Innovation Week POC: Live Debugger browser support by watson · Pull Request #4004 · DataDog/browser-sdk

watson · 2025-12-05T19:43:17Z

No description provided.

It should probably live somewhere else, but for now I've just hardcoded it in the sandbox app as a starting point

watson · 2025-12-08T19:50:45Z

/merge

dd-devflow-routing-codex · 2025-12-08T19:50:49Z

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2025-12-08 19:50:49 UTC ℹ️ Start processing command /merge

2025-12-08 19:50:55 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in live-debugger-inno-week is approximately 0s (p90).

2025-12-08 19:51:22 UTC ⚠️ MergeQueue: This merge request build was cancelled

thomas.watson@datadoghq.com cancelled this merge request build

watson · 2025-12-08T19:51:13Z

/merge --cancel

dd-devflow-routing-codex · 2025-12-08T19:51:17Z

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2025-12-08 19:51:16 UTC ℹ️ Start processing command /merge --cancel

github-actions · 2025-12-09T09:26:28Z

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ahfuckit · 2026-01-15T03:30:59Z

_ No description provided. _
edited from
It should probably live somewhere else, but for now I've just hardcoded it in the sandbox app as a starting point

Why? Somewhere less obvious? Don't want to get caught?

thomas-lebeau · 2026-03-03T07:48:37Z

@watson, in order to better keep track of PRs that need our attention, I'm gonna convert this PR to draft.

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chatgpt-codex-connector · 2026-03-13T11:00:44Z

+    if (
+      start - probe.lastCaptureMs < probe.msBetweenSampling ||
+      !checkGlobalSnapshotBudget(start, probe.captureSnapshot)


Move sampling checks after condition evaluation

The sampling gate runs before any condition is evaluated, so a probe call with a false condition still consumes snapshot budget and advances the probe’s sampling window. In onEntry, this means high-frequency false evaluations can throttle later true evaluations and silently drop snapshots that should have been captured.

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chatgpt-codex-connector · 2026-03-13T11:00:44Z

+  const stackLines = error.stack.split('\n')
+
+  // Skip the first line (error message), the captureStackTrace frame, and any additional frames to skip
+  for (let i = 2 + skipFrames; i < stackLines.length; i++) {


Start parseStackTrace at first real frame for thrown errors

parseStackTrace always skips two lines, which is only correct for internally created errors in captureStackTrace; when called with a real thrown error (onThrow uses parseStackTrace(error)), it drops the top stack frame where the exception actually originated. This reduces snapshot accuracy by removing the most relevant frame.

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chatgpt-codex-connector · 2026-03-13T11:00:44Z

+// Cache hostname at module initialization since it won't change during the app lifetime
+const hostname = typeof window !== 'undefined' && window.location ? window.location.hostname : 'unknown'
+
+const serviceVersion = `1.0.0-${crypto.randomUUID().slice(0, 8)}` // eslint-disable-line local-rules/disallow-side-effects


Add fallback when crypto.randomUUID is unavailable

This module initializes serviceVersion with crypto.randomUUID() at import time, so environments that lack randomUUID (common in older Safari/Chromium builds and many embedded WebViews) will throw before init() can run. That makes the live debugger fail to load entirely in those clients.

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watson · 2026-03-13T11:04:59Z

This PR currently points to the branch of this PR: #3996

I think we're ready to land both this PR that the one it's point to, so work can continue in incremental PRs towards the main branch instead of being contained in a single huge PR.

watson · 2026-03-13T11:24:27Z

/merge

gh-worker-devflow-routing-ef8351 · 2026-03-13T11:24:32Z

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2026-03-13 11:24:32 UTC ℹ️ Start processing command /merge

2026-03-13 11:24:33 UTC ℹ️ MergeQueue: Stack detected — automatically merging the entire stack.

watson · 2026-03-13T11:57:40Z

This seems to have been detected as a stack PR by the Merge Queue, so I will instead close this PR and make a new PR that's the sum of these two PRs.

watson requested a review from a team as a code owner December 5, 2025 19:43

watson force-pushed the watson/debugger-code branch 5 times, most recently from f96d981 to c1de598 Compare December 5, 2025 21:54

Add Live Debugger code

102a611

It should probably live somewhere else, but for now I've just hardcoded it in the sandbox app as a starting point

watson force-pushed the watson/debugger-code branch from c1de598 to 102a611 Compare December 5, 2025 22:26

watson added 3 commits December 6, 2025 09:36

Fix tests

c6a9bd0

Run prettier

4f60d33

Ignore .DS_Store

3233fd1

watson requested a review from a team as a code owner December 6, 2025 10:45

watson changed the title ~~✨ Add live debugger integration and configuration options~~ Innovation Week POC: Live Debugger browser support Dec 6, 2025

watson force-pushed the watson/debugger-code branch from 1365737 to 4177de3 Compare December 6, 2025 10:53

Add missing path to tsconfig

5d2c4af

watson force-pushed the watson/debugger-code branch 4 times, most recently from 4a453f7 to b9b2fb2 Compare December 6, 2025 16:33

Move live debugger code to proper package

2a06d8a

watson force-pushed the watson/debugger-code branch from b9b2fb2 to 2a06d8a Compare December 6, 2025 16:34

Move live debugger code from rum-code to live-debugger

8e68b99

watson force-pushed the watson/debugger-code branch 2 times, most recently from e013a4d to 9fa4ebf Compare December 7, 2025 22:55

Some fixes

9747843

watson force-pushed the watson/debugger-code branch 3 times, most recently from 0b4dea7 to 3b3235f Compare December 8, 2025 10:52

Add RC Proxy

7399fd1

watson force-pushed the watson/debugger-code branch from 3b3235f to 7399fd1 Compare December 8, 2025 12:27

estherk15 approved these changes Dec 8, 2025

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dd-devflow bot added mergequeue-status: queued mergequeue-status: in_progress and removed mergequeue-status: queued labels Dec 8, 2025

dd-devflow bot added mergequeue-status: removed and removed mergequeue-status: in_progress labels Dec 8, 2025

watson added 4 commits December 9, 2025 10:05

Performance improvements

0bf62b5

Improve RC Proxy

3e57630

Add benchmark

c8b5450

Update test html page

187ea9d

watson added 2 commits December 9, 2025 10:31

cleanup

e3a9142

prettier

cd26a35

watson force-pushed the watson/debugger-code branch from 011c2f8 to cd26a35 Compare December 9, 2025 14:14

bcaudan added the do-not-merge/WIP label Jan 27, 2026

thomas-lebeau marked this pull request as draft March 3, 2026 07:48

watson marked this pull request as ready for review March 13, 2026 10:53

chatgpt-codex-connector bot reviewed Mar 13, 2026

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watson closed this Mar 13, 2026

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