Provides helper functions to create GeoJSON features, like points, lines, or areas on a map.

Calculates the distance from a point to the edges of a polygon or multi-polygon.

Make USB power meters usable with the Firefox Profiler

Calculates the geodesic area in square meters of one or more polygons.

A browser devtools panel for MSW, built for orval + Faker. Toggle mocked endpoints, switch success/empty/error/custom scenarios, tweak latency & status, and inspect traffic — without touching code.

Haversine formula in Javascript, in meters, nothing else

Encodings that map abstract data to visual representation.

A customizable peak meter using the web audio API

A JavaScript port of the Proj.4 cartographic projections library

Entri

calculate the physical area of a geojson geometry

Polar integration for better-auth

Physical Units for TypeScript

Open Location Codes are a way of encoding location into a form that is easier to use than latitude and longitude. Source for a website to demonstrate Open Location Codes. (https://github.com/google/open-location-code)

图可视化设计器

Type-safe TypeScript units of measure

Vite-built watch canvas (Pixi.js) for Agent Play. Publishes static files under dist/ for self-hosting or embedding beside your own API.

Render contour lines from raster elevation tiles in maplibre-gl-js

Transformations between the Web Mercator projection and Latitude Longitude coordinates

Converts a distance unit (e.g. m) to another (e.g. cm)