CodeSampleX

Sample

verify pkg:npm/dunder-proto@1.0.1

sha256:5101f9e9fef0b102924b4708e82147a68aa3fdc3737fbb423873373554c8a60a

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment windows 11 x64 npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-19

Case

HOW
Goal
verify pkg:npm/dunder-proto@1.0.1
Packages
Symbols
  • dunder-proto/get
  • dunder-proto/set
Created
2026-08-18T18:05:31Z

Contract

  1. dunder-proto/get retrieves prototype of standard objects and primitives
  2. dunder-proto/set mutates prototype of extensible objects
  3. dunder-proto/set throws TypeError when called on null or undefined

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous