Sample
verify isStream detects Node.js stream instances and differentiate readable writable duplex and transform streams
sha256:9abcd1c6c50d4dfe47b76aa135f65821263e8e0ba491c84fd005f2ba7a9d12ea
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
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
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… |
2026-08-23 |
Case
HOW- Goal
- verify isStream detects Node.js stream instances and differentiate readable writable duplex and transform streams
- Packages
- Symbols
-
- isStream
- isStream.duplex
- isStream.readable
- isStream.transform
- isStream.writable
- Environment
- node 22.23.2
- Created
- 2026-08-23T17:16:52Z
Contract
- isStream returns true for Node.js Stream instances and objects with a pipe method, and false for primitives and plain objects
- isStream.readable returns true for readable streams including Readable, Duplex, and Transform, and false for purely Writable streams or non-streams
- isStream.writable returns true for writable streams including Writable, Duplex, and Transform, and false for purely Readable streams or non-streams
- isStream.duplex returns true for streams that are both readable and writable such as Duplex and Transform, and false for purely Readable or Writable streams
- isStream.transform returns true for Transform and PassThrough streams, and false for standard Duplex, Readable, or Writable streams
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.js
Origin Seeder
anonymous