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sw-toolbox

Service Worker Toolbox provides some simple helpers for use in creating your own service workers.

16
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

addyosmanigauntfacejeffposnickwibblymat

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff obfuscated-file:sw-toolbox.js AI (source-diff): sw-toolbox.js is a documented browserify+uglify build artifact (listed in package.json files array). The minified bundle with Apache 2.0 header is the expected distributable output for this Google Chrome team package. ai
source-diff obfuscated-file:docs/sw-toolbox.js AI (source-diff): Copy of the build bundle placed in docs/ by the build-docs script. Same legitimate minified artifact as build/sw-toolbox.js. ai
provenance no-provenance AI (provenance): Package predates Sigstore provenance by years; absence of attestation is expected and not a risk signal for this established Google Chrome library. ai
source-diff obfuscated-file:build/sw-toolbox.js AI (source-diff): This is a standard browserify/minifyify bundle with Apache 2.0 header. sw-toolbox ships minified build artifacts by design; this is not malicious obfuscation. ai
provenance publisher-changed AI (provenance): Legitimate Google Chrome team maintainer transition from wibblymat to jeffposnick; jeffposnick is a well-established publisher with a strong track record. ai
source-diff obfuscated-file:docs/jekyll-theme/third_party/prism/prism.js AI (source-diff): Prism.js is a well-known syntax highlighting library; this is a standard minified third-party doc asset under docs/, not runtime code. ai
maintainer-change maintainer-added AI (maintainer-change): addyosmani, gauntface, and jeffposnick are all well-known Google Chrome team members; this is a legitimate team transition. ai

Versions (showing 16 of 16)

Version Deps Published
3.6.0 2 / 24
3.5.1 2 / 24
3.5.0 2 / 24
3.4.0 2 / 27
3.3.0 2 / 25
3.2.1 2 / 22
3.2.0 2 / 22
3.1.1 2 / 15
3.1.0 2 / 15
3.0.1 2 / 12
3.0.0 2 / 12
2.1.0 2 / 10
2.0.4 2 / 8
2.0.3 2 / 7
2.0.2 2 / 7
2.0.0 2 / 7

v3.6.0

1 finding
LOW No provenance attestation provenance

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

v3.5.1

2 findings
HIGH New obfuscated file: sw-toolbox.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.

INFO No provenance attestation provenance

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

v3.5.0

1 finding
LOW No provenance attestation provenance

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

v3.4.0

1 finding
INFO No provenance attestation provenance

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

v3.3.0

3 findings
HIGH Publisher changed: wibblymat → jeffposnick (on 2016-09-21) provenance

This version was published by a different npm account than previous versions on 2016-09-21. This could indicate a legitimate maintainer transition or an account compromise.

HIGH New obfuscated file: docs/jekyll-theme/third_party/prism/prism.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.

v3.2.1

1 finding
INFO No provenance attestation provenance

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

v3.2.0

3 findings
HIGH New obfuscated file: build/sw-toolbox.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.

HIGH New obfuscated file: docs/sw-toolbox.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.

v3.1.1

1 finding
INFO No provenance attestation provenance

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

v3.1.0

1 finding
INFO No provenance attestation provenance

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

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

1 finding
LOW No provenance attestation provenance

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

v2.1.0

1 finding
INFO No provenance attestation provenance

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

v2.0.4

1 finding
INFO No provenance attestation provenance

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

v2.0.3

1 finding
INFO No provenance attestation provenance

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

v2.0.2

1 finding
INFO No provenance attestation provenance

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

v2.0.0

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.