I find it handy to test my website in the iOS Simulator sometimes. Therefor i keep this npm script to make it easier. I use the concurrently package to run multiple commands at once.

    "scripts": {
        "start": "npm run dev",
        "start:withsimulator": "concurrently \"npm run dev\" \"npm run simulator\"",
        "simulator": "xcrun simctl list devices | grep 'iPhone 14' | grep -q Booted || xcrun simctl boot 'iPhone 14' && open -a Simulator && sleep 5 && xcrun simctl openurl booted 'http://localhost:4600/'",
        "dev": "astro dev --open --port 4600",
        "build": "astro build",
        "preview": "astro preview",
        "astro": "astro",
    }

Just an example package.json. I run npm start:withsimulator to launch both the development server and the iOS Simulator.

Summary

• xcrun simctl list devices Lists all available iOS Simulator devices.

• | grep 'iPhone 14' Filters the list to only show entries containing “iPhone 14”.

• | grep -q Booted Quietly checks if an iPhone 14 simulator is already in the “Booted” state (running).

• || xcrun simctl boot 'iPhone 14' If the iPhone 14 simulator is not booted, this boots it.

• && open -a Simulator Opens the Simulator app itself (so you can see it running).

• && sleep 5 Waits 5 seconds to ensure the simulator is fully ready before continuing.

• && xcrun simctl openurl booted 'http://localhost:4600/' Opens the given URL (http://localhost:4600/) inside the booted simulator’s Safari browser.