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systemjs

Dynamic ES module loader

26
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

joeldenningguybedford

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff obfuscated-file:dist/system-node.cjs AI (source-diff): dist/system-node.cjs is a legitimate webpack/ncc bundle of the SystemJS Node.js build. The 'obfuscation' is standard webpack boilerplate, not malicious code. ai
source-diff net-exec-file:dist/system-node.cjs AI (source-diff): SystemJS is a dynamic module loader by design — network fetching and dynamic code execution are its core functionality, not malware indicators. ai
source-diff source-size-tripled AI (source-diff): Size increase is explained by the addition of a ncc-bundled Node.js distribution artifact (system-node.cjs), a legitimate architectural change. ai
provenance publisher-changed AI (provenance): guybedford is the original author of systemjs; the transition from joeldenning back to guybedford is a legitimate maintainer change, not a compromise. ai

Versions (showing 26 of 226)

Version Deps Published
0.10.0 1 / 2
0.9.3 1 / 2
0.9.2 1 / 2
0.9.1 1 / 2
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0.6.0 1 / 1
0.5.5 1 / 0
0.5.2 1 / 0
0.5.1 1 / 0
0.5.0 1 / 0
0.4.3 1 / 0
0.4.2 1 / 0
0.4.1 1 / 0
0.4.0 1 / 0