🔥(frontend) drop unused vendored ConnectionObserver

The vendored ConnectionObserver collected connection data that never
turned out to be useful for debugging.

Remove it to reduce dead code, and re-add a targeted observer later
if a concrete debugging need shows up.

CHANGELOG.md

@@ -11,19 +11,12 @@ and this project adheres to
 ### Changed
 
 - 🔥(frontend) drop unused vendored ConnectionObserver
-- 🐛(frontend) vendor formatChatMessageLinks and trim surrounding newlines
 
 ### Fixed
 
 - 📈(frontend) downgrade unreachable external home URL from error to event
 - 🐛(frontend) handle 401 responses when syncing user preferences
 - 🐛(frontend) harden speaker test against missing sinks and play errors
-- 🐛(frontend) implement hysteresis band for the control bar layout
-- 🐛(frontend) fix toolbar ResizeObserver loop and alignment drift
-- 🐛(analytics) filter benign ResizeObserver loop error in Sentry/PostHog
-- 🐛(frontend) stop reporting screen-share denials as errors
-- 🐛(frontend) generalize screen-share error modal beyond macOS
-- 📈(frontend) stop double-reporting media device failures
 
 ## [1.26.0] - 2026-08-12
 

src/frontend/src/features/analytics/exceptionFilters.ts

@@ -1,24 +0,0 @@
-import type { CaptureResult } from 'posthog-js'
-
-const IGNORED_EXCEPTION_PATTERNS = [
-  /ResizeObserver loop (completed with undelivered notifications|limit exceeded)/,
-]
-
-const shouldIgnoreException = (value: unknown): boolean =>
-  typeof value === 'string' &&
-  IGNORED_EXCEPTION_PATTERNS.some((pattern) => pattern.test(value))
-
-export const filterExceptions = (
-  event: CaptureResult | null
-): CaptureResult | null => {
-  if (event?.event !== '$exception') return event
-
-  const exceptionList = event.properties?.['$exception_list']
-  const values: unknown[] = Array.isArray(exceptionList)
-    ? exceptionList.map((exception) => exception?.value)
-    : []
-
-  values.push(event.properties?.['$exception_message'])
-
-  return values.some(shouldIgnoreException) ? null : event
-}

src/frontend/src/features/analytics/hooks/useAnalytics.ts

@@ -2,7 +2,6 @@ import { useEffect } from 'react'
 import { type ApiUser } from '@/features/auth/api/ApiUser'
 import { useUser } from '@/features/auth/api/useUser'
 import { getPosthog } from '../utils'
-import { filterExceptions } from '../exceptionFilters'
 
 export const startAnalyticsSession = (data: ApiUser) => {
   getPosthog().then((ph) => {
@@ -48,7 +47,6 @@ export const useAnalytics = ({
           capture_unhandled_rejections: true,
           capture_console_errors: true,
         },
-        before_send: filterExceptions,
       })
     })
   }, [id, host, flags_api_host, isDisabled])

src/frontend/src/features/analytics/telemetry.ts

@@ -23,7 +23,6 @@ export type LogCode =
   | 'livekit_room_error'
   | 'device_switch_failure'
   | 'permission_poll_failure'
-  | 'media_devices_error_event'
   // non-media families
   | 'participant_mute_api_failure'
   | 'permissions_api_failure'
@@ -138,7 +137,6 @@ export const captureMediaEvent = async (
     | 'media-device-success'
     | 'device-not-found'
     | 'permissions-denied'
-    | 'screen-share-permission-denied'
     | 'silent-mic-detected'
     | 'silent-mic-analyser-unavailable'
     | 'silent-mic-recovered'

src/frontend/src/features/chat/components/ChatMessageBody.tsx

@@ -1,6 +1,6 @@
 import { ChatRow } from '@/stores/chat'
 import React, { useMemo } from 'react'
-import { formatChatMessageLinks } from '../utils'
+import { formatChatMessageLinks } from '@livekit/components-react'
 import { css } from '@/styled-system/css'
 import { Text } from '@/primitives'
 

src/frontend/src/features/chat/utils.tsx

@@ -1,32 +0,0 @@
-import { tokenize, createDefaultGrammar } from '@livekit/components-core'
-import { ReactNode } from 'react'
-
-const defaultGrammar = Object.freeze(createDefaultGrammar())
-
-export function formatChatMessageLinks(message: string): ReactNode {
-  const trimmedMessage = message.replace(/^[\r\n]+|[\r\n]+$/g, '')
-  return tokenize(trimmedMessage, defaultGrammar).map((tok, i) => {
-    if (typeof tok === `string`) {
-      return tok
-    } else {
-      const content = tok.content.toString()
-      const href =
-        tok.type === `url`
-          ? /^http(s?):\/\//.test(content)
-            ? content
-            : `https://${content}`
-          : `mailto:${content}`
-      return (
-        <a
-          className="lk-chat-link"
-          key={i}
-          href={href}
-          target="_blank"
-          rel="noreferrer"
-        >
-          {content}
-        </a>
-      )
-    }
-  })
-}

src/frontend/src/features/reactions/components/toolbar/ReactionButtonsContainer.tsx

@@ -26,8 +26,8 @@ const StyledContainer = styled('div', {
     backgroundColor: 'primaryDark.100',
     maxWidth: '100%',
     opacity: 0,
-    translate: '0 3.25rem',
-    transition: 'opacity, translate',
+    transform: 'translateY(3.25rem)',
+    transition: 'opacity, transform',
     transitionDuration: '0.5s',
     transitionTimingFunction: 'cubic-bezier(0.4, 0, 0.2, 1)',
     pointerEvents: 'none',
@@ -36,7 +36,7 @@ const StyledContainer = styled('div', {
     isVisible: {
       true: {
         opacity: 1,
-        translate: '0 0',
+        transform: 'translateY(0)',
         pointerEvents: 'auto',
       },
     },
@@ -84,7 +84,7 @@ export const ReactionButtonsContainer = ({
     shouldBeCenteredWithToggleButton,
     setShouldBeCenteredWithToggleButton,
   ] = useState(false)
-  const [offsetX, setOffsetX] = useState(0)
+  const [rightOffset, setRightOffset] = useState(0)
 
   const updateArrows = useCallback(() => {
     const el = scrollRef.current
@@ -115,7 +115,7 @@ export const ReactionButtonsContainer = ({
 
   useLayoutEffect(() => {
     if (!shouldBeCenteredWithToggleButton || isMobile) {
-      setOffsetX(0)
+      setRightOffset(0)
       return
     }
 
@@ -133,7 +133,7 @@ export const ReactionButtonsContainer = ({
       const containerCenterX = containerRect.left + containerRect.width / 2
       const shift = toggleCenterX - containerCenterX
       if (Math.abs(shift) < 0.5) return
-      setOffsetX((prev) => prev + shift)
+      setRightOffset((prev) => prev - shift * 2)
     }
 
     const schedule = () => {
@@ -182,7 +182,7 @@ export const ReactionButtonsContainer = ({
       isVisible={isVisible}
       style={
         shouldBeCenteredWithToggleButton && !isMobile && adjustedCentering
-          ? { transform: `translateX(${offsetX}px)` }
+          ? { marginRight: `${rightOffset}px` }
           : { margin: '0 15px' }
       }
     >

src/frontend/src/features/rooms/components/Conference.tsx

@@ -225,10 +225,9 @@ export const Conference = ({
             backgroundColor: 'primaryDark.50 !important',
           })}
           onError={(e) => {
-            const failure = MediaDeviceFailure.getFailure(e)
-            if (failure && failure !== MediaDeviceFailure.Other) return
             reportError('livekit_room_error', e, {
               path: 'connect_publish',
+              failure: MediaDeviceFailure.getFailure(e) ?? 'not-a-device-error',
             })
           }}
           onConnected={async () => {

src/frontend/src/features/rooms/livekit/components/ScreenShareErrorModal.tsx

@@ -1,13 +1,6 @@
 import { A, Button, Dialog, P } from '@/primitives'
 import { useTranslation } from 'react-i18next'
 import { css } from '@/styled-system/css'
-import { getOS, type OS } from '@/utils/os'
-
-const SCREEN_CAPTURE_SETTINGS_LINKS: Partial<Record<OS, string>> = {
-  macos:
-    'x-apple.systempreferences:com.apple.preference.security?Privacy_ScreenCapture',
-  windows: 'ms-settings:privacy-graphicscaptureprogrammatic',
-}
 
 // todo - refactor it into a generic system
 export const ScreenShareErrorModal = ({
@@ -18,8 +11,7 @@ export const ScreenShareErrorModal = ({
   onClose: () => void
 }) => {
   const { t } = useTranslation('rooms', { keyPrefix: 'error.screenShare' })
-  const os = getOS()
-  const settingsHref = SCREEN_CAPTURE_SETTINGS_LINKS[os]
+  const isMac = navigator.userAgent.toLowerCase().indexOf('mac') !== -1
 
   return (
     <Dialog
@@ -34,16 +26,15 @@ export const ScreenShareErrorModal = ({
           <>
             <P>
               {t('message')}{' '}
-              {settingsHref && (
+              {isMac && (
                 <>
-                  {t('settingsInstructions')}{' '}
+                  {t('macInstructions')}{' '}
                   <A
-                    href={settingsHref}
-                    target="_blank"
+                    href="x-apple.systempreferences:com.apple.preference.security?Privacy_ScreenCapture"
                     color="primary"
-                    aria-label={t(`settingsLabel.${os}`) + '-' + t('newTab')}
+                    aria-label={t('macSystemPreferences') + '-' + t('newTab')}
                   >
-                    {t(`settingsLabel.${os}`)}
+                    {t('macSystemPreferences')}
                   </A>
                   .{' '}
                 </>

src/frontend/src/features/rooms/livekit/hooks/useWatchMediaDeviceErrors.ts

@@ -50,16 +50,15 @@ export const useWatchMediaDeviceErrors = (): MediaDeviceAlert & {
   useEffect(() => {
     const onDeviceError = (error: Error, kind?: MediaDeviceKind) => {
       const failure = MediaDeviceFailure.getFailure(error)
-      if (!failure) return
-      if (failure != MediaDeviceFailure.Other) {
-        void captureMediaEvent('media-device-error', {
-          log_code: 'media_devices_error_event',
-          path: 'connect_publish',
-          failure,
-          kind: kind ?? 'unknown',
-        })
-      }
-      if (!kind) return
+      if (!failure || !kind) return
+
+      void captureMediaEvent('media-device-error', {
+        log_code: 'media_devices_error_event',
+        path: 'connect_publish',
+        failure,
+        kind,
+      })
+
       const permissionKind = PERMISSION_BY_DEVICE_KIND[kind]
       switch (failure) {
         case MediaDeviceFailure.DeviceInUse:

src/frontend/src/features/rooms/livekit/prefabs/ControlBar/MoreOptions.tsx

@@ -12,8 +12,7 @@ import type { ToggleButtonProps } from '@/primitives/ToggleButton'
 import { RiArrowDownSLine, RiArrowUpSLine } from '@remixicon/react'
 import { useTranslation } from 'react-i18next'
 
-const CONTROL_BAR_BREAKPOINT_WIDE = 1100
-const CONTROL_BAR_BREAKPOINT_NARROW = 1050
+const CONTROL_BAR_BREAKPOINT = 1100
 
 const NavigationControls = ({
   onPress,
@@ -66,9 +65,10 @@ export const LateralMenu = () => {
     </DialogTrigger>
   )
 }
+
 interface BreakpointObserverProps {
   containerRef: RefObject<HTMLDivElement>
-  onWideChange: (isWide: boolean | null) => void
+  onWideChange: (isWide: boolean) => void
 }
 
 const BreakpointObserver = ({
@@ -76,20 +76,7 @@ const BreakpointObserver = ({
   onWideChange,
 }: BreakpointObserverProps) => {
   const { width } = useSize(containerRef)
-  const [isWide, setIsWide] = useState<boolean | null>(null)
-
-  useEffect(() => {
-    if (!width) {
-      return
-    }
-    if (width > CONTROL_BAR_BREAKPOINT_WIDE) {
-      setIsWide(true)
-    } else if (width <= CONTROL_BAR_BREAKPOINT_NARROW) {
-      setIsWide(false)
-    } else {
-      setIsWide((prev) => (prev === null ? false : prev))
-    }
-  }, [width])
+  const isWide = width > CONTROL_BAR_BREAKPOINT
 
   useEffect(() => {
     onWideChange(isWide)
@@ -103,7 +90,7 @@ export const MoreOptions = ({
 }: {
   parentElement: RefObject<HTMLDivElement>
 }) => {
-  const [isWide, setIsWide] = useState<boolean | null>(null)
+  const [isWide, setIsWide] = useState(false)
 
   return (
     <nav
@@ -120,7 +107,7 @@ export const MoreOptions = ({
         containerRef={parentElement}
         onWideChange={setIsWide}
       />
-      {isWide !== null && (isWide ? <NavigationControls /> : <LateralMenu />)}
+      {isWide ? <NavigationControls /> : <LateralMenu />}
     </nav>
   )
 }

src/frontend/src/features/rooms/livekit/prefabs/VideoConference.tsx

@@ -11,9 +11,7 @@ import { SidePanel } from '../components/SidePanel'
 import { RecordingProvider } from '@/features/recording'
 import { ScreenShareErrorModal } from '../components/ScreenShareErrorModal'
 import { ConnectionObserver } from '../components/ConnectionObserver'
-import { captureMediaEvent, reportError } from '@/features/analytics/telemetry'
-import { getOS } from '@/utils/os'
-import { isFireFox } from '@/utils/livekit'
+import { reportError } from '@/features/analytics/telemetry'
 import { MediaStateObserver } from '../components/MediaStateObserver'
 import { RoomMetadataSynchronizer } from '../components/RoomMetadataSynchronizer'
 import { useNoiseReduction } from '../hooks/useNoiseReduction'
@@ -38,20 +36,6 @@ export interface VideoConferenceProps extends React.HTMLAttributes<HTMLDivElemen
   SettingsComponent?: React.ComponentType
 }
 
-const getScreenSharePermissionDeniedScope = (
-  error: Error
-): 'system' | 'user' | 'browser' | null => {
-  if (error.name === 'NotAllowedError') {
-    if (/by system/i.test(error.message)) return 'system'
-    if (/by user/i.test(error.message)) return 'user'
-    return 'browser'
-  }
-  if (error.name === 'NotFoundError' && isFireFox() && getOS() === 'macos') {
-    return 'system'
-  }
-  return null
-}
-
 /**
  * The `VideoConference` ready-made component is your drop-in solution for a classic video conferencing application.
  * It provides functionality such as focusing on one participant, grid view with pagination to handle large numbers
@@ -77,34 +61,6 @@ export function VideoConference({ ...props }: VideoConferenceProps) {
 
   const [isShareErrorVisible, setIsShareErrorVisible] = useState(false)
 
-  const handleDeviceError = ({
-    source,
-    error,
-  }: {
-    source: Track.Source
-    error: Error
-  }) => {
-    if (source === Track.Source.ScreenShare) {
-      const scope = getScreenSharePermissionDeniedScope(error)
-      if (scope) {
-        if (scope === 'system') setIsShareErrorVisible(true)
-        void captureMediaEvent('screen-share-permission-denied', {
-          at: 'ControlBar.onDeviceError',
-          source,
-          error_name: error.name,
-          error_message: error.message,
-          denied_scope: scope,
-          os: getOS(),
-        })
-        return
-      }
-    }
-    reportError('device_switch_failure', error, {
-      at: 'ControlBar.onDeviceError',
-      source,
-    })
-  }
-
   return (
     <>
       <RoomMetadataSynchronizer />
@@ -136,7 +92,21 @@ export function VideoConference({ ...props }: VideoConferenceProps) {
                 <StageLayout />
               )}
             </RoomContentArea>
-            <ControlBar onDeviceError={handleDeviceError} />
+            <ControlBar
+              onDeviceError={(e) => {
+                reportError('device_switch_failure', e.error, {
+                  at: 'ControlBar.onDeviceError',
+                  source: e.source,
+                })
+                if (
+                  e.source == Track.Source.ScreenShare &&
+                  e.error.toString() ==
+                    'NotAllowedError: Permission denied by system'
+                ) {
+                  setIsShareErrorVisible(true)
+                }
+              }}
+            />
             <SidePanel />
           </>
         )}

src/frontend/src/locales/de/rooms.json

@@ -214,11 +214,8 @@
       "title": "Bildschirmfreigabe nicht möglich",
       "ariaLabel": "Bildschirmfreigabe nicht möglich",
       "message": "Deinem Browser fehlt möglicherweise die Berechtigung, den Bildschirm deines Geräts abzugreifen.",
-      "settingsInstructions": "Gehe zu den",
-      "settingsLabel": {
-        "macos": "Systemeinstellungen",
-        "windows": "Windows-Datenschutzeinstellungen"
-      },
+      "macInstructions": "Gehe zu den",
+      "macSystemPreferences": "Systemeinstellungen",
       "helpLinkText": "Weitere Informationen findest du unter",
       "helpLinkLabel": "Bildschirmfreigabeproblem",
       "closeButton": "Schließen",

src/frontend/src/locales/en/rooms.json

@@ -214,11 +214,8 @@
       "title": "Unable to share your screen",
       "ariaLabel": "Unable to share your screen",
       "message": "Your browser may not be allowed to record the screen on your computer.",
-      "settingsInstructions": "Go to your",
-      "settingsLabel": {
-        "macos": "System Preferences",
-        "windows": "Windows privacy settings"
-      },
+      "macInstructions": "Go to your",
+      "macSystemPreferences": "System Preferences",
       "helpLinkText": "To learn more, see",
       "helpLinkLabel": "Presentation issue",
       "closeButton": "Dismiss",

src/frontend/src/locales/fr/rooms.json

@@ -214,11 +214,8 @@
       "title": "Impossible de partager votre écran",
       "ariaLabel": "Impossible de partager votre écran",
       "message": "Il se peut que votre navigateur ne soit pas autorisé à enregistrer l'écran sur votre ordinateur.",
-      "settingsInstructions": "Accédez à vos",
-      "settingsLabel": {
-        "macos": "Préférences système",
-        "windows": "paramètres de confidentialité Windows"
-      },
+      "macInstructions": "Accèdez à vos",
+      "macSystemPreferences": "Préférences système",
       "helpLinkText": "Pour en savoir plus, consulter",
       "helpLinkLabel": "Problème de présentation",
       "closeButton": "Ignorer",

src/frontend/src/locales/nl/rooms.json

@@ -214,11 +214,8 @@
       "title": "Kan uw scherm niet delen",
       "ariaLabel": "Kan uw scherm niet delen",
       "message": "Het is mogelijk dat uw browser geen toestemming heeft om het scherm op uw computer op te nemen.",
-      "settingsInstructions": "Ga naar uw",
-      "settingsLabel": {
-        "macos": "Systeemvoorkeuren",
-        "windows": "Windows-privacyinstellingen"
-      },
+      "macInstructions": "Ga naar uw",
+      "macSystemPreferences": "Systeemvoorkeuren",
       "helpLinkText": "Meer informatie, zie",
       "helpLinkLabel": "Presentatieprobleem",
       "closeButton": "Negeren",