set.prototype.issubsetof
1
Versions
—
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
javascriptecmascriptSetisSubsetOfSet.prototype.isSubsetOfsubsetpolyfillshimes-shim APIes-shims
Accepted risks
Findings the reviewer chose to accept rather than block on.
| Source | Rule | Reason | Accepted by | When |
|---|---|---|---|---|
| provenance | no-provenance | AI (provenance): ljharb's packages consistently lack Sigstore provenance; not a risk signal for this publisher. | ai | |
| dependencies | unvetted-dep:es-set | AI (dependencies): es-set is an es-shims package by the same trusted author; stable false positive for this package. | ai |
Versions (showing 1 of 1)
| Version | Deps | Published |
|---|---|---|
| 1.1.4 | 7 / 21 |
v1.1.4
1 finding
LOW
No provenance attestation
provenance
Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.