This is a small JavaScript utility that checks whether a value is a JS Set (using cross-realm or iframe-safe detection). It is useful for validating inputs and distinguishing Sets from other collection types like Map, WeakSet, and WeakMap.
Project status
- The repository shows an upstream push on 2026-01-13, which suggests the project is still active, but the publicly summarized package updates are infrequent (no recent functional changes are evidenced in the provided update history).
- Apparent update cadence is low, with published updates roughly every few years (v2.0.1 in 2019, v2.0.2 in 2020, v2.0.3 in 2024), so it appears to be in a maintenance-style rhythm rather than frequent iteration.
AI summary generated Today
Recent updates
v2.0.3
3/8/2024Release v2.0.3 appears to be primarily a tooling and type-definition update rather than a functional change to the isSet implementation. The package now ships TypeScript typings (index.d.ts) and adds metadata/build script updates in package.json and tsconfig/type-check tooling.
Featuresv2.0.2
12/13/2020This release (v2.0.2) primarily updates repository and CI/test infrastructure and refreshes development dependencies. The provided publisher release notes are empty, so the changes shown in the diff are effectively undocumented from the perspective of consumers and maintainers.
Securityv2.0.1
12/17/2019Release v2.0.1 was published on 2019-12-17. No release notes or change log details were provided by the publisher, so the developer-impacting changes in this version cannot be determined from the available information.
v2.0.0
11/12/2019Release v2.0.0 was published on 2019-11-12, but the publisher did not provide any release notes in the supplied data. As a result, there is no documented information available here to assess new features, breaking changes, bug fixes, security updates, or migration requirements.
v1.0.0
2/18/2015This release is tagged v1.0.0, but no release notes or change log details were provided by the publisher. As a result, there is no information available here to determine new features, breaking changes, bug fixes, security updates, or migration steps.