PARSE and STRINGIFY for CSV strings. It's like JSON object but for CSV. It can also work row by row. And, if can parse strings, it can be use to parse files or streams too.
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.