# Using PnP JS Core custom objects with @select and @expand decorators ## Summary This webpart demonstrates how to use [PnP JS Core](https://github.com/SharePoint/PnP-JS-Core) Custom Objects with @select and @expand TypeScript decorators. If you are going to use PnP JS Core library and you've plans for [extending it with Custom Business Objects](https://github.com/SharePoint/PnP-JS-Core/wiki/Extending-with-Custom-Business-Objects), then this project will show you some best practices. You can also find more information in the [blog series about working with Custom Business Objects, Parsers and TypeScript Decorators in PnP JS Core](https://blog.josequinto.com/2017/05/19/why-do-we-should-use-custom-business-objects-models-in-pnp-js-core/) ## Used SharePoint Framework Version ![drop](https://img.shields.io/badge/drop-GA-green.svg) ## Applies to * [SharePoint Framework](https://docs.microsoft.com/sharepoint/dev/spfx/sharepoint-framework-overview) * [Office 365 developer tenant](https://docs.microsoft.com/sharepoint/dev/spfx/set-up-your-developer-tenant) ## Solution Solution|Author(s) --------|--------- react-sp-pnp-js-property-decorators | Jose Quinto ([@jquintozamora](https://twitter.com/jquintozamora) , [blog.josequinto.com](https://blog.josequinto.com)) ## Version history Version|Date|Comments -------|----|-------- 1.0|July 2, 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.** --- ## Minimal Path to Awesome - clone this repo - `$ npm i` - `$ gulp trust-dev-cert` - `$ gulp serve ` ### Local Mode A browser in local mode (localhost) will be opened. https://localhost:4321/temp/workbench.html ### SharePoint Mode If you want to try on a real environment, open: https://your-domain.sharepoint.com/_layouts/15/workbench.aspx