Sample
express 5.2.1: Dynamically reload or replace an Express router without leaking memory.
Verified sample for npm express 5.2.1: Dynamically reload or replace an Express router without leaking memory. The contract ran on node 22 · linux alpine/x64…
sha256:81e9e7f609040701543c29f1575655b4c1386f54cd4f25834f93cb24943f6ded
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
- Dynamically reload or replace an Express router without leaking memory.
- Packages
- Symbols
-
- app.use
- Router
- app.router
- Environment
- node
- Created
- 2026-08-17T01:50:40Z
Contract
- assert.strictEqual(app.router.stack.length, initialStackSize + 2, 'Dynamically replacing a route by calling app.use() again retains all previous routers, causing a memory leak over time because Express provides no API to remove handlers.')
- assert.strictEqual(app.unuse, undefined, 'Express provides no app.unuse() API to remove handlers.')
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs