CodeSampleX

Sample

transform duplicate named capturing groups in regular expressions with babel plugin

sha256:9babce9d9d99ac7444c982685c5758af579ccfe75256ed61e7418d60a2568833

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

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node linux 24 · ubuntu · glibc 2.39 x64 node node 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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-23

Case

HOW
Goal
transform duplicate named capturing groups in regular expressions with babel plugin
Packages
Environment
node
Created
2026-08-23T18:08:21Z

Contract

  1. @babel/plugin-transform-duplicate-named-capturing-groups-regex compiles duplicate named capturing groups across disjunction branches into wrapped regex helper
  2. transformed regex resolves match.groups.<name> for the first branch (YYYY-MM)
  3. transformed regex resolves match.groups.<name> for the second branch (MM-YYYY)
  4. transformed regex returns null when input does not match
  5. String.prototype.replace substitutes $<name> group references correctly using the transformed regex

Files

  • NOTES.md
  • 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

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