Head-to-Head: ts-belt vs Underscore Analysis


v3.13.1(over 1 year ago)

This package was last published over a year ago. It may not be actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 0Monthly npm downloads

@mobily/ts-belt is a TypeScript utility library that provides a collection of helper functions and types to enhance your TypeScript development experience. It offers a wide range of utilities for working with arrays, objects, strings, and more. With @mobily/ts-belt, you can easily perform common tasks like deep cloning objects, merging arrays, filtering and mapping data, and validating input.

Alternatives: lodash, ramda, ts-utils

Tags: typescriptutilitylibraryhelpertype-safe


v1.13.6(about 1 year ago)

This package was last published over a year ago. It may not be actively maintained.Types definitions are provided via a separate npm package: @types/underscoreNumber of direct dependencies: 0Monthly npm downloads

Underscore is a popular utility library for JavaScript, providing a variety of useful functions for manipulating and working with arrays, objects, and functions. It also includes utility functions for handling iterators, composition, and functional programming concepts such as map, reduce, and filter. Its functions provide a cleaner syntax for common operations and help avoid bugs and reduce the amount of boilerplate code needed.

Alternatives: lodash, ramda, lazy.js

Tags: javascriptutilitylibraryarraysobjectsfunctions



Underscore is a widely popular and well-established library in the JavaScript community, with a large number of users and a long history. On the other hand, @mobily/ts-belt is a relatively newer library and may not have the same level of popularity as Underscore.


Underscore is a larger library compared to @mobily/ts-belt. It includes a wide range of utility functions and features, which can result in a larger bundle size. @mobily/ts-belt, being a TypeScript utility library, is more focused and lightweight, providing a smaller footprint.


Both libraries provide utility functions for working with data and collections. Underscore offers a comprehensive set of functions for manipulating arrays, objects, and other data structures. @mobily/ts-belt, specifically designed for TypeScript, provides type-safe utility functions and additional features like pipeable functions and functional programming utilities.

TypeScript Support

While Underscore does have TypeScript typings available, it is primarily designed for JavaScript and may not provide the same level of type safety and TypeScript-specific features as @mobily/ts-belt. @mobily/ts-belt is built with TypeScript in mind and provides strong type support and better integration with TypeScript projects.

Community and Maintenance

Underscore has a large and active community, with ongoing maintenance and updates. It has been widely adopted and has a mature ecosystem. @mobily/ts-belt, being a newer library, may have a smaller community but is actively maintained and has regular updates.