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which-typed-array

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Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

7
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

arrayTypedArraytyped arraywhichtypedInt8ArrayUint8ArrayUint8ClampedArrayInt16ArrayUint16ArrayInt32ArrayUint32ArrayFloat32ArrayFloat64ArrayES6toStringTagSymbol.toStringTag@@toStringTag

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
dependencies unvetted-dep:gopd AI (dependencies): gopd is a legitimate, widely-used utility by the same author (ljharb); stable false positive for this package ecosystem. ai

Versions (showing 7 of 7)

Version Deps Published
1.1.22 7 / 22
1.1.21 7 / 22
1.1.20 7 / 22
1.1.19 7 / 22
1.1.18 6 / 22
1.1.17 6 / 22
1.1.16 5 / 22

v1.1.22

1 finding
LOW No provenance attestation provenance

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

v1.1.21

1 finding
LOW No provenance attestation provenance

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

v1.1.19

1 finding
LOW No provenance attestation provenance

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

v1.1.18

1 finding
LOW No provenance attestation provenance

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

v1.1.17

1 finding
LOW No provenance attestation provenance

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

v1.1.16

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.