Binary is a JavaScript library for manipulating and parsing binary data. It offers a fluent, chainable API to define data structures and extract values, making it easier to work with protocols, file formats, or any raw binary data. This package provides methods for reading integers, strings, and other data types, as well as conditional logic for parsing variable-length structures. It's useful in network programming, file processing, and systems programming tasks where bit-level control is important for data processing.