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


v3.13.1(about 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


v8.5.0(1 day ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 0Monthly npm downloads

Rambda is a lightweight and functional utility library for JavaScript and TypeScript. It provides a set of functions that are designed to be simple, performant, and compatible with tree-shaking, making it ideal for modern JavaScript applications.

Alternatives: lodash, underscore, immer

Tags: javascriptutilityfunctional-programmingimmutabletree-shaking



Rambda has gained a solid reputation and a growing community of users. It has become a popular choice among functional programming enthusiasts in recent years. On the other hand, @mobily/ts-belt is a relatively newer package and may not have the same level of popularity and adoption as Rambda.


Rambda is designed to be a lightweight functional programming library, and it strives to keep the package size as small as possible. On the other hand, @mobily/ts-belt is a comprehensive utility library for TypeScript, which may result in a larger package size compared to Rambda.


Both packages provide various utility functions, but their focus and approach differ. Rambda provides a functional programming toolkit with a functional-first approach, offering a wide range of functions for working with lists, objects, and more. @mobily/ts-belt, on the other hand, is a utility library specifically designed for TypeScript, providing a collection of utility functions and TypeScript type helpers.

TypeScript Support

While Rambda includes TypeScript typings, @mobily/ts-belt is specifically built for TypeScript and offers extensive type support and type-safe utilities. It provides additional benefits for TypeScript developers, such as improved autocomplete and type checking.

Developer Experience

Rambda has concise and intuitive function names, which can be beneficial for developers who prefer a functional programming style. @mobily/ts-belt includes a comprehensive set of utility functions, including common JavaScript functions with enhanced TypeScript support. The choice between them depends on the specific preferences and requirements of the project.


Both packages are actively maintained, but it's worth noting that Rambda has a larger user base and a more established presence, which may indicate better community support and ongoing maintenance. However, the level of maintainability can vary over time, so it's essential to consider the recent activity and responsiveness of the package maintainers.