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This is the Firebase Cloud Messaging component of the Firebase JS SDK.

51
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

firebase-opsfeiyang.chengoogle-wombotchholland

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff obfuscated-file:coverage/browser/HeadlessChrome 65.0.3325 (Linux 0.0.0)/prettify.js AI (source-diff): This is the well-known Google Code Prettify syntax highlighter in minified form, bundled as a Karma test coverage report artifact. Benign and stable for this Firebase SDK package. ai
provenance no-provenance AI (provenance): google-wombot/Firebase packages do not currently publish Sigstore provenance; this is consistent across all Firebase SDK releases and not a meaningful risk signal. ai
dependencies unvetted-dep:@firebase/installations AI (dependencies): @firebase/installations is a core Firebase SDK package from the same Google org; unvetted status is a pipeline gap, not a real risk for this well-established ecosystem. ai
dependencies unvetted-dep:@firebase/util AI (dependencies): @firebase/util is a core Firebase SDK utility package from the same Google org; unvetted status is a pipeline gap, not a real risk for this well-established ecosystem. ai
publish-pattern new-deps-added AI (publish-pattern): tslib is Microsoft's TypeScript runtime helpers library — a standard, trusted dependency for TypeScript-compiled packages. No risk. ai
provenance publisher-changed AI (provenance): Publisher change from jshcrowthe to feiyang.chen in 2018 reflects a legitimate Firebase/Google team transition; both are long-standing Firebase team members. ai
maintainer-change maintainer-added AI (maintainer-change): feiyang.chen and hiranya911 are established Firebase/Google team members; maintainer additions reflect legitimate internal team changes. ai
phantom-deps phantom-dep:tslib AI (phantom-deps): tslib is a standard TypeScript runtime helper; its use as an implicit dependency is expected in compiled TypeScript Firebase SDK packages. ai
bogus-package bogus-package AI (bogus-package): Short README and missing keywords are typical of monorepo sub-bundle packages (messaging-sw); not indicative of spam for an official Google Firebase SDK. ai
phantom-deps phantom-dep:@firebase/messaging-interop-types AI (phantom-deps): Same-org type-only package used as an interop types declaration; expected pattern for Firebase monorepo sub-packages. ai

Versions (showing 51 of 375)

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0.12.26 6 / 6
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v0.13.0

1 finding
INFO No provenance attestation provenance

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

v0.12.26

1 finding
INFO No provenance attestation provenance

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