Unable to determine application name or Electron version

Getting the error Unable to determine application name or Electron version when running: electron-packager . --all

My package.json looks like so:

{
  "name": "app",
  "productName": "app",
  "version": "0.0.1",
  "description": "Hangouts as an application",
  "main": "main.js",
  "scripts": {
    "start": "electron ."
  },
  "author": "Allen Hendricks",
  "license": "ISC",
  "devDependencies": {
    "electron": "^1.4.1"
  },
  "dependencies": {}
}

I am 100% for sure in the root directory of my app for running the command line.

[malept]

@transfluxus You need to run npm install --save-dev electron so that Electron Packager can infer the version from package.json.

[malept]

@voltrevo

Alternatively, is there a way to specify the electron version as the error message suggests?

Running electron-packager . --electron-version=1.4.15 when electron is not in package.json works for me.