Sample
verify pkg:npm/detect-libc@2.1.2
sha256:2acdc27c7fc287cb5ecbbfd0ace9ae0797a22177dd43b78663238fbdb9a6b58d
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-27 |
Case
HOW- Goal
- verify pkg:npm/detect-libc@2.1.2
- Packages
- Symbols
-
- detect-libc.GLIBC
- detect-libc.MUSL
- detect-libc.family
- detect-libc.familySync
- detect-libc.isNonGlibcLinux
- detect-libc.isNonGlibcLinuxSync
- detect-libc.version
- detect-libc.versionSync
- Environment
- node 22.23.2
- Created
- 2026-08-27T22:04:44Z
Contract
- assert detect-libc exports GLIBC ('glibc') and MUSL ('musl') string constants and removes legacy v1 property 'method'
- assert family, version, and isNonGlibcLinux are async functions returning Promises, while familySync, versionSync, and isNonGlibcLinuxSync are synchronous functions
- assert unawaited async family() call returns a Promise instance rather than a string value
- assert parity between synchronous and asynchronous APIs where familySync() === await family(), versionSync() === await version(), and isNonGlibcLinuxSync() === await isNonGlibcLinux()
- assert on Linux platforms, familySync() returns 'glibc', 'musl', or null, with isNonGlibcLinuxSync() returning true for musl and false for glibc
- assert migration trap evaluation confirms functions are truthy in boolean expressions and v1 property access fails
- assert parseLibcVersion and compareLibcVersions correctly handle non-semver 2-part libc version strings without throwing errors
- assert satisfiesMinLibcVersion accurately validates minimum libc version requirements against detected version
- assert resolveAddonBinary maps platform architecture and libc family to the appropriate prebuilt binary suffix
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/libc-addon-resolver.mjs
- test/contract.mjs
Origin Seeder
anonymous