CodeSampleX

Sample

Asynchronously traverse and modify YAML AST with visitAsync

sha256:1252c8c3eb7dd04c41fbf774e291102f99ad969814cd1b8997c64f4665dc6309

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 linux 24 · ubuntu · glibc 2.39 x64 npm wsl

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
Asynchronously traverse and modify YAML AST with visitAsync
Packages
Symbols
  • visitAsync
Created
2026-08-19T12:01:59Z

Contract

  1. assert visitAsync asynchronously traverses YAML AST nodes including Document, Map, Seq, Pair, and Scalar
  2. assert visitAsync modifies Scalar node values and replaces nodes during async traversal
  3. assert visitAsync removes nodes and key-value pairs when visitor returns visitAsync.REMOVE
  4. assert visitAsync halts traversal immediately when visitor returns visitAsync.BREAK
  5. assert visitAsync skips child node inspection when visitor returns visitAsync.SKIP

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous