electron/npm/index.js

var fs = require('fs')
var path = require('path')

var pathFile = path.join(__dirname, 'path.txt')

function getElectronPath () {
  if (fs.existsSync(pathFile)) {
    var executablePath = fs.readFileSync(pathFile, 'utf-8')
    if (process.env.ELECTRON_OVERRIDE_DIST_PATH) {
      return path.join(process.env.ELECTRON_OVERRIDE_DIST_PATH, executablePath)
    }
    return path.join(__dirname, 'dist', executablePath)
  } else {
    throw new Error('Electron failed to install correctly, please delete node_modules/electron and try installing again')
  }
}

module.exports = getElectronPath()