Bring back lastEventId API #11951

Description

@Lms24

Problem Statement

The king is dead, long live the king...

We removed lastEventId in #10585 due to several shortcomings of this API:

  • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
  • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
  • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

Solution Brainstorm

In an effort to minimize friction we should bring back this API:

  • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
  • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
  • Unchanged to previous implementation: only update the id with error events
  • Add a big warning that this API returns potentially nonsense
### Tasks
- [ ] https://github.com/getsentry/sentry-javascript/pull/12022
- [ ] https://github.com/getsentry/sentry-javascript/pull/12029
- [ ] https://github.com/getsentry/sentry-javascript/pull/12042
- [x] Update migration docs
- [ ] https://github.com/getsentry/sentry-docs/pull/10127

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    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
    }
    } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
    })();
    (function(){
    try {
    var __m = "github.com";
    var __re = new RegExp('^' + "github\\.com" + '
    
    Skip to content

    Bring back lastEventId API #11951

    Description

    @Lms24

    Problem Statement

    The king is dead, long live the king...

    We removed lastEventId in #10585 due to several shortcomings of this API:

    • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
    • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
    • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

    Solution Brainstorm

    In an effort to minimize friction we should bring back this API:

    • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
    • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
    • Unchanged to previous implementation: only update the id with error events
    • Add a big warning that this API returns potentially nonsense
    ### Tasks
    - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
    - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
    - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
    - [x] Update migration docs
    - [ ] https://github.com/getsentry/sentry-docs/pull/10127
    

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
      Skip to content

      Bring back lastEventId API #11951

      Description

      @Lms24

      Problem Statement

      The king is dead, long live the king...

      We removed lastEventId in #10585 due to several shortcomings of this API:

      • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
      • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
      • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

      Solution Brainstorm

      In an effort to minimize friction we should bring back this API:

      • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
      • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
      • Unchanged to previous implementation: only update the id with error events
      • Add a big warning that this API returns potentially nonsense
      ### Tasks
      - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
      - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
      - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
      - [x] Update migration docs
      - [ ] https://github.com/getsentry/sentry-docs/pull/10127
      

      Activity

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        , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
        Skip to content

        Bring back lastEventId API #11951

        Description

        @Lms24

        Problem Statement

        The king is dead, long live the king...

        We removed lastEventId in #10585 due to several shortcomings of this API:

        • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
        • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
        • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

        Solution Brainstorm

        In an effort to minimize friction we should bring back this API:

        • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
        • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
        • Unchanged to previous implementation: only update the id with error events
        • Add a big warning that this API returns potentially nonsense
        ### Tasks
        - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
        - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
        - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
        - [x] Update migration docs
        - [ ] https://github.com/getsentry/sentry-docs/pull/10127
        

        Activity

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          , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
          Skip to content

          Bring back lastEventId API #11951

          Description

          @Lms24

          Problem Statement

          The king is dead, long live the king...

          We removed lastEventId in #10585 due to several shortcomings of this API:

          • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
          • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
          • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

          Solution Brainstorm

          In an effort to minimize friction we should bring back this API:

          • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
          • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
          • Unchanged to previous implementation: only update the id with error events
          • Add a big warning that this API returns potentially nonsense
          ### Tasks
          - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
          - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
          - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
          - [x] Update migration docs
          - [ ] https://github.com/getsentry/sentry-docs/pull/10127
          

          Activity

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            , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
            Skip to content

            Bring back lastEventId API #11951

            Description

            @Lms24

            Problem Statement

            The king is dead, long live the king...

            We removed lastEventId in #10585 due to several shortcomings of this API:

            • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
            • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
            • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

            Solution Brainstorm

            In an effort to minimize friction we should bring back this API:

            • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
            • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
            • Unchanged to previous implementation: only update the id with error events
            • Add a big warning that this API returns potentially nonsense
            ### Tasks
            - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
            - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
            - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
            - [x] Update migration docs
            - [ ] https://github.com/getsentry/sentry-docs/pull/10127
            

            Activity

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              , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
              Skip to content

              Bring back lastEventId API #11951

              Description

              @Lms24

              Problem Statement

              The king is dead, long live the king...

              We removed lastEventId in #10585 due to several shortcomings of this API:

              • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
              • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
              • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

              Solution Brainstorm

              In an effort to minimize friction we should bring back this API:

              • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
              • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
              • Unchanged to previous implementation: only update the id with error events
              • Add a big warning that this API returns potentially nonsense
              ### Tasks
              - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
              - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
              - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
              - [x] Update migration docs
              - [ ] https://github.com/getsentry/sentry-docs/pull/10127
              

              Activity

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                No milestone

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                , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
                Skip to content

                Bring back lastEventId API #11951

                Description

                @Lms24

                Problem Statement

                The king is dead, long live the king...

                We removed lastEventId in #10585 due to several shortcomings of this API:

                • It would return potentially unexpected event ids, for example when multiple errors were caught in sequence
                • The last eventId was updated directly in captureEvent, before processing and sending the event. Meaning, if users or our event processors dropped the event, lastEventId would return an id of an event that wasn't ever sent from the SDK.
                • Depending on how Hub was used, it could potentially bleed through requests/"leak" an event id of another request if there was no proper request isolation set up.

                Solution Brainstorm

                In an effort to minimize friction we should bring back this API:

                • Store it on the isolation scope (--> ideally avoids cross-request bleeds on server; doesn't matter for browser)
                • Update the last event id on the isolation scope directly before sending the event (i.e. when chances are low that the event is still dropped on the client side)
                • Unchanged to previous implementation: only update the id with error events
                • Add a big warning that this API returns potentially nonsense
                ### Tasks
                - [ ] https://github.com/getsentry/sentry-javascript/pull/12022
                - [ ] https://github.com/getsentry/sentry-javascript/pull/12029
                - [ ] https://github.com/getsentry/sentry-javascript/pull/12042
                - [x] Update migration docs
                - [ ] https://github.com/getsentry/sentry-docs/pull/10127
                

                Activity

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