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web-vitals

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Easily measure performance metrics in JavaScript

13
Versions
Apache-2.0
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

philipwaltongoogle-wombottunetheweb

Keywords

cruxperformancemetricsCore Web VitalsCLSFCPINPLCPTTFB

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff obfuscated-file:dist/web-vitals.attribution.js AI (source-diff): Standard rollup+terser minified build output for this performance metrics library; not obfuscation. ai
source-diff large-new-source-files AI (source-diff): Diff baseline is v2.1.4; package is now at v4.x with expected growth in source files across major versions. ai
source-diff source-size-tripled AI (source-diff): Size increase reflects two major versions of feature additions (INP, attribution, modular exports). ai

Versions (showing 13 of 13)

Version Deps Published
5.3.0 0 / 20
5.2.0 0 / 20
5.0.3 0 / 26
4.2.4 0 / 26
4.2.3 0 / 26
4.2.2 0 / 26
4.2.1 0 / 26
4.2.0 0 / 26
4.1.1 0 / 26
4.1.0 0 / 26
4.0.1 0 / 26
4.0.0 0 / 26
2.1.4 0 / 24

v5.3.0

1 finding
LOW No provenance attestation provenance

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

v5.0.3

3 findings
HIGH Publisher changed: philipwalton → tunetheweb (on 2025-06-11) provenance

This version was published by a different npm account than previous versions on 2025-06-11. This could indicate a legitimate maintainer transition or an account compromise.

HIGH New obfuscated file: dist/web-vitals.attribution.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.

v4.2.4

2 findings
HIGH New obfuscated file: dist/web-vitals.attribution.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.

v4.2.3

1 finding
LOW No provenance attestation provenance

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

v4.2.2

1 finding
LOW No provenance attestation provenance

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

v4.2.1

1 finding
LOW No provenance attestation provenance

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

v4.2.0

1 finding
LOW No provenance attestation provenance

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

v4.1.1

1 finding
LOW No provenance attestation provenance

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

v4.1.0

1 finding
LOW No provenance attestation provenance

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

v4.0.1

1 finding
LOW No provenance attestation provenance

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

v4.0.0

1 finding
LOW No provenance attestation provenance

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