CodeSampleX

Sample

verify @babel/core in pkg:npm/%40babel/core@7.27.4

sha256:35c54b65d4802c577c6951092d8889f1b7f3a1f05d27e8191f2035becdc990d4

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

Execution context
node 22
Operating system
linux
Architecture
x64
Runtime
node 22
Language
javascript
Package manager
npm

Verification-run environments

node 22 · linux alpine/x64 · docker PASS
Execution context
node 22
Operating system
linux alpine · musl
Architecture
x64
Runtime
node 22
Language
javascript
Package manager
npm
Execution
container · docker

CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-19

Case

HOW
Goal
verify @babel/core in pkg:npm/%40babel/core@7.27.4
Packages
Symbols
  • @babel/core
  • parseSync
  • types.isImportExpression
  • types.isImport
Environment
node 22
Created
2026-08-18T13:23:20Z

Contract

  1. Babel 7.27.4 parseSync represents dynamic import as a CallExpression with an Import callee by default.
  2. types.isImportExpression rejects the default Babel 7 node while types.isImport accepts its callee.
  3. parserOpts.createImportExpressions true produces an ImportExpression with a source property.
  4. the opt-in ImportExpression has neither callee nor arguments properties.

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous

Verification receipts

  • node 22 · linux alpine/x64 · docker PASS
    CONTAINER_RUN compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS node-typescript@1
    ed25519:2175b912ea1c23b1