Anže Pečar 0b234b3256 perf(javascript): cache npm registry license lookups across runs (#5297)
When javascript.search-remote-licenses is enabled, the lock catalogers
query registry.npmjs.org once per package occurrence, on every run, with
nothing in front of the network call. The same name@version is fetched
again for every lockfile that mentions it, and again on the next scan.

This adds a javascriptLicenseResolver that resolves licenses through
syft's on-disk cache, keyed on "<name>/<version>" and namespaced as
javascript/v1, and routes the package-lock v1, package-lock v2, pnpm,
yarn and bun package constructors through it, leaving
getLicenseFromNpmRegistry itself unchanged. Failed lookups are not
cached: a transient registry failure or a name that 404s must not be able
to blank out licenses for the lifetime of the cache entry, since a
missing license silently weakens downstream license policy checks. A
successful lookup that returns an empty license is a real answer and is
still cached.

Signed-off-by: Anže Pečar <anze@pecar.me>
2026-09-15 17:32:28 -04:00
2025-12-17 18:00:38 +00:00
…
2026-05-18 11:59:55 -04:00
2024-10-11 05:17:01 -04:00

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Syft

A CLI tool and Go library for generating a Software Bill of Materials (SBOM) from container images and filesystems. Exceptional for vulnerability detection when used with a scanner like Grype.

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syft-demo

Features

Tip

New to Syft? Check out the Getting Started guide for a walkthrough!

Installation

The quickest way to get up and going:

curl -sSfL https://get.anchore.io/syft | sudo sh -s -- -b /usr/local/bin

Tip

See Installation docs for more ways to get Syft, including Homebrew, Docker, Scoop, Chocolatey, Nix, and more!

The basics

See the packages within a container image or directory:

# container image
syft alpine:latest

# directory
syft ./my-project

To get an SBOM, specify one or more output formats:

# SBOM to stdout
syft <image> -o cyclonedx-json

# Multiple SBOMs to files
syft <image> -o spdx-json=./spdx.json -o cyclonedx-json=./cdx.json

Tip

Check out the Getting Started guide to explore all of the capabilities and features.

Want to know all of the ins-and-outs of Syft? Check out the CLI docs, configuration docs, and JSON schema.

Contributing

We encourage users to help make these tools better by submitting issues when you find a bug or want a new feature. Check out our contributing overview and developer-specific documentation if you are interested in providing code contributions.

Syft development is sponsored by Anchore, and is released under the Apache-2.0 License. The Syft logo by Anchore is licensed under CC BY 4.0

For commercial support options with Syft or Grype, please contact Anchore.

Come talk to us!

The Syft Team holds regular community meetings online. All are welcome to join to bring topics for discussion.

S
Description
A CLI tool and Go library for generating a Software Bill of Materials (SBOM) from container images and filesystems.
Readme Apache-2.0
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