es-module-lexer
Lexes ES modules returning their import/export metadata
2
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
guybedford
Accepted risks
Findings the reviewer chose to accept rather than block on.
| Source | Rule | Reason | Accepted by | When |
|---|---|---|---|---|
| source-diff | encoded-string-file:dist/lexer.cjs | AI (source-diff): Base64-encoded WASM binary embedded in dist output; this is the documented architecture of es-module-lexer across all versions. | ai | |
| source-diff | encoded-string-file:dist/lexer.js | AI (source-diff): Base64-encoded WASM binary embedded in dist output; this is the documented architecture of es-module-lexer across all versions. | ai |
v2.1.0
3 findings
HIGH
Long encoded string in modified file: dist/lexer.cjs
source-diff
Modified file contains 1 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.
HIGH
Long encoded string in modified file: dist/lexer.js
source-diff
Modified file contains 1 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.
LOW
No provenance attestation
provenance
Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.