CodeSampleX

Sample

implement TextSourceCode for custom AST traversal with getLoc and getRange

sha256:1e63bf81376698031072152eed04a0c53c8dbc064b14c0123ca8e1c475cb5670

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…
2026-08-28

Case

HOW
Goal
implement TextSourceCode for custom AST traversal with getLoc and getRange
Packages
Symbols
  • @eslint/core.SourceCodeBase
  • @eslint/core.TextSourceCode
Created
2026-08-28T05:46:50Z

Contract

  1. exports ESM and CJS type declarations for TextSourceCode and SourceCodeBase interfaces
  2. implements TextSourceCode and SourceCodeBase interface properties: text, ast, visitorKeys, getLoc, getRange, and traverse
  3. computes source location with 1-indexed line and 0-indexed column from character offsets via getLoc
  4. derives start and end character offset tuples via getRange from node locations
  5. traverse generator yields VisitTraversalStep items with enter (phase 1) and exit (phase 2) order
  6. supports language options lifecycle, disable directives, and finalization on TextSourceCode instance

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous