is-alphabetical is a small ESM JavaScript/TypeScript function that checks whether a given character is an ASCII alphabetical character (matching [a-z], case insensitive). It returns true for letters like “a” and “B”, and false for non-letters, and is useful when you need this check as a shared helper across multiple packages.
Project status
- The repository shows no upstream push since 2022-11-23, and the most recent packaged update appears to be from 2021-11-04 (2.0.1), so maintenance looks quiet or in maintenance mode rather than actively evolving as of 2026-09-10.
- Update cadence is irregular and sparse, with gaps of multiple years between updates (for example, 2016 to 2017, then 2018, 2019, 2020, 2021, and no observed updates in 2023-2026).
AI summary generated
Recent updates
2.0.1
Release 2.0.1 focuses on documentation updates and enabling stricter TypeScript settings. Code changes appear minimal at runtime, but the build and test toolchain (scripts and dev dependencies) was also modified.
2.0.0
Release 2.0.0 migrates the package to ESM and adds JSDoc based type support. The documented changes are small in the release notes, but the actual diff shows a more significant public API change and distribution/build changes.
BreakingFeatures1.0.4
Release 1.0.4 is described in the notes as a prose refactor. The diff shows mostly README wording/formatting updates, but it also includes version bumps for several development tooling dependencies and adds GitHub sponsorship metadata.
1.0.3
Release 1.0.3 is presented as a small documentation-focused update (more README badges, switch URLs to HTTPS, and rename the LICENSE file). The code diff shows additional changes to the build and development toolchain (devDependency updates and changes to the build scripts) plus a CI Node.js version update.
Features1.0.2
Release 1.0.2 is presented as a code-style refactor, with no stated functional changes. However, the diff shows multiple changes to development tooling, build scripts, CI configuration, and dependency versions that are not explicitly documented.
1.0.1
Release 1.0.1 is described as a documentation refactor plus removal of history.md. The actual diff shows mostly metadata and tooling changes, including CI configuration updates, significant devDependency version bumps, and documentation generation/linting configuration adjustments.
1.0.0
Release 1.0.0 was published on 2016-07-11, but the provided release notes contain no descriptive content beyond a celebratory marker. No information about new features, bug fixes, security updates, breaking changes, or migration steps is available in the supplied notes.