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is-immutable-type

npm Repository Homepage

Check the immutability of TypeScript types

2
Versions
BSD-3-Clause
License
No
Install Scripts
Verified
Provenance

Supply chain provenance

Status for the latest visible version.

SLSA provenance attestation npm registry signatures gitHead linked

Maintainers

rebeccastevens

Keywords

readonlyimmutabletypetypescript

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
provenance publisher-changed AI (provenance): Transition from personal account to GitHub Actions CI/CD publishing; SLSA attestation confirms legitimate provenance. ai
publish-pattern dormant-publish AI (publish-pattern): Major version bump after dormancy with SLSA provenance; consistent with maintainer's repo and identity. ai
provenance no-provenance AI (provenance): Established package with clear GitHub repo; lack of provenance is common and not a risk signal here. ai

Versions (showing 2 of 2)

Version Deps Published
5.0.2 3 / 56
5.0.1 3 / 61

v5.0.2

2 findings
HIGH Publisher changed: rebeccastevens → GitHub Actions (on 2026-05-21) provenance

This version was published by a different npm account than previous versions on 2026-05-21. This could indicate a legitimate maintainer transition or an account compromise.

INFO Has SLSA provenance attestation provenance

Published via CI/CD with Sigstore attestation (predicate: https://slsa.dev/provenance/v1). This is the strongest supply chain integrity signal.