sp-dev-fx-webparts/samples/react-redux-async-immutablejs

page_type	products	languages	extensions
sample	office-sp	javascript typescript	contentType technologies platforms createdDate samples SharePoint Framework react 8/1/2017 12:00:00 AM

SharePoint Framework web part sample using React, Redux and ImmutableJS

Summary

SharePoint Framework web part which uses Redux to maintain a single state for the entire application and ImmutableJS to create performant state trees.

Redux AJAX actions are used together with the SharePoint REST API to display lists in your site. You can also add a new list to the site from this webpart.

More details in my post here: Using Redux Async Actions and ImmutableJS in SharePoint Framework

Used SharePoint Framework Version

Applies to

• SharePoint Framework
• Office 365 tenant

Solution

Solution	Author(s)
React-Redux-RESTAPI	Vardhaman Deshpande @vrdmn

Version history

Version	Date	Comments
1.0	July 11, 2017	Initial release

Disclaimer

THIS CODE IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.

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Minimal Path to Awesome

• Clone this repository
• in the command line run:
  • npm install
  • gulp serve
  • Open the SharePoint Online version of the workbench: /_layouts/15/workbench.aspx

Why Redux and ImmutableJS

Every Redux action creates a copy of the state, changes the required properties in the copy and then returns the copy as a new state. This prevents bugs where the state is changed unknowingly.

On the other hand, this can also be performance intensive as for changing only a single element, we have to copy the entire state tree in memory. Fortunately, ImmutableJS comes to the rescue here.

Using ImmutableJS, we can create new state trees in memory without duplicating the elements which are unchanged. When you create a new state object using ImmutableJS, the new object still points to the previous memory locations of unchanged elements. Only the properties which are changed are allocated new memory locations.