CodeSampleX

Sample

deduplicate concurrent async operations by key

sha256:7801c474200bf45a8f00b250c319446f81371868fb9a5a15f3a4237e2c644085

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
deduplicate concurrent async operations by key
Packages
Symbols
  • inflight
Created
2026-08-28T03:35:54Z

Contract

  1. inflight(key, cb) returns a completion callback function on first call for a key and null for concurrent calls with the same key
  2. inflight completion callback notifies all registered callbacks for that key with the passed arguments
  3. inflight cleans up key state after completion, allowing subsequent calls for the same key to run again
  4. concurrent calls with distinct keys run and resolve independently

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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