is-number
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
long
A Long class for representing a 64-bit two's-complement integer value.
mathjs
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 dif
rbush
High-performance 2D spatial index for rectangles (based on R*-tree with bulk loading and bulk insertion algorithms)
