REPL example for electron

01-runner.js

'use strict'

const net = require('net')
const chalk = require('chalk')
const path = require('path')
const cp  = require('child_process')
const rimraf = require('rimraf')


function getPath() {
  if (process.platform === 'win32') {
    return path.join('\\\\.\\pipe', process.cwd(), 'pipe')
  }

  let ipcPath = path.join(process.cwd(), '.pipe')
  rimraf.sync(ipcPath)
  return ipcPath
}

const ipcPath = getPath()

let command = 'node_modules/.bin/electron'
let args = ['.', '--color']

if (process.platform === 'win32') {
  command = 'cmd'
  args = ['/s', '/c', 'node_modules\\.bin\\electron.cmd . --color']
}

let subprocess = cp.spawn(command, args, {
  stdio: ['ignore', process.stdout, process.stderr],
})

subprocess.on('exit', function () {
  process.exit()
})

function wait() {
  setTimeout(function () {
    let socket = net.connect(ipcPath, function () {
      console.log(chalk.green('REPL terminal enabled, type "help" for more details'))

      let stdin = process.stdin
      stdin.setRawMode(true)
      stdin.setEncoding('utf8')
      stdin.resume()
      stdin.pipe(socket)

      socket.pipe(process.stdout)
    }).on('error', function () {
      console.error(chalk.yellow('Application is not started yet, retrying to connect'))
      wait()
    })
  }, 1000)
}

wait()

02-electron.js

'use strict'

const electron = require('electron')
const app = electron.app
const chalk = require('chalk')
const path = require('path')
const net = require('net')
const stream = require('stream')

let ipcPath = path.join(process.cwd(), '..', '.pipe')
if (process.platform === 'win32') {
  ipcPath = path.join('\\\\.\\pipe', process.cwd(), '..', 'pipe')
}

net.createServer(function (socket) {
  let repl = require('repl').start({
    input: socket,
    output: socket,
    useColors: true,
    terminal: true,
    prompt: chalk.magenta('[')
      + chalk.gray('electron-develop')
      + chalk.magenta(']')
      + chalk.blue('>> ')
  })

  /**
   * Exit when the REPL is closed
   */
  repl.on('exit', function () {
    app.exit(0)
  })

  /**
   * Variables to expose to the REPL interface
   */
  repl.context.electron = electron
  repl.context.app = app
}).listen(ipcPath)