Underscore vs Immutable.js

Overview

Underscore

Stacks1.9K

Followers589

Votes290

GitHub Stars27.4K

Forks5.5K

Immutable.js

Stacks578

Followers120

Votes17

Immutable.js vs Underscore: What are the differences?

Developers describe Immutable.js as "Immutable persistent data collections for Javascript which increase efficiency and simplicity, by Facebook". Immutable provides Persistent Immutable List, Stack, Map, OrderedMap, Set, OrderedSet and Record. They are highly efficient on modern JavaScript VMs by using structural sharing via hash maps tries and vector tries as popularized by Clojure and Scala, minimizing the need to copy or cache data. On the other hand, Underscore is detailed as "JavaScript's utility _ belt". A JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects.

Immutable.js and Underscore can be primarily classified as "Javascript Utilities & Libraries" tools.

"Immutable data structures" is the top reason why over 6 developers like Immutable.js, while over 83 developers mention "Utility" as the leading cause for choosing Underscore.

Immutable.js and Underscore are both open source tools. Immutable.js with 27.6K GitHub stars and 1.6K forks on GitHub appears to be more popular than Underscore with 24.6K GitHub stars and 5.41K GitHub forks.

Pinterest, LinkedIn, and Coursera are some of the popular companies that use Underscore, whereas Immutable.js is used by Instagram, Rove.me, and Broadly. Underscore has a broader approval, being mentioned in 1047 company stacks & 76 developers stacks; compared to Immutable.js, which is listed in 20 company stacks and 11 developer stacks.

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Advice on Underscore, Immutable.js

Abigail

Dec 6, 2019

Decided

Fast Healthcare Interoperability Resources (FHIR) provides standard data objects in JSON format for the healthcare industry. Since JSON objects are hierarchical and tree-like, we had a need to defensively 'pluck' fields from our JSON objects and do lots of mapping. We tried jQuery and Underscore and a few other technologies like FHIRPath; but Lodash has been the most well supported, works in the most contexts, has the cleanest syntax, etc. We particularly like the ES6 version of Lodash, where we can import the method names directly, without resorting to * or _ syntax. We got hooked on the 'get' function to defensively pluck fields from objects without crashing our user interface, and have found countless uses for the other lodash functions throughout our apps. Lodash is great for developing and optimizing algorithms.

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Detailed Comparison

Underscore	Immutable.js
A JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects.	Immutable provides Persistent Immutable List, Stack, Map, OrderedMap, Set, OrderedSet and Record. They are highly efficient on modern JavaScript VMs by using structural sharing via hash maps tries and vector tries as popularized by Clojure and Scala, minimizing the need to copy or cache data.
Statistics
GitHub Stars 27.4K	GitHub Stars -
GitHub Forks 5.5K	GitHub Forks -
Stacks 1.9K	Stacks 578
Followers 589	Followers 120
Votes 290	Votes 17
Pros & Cons
Pros 85 Utility 55 Simple 40 Functional programming 32 Fast 28 Open source	Pros 8 Immutable data structures 5 Allows you to mimic functional programming 2 Bring the functional experience to JS 1 Easily transpiles to different ES standards 1 Makes writing Javascript less scary

What are some alternatives to Underscore, Immutable.js?

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Ramda

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Luxon

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Prepack

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Factor

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