browser-milje/manifest.json

{
    "manifest_version": 3,
    "name": "browser-milje",
    "description": "adds a milje table cloth on top of your browser viewport",
    "version": "0.0.2",
    "permissions": ["storage", "activeTab", "scripting"],
    "action": {
        "default_popup": "popup.html",
        "default_icon": "assets/browser-milje.png"
    },
    "background": {
        "service_worker": "background.js"
    },
    "icons": {
        "16": "assets/icon-16.png",
        "32": "assets/icon-32.png",
        "48": "assets/icon-64.png",
        "128": "assets/icon-128.png"
    },
    "content_scripts": [
        {
            "matches": ["<all_urls>", "file:///"],
            "js": ["scripts/milje.js", "scripts/contentScript.js"]
        }
    ],
    "browser_specific_settings": {
        "gecko": {  
            "id": ""
        }
    }
}