CodeSampleX

Sample

express 4.18.2: Verify that Express 4.18.2 correctly executes the 101st synchronous handler on a single route, whereas Express 4.18.1 skips it due to an off-by-one error during sync stack threshold reset.

Verified sample for npm express 4.18.2: Verify that Express 4.18.2 correctly executes the 101st synchronous handler on a single route, whereas Express 4.18.1…

sha256:f9920dfd8370108b3cf594707b376101b025aceda48d3e71dc1d0488d6e0610a

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
2
Signing keys that built it
2
Declared environment node linux x64 node node npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-17
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-18

Case

HOW
Goal
Verify that Express 4.18.2 correctly executes the 101st synchronous handler on a single route, whereas Express 4.18.1 skips it due to an off-by-one error during sync stack threshold reset.
Packages
Symbols
  • express.Route.prototype.dispatch
Environment
node
Created
2026-08-17T01:50:53Z

Contract

  1. Express 4.18.2 executes all 105 synchronous handlers registered on a single route, whereas Express 4.18.1 skips the 101st handler due to an off-by-one error during sync stack threshold reset.

Files

  • NOTES.md
  • csx.json
  • package-lock.json
  • package.json
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

csx-seed