Sample
core-js 3.49.0: Demonstrate that `core-js` now rejects invalid `Iterator.range` arguments instead of silently accepting them.
Verified sample for npm core-js 3.49.0: Demonstrate that `core-js` now rejects invalid `Iterator.range` arguments instead of silently accepting them. The…
sha256:4e81896c990fad1d791ae670b07599a0959713e40553090289cca7fb0943fe99
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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 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
- Demonstrate that `core-js` now rejects invalid `Iterator.range` arguments instead of silently accepting them.
- Packages
- Symbols
-
- Iterator.range
- Environment
- node
- Created
- 2026-08-17T01:49:33Z
Contract
- Calling `Iterator.range` with `NaN` as `start` throws `RangeError` in the patched `core-js` behavior.
- assert.throws(() => Iterator.range(NaN, 10), { name: 'RangeError' })
- assert.throws(() => Iterator.range(1, NaN), { name: 'RangeError' })
- assert.throws(() => Iterator.range(1, 10, NaN), { name: 'RangeError' })
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs