This is a small JavaScript utility that checks whether a given value is a JS Map. It’s designed to work across realms and iframes, which makes it useful when validating Map values in different execution contexts.
Project status
- The upstream repository shows a recent push on 2025-12-30, suggesting the project is still being maintained, but the provided package update history is sparse (latest shown is v2.0.3 on 2024-03-08).
- Apparent update cadence is low, with long gaps between published updates (v2.0.1 in 2019, v2.0.2 in 2020, v2.0.3 in 2024), so changes do not appear frequent.
AI summary generated Today
Recent updates
v2.0.3
3/8/2024No release notes were provided for v2.0.3. The code diff shows runtime logic in index.js is effectively unchanged, while the release primarily adds TypeScript typings and updates build/publishing configuration (scripts, npmignore generation, and metadata like sideEffects).
Featuresv2.0.2
12/14/2020This release (v2.0.2) has no publisher-provided release notes. The actual diff is almost entirely build and development infrastructure, including new GitHub Actions workflows, updated npm scripts for testing with coverage, and a set of devDependency version bumps.
v2.0.1
12/17/2019Release v2.0.1 was published on 2019-12-17, but no release notes were provided by the publisher. As a result, there is no documented information about new features, bug fixes, breaking changes, security updates, or migration steps in the available data.