CodeSampleX

Sample

verify pkg:npm/%40webassemblyjs/helper-api-error@1.13.2

sha256:15544264abdfbad4944a2372169cb21686c52fe98da455fee1cc31a6f65f305a

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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/%40webassemblyjs/helper-api-error@1.13.2
Packages
Symbols
  • RuntimeError
Created
2026-08-27T23:19:52Z

Contract

  1. RuntimeError constructs an instance that inherits from Error
  2. RuntimeError preserves custom error message passed to constructor
  3. CompileError and LinkError construct instances that inherit from Error
  4. RuntimeError can be thrown and caught in try-catch block

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous