CodeSampleX

Sample

combine writable and readable streams into a duplex stream

sha256:f44aa117f492da0969fb29831feb2d5504f61174c87389fdf7ae14aa10d43c8f

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
combine writable and readable streams into a duplex stream
Packages
Symbols
  • duplexer2
Created
2026-08-27T20:20:00Z

Contract

  1. duplexer2(writable, readable) returns a Duplex stream combining writable and readable streams
  2. writing data to duplex stream forwards chunks to the underlying writable stream
  3. reading data from duplex stream pulls chunks from the underlying readable stream
  4. duplexer2 bubbles error events from writable stream to duplex stream by default
  5. duplexer2 bubbles error events from readable stream to duplex stream by default
  6. duplexer2 suppresses error bubbling when bubbleErrors option is false
  7. duplexer2 supports stream options such as objectMode

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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