react-dropzone with progress bar

Based on https://stackoverflow.com/questions/40476405/material-ui-linearprogress-bar-not-working.

Install

Install node and yarn. Then:

yarn

Server

node server.js

Client

npx webpack --display-error-details
npx http-server

Open http://localhost:8080 in the browser.

To see progress locally, cap network speed to Fast3G in Chrome/Firefox DevTools.