Using OpenLayers 6 with React Functional Components and Hooks

Here is a sample application that demonstrates how to integrate OpenLayers with React Functional Components including:

• creating a wrapper component (MapWrapper.js)
• using hooks to initialize the map and add features from props
• get/set component state from within an OpenLayers event handler using refs
• Fetch and parse GeoJSON features from a mock API (done inside App.js)

Install

Install the dependencies with the following command:

npm install

Launch with Development Server

To run a development build and launch the development server, execute:

npm start

Once completed, the app should be avialable from http://localhost:3000/

Development Environment

This application was developed using create-react-app, with Node version v12.16.1