CodeSampleX

Sample

postcss 8.5.25

Verified sample for npm postcss 8.5.25. The contract ran on node 22 · linux alpine/x64 · docker and passed: assert postcss.parse parses CSS into an AST Root…

sha256:1a22e71fbe88e6f1587f7d914680dace98a77d685987da9632aed9aa0bcd13a7

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 pkg:npm/postcss@8.5.25
Packages
Environment
node 22.23.2
Created
2026-08-20T19:23:24Z

Contract

  1. assert postcss.parse parses CSS into an AST Root node containing AtRule, Rule, Declaration, and Comment child nodes
  2. assert root.walkDecls and root.walkRules traverse descendant nodes with optional property or selector name filtering
  3. assert postcss.root, postcss.rule, and postcss.decl construct AST nodes programmatically and serialize into formatted CSS
  4. assert AST mutation methods including clone, replaceWith, remove, and after modify the node tree and update toString output
  5. assert postcss.parse throws CssSyntaxError with line and column information when parsing malformed or unclosed CSS syntax

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous