CodeSampleX

Sample

@babel/helper-validator-identifier 8.0.4: isIdentifierStart

Verified sample for npm @babel/helper-validator-identifier 8.0.4: isIdentifierStart. The contract ran on node 22 · linux alpine/x64 · docker and passed…

sha256:5ba66b3086ccc45f02c9922f9adeaae6fcace718e1423b9b7fe23b9867dfe10f

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 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 @babel/helper-validator-identifier.isIdentifierStart in pkg:npm/%40babel/helper-validator-identifier@8.0.4
Packages
Symbols
  • @babel/helper-validator-identifier.isIdentifierStart
Environment
node 22.23.2
Created
2026-08-20T21:10:01Z

Contract

  1. isIdentifierStart returns true for ASCII letters (both lowercase and uppercase), dollar sign, and underscore character codes
  2. isIdentifierStart returns false for ASCII decimal digit character codes 0 through 9
  3. isIdentifierStart returns true for Unicode letter and symbol character codes that qualify as valid identifier start characters
  4. isIdentifierStart returns false for ASCII whitespace and newline character codes such as space, tab, and newline
  5. isIdentifierStart returns false for punctuation and operator character codes such as hyphen, at sign, exclamation mark, dot, slash, and backslash

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous