CodeSampleX

Sample

verify acorn.parseExpressionAt in pkg:npm/acorn@8.18.0

sha256:09d1876f21b3e3e2b52b152f2f9b00ac4e3390c2c79cdbb48e6721c4aad5da1b

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 linux 24 · ubuntu · glibc 2.39 x64 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…
2026-08-26

Case

HOW
Goal
verify acorn.parseExpressionAt in pkg:npm/acorn@8.18.0
Packages
Symbols
  • acorn.parseExpressionAt
Created
2026-08-26T11:02:16Z

Contract

  1. acorn.parseExpressionAt(input, offset, options) parses a single JavaScript expression starting at the given offset and returns an AST Node
  2. acorn.parseExpressionAt returns node with correct type, start, end, and expression-specific fields
  3. acorn.parseExpressionAt supports locations and ranges options for source mapping
  4. acorn.parseExpressionAt supports ecmaVersion option for modern ECMAScript syntax features
  5. acorn.parseExpressionAt throws SyntaxError when given invalid JavaScript syntax at the offset

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous