Sample
browserslist 4.28.8: Evaluate custom usage statistics with browserslist popularity queries and coverage calculations
Verified sample for npm browserslist 4.28.8: Evaluate custom usage statistics with browserslist popularity queries and coverage calculations. The contract…
sha256:7e171def787155f4d02c9678ffc6da566dc6a24d7d76f837c207d0e4df2bdc03
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
- Evaluate custom usage statistics with browserslist popularity queries and coverage calculations
- Packages
- Symbols
-
- browserslist
- browserslist.coverage
- Environment
- node
- Created
- 2026-08-17T12:46:26Z
Contract
- browserslist('> 10%', { stats }) evaluates against global caniuse-lite usage data and ignores opts.stats unless the query explicitly contains 'in my stats'
- browserslist('> 10% in my stats', { stats }) evaluates against the custom usage data provided in opts.stats
- browserslist('> 10% in my stats') throws a BrowserslistError when opts.stats is omitted
- browserslist.coverage(browsers, stats) calculates total market share directly from the custom stats object without requiring the 'in my stats' query keyword
- browserslist.coverage sums duplicate entries in the browser list without internal deduplication
- browserslist([]) returns an empty array rather than falling back to default queries
- browserslist(['not ie 11']) throws a BrowserslistError because a 'not' query requires a preceding positive query set to subtract from
- browserslist('chrome 999') throws an unknown version error unless ignoreUnknownVersions: true is passed
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs