CodeSampleX

Sample

verify pkg:npm/source-map-support@0.5.21

sha256:ad1adc8aa939fb00a7d99afb3707f432b10ad1b4a9cacd1ca2e04f7b2271f33b

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
verify pkg:npm/source-map-support@0.5.21
Packages
Symbols
  • source-map-support.getErrorSource
  • source-map-support.install
  • source-map-support.mapSourcePosition
Created
2026-08-28T04:53:48Z

Contract

  1. source-map-support.install configures stack trace remapping and supports custom retrieveSourceMap handlers
  2. source-map-support.mapSourcePosition maps compiled file positions to original source files and lines
  3. source-map-support.mapSourcePosition preserves unmapped positions when no source map is found
  4. source-map-support.getErrorSource extracts original source line and column caret from an Error with mapped stack
  5. source-map-support.getErrorSource returns null for errors without matchable stack frames

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous