Sample
express 5.2.1: Make a rejected async route handler reach the error middleware instead of hanging the request
Verified sample for npm express 5.2.1: Make a rejected async route handler reach the error middleware instead of hanging the request. The contract ran on…
sha256:4fe235efd38eb57257c66e22258e516ca4464e981875b5b9591c7007c0f4a12a
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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 22 linux x64 node 22 npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-13 |
| 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 |
Case
FIX- Goal
- Make a rejected async route handler reach the error middleware instead of hanging the request
- Packages
- Symbols
-
- express
- app.get
- app.use
- Environment
- node 22
- Created
- 2026-08-13T15:20:09Z
Contract
- register an async route handler that rejects
- register an error middleware with the four-argument signature
- assert the request completes with the error response instead of hanging
- assert the error message reached the middleware
Files
- csx.json
- package-lock.json
- package.json
- src/index.mjs
- test/contract.mjs