Sample
dayjs 1.11.19: Parsing localized date strings with dayjs timezone plugin requires extending utc first and calling dayjs.tz instead of dayjs().tz to avoid host timezone pollution
Verified sample for npm dayjs 1.11.19: Parsing localized date strings with dayjs timezone plugin requires extending utc first and calling dayjs.tz instead of…
sha256:25d71a2e3c364d711aa8301232a66e425396851026004a5e211559065f642c12
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 |
2026-08-16 |
| 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
- Parsing localized date strings with dayjs timezone plugin requires extending utc first and calling dayjs.tz instead of dayjs().tz to avoid host timezone pollution
- Packages
- Symbols
-
- dayjs.extend
- dayjs.utc
- dayjs.tz
- Environment
- node
- Created
- 2026-08-16T06:20:32Z
Contract
- assert dayjs.tz throws TypeError unless dayjs.extend(utc) is registered alongside timezone plugin
- assert dayjs.tz(str, tz) parses directly into the target timezone without host timezone pollution
- assert dayjs(str).tz(tz) silently corrupts parsed timestamps by using the host timezone before converting
- assert dayjs.utc(iso).tz(tz, true) preserves clock digits in the target timezone via keepLocalTime
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/index.mjs
- test/contract.mjs