is-nan
ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.
1
Versions
MIT
License
No
Install Scripts
Missing
Provenance
Supply chain provenance
Status for the latest visible version.
No SLSA provenance
npm registry signatures
gitHead linked
Without SLSA provenance there is no cryptographic link between this tarball and the public source — the axios compromise (March 2026) relied on exactly this gap.
Maintainers
ljharb
Keywords
isNaNnot a numbernumberisNaNES6ES2015shimpolyfilles-shim API
Accepted risks
Findings the reviewer chose to accept rather than block on.
| Source | Rule | Reason | Accepted by | When |
|---|---|---|---|---|
| dependencies | unvetted-dep:define-properties | AI (dependencies): define-properties is a well-known es-shims utility package; its use here is expected and stable across all versions of is-nan. | ai | |
| provenance | no-provenance | AI (provenance): ljharb's packages predate Sigstore provenance adoption; absence of attestation is not a risk signal for this publisher. | ai |
Versions (showing 1 of 1)
| Version | Deps | Published |
|---|---|---|
| 1.3.2 | 2 / 9 |