mbloch/mapshaper

Javascript implementation of zip for nodejs with support for electron original-fs. Allows user to create or extract zip files both in memory or to/from disk

the complete solution for node.js command-line programs

Interpolate numbers, colors, strings, arrays, objects, whatever!

Sequential, diverging and categorical color schemes.

High performance (de)compression in an 8kB package

Convert character encodings in pure javascript.

A very fast static 2D index for points based on kd-tree.

Ultra-fast MessagePack implementation with extensions for records and structured cloning

The smallest and simplest JavaScript priority queue

browser-side require() the node way

simple, flexible, fun test framework

JavaScript's functional programming helper library.

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

Color spaces! RGB, HSL, Cubehelix, Lab and HCL (Lch).

convert KML and GPX to GeoJSON

An incredibly fast JavaScript library for Delaunay triangulation of 2D points

Fast static spatial index for rectangles

A super-simple-small keyval store built on top of IndexedDB

Now stdin and stdout are files.

Make synchronous web requests

A JavaScript port of the Proj.4 cartographic projections library

csv test data for writing robust csv parsers

quote and parse shell commands