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feat(deno): Register channel injection hooks from init() - #25546

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isaacschlueter/js-3518-deno-init-never-registers-the-channel-injection-hooks-though
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isaacschlueter/js-3518-deno-init-never-registers-the-channel-injection-hooks-though

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@isaacs

@isaacs isaacs commented Oct 20, 2026

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Node's init() registers the diagnostics-channel injection hooks, but Deno's did not. A Deno user had to run with
--preload=npm:@sentry/deno/import, and got no warning without it. The channel integrations still reported that they were installed, but recorded no spans.

DenoClient now registers the hooks in its constructor, as NodeClient does, behind the same enableRuntimeChannelInjection option. init() then calls detectOrchestrionSetup(), which warns under debug: true when no injection is active. The hooks only apply to modules imported after init(). @sentry/deno/import still covers modules imported before it, such as static imports in the entry module.

The injection package could not load on Deno without env permission. Its vendored debug package, and the supports-color that debug loads, read process.env at import time, and Deno throws on that read. The build now replaces debug with a small shim that logs through the Sentry logger. Because of this, tracing-hooks messages on Node now appear under debug: true and no longer under DEBUG=@apm-js-collab/*. The build also wraps the process.env.TRACING_DUMP read in tracing-hooks in a try/catch, so a transformed module does not count as failed when the read throws.

Fixes #23892
Fixes JS-3518

Node's `init()` registers the diagnostics-channel injection hooks, but
Deno's did not. A Deno user had to run with
`--preload=npm:@sentry/deno/import`, and got no warning without it. The
channel integrations still reported that they were installed, but
recorded no spans.

`DenoClient` now registers the hooks in its constructor, as `NodeClient`
does, behind the same `enableRuntimeChannelInjection` option. `init()`
then calls `detectOrchestrionSetup()`, which warns under `debug: true`
when no injection is active. The hooks only apply to modules imported
after `init()`. `@sentry/deno/import` still covers modules imported
before it, such as static imports in the entry module.

The injection package could not load on Deno without env permission.
Its vendored `debug` package, and the `supports-color` that `debug`
loads, read `process.env` at import time, and Deno throws on that read.
The build now replaces `debug` with a small shim that logs through the
Sentry logger. Because of this, tracing-hooks messages on Node now
appear under `debug: true` and no longer under `DEBUG=@apm-js-collab/*`.
The build also wraps the `process.env.TRACING_DUMP` read in tracing-hooks
in a try/catch, so a transformed module does not count as failed when
the read throws.

Fixes #23892
Fixes JS-3518

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
@isaacs
isaacs requested a review from a team as a code owner October 20, 2026 04:18
@isaacs
isaacs requested review from JPeer264 and mydea and removed request for a team October 20, 2026 04:18
@linear-code

linear-code Bot commented Oct 20, 2026

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JS-3518

@github-actions

github-actions Bot commented Oct 20, 2026 •

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size-limit report 📦

Path Size % Change Change
@sentry/browser 29.88 kB - -
@sentry/browser - with treeshaking flags 28.02 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 27.92 kB - -
@sentry/browser (incl. Tracing) 52.07 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 52.07 kB - -
@sentry/browser (incl. Tracing, Profiling) 55.02 kB - -
@sentry/browser (incl. Tracing, Replay) 91.82 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 80.68 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 96.55 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 109.49 kB - -
@sentry/browser (incl. Feedback) 47.4 kB - -
@sentry/browser (incl. sendFeedback) 34.94 kB - -
@sentry/browser (incl. FeedbackAsync) 40.05 kB - -
@sentry/browser (incl. Metrics) 30.9 kB - -
@sentry/browser (incl. Logs) 31.18 kB - -
@sentry/browser (incl. Metrics & Logs) 31.81 kB - -
@sentry/react 31.7 kB - -
@sentry/react (incl. Tracing) 54.39 kB - -
@sentry/vue 38.04 kB - -
@sentry/vue (incl. Tracing) 55.01 kB - -
@sentry/svelte 29.9 kB - -
@sentry/remix (Remix 3 client bundle) 57.08 kB - -
CDN Bundle 31.64 kB - -
CDN Bundle (incl. Tracing) 52.58 kB - -
CDN Bundle (incl. Logs, Metrics) 33.84 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 54.52 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 74.77 kB - -
CDN Bundle (incl. Tracing, Replay) 90.25 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 92.18 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) 96.4 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 98.34 kB - -
CDN Bundle - uncompressed 93.18 kB - -
CDN Bundle (incl. Tracing) - uncompressed 156.03 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 99.72 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 161.99 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 229.76 kB - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 276.2 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 282.14 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 289.9 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 295.84 kB - -
@sentry/nextjs (client) 56.74 kB - -
@sentry/sveltekit (client) 52.45 kB - -
@sentry/core/server 41.17 kB - -
@sentry/core/browser 13.81 kB - -
@sentry/node 152.39 kB -1.78% -2.75 kB 🔽
@sentry/node/import (ESM hook with diagnostics-channel injection) 81.48 kB -3.07% -2.58 kB 🔽
@sentry/node - without tracing 94.07 kB -2.84% -2.74 kB 🔽
@sentry/node - without channel injection 133.17 kB -0.01% -1 B 🔽
@sentry/aws-serverless 102.26 kB -2.63% -2.76 kB 🔽
@sentry/cloudflare (withSentry) - minified 210.89 kB - -
@sentry/cloudflare (withSentry) 523.17 kB - -
@sentry/nextjs/cloudflare (withSentry) - minified 230.51 kB - -

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@isaacs

isaacs commented Oct 20, 2026

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Bugbot run

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✅ Bugbot reviewed your changes and found no new issues!

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Reviewed by Cursor Bugbot for commit 2764700. Configure here.

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deno: init() never registers the channel-injection hooks, though Deno supports them

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