Sample
puppeteer 24.4.0: Use Puppeteer's built-in device and network presets with their actual export locations, descriptor fields, and units.
Verified sample for npm puppeteer 24.4.0: Use Puppeteer's built-in device and network presets with their actual export locations, descriptor fields, and…
sha256:6f26f00d45b0a1407fa5a3007d28d57e574a471310f9a78784707aac8828e0b4
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 javascript 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
- Use Puppeteer's built-in device and network presets with their actual export locations, descriptor fields, and units.
- Packages
- Symbols
-
- puppeteer.KnownDevices
- puppeteer.PredefinedNetworkConditions
- Environment
- node
- Created
- 2026-08-17T03:53:13Z
Contract
- Puppeteer 24.4.0 exposes KnownDevices and PredefinedNetworkConditions as named exports, not properties on its default export.
- KnownDevices has separate iPhone 15 portrait and landscape descriptors whose viewport uses isMobile, hasTouch, and isLandscape.
- PredefinedNetworkConditions['Fast 3G'] records download/upload throughput in bytes per second and latency in milliseconds.
- Copying a network preset before customization leaves the process-wide preset unchanged.
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs