geojson-js-utils

The library is designed as a pure JavaScript utility with no external dependencies, making it easy to integrate without bloating projects, as emphasized in its focus on lightweight spatial calculations.

It provides core operations like point-in-polygon testing and Haversine distance calculation, with clear examples in the README for tasks such as filtering by radius or detecting line intersections.

Can be loaded directly in browsers or via npm with simple require statements, as shown in the usage examples, lowering the barrier to entry for developers.

The MIT license allows unrestricted use in both open-source and commercial projects, providing legal flexibility without licensing concerns.