CodeSampleX

Sample

verify @babel/code-frame.highlight in pkg:npm/%40babel/code-frame@8.0.0

sha256:ef05de32bf21663da156edab42e53eae497e790e8e79ab77582175039119bf2f

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 @babel/code-frame.highlight in pkg:npm/%40babel/code-frame@8.0.0
Packages
Symbols
  • @babel/code-frame.highlight
Environment
node 22.23.2
Created
2026-08-20T21:01:37Z

Contract

  1. highlight returns an empty string when given an empty input string
  2. highlight formats JavaScript keywords with cyan ANSI escape sequences
  3. highlight formats string literals with green ANSI color codes and numeric literals with magenta
  4. highlight formats single-line comments with gray ANSI escape codes and punctuators with yellow
  5. highlight colors JSX element tags and capitalized component identifiers
  6. stripAnsiEscapeCodes restores the original source code text from highlighted output

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