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@sindresorhus/is

Type check values

5
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

sindresorhus

Keywords

typetypesischeckcheckingvalidatevalidationutilityutiltypeofinstanceofobjectassertassertiontestkindprimitiveverifycomparetypescripttypeguardstypes

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
typosquat typosquat.levenshtein:qs AI (typosquat): False positive: @sindresorhus/is is a well-known scoped package by Sindre Sorhus. Edit-distance comparison to 'qs' is meaningless for scoped packages. ai
typosquat typosquat.levenshtein:pg AI (typosquat): False positive: @sindresorhus/is is a well-known scoped package by Sindre Sorhus. Edit-distance comparison to 'pg' is meaningless for scoped packages. ai
provenance no-provenance AI (provenance): Sindre Sorhus is a highly trusted publisher with 174 packages; lack of provenance attestation is not a meaningful risk signal here. ai

Versions (showing 5 of 5)

Version Deps Published
8.1.0 0 / 12
8.0.0 0 / 12
7.2.0 0 / 14
7.1.1 0 / 14
4.6.0 0 / 16

v8.1.0

1 finding
INFO No provenance attestation provenance

[Accepted risk] Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v7.2.0

1 finding
INFO No provenance attestation provenance

[Accepted risk] Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v7.1.1

1 finding
INFO No provenance attestation provenance

[Accepted risk] Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v4.6.0

1 finding
INFO No provenance attestation provenance

[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.