' bHtml += '' bHtml += '' bHtml += '

' bar.innerHTML = bHtml document.documentElement.appendChild(bar) document.getElementById('__lab_dbg_btn').addEventListener('click', function (e) { e.stopPropagation() togglePanel() }) document.getElementById('__lab_close_btn').addEventListener('click', function () { panel.remove() bar.remove() }) } // ── Panel ───────────────────────────────────────────────────────────────── function togglePanel() { var p = document.getElementById('__lab_panel') var btn = document.getElementById('__lab_dbg_btn') if (!p) return var opening = p.style.display === 'none' p.style.display = opening ? 'block' : 'none' if (btn) btn.innerHTML = opening ? '▼ Debug' : '▲ Debug' if (opening) renderPanel() } function row(label, value) { return '

' + '' + label + '' + '' + value + '' + '

' } function badge(text, color) { color = color || '#334155' return '' + esc(text) + '' } function renderPanel() { var p = document.getElementById('__lab_panel') if (!p) return if (!assignment) { p.innerHTML = '

● Waiting for loader response...

' return } var a = assignment var statusColor = a._statusColor || '#475569' var statusText = a._statusText || '● loading' var html = '' // ── Header ────────────────────────────────────────────────────────────── html += '

' html += '

' html += '' + esc(a.experimentName) + '' html += '' + esc(a.experimentKey) + '' html += badge(a.variantName + ' (' + a.variantKey + ')', '#166534') html += '' + statusText + '' html += '

' html += '

' // ── Config section ─────────────────────────────────────────────────────── html += '

' html += '

Experiment config

' // Targeting rules var rules = a.targetingRules || [] var rulesText = rules.length === 0 ? 'All pages' : rules.map(function (r) { if (r.type === 'all_pages') return 'All pages' return r.type.replace(/_/g, ' ') + ': ' + (r.value || '') }).join(' OR ') html += row('Page targeting', esc(rulesText)) // Traffic html += row('Traffic allocation', esc(String(a.trafficAllocation)) + '%') // Audience conditions var conds = a.audienceConditions || [] var condsText = conds.length === 0 ? 'All visitors' : conds.map(function (c) { if (c.type === 'device') return 'Device ' + (c.operator || 'is') + ' ' + (c.value || '') if (c.type === 'cookie') return 'Cookie ' + (c.name || '') + ' ' + (c.operator || '') + ' ' + (c.value || '') if (c.type === 'query_param') return 'Param ' + (c.name || '') + ' ' + (c.operator || '') + ' ' + (c.value || '') if (c.type === 'visitor_type') return 'Visitor is ' + (c.value || '') if (c.type === 'custom_js') return 'Custom JS' return c.type }).join(' AND ') html += row('Audience', esc(condsText)) // Trigger var triggerText = a.triggerType if (a.triggerConfig) triggerText += ' ' + JSON.stringify(a.triggerConfig) html += row('Trigger', esc(triggerText)) html += '

' // ── Script section ─────────────────────────────────────────────────────── html += '

' html += '

Variant script

' if (a.script) { html += '

' + esc(a.script) + '

' html += '

' html += '' if (a._error) { html += '⚠ ' + esc(a._error) + '' } html += '

' } else { html += 'No script — feature flag or control variant' } html += '

' p.innerHTML = html if (a.script) { var rerunBtn = document.getElementById('__lab_rerun') if (rerunBtn) { rerunBtn.addEventListener('click', function () { try { execScript(a.script, a.triggerType, a.triggerConfig) a._error = null renderPanel() } catch (e) { a._error = String(e) renderPanel() } }) } } } function setStatus(icon, text, color) { var el = document.getElementById('__lab_status') if (el) el.innerHTML = '' + icon + ' ' + esc(text) + '' if (assignment) { assignment._statusText = icon + ' ' + esc(text) assignment._statusColor = color var p = document.getElementById('__lab_panel') if (p && p.style.display !== 'none') renderPanel() } } // ── Audience conditions evaluation (client-side, AND logic) ─────────────── function matchesAudienceConditions(conditions) { if (!conditions || conditions.length === 0) return true return conditions.every(function (cond) { try { if (cond.type === 'device') { var ua = navigator.userAgent var isTablet = /iPad|Tablet|Android(?!.*Mobile)/i.test(ua) var isMobile = !isTablet && /Mobi|Android/i.test(ua) var device = isTablet ? 'tablet' : (isMobile ? 'mobile' : 'desktop') return cond.operator === 'is_not' ? device !== cond.value : device === cond.value } if (cond.type === 'cookie') { var cv = getCookie(cond.name) if (cond.operator === 'exists') return cv !== null if (cond.operator === 'equals') return cv === cond.value if (cond.operator === 'contains') return cv !== null && cv.indexOf(cond.value) !== -1 return false } if (cond.type === 'query_param') { var qp = new URLSearchParams(window.location.search) if (cond.operator === 'exists') return qp.has(cond.name) if (cond.operator === 'equals') return qp.get(cond.name) === cond.value return false } if (cond.type === 'visitor_type') { return cond.value === 'new' ? isNewVisitor : !isNewVisitor } if (cond.type === 'custom_js') { return !!(0, eval)('(function(){' + cond.code + '})()') } return true } catch (e) { console.warn('[Lab] audience condition error', e) return false } }) } // ── Script execution ─────────────────────────────────────────────────────── // Triggers still waiting (scroll, element visible) belong to the page that // set them; a client-side navigation cancels them so they never fire on // the next page. var pendingTriggers = [] function cancelPendingTriggers() { pendingTriggers.forEach(function (cancel) { cancel() }) pendingTriggers = [] } function execScript(script, triggerType, triggerConfig) { if (!script) return function run() { try { (0, eval)(script) } catch (e) { console.warn('[Lab]', e) } } if (triggerType === 'scroll' && triggerConfig && triggerConfig.scrollPct) { var pct = triggerConfig.scrollPct / 100 var fired = false function onScroll() { if (fired) return var ratio = (window.scrollY + window.innerHeight) / document.documentElement.scrollHeight if (ratio >= pct) { fired = true; window.removeEventListener('scroll', onScroll); run() } } window.addEventListener('scroll', onScroll, { passive: true }) pendingTriggers.push(function () { window.removeEventListener('scroll', onScroll) }) } else if (triggerType === 'element_visible' && triggerConfig && triggerConfig.selector) { var el = document.querySelector(triggerConfig.selector) if (!el) return var obs = new IntersectionObserver(function (entries) { if (entries[0].isIntersecting) { obs.disconnect(); run() } }) obs.observe(el) pendingTriggers.push(function () { obs.disconnect() }) } else if (triggerType === 'custom' && triggerConfig && triggerConfig.code) { try { var matches = (0, eval)('(function(){' + triggerConfig.code + '})()') if (matches) run() } catch (e) { console.warn('[Lab] custom trigger', e) } } else { run() } } // ── Loader call ──────────────────────────────────────────────────────────── // MAX_EXPOSURES in backend/experiments/lab.routes.ts var MAX_EXPOSURES = 20 // Runs on the first page and again on each client-side navigation // (LabNavigation), since Next keeps the layout, and this script, mounted. // Only the latest load may act: a slower answer for a page the visitor has // already left must not run its scripts or record its exposures here. var currentLoad = 0 var inFlight = null function load() { if (!isPreviewMode && !hasConsent()) return var userId = isPreviewMode ? 'preview' : visitorId() // A client-side navigation ends the previous page. flushPage() startPage() var thisPage = page cancelPendingTriggers() var thisLoad = ++currentLoad if (inFlight) inFlight.abort() inFlight = typeof AbortController === 'function' ? new AbortController() : null var pathname = window.location.pathname fetch('/api/lab/loader', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ userId: userId, url: pathname, host: window.location.host, previews: previews || {} }), signal: inFlight ? inFlight.signal : undefined }) .then(function (r) { if (!r.ok) throw new Error('loader answered ' + r.status) return r.json() }) .then(function (res) { if (thisLoad !== currentLoad) return if (!isPreviewMode && !hasConsent()) return var assignments = (res && res.data) ? res.data : [] var exposures = [] if (!isPreviewMode) { // Only a real answer may forget experiments the visitor saw. if (res && Array.isArray(res.goals)) { runningGoals = res.goals pruneExposed() } // The proxy exposed split URL visitors before the page loaded: this // page is where they landed when it's one of the test's pages. var exposed = exposedIds() runningGoals.forEach(function (exp) { if (exposed.indexOf(exp.experimentId) === -1) return ;(exp.pages || []).forEach(function (p) { if (p.path === pathname || p.path + '/' === pathname) { thisPage.landing.push(exp.experimentId) tagExposure(exp.experimentKey, p.variantKey) } }) }) } assignments.forEach(function (a) { var audiencePassed = matchesAudienceConditions(a.audienceConditions) if (isPreviewMode) { // Store the full assignment so the debug panel can render it assignment = a assignment._statusText = '● loading' assignment._statusColor = '#475569' } if (!audiencePassed) { setStatus('⊖', 'excluded by audience conditions', '#f87171') return } if (a.script) { var isDeferred = a.triggerType === 'scroll' || a.triggerType === 'element_visible' execScript(a.script, a.triggerType, a.triggerConfig) if (isDeferred) { setStatus('◯', 'script scheduled (' + a.triggerType + ')', '#fbbf24') } else { setStatus('✓', 'script executed', '#4ade80') } } else { setStatus('✓', 'active (no script)', '#94a3b8') } exposures.push({ experimentId: a.experimentId, variantId: a.variantId }) if (!isPreviewMode) { // Where they entered: a later page of the same test isn't a landing. if (exposed.indexOf(a.experimentId) === -1) thisPage.landing.push(a.experimentId) tagExposure(a.experimentKey, a.variantKey) } }) // One call for the whole page. Previews are the team checking a // variant, not visitors, so they stay out of the results. // A page visit goal may sit on this very page: it waits for the // exposures, since a conversion only counts after one. if (exposures.length > 0 && !isPreviewMode) { rememberExposed(exposures.map(function (e) { return e.experimentId })) fetch('/api/lab/exposures', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ userId: userId, exposures: exposures.slice(0, MAX_EXPOSURES), host: window.location.host, url: pathname, isNew: isNewVisitor }) }).then(checkPageVisitGoals, function () {}) } else if (!isPreviewMode) { checkPageVisitGoals() } if (isPreviewMode && assignments.length === 0) { setStatus('△', 'experiment not found or not matching this page', '#f87171') } }) .catch(function (e) { if (thisLoad !== currentLoad) return console.warn('[Lab] loader error', e) if (isPreviewMode) setStatus('△', 'loader error', '#f87171') }) } // The banner can change its answer on any page, and only polling sees it // (its listener has a single slot). A grant enters the visitor right away; // a refusal or a withdrawal forgets them. var CONSENT_POLL_MS = 1000 var consented = hasConsent() function watchConsent() { setInterval(function () { var now = hasConsent() if (now === consented) return consented = now if (now) load() else withdraw() }, CONSENT_POLL_MS) } /** A refusal stops what's still on its way: a pending load, a waiting trigger. */ function withdraw() { currentLoad++ if (inFlight) inFlight.abort() cancelPendingTriggers() forgetVisitor() } var lab = { load: load, track: track, formEvent: formEvent } window.__factorialLab = lab if (!isPreviewMode) { if (!consented) forgetVisitor() watchConsent() } load() })()

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