How to handle "mutable state" in a pure functional way

• mori

  5 3,388 0.0 Clojure

  ClojureScript's persistent data structures and supporting API from the comfort of vanilla JavaScript

Use persistent immutable data structures (as implemented in, for instance, mori or Immutable.js) to represent the state. As much as possible, push calculations into referentially transparent functions (i.e., input depends purely on output) which take persistent data. Write the interactions with the real world in imperative style.

• immutable-js

  38 32,853 7.0 TypeScript

  Immutable persistent data collections for Javascript which increase efficiency and simplicity.

  

Use persistent immutable data structures (as implemented in, for instance, mori or Immutable.js) to represent the state. As much as possible, push calculations into referentially transparent functions (i.e., input depends purely on output) which take persistent data. Write the interactions with the real world in imperative style.

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• sum-types

  8 42 5.9 TypeScript

  Safe, ergonomic, non-generic sum types in TypeScript.

  

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