Jsep
Jsep is a lightweight JavaScript library for parsing and evaluating mathematical and logical expressions from strings. It provides a simple API to convert expression strings into abstract syntax trees (ASTs) that can be evaluated or manipulated programmatically. It is commonly used in applications like calculators, formula editors, or configuration systems where dynamic expression evaluation is needed.
Developers should use Jsep when they need to safely parse and evaluate user-provided expressions without using eval(), which can pose security risks. It is ideal for building interactive tools like data dashboards, spreadsheet-like applications, or rule engines that require dynamic formula processing. Its small size and ease of integration make it suitable for both browser and Node.js environments.