CodeSampleX

Sample

verify @babel/core.transformAsync in pkg:npm/%40babel/core@7.22.5

sha256:a794f4590e3423beb1c9664dd1c01fb7d162c2d1bcb7584e382f255119e7409b

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 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@1
2026-08-20

Case

HOW
Goal
verify @babel/core.transformAsync in pkg:npm/%40babel/core@7.22.5
Packages
Symbols
  • @babel/core.transformAsync
Environment
node 22.23.2
Created
2026-08-20T15:24:09Z

Contract

  1. transformAsync asynchronously transforms JavaScript code and returns a result object containing the generated code
  2. transformAsync applies custom visitor plugins during asynchronous code transformation
  3. transformAsync generates sourcemaps when sourceMaps option is enabled
  4. transformAsync returns an AST root node when ast option is set to true
  5. transformAsync rejects with a SyntaxError when passed invalid JavaScript syntax
  6. safeTransformAsync handles errors gracefully without throwing unhandled exceptions
  7. transformAsync accepts configFile false and babelrc false to isolate execution from external configuration

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous