CodeSampleX

Sample

sync and async generator execution with gensync

sha256:f2ad7f3559b9e0001cd231479bacb25599439f845acb8a84ffaa10c612744cc2

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…
2026-08-26

Case

HOW
Goal
sync and async generator execution with gensync
Packages
Symbols
  • gensync
  • gensync.all
  • gensync.race
Environment
node 22.23.2
Created
2026-08-26T06:50:44Z

Contract

  1. gensync wraps sync and async function handlers into a unified dual-mode operation
  2. gensync wraps generator functions allowing unified sync and async execution via .sync and .async
  3. gensync function supports Node.js errback callback pattern via .errback
  4. gensync.all executes multiple gensync operations concurrently in async mode and sequentially in sync mode
  5. gensync.race resolves with the first completed operation across sync and async modes
  6. gensync.race throws GENSYNC_RACE_NONEMPTY when given an empty iterable
  7. gensync throws GENSYNC_OPTIONS_ERROR when invalid handler options are provided
  8. gensync throws GENSYNC_ERRBACK_NO_CALLBACK when .errback is invoked without a callback function
  9. gensync propagates errors thrown inside generator steps in both sync and async modes

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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