CodeSampleX

Sample

verify pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1

sha256:08c417e21bab69fd6bb4e396712fb01b2f86ff45daf344ce99e412ad9bdf0d25

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

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 pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1
Packages
Environment
node 22.23.2
Created
2026-08-20T17:46:49Z

Contract

  1. plugin exports a Babel plugin declaration function
  2. plugin returns a plugin object with name transform-duplicate-named-capturing-groups-regex and RegExpLiteral visitor
  3. plugin transforms duplicate named capturing groups into numbered groups wrapped with runtime helper
  4. transformed regex correctly populates named capture groups for both branches during exec and match
  5. transformed regex supports multiple duplicate named groups across alternation branches
  6. transformed regex supports string replacement using named capture group syntax
  7. transformed regex supports function replacement receiving named capture groups
  8. plugin leaves regular expressions without duplicate named capturing groups untouched

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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