Prefix ENV variables with REACT_APP

[peteoleary]

Since React runs in the browser, ENV variables defined on the server need to prefixed with REACT_APP so that React middleware makes them available to the app. Keep in mind that you should never prefix credentials as the values will be visible in the browser

https://create-react-app.dev/docs/adding-custom-environment-variables/

local-luv-proto/frontend/src/libs/magic.ts

Line 6 in 93aead1

rpcUrl: process.env.NETWORK_RPC_URL || "https://rpc-mumbai.matic.today", // TODO: .env config not working!?!?