systemjs-builder
SystemJS Build Tool
Supply chain provenance
Status for the latest visible version.
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
Accepted risks
Findings the reviewer chose to accept rather than block on.
| Source | Rule | Reason | Accepted by | When |
|---|---|---|---|---|
| npm-metadata | suspicious-initial-version | AI (npm-metadata): 0.0.0 is the legitimate initial release of systemjs-builder by guybedford, a well-established maintainer. Package is 12 years old with 139 versions; not a throwaway. | ai | |
| npm-metadata | url-dep:traceur | AI (npm-metadata): Early 2014-era release; git URL for traceur was common practice before consistent npm publishing. No security risk for this historical v0.0.1 artifact from a trusted publisher. | ai | |
| provenance | no-provenance | AI (provenance): Package predates npm provenance attestation by many years; absence is expected and not a risk signal for this package. | ai | |
| source-diff | obfuscated-file:test/fixtures/test-tree/register.js | AI (source-diff): Test fixture containing Babel-transpiled ES6 code (System.register format). Long lines are from transpiler output, not malicious obfuscation. Stable false positive for this build tool's test suite. | ai | |
| semgrep | semgrep:eval-usage | AI (semgrep): eval() in lib/builder.js is part of SystemJS's documented module evaluation pipeline — evaluating module source code during builds, not arbitrary external input. Stable pattern across all versions of this build tool. | ai | |
| semgrep | semgrep:dynamic-require | AI (semgrep): Dynamic require in compile.js is a standard plugin-dispatch pattern for a multi-format build tool; compilerMap is an internal lookup table, not user-controlled input. | ai | |
| semgrep | semgrep:new-function-constructor | AI (semgrep): new Function() in output.js is a documented workaround to access Terser's unexported SourceMap internals; not arbitrary user-input execution. | ai |
Versions (showing 38 of 138)
| Version | Deps | Published |
|---|---|---|
| 0.6.0 | 7 / 2 | |
| 0.5.3 | 6 / 2 | |
| 0.5.2 | 6 / 1 | |
| 0.5.1 | 6 / 1 | |
| 0.5.0 | 6 / 1 | |
| 0.4.5 | 6 / 1 | |
| 0.4.4 | 6 / 1 | |
| 0.4.3 | 6 / 1 | |
| 0.4.1 | 6 / 1 | |
| 0.4.0 | 6 / 1 | |
| 0.3.1 | 4 / 1 | |
| 0.3.0 | 4 / 1 | |
| 0.2.10 | 3 / 1 | |
| 0.2.9 | 3 / 1 | |
| 0.2.8 | 3 / 1 | |
| 0.2.7 | 3 / 1 | |
| 0.2.6 | 3 / 1 | |
| 0.2.5 | 3 / 1 | |
| 0.2.4 | 3 / 1 | |
| 0.2.3 | 3 / 1 | |
| 0.2.2 | 3 / 1 | |
| 0.2.1 | 3 / 1 | |
| 0.2.0 | 3 / 1 | |
| 0.1.6 | 3 / 1 | |
| 0.1.5 | 3 / 1 | |
| 0.1.4 | 3 / 1 | |
| 0.1.3 | 3 / 1 | |
| 0.1.2 | 3 / 1 | |
| 0.1.1 | 3 / 1 | |
| 0.1.0 | 3 / 1 | |
| 0.0.7 | 3 / 1 | |
| 0.0.6 | 3 / 1 | |
| 0.0.5 | 3 / 1 | |
| 0.0.4 | 3 / 1 | |
| 0.0.3 | 3 / 1 | |
| 0.0.2 | 3 / 1 | |
| 0.0.1 | 3 / 1 | |
| 0.0.0 | 3 / 1 |
v0.6.0
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.5.3
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.5.2
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.5.1
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.5.0
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.4.5
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.4.4
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.4.3
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.4.1
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.4.0
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.3.1
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.3.0
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.10
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.9
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.8
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.7
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.6
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.5
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.4
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.3
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.2
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.1
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.2.0
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.6
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.5
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.4
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.3
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.2
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.1
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.1.0
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.7
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.6
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.5
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.4
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.3
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.2
1 findingPackage was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.1
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v0.0.0
1 finding[Accepted risk] Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.