is-proto-prop MIT 5 versions

is-proto-prop

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Does a JS type's prototype have a property

Versions

MIT

License

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

dustinspecker

Keywords

jsjavascriptprotoproperties

Accepted risks

Findings the reviewer chose to accept rather than block on.

Source	Rule	Reason	Accepted by	When
source-diff	obfuscated-file:coverage/lcov-report/prettify.js	AI (source-diff): Standard Istanbul/c8 lcov prettify.js (Google code-prettify). Coverage report artifact accidentally published, not malicious.	ai	2026/04/23

Versions (showing 5 of 5)

Version	Deps	Published
3.0.1	2 / 5	2024-05-23
3.0.0	2 / 5	2024-05-23
2.0.0	2 / 16	2018-12-23
1.0.1	2 / 16	2018-03-01
1.0.0	2 / 19	2015-11-01

v3.0.1

1 finding

LOW No provenance attestation provenance

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

v3.0.0

2 findings

HIGH New obfuscated file: coverage/lcov-report/prettify.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

LOW No provenance attestation provenance

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

v2.0.0

1 finding

LOW No provenance attestation provenance

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