Underscore is a JavaScript utility library providing a suite of functional programming and data manipulation helpers. It serves as a framework for transforming data collections, composing functions, managing objects, and performing precise data type validation without modifying core language prototypes.
The project includes a functional programming toolkit designed to control function execution timing and behavior through techniques such as debouncing, throttling, and partial application. It also provides a dedicated object manipulation utility for cloning, merging, picking, and omitting properties.
The library covers broad capability areas including collection iteration, search, and aggregation. It further provides tools for object structure transformation and a validation system to determine if values are arrays, functions, dates, or other specific types.
The suite also includes capabilities for dynamic template generation to handle conditional logic and repeated sections within strings.
