CodeSampleX

Sample

verify pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7

sha256:74c04303144b550e67c36e463135739c62ac907244a89e29db038efa7e8d9996

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

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

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@1
2026-08-21

Case

HOW
Goal
verify pkg:npm/%40babel/plugin-transform-duplicate-keys@7.29.7
Packages
Created
2026-08-21T06:54:50Z

Contract

  1. Plugin default export is a function factory asserting Babel 7 compatibility
  2. Plugin factory returns an object named transform-duplicate-keys with ObjectExpression visitor method
  3. ObjectExpression visitor marks duplicate data properties as computed string literals
  4. ObjectExpression visitor detects duplicates across getters, setters, and data properties
  5. ObjectExpression visitor ignores spread elements and already computed properties
  6. Module helpers instantiate plugin and transform duplicate keys in AST object expressions

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