How do you set default `CONNECTION` to `tunnel` with Expo?

Question

When running expo ios, the default connection type is LAN. Via app.json, metro.config.js, or .env, how does one configure type tunnel to be the default?

Answer 1

It's been a while since you asked this question so I assume you have already figure out the answer. You need to change the "start" script in package.json to "expo start --tunnel".

  "scripts": {
    "start": "expo start --tunnel",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },

Answer 2

I was having the same issue and I tried to change my scripts to:

{
   "scripts": {
    "start": "expo start --tunnel",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web"
  }
}

But it didn't work. I then had to run the command directly:

npx expo start --tunnel

Then everything worked fine.