Injecting our MetaMask fork into an Electron dapp

metamask-init.js

const injectMetaMask = async () => {
  const contentScriptReq = await fetch('metamask://app/scripts/contentscript.js')
  const blob = await contentScriptReq.blob()
  const s = document.createElement('script')
  s.type = 'text/javascript'
  s.src = URL.createObjectURL(blob)
  document.getElementsByTagName('head')[0].appendChild(s)
  return true
}

const loadMetaMask = async () => {
  await injectMetaMask()
  console.log('MetaMask: Injected')
  await metaMaskIframeLoaded()
  window._setupMetaMaskPageStream(document.getElementById('metaMaskIframe'))
}