CodeSampleX

Sample

create and verify snapshots using SnapshotState and toMatchSnapshot

sha256:b0bcf9cbf79f55b97d64168f221f887e83b81cc546c10ca6912afc0d907a3034

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…
2026-08-26

Case

HOW
Goal
create and verify snapshots using SnapshotState and toMatchSnapshot
Packages
Symbols
  • SnapshotState
  • toMatchSnapshot
Created
2026-08-26T06:45:06Z

Contract

  1. createSnapshotState initializes SnapshotState with snapshot file path and formatting options
  2. matchSnapshot creates context and executes toMatchSnapshot returning pass result
  3. SnapshotState.save writes new snapshot definitions to the target file
  4. matchSnapshot verifies identical data matches saved snapshot when updateSnapshot is none
  5. matchSnapshot detects differences and returns pass=false when payload differs from snapshot
  6. registerSerializer registers custom serializers used by jest-snapshot to format custom types

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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