Node.js 24.21.0
Root importPassed
Root requirePassed
Subpath importsInconclusive12 passed · 2 need optional peers
Subpath requiresInconclusive12 passed · 2 need optional peers
Runtime evidence / smoke tested
preact11.0.0
Observed 2026-10-09 05:28 UTC · Linux amd64 / glibc
Classified 2026-10-11 04:42 UTC · classifier_v3
Version summary · Observation 1 · Report history · Maintainer tools (coming soon)
Selected import result
preact/compat/server.browser
Unconfirmed batch failurepreact@11.0.0 · Bun 1.4.2 · CommonJS require
Observed 2026-10-09 05:28 UTC · Linux amd64 / glibc · Sequential subpath batch
0.29002900000000054 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.browser.js
Failed in the shared batch after entry 10 failed in the same process. No fresh-process confirmation was recorded; this result is inconclusive.
Original batch failure
commonjs_require_failed · module evaluation
The runtime reported a loading failure without a captured error message. Its cause is unknown.
Loading success does not establish functional correctness or package safety. This is one entry; the report’s overall coverage and limitations still apply.
Inconclusive
All applicable planned loading observations completed.
This is loading evidence. It does not establish functional correctness or package safety.
Runtime matrix
4 pinned runtimes · production_ab8496e347ff81172020dc58a21044c5| Runtime | Root import | Root require | Subpath imports | Subpath requires |
|---|---|---|---|---|
| Node.js24.21.0 | Passed | Passed | Inconclusive12 passed · 2 need optional peers | Inconclusive12 passed · 2 need optional peers |
| Node.js26.10.0 | Passed | Passed | Inconclusive12 passed · 2 need optional peers | Inconclusive12 passed · 2 need optional peers |
| Bun1.4.2 | Passed | Passed | Inconclusive12 passed · 1 failed · 1 batch failure unconfirmed | Inconclusive12 passed · 1 needs an optional peer · 1 batch failure unconfirmed |
| Deno2.9.7 | Passed | Passed | Inconclusive12 passed · 2 need optional peers | Inconclusive12 passed · 2 need optional peers |
Node.js 26.10.0
Root importPassed
Root requirePassed
Subpath importsInconclusive12 passed · 2 need optional peers
Subpath requiresInconclusive12 passed · 2 need optional peers
Bun 1.4.2
Root importPassed
Root requirePassed
Deno 2.9.7
Root importPassed
Root requirePassed
Subpath importsInconclusive12 passed · 2 need optional peers
Subpath requiresInconclusive12 passed · 2 need optional peers
Import uses ESM; require uses CommonJS. Root modes use fresh sandboxes. Subpath batches share module caches and globals. Select a result to inspect its evidence.
Does preact work in Node.js, Bun and Deno?
All applicable planned loading checks completed. The runtimes used the same installed dependency snapshot. Test environment: Linux amd64 / glibc, with install scripts and execution networking disabled. Successful import or require does not prove that package functions, native features or your application work.
Does preact work with Node.js?
preact@11.0.0 has inconclusive loading evidence in Node.js 24.21.0. 26 passed · 0 failed · 4 need optional peers.
preact@11.0.0 has inconclusive loading evidence in Node.js 26.10.0. 26 passed · 0 failed · 4 need optional peers.
Does preact work with Bun?
preact@11.0.0 has inconclusive loading evidence in Bun 1.4.2. 26 passed · 1 failed · 1 needs an optional peer · 2 batch failures unconfirmed.
Does preact work with Deno?
preact@11.0.0 has inconclusive loading evidence in Deno 2.9.7. 26 passed · 0 failed · 4 need optional peers.
Compare npm package compatibility across Node.js, Bun and Deno · Browse observed runtime loading failures
Shared preparation
Passed
1 installed packages · 0 optional dependencies omitted · lifecycle scripts disabled
The omitted count covers locked optional dependencies. Optional peers are separate and are not automatically installed.
Static manifest, native and script observations
Static indicators are context; their presence alone does not establish a prerequisite or failure.
Coverage and evidence
Node.js 24.21.0 · Root · ESM importPassed
1 passed · 0 failed · 1 observed of 1 planned
Node.js 24.21.0 · Root · CommonJS requirePassed
1 passed · 0 failed · 1 observed of 1 planned
Node.js 24.21.0 · Subpaths · ESM importInconclusive
12 passed · 2 need optional peers · 14 observed of 14 planned
Missing optional peers explain 2 of 2 recorded failed load attempts.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.mjs
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer0.8418749999999946 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.mjs
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.mjspreact/compat/server.browserRequires optional peer0.7618659999999977 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.browser.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.browser.js
Node.js 24.21.0 · Subpaths · CommonJS requireInconclusive
12 passed · 2 need optional peers · 14 observed of 14 planned
Missing optional peers explain 2 of 2 recorded failed load attempts.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
renderToString() error: missing "preact-render-to-string" dependency.
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer0.6549460000000025 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
renderToString() error: missing "preact-render-to-string" dependency.preact/compat/server.browserRequires optional peer5.803784 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.browser.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.browser.js
Node.js 26.10.0 · Root · ESM importPassed
1 passed · 0 failed · 1 observed of 1 planned
Node.js 26.10.0 · Root · CommonJS requirePassed
1 passed · 0 failed · 1 observed of 1 planned
Node.js 26.10.0 · Subpaths · ESM importInconclusive
12 passed · 2 need optional peers · 14 observed of 14 planned
Missing optional peers explain 2 of 2 recorded failed load attempts.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.mjs
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer0.7717609999999979 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.mjs
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.mjspreact/compat/server.browserRequires optional peer12.462379000000006 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.browser.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.browser.js
Node.js 26.10.0 · Subpaths · CommonJS requireInconclusive
12 passed · 2 need optional peers · 14 observed of 14 planned
Missing optional peers explain 2 of 2 recorded failed load attempts.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
renderToString() error: missing "preact-render-to-string" dependency.
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer0.6093840000000057 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
renderToString() error: missing "preact-render-to-string" dependency.preact/compat/server.browserRequires optional peer5.110692 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.browser.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Cannot find package 'preact-render-to-string' imported from /workspace/node_modules/preact/compat/server.browser.js
Bun 1.4.2 · Root · ESM importPassed
1 passed · 0 failed · 1 observed of 1 planned
Bun 1.4.2 · Root · CommonJS requirePassed
1 passed · 0 failed · 1 observed of 1 planned
Bun 1.4.2 · Subpaths · ESM importInconclusive
12 passed · 1 failed · 1 batch failure unconfirmed · 14 observed of 14 planned
After an earlier failure in the same batch process, 0 of 2 recorded failed load attempts loaded in a fresh process and 1 were not confirmed.
esm_import_failed · module evaluation
The runtime reported a loading failure without a captured error message. Its cause is unknown.
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverFailed0.6145849999999982 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.mjs
esm_import_failed· module evaluation
The runtime reported a loading failure without a captured error message. Its cause is unknown.preact/compat/server.browserUnconfirmed batch failure0.36816200000000165 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.browser.js
Failed in the shared batch after entry 10 failed in the same process. No fresh-process confirmation was recorded; this result is inconclusive.
Original batch failure
esm_import_failed· module evaluation
The runtime reported a loading failure without a captured error message. Its cause is unknown.
Bun 1.4.2 · Subpaths · CommonJS requireInconclusive
12 passed · 1 needs an optional peer · 1 batch failure unconfirmed · 14 observed of 14 planned
Missing optional peers explain 1 of 2 recorded failed load attempts.
After an earlier failure in the same batch process, 0 of 2 recorded failed load attempts loaded in a fresh process and 1 were not confirmed.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
renderToString() error: missing "preact-render-to-string" dependency.
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer0.5129039999999989 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
renderToString() error: missing "preact-render-to-string" dependency.preact/compat/server.browserUnconfirmed batch failure0.29002900000000054 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.browser.js
Failed in the shared batch after entry 10 failed in the same process. No fresh-process confirmation was recorded; this result is inconclusive.
Original batch failure
commonjs_require_failed· module evaluation
The runtime reported a loading failure without a captured error message. Its cause is unknown.
Deno 2.9.7 · Root · ESM importPassed
1 passed · 0 failed · 1 observed of 1 planned
Deno 2.9.7 · Root · CommonJS requirePassed
1 passed · 0 failed · 1 observed of 1 planned
Deno 2.9.7 · Subpaths · ESM importInconclusive
12 passed · 2 need optional peers · 14 observed of 14 planned
Missing optional peers explain 2 of 2 recorded failed load attempts.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
Could not find package 'preact-render-to-string' from referrer 'file:///workspace/node_modules/preact/compat/server.mjs'.
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer0.37540599999999813 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.mjs
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Could not find package 'preact-render-to-string' from referrer 'file:///workspace/node_modules/preact/compat/server.mjs'.preact/compat/server.browserRequires optional peer0.5071719999999971 ms in the original load · Originally resolved to file:///workspace/node_modules/preact/compat/server.browser.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Could not find package 'preact-render-to-string' from referrer 'file:///workspace/node_modules/preact/compat/server.browser.js'.
Deno 2.9.7 · Subpaths · CommonJS requireInconclusive
12 passed · 2 need optional peers · 14 observed of 14 planned
Missing optional peers explain 2 of 2 recorded failed load attempts.
Requires optional peer: preact-render-to-string
Declared range: >=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.
optional_peer_missing · module resolution
renderToString() error: missing "preact-render-to-string" dependency.
Non-passing imports
Recorded loading errors and inconclusive entries are shown here without loading raw logs.
preact/compat/serverRequires optional peer1.5827919999999978 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
renderToString() error: missing "preact-render-to-string" dependency.preact/compat/server.browserRequires optional peer1.1345210000000066 ms in the original load · Originally resolved to /workspace/node_modules/preact/compat/server.browser.js
Requires optional peer:
preact-render-to-string
Declared range:>=6.7.0. This dependency was not installed in the tested snapshot. Compatibility for this entry is inconclusive; the loading error does not establish a runtime incompatibility.optional_peer_missing· module resolution
Could not find package 'preact-render-to-string' from referrer 'file:///workspace/node_modules/preact/compat/server.browser.js'.
Planner omissions
- pattern
- 0
- non executable
- 7
- not exported
- 0
- invalid subpath
- 0
- coverage limit
- 0
./package.json— non executable./compat/package.json— non executable./debug/package.json— non executable./devtools/package.json— non executable./hooks/package.json— non executable./test-utils/package.json— non executable./jsx-runtime/package.json— non executable
Reproduce these inputs
Download the recorded inputs and exact dependency lock. These files do not include the CLI, runtime images or installed packages.
Local replay requires setup. The CLI currently runs from the CompatLab source repository on a qualified Linux amd64/runsc host. Hosted runtime images are not yet distributed for public download; an operator must supply the exact images named in this report. A fresh image build does not substitute for them. CLI setup and replay requirements
Command for a configured host
Run from the built CompatLab repository with both downloads in that directory and the exact runtime images loaded. Rebuilding creates a new snapshot generation.
sudo "$(command -v node)" apps/cli/dist/bin.js reproduce ./168162ff-c6c3-4861-9064-a2f18094ac11-reproduction.json --rebuild --lockfile ./package-lock.json --jsonThe original worker last reported its sealed snapshot as available. Verified reuse requires those actual bytes in your local state directory.
Exact provenance
- artifact
preact@11.0.0- integrity
sha512-LRTLKuSe6VYPhvBDjwFaX+nuZnpsw6IN2GSboisAvhGsncylBmrbDCERhgKDn6yP2mAwbGvsB5OVyTe33M8gBg==- tarball
https://registry.npmjs.org/preact/-/preact-11.0.0.tgz- snapshot
5adfc437-031f-4443-8cd1-fa6ea475a4b1- generation
033a249b-b4c1-4bad-9b4e-dcb586d88652- lockDigest
ed87c621cac1befd6cfc9982e7ceb7c9ddc881a3b5e08aa44dface3201ed96c1- treeDigest
6112a50f6235ed2b38d7d0fa09ac040cc4d5d95cecc45c820a9379690caf0a71- installerImage
node:24.21.0-bookworm-slim@sha256:5cbc7caba8c2c0f0bca675d1b61b9f2857e1cf1853c6164ee9dd409501a936e7- preparationProfile
npm_11_19_0_linux_amd64_v2- harness
load_v2- planner
explicit_exports_v1- policy
runtime_limits_v2- classifier
classifier_v3- classifiedAt
2026-10-11T04:42:52.386Z
node_24_21_0
sha256:ae61554e1d39b7a8aaa8ed25f3bf8dc883176e544d0c7b9b461618ad0930cd6d
Built 2026-10-04 15:20 UTC · runtime_image_v1
node_26_10_0
sha256:c26032c5da3d5f0b93e391591be439a6ed5d9cdf47fc854b7d715c50794c0c6e
Built 2026-10-04 15:20 UTC · runtime_image_v1
bun_1_4_2
sha256:661406fb7c65de07544f88300466de4b5f52dff7aa4866ca4114377d6825bb11
Built 2026-10-04 15:21 UTC · runtime_image_v1
deno_2_9_7
sha256:e38d0b2ed731e26a252e1c17f60960916d1efc1d1dc4d43a5ca6667818248b66
Built 2026-10-04 15:21 UTC · runtime_image_v1
Evidence limitations
- Only installation and loading were observed; functional correctness and package safety are not established.
- Subpath batches share module caches and globals; root modes use separate fresh sandboxes.
- Package-visible harness observations can be tampered with. They are not adversarial attestation.
- Evidence applies to these exact artifacts, dependency snapshot, runtime images and Linux amd64/glibc policy.
- Runtime error codes are captured observations and can also be thrown by package code.