manifest.json

{
    "manifest_version": 3,
    "name": "__MSG_name__",
    "short_name": "__MSG_shortName__",
    "version": "1.2",

    "description": "__MSG_description__",

    "default_locale": "en",

    "icons": {
    	"16": "icons/icon16.png",
    	"32": "icons/icon32.png",
    	"48": "icons/icon48.png",
        "64": "icons/icon64.png",
        "128": "icons/icon128.png"
    },

    "permissions": [
        "storage"
    ],

    "optional_permissions": [
        "downloads"
    ],

    "action": {
        "default_title": "Annotations Restored",
        "default_popup": "popup/index.html"
    },

    "content_scripts": [{
        "matches": ["*://www.youtube.com/*"],
        "js": [
            "js/annotationlib/dist/AnnotationParser.js", 
            "js/annotationlib/dist/AnnotationRenderer.js", 

            "js/content.js"
        ],
        "css": ["js/annotationlib/dist/AnnotationRenderer.css"]
    }],
    "background": {
        "service_worker": "js/background.js"
    }
}