formatwhere
FormatWhere is a lightweight, open‑source library designed to simplify conditional data formatting across a variety of programming environments. Initially released in 2018 by a community of developers focusing on data visualization and reporting, the project aims to provide a declarative syntax for applying format rules based on the values and context of data fields. The library supports multiple languages, including JavaScript, Python, and Java, and can be integrated into web applications, server‑side scripts, and desktop software.
The core functionality of FormatWhere revolves around the concept of “format clauses”, which consist of a condition
Key features include an extensible plugin architecture, allowing developers to create custom formatters for specialized output
Since its inception, FormatWhere has been adopted by several analytics platforms, reporting tools, and educational software