Sample
verify pkg:npm/postcss@8.5.25
sha256:1a22e71fbe88e6f1587f7d914680dace98a77d685987da9632aed9aa0bcd13a7
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 pkg:npm/postcss@8.5.25
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-20T19:23:24Z
Contract
- assert postcss.parse parses CSS into an AST Root node containing AtRule, Rule, Declaration, and Comment child nodes
- assert root.walkDecls and root.walkRules traverse descendant nodes with optional property or selector name filtering
- assert postcss.root, postcss.rule, and postcss.decl construct AST nodes programmatically and serialize into formatted CSS
- assert AST mutation methods including clone, replaceWith, remove, and after modify the node tree and update toString output
- 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
Origin Seeder
anonymous