ccp-nc/crystcif-parse

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

simple, flexible, fun test framework

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with different data types like numbers, big numbers, complex numbers, fractions, units, and matrices.

A small library for working with element data and building compounds.

Extends chai with assertions that allow for floating point rounding errors