap, el, [{
type: findingType,
detail: result.finding.detail || result.finding.snippet,
}]);
if (options.decorate && el !== document.body && el !== document.documentElement) {
highlight(el, groupMap.get(el) || []);
}
return true;
}
function scanResultMeta(options = {}) {
const scanId = options.scanId;
if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
return { scanId: String(scanId) };
}
function postSerializedFindings(groupMap, options = {}) {
if (!EXTENSION_MODE) return;
const allFindings = browserFindingsFromMap(groupMap);
window.postMessage({
source: 'impeccable-results',
findings: serializeFindings(allFindings),
count: allFindings.length,
...scanResultMeta(options),
}, '*');
}
function postExtensionError(err) {
if (!EXTENSION_MODE) return;
window.postMessage({
source: 'impeccable-error',
message: err?.message || String(err),
}, '*');
}
function reportVisualContrastError(err, detail = {}) {
window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-error', {
detail: {
...detail,
message: err?.message || String(err),
},
}));
if (EXTENSION_MODE) {
postExtensionError(err);
} else {
console.warn('[impeccable] visual contrast scan failed', err);
}
}
function scheduleLazyVisualContrast(groupMap, analyses, options = {}, runtime = {}) {
disconnectLazyVisualContrastObserver();
if (options.visualContrastLazy === false || options.scrollOffscreen !== false) return;
if (typeof IntersectionObserver === 'undefined') return;
const unresolved = (analyses || []).filter(result =>
result?.status === 'unresolved' &&
result.reason === 'text outside viewport' &&
result.selector
);
if (unresolved.length === 0) return;
const generation = runtime.generation || scanGeneration;
lazyVisualContrastObserver = new IntersectionObserver((entries) => {
for (const entry of entries) {
if (!entry.isIntersecting) continue;
const el = entry.target;
const candidate = lazyVisualContrastPending.get(el);
if (!candidate || lazyVisualContrastResolving.has(el)) continue;
lazyVisualContrastObserver?.unobserve(el);
lazyVisualContrastPending.delete(el);
lazyVisualContrastResolving.add(el);
waitForVisualPaint()
.then(() => analyzeVisualContrastCandidate(candidate))
.then(result => {
if (generation !== scanGeneration) return;
rememberVisualContrastAnalysis(result);
const added = addVisualContrastResult(groupMap, result, { decorate: true });
if (added) {
postSerializedFindings(groupMap, options);
window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
detail: {
selector: result.selector,
status: result.status,
finding: result.finding || null,
},
}));
}
})
.catch(err => {
reportVisualContrastError(err, { selector: candidate.selector });
})
.finally(() => {
lazyVisualContrastResolving.delete(el);
});
}
}, { threshold: 0.5 });
for (const candidate of unresolved) {
let el = null;
try {
el = document.querySelector(candidate.selector);
} catch {
el = null;
}
if (!el) continue;
lazyVisualContrastPending.set(el, candidate);
lazyVisualContrastObserver.observe(el);
}
}
async function addVisualContrastFindings(groupMap, options = {}, runtime = {}) {
if (!shouldRunVisualContrast(options)) {
lastVisualContrastAnalyses = [];
disconnectLazyVisualContrastObserver();
return [];
}
const resolvedOptions = visualContrastOptions(options);
const analyses = await analyzeVisualContrast(resolvedOptions);
if (runtime.generation && runtime.generation !== scanGeneration) return analyses;
lastVisualContrastAnalyses = analyses;
for (const result of analyses) {
addVisualContrastResult(groupMap, result, { decorate: runtime.decorate });
}
if (runtime.decorate || runtime.scheduleLazy) scheduleLazyVisualContrast(groupMap, analyses, resolvedOptions, runtime);
return analyses;
}
async function collectBrowserFindingsAsync(options = {}, runtime = {}) {
const collected = collectBrowserFindings();
await addVisualContrastFindings(collected.groupMap, options, runtime);
return {
...collected,
allFindings: browserFindingsFromMap(collected.groupMap),
visualContrastAnalyses: lastVisualContrastAnalyses,
};
}
function clearOverlays() {
scanGeneration += 1;
disconnectLazyVisualContrastObserver();
for (const o of [...overlays]) detachOverlay(o);
overlays.length = 0;
visibilityObserver.disconnect();
overlayIndex = 0;
}
function renderBrowserFindings(collected, options = {}) {
const { allFindings, pageLevelFindings } = collected;
for (const { el, findings } of allFindings) {
if (el === document.body || el === document.documentElement) continue;
highlight(el, findings);
}
if (pageLevelFindings.length > 0) {
showPageBanner(pageLevelFindings);
}
if (!EXTENSION_MODE) printSummary(allFindings);
// In extension mode, post serialized results for the DevTools panel
if (EXTENSION_MODE) {
window.postMessage({
source: 'impeccable-results',
findings: serializeFindings(allFindings),
count: allFindings.length,
...scanResultMeta(options),
}, '*');
}
// After this scan completes, all subsequent reveals are instant (no stagger, no animation)
setTimeout(() => { firstScanDone = true; }, 1000);
return allFindings;
}
let firstScanDone = false;
const scan = function(options = {}) {
clearOverlays();
const generation = scanGeneration;
const collected = collectBrowserFindings();
const allFindings = renderBrowserFindings(collected, options);
if (shouldRunVisualContrast(options)) {
addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
.then(() => {
if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
})
.catch(err => {
reportVisualContrastError(err);
});
}
return allFindings;
};
const scanAsync = async function(options = {}) {
clearOverlays();
const generation = scanGeneration;
if (shouldRunVisualContrast(options)) {
const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
if (generation !== scanGeneration) return [];
return renderBrowserFindings(collected, options);
}
lastVisualContrastAnalyses = [];
return renderBrowserFindings(collectBrowserFindings(), options);
};
const detect = function(options = {}) {
lastVisualContrastAnalyses = [];
const { allFindings } = collectBrowserFindings();
return options.serialize === false ? allFindings : serializeFindings(allFindings);
};
const detectAsync = async function(options = {}) {
if (shouldRunVisualContrast(options)) {
const { allFindings } = await collectBrowserFindingsAsync(options);
return options.serialize === false ? allFindings : serializeFindings(allFindings);
}
lastVisualContrastAnalyses = [];
const { allFindings } = collectBrowserFindings();
return options.serialize === false ? allFindings : serializeFindings(allFindings);
};
if (EXTENSION_MODE) {
// Extension mode: listen for commands, don't auto-scan
window.addEventListener('message', (e) => {
if (e.source !== window || !e.data || e.data.source !== 'impeccable-command') return;
if (e.data.action === 'scan') {
if (e.data.config) window.__IMPECCABLE_CONFIG__ = e.data.config;
try {
scan(e.data.config || {});
} catch (err) {
postExtensionError(err);
}
}
if (e.data.action === 'toggle-overlays') {
const visible = !document.body.classList.contains('impeccable-hidden');
document.body.classList.toggle('impeccable-hidden', visible);
window.postMessage({ source: 'impeccable-overlays-toggled', visible: !visible }, '*');
}
if (e.data.action === 'remove') {
clearOverlays();
styleEl.remove();
if (spotlightBackdrop) { spotlightBackdrop.remove(); spotlightBackdrop = null; }
document.body.classList.remove('impeccable-hidden');
}
if (e.data.action === 'highlight') {
try {
const target = e.data.selector ? document.querySelector(e.data.selector) : null;
if (target) {
// Scroll first so positionOverlay reads the post-scroll rect
if (!isInViewport(target) && target.scrollIntoView) {
target.scrollIntoView({ behavior: 'instant', block: 'center' });
}
for (const o of overlays) {
if (o.classList.contains('impeccable-banner')) continue;
const isMatch = o._targetEl === target;
o.classList.toggle('impeccable-spotlight', isMatch);
o.classList.toggle('impeccable-spotlight-dimmed', !isMatch);
if (isMatch) {
// Force the matching overlay visible immediately, don't wait for IntersectionObserver
o.style.display = '';
o.style.animation = 'none';
o.classList.add('impeccable-visible');
o._revealed = true;
positionOverlay(o);
}
}
showSpotlight(target);
}
} catch { /* invalid selector */ }
}
if (e.data.action === 'unhighlight') {
hideSpotlight();
for (const o of overlays) {
o.classList.remove('impeccable-spotlight');
o.classList.remove('impeccable-spotlight-dimmed');
}
}
});
window.postMessage({ source: 'impeccable-ready' }, '*');
} else {
if (window.__IMPECCABLE_CONFIG__?.autoScan !== false) {
const runAutoScan = () => {
try {
scan();
} catch (err) {
console.warn('[impeccable] scan failed', err);
}
};
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => setTimeout(runAutoScan, 100));
} else {
setTimeout(runAutoScan, 100);
}
}
}
window.impeccableDetect = detect;
window.impeccableDetectAsync = detectAsync;
window.impeccableScan = scan;
window.impeccableScanAsync = scanAsync;
window.impeccableCollectVisualContrastCandidates = collectVisualContrastCandidates;
window.impeccableAnalyzeVisualContrast = analyzeVisualContrast;
window.impeccableGetLastVisualContrastAnalyses = () => lastVisualContrastAnalyses.slice();
}