CodeSampleX

Sample

verify chromium-bidi.Exception in pkg:npm/chromium-bidi@2.1.2

sha256:4abb250bc42aa0a94a8a0b773f8a1398c6b344e57da61eccf3398fc26301351d

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
verify chromium-bidi.Exception in pkg:npm/chromium-bidi@2.1.2
Packages
Symbols
  • chromium-bidi.Exception
Created
2026-08-27T10:54:45Z

Contract

  1. Exception constructor sets error code, message and optional stacktrace
  2. Exception subclasses inherit from Exception with predefined error names
  3. Exception.toErrorResponse formats standard BiDi error payload with stacktrace field
  4. NoSuchElementException.toErrorResponse formats error response with no such element code
  5. NoSuchScriptException.toErrorResponse formats error response with undefined stacktrace
  6. Protocol parser throws InvalidArgumentException inheriting from Exception on invalid input

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous