text: import { protocol } from 'electron'
  import * as path from 'path'
  import { readFile } from 'fs'
  import { URL } from 'url'
  
  export default scheme => {
    protocol.registerBufferProtocol(
      scheme,
      (request, respond) => {
        let pathName = new URL(request.url).pathname
        pathName = decodeURI(pathName) // Needed in case URL contains spaces
  
        readFile(path.join(__dirname, pathName), (error, data) => {
          if (error) {
            console.error(`Failed to read ${pathName} on ${scheme} protocol`, error)
          }
          let extension = path.extname(pathName).toLowerCase()
          let mimeType = ''
  
          if (extension === '.js') {
            mimeType = 'text/javascript'
          } else if (extension === '.html') {
            mimeType = 'text/html'
          } else if (extension === '.css') {
            mimeType = 'text/css'
          } else if (extension === '.svg' || extension === '.svgz') {
            mimeType = 'image/svg+xml'
          } else if (extension === '.json') {
            mimeType = 'application/json'
          }
  
          respond({ mimeType, data })
        })
      },
      error => {
        if (error) {
          console.error(`Failed to register ${scheme} protocol`, error)
        }
      }
    )
  }
  