To keep the size of the git-repo small the node-modules folder is not included. After runninng
npm install
you need to edit the webpack.config.js file in react-scripts/config/ to get
worker-plugin running.
Add the import
const WorkerPlugin = require("worker-plugin");
and in the plugin array:
plugins: [
// Generates an `index.html` file with the <script> injected.
new WorkerPlugin(),
...