OpenStreetMap API for JavaScript/TypeScript

The `osm-api` package provides a robust JavaScript/TypeScript wrapper for interacting with the OpenStreetMap API, designed for both Node.js (requiring Node.js >=18) and browser environments. Currently stable at version 4.0.0 (last published February 2026), the library facilitates common OSM operations such as fetching map features, managing changesets, user data, messaging, and notes. It automatically converts OSM's XML responses into JSON format, simplifying data handling for developers. A key differentiator is its use of OAuth 2 for authentication, enhancing security by avoiding the direct exposure of OAuth `client_secret`s. The library is lightweight (24 kB gzipped) and offers a simpler API and TypeScript support compared to older alternatives like `osm-request`. While a specific fixed release cadence is not explicitly stated, updates are released to address critical changes, such as the security patches to OSM's authentication flow, requiring timely library updates (e.g., v3.0.0 for a specific popup mode authentication fix).