app.js

const electron = require('electron')
const app = electron.app
const BrowserWindow = electron.BrowserWindow

let url
if (process.env.NODE_ENV === 'DEV') {
  url = 'http://localhost:8080/'
} else {
  url = `file://${process.cwd()}/dist/index.html`
}

app.on('ready', () => {
  let window = new BrowserWindow({width: 800, height: 600})
  window.loadURL(url)
})

build.sh

npm run build
electron app.js

package.json

{ "scripts": 
  { "dev": "NODE_ENV=DEV vue-cli-service serve & sleep 5 && NODE_ENV=DEV electron app.js" }
}

step-1.sh

npm install -g @vue/cli
vue create my-project
cd my-project
npm install electron

vue.config.js

module.exports = {
  configureWebpack: config => {
    if (process.env.NODE_ENV === 'production') {
      config.output.publicPath = `${process.cwd()}/dist/`
    }
  }
}