CodeSampleX

Sample

traverse AST using esrecurse visit with custom visitor

sha256:eddc9057c1000595375ae5f9a6df2c7b375e1c23034ab7b2f729e514d88bc39b

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…
2026-08-27

Case

HOW
Goal
traverse AST using esrecurse visit with custom visitor
Packages
Symbols
  • Visitor
  • visit
Created
2026-08-27T17:30:20Z

Contract

  1. visit traverses standard ESTree AST and invokes node type callbacks on visitor object
  2. Visitor instance traverses child nodes recursively when this.visitChildren is invoked
  3. Visitor custom childVisitorKeys configuration enables traversal into custom AST node properties
  4. Visitor fallback iteration strategy traverses properties of unknown node types without throwing
  5. Visitor fallback function strategy extracts custom child property keys for unknown node types
  6. Visitor throws an error on unknown node types when no fallback strategy is provided
  7. visit handles null and undefined nodes gracefully without throwing errors

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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