Examine source code of iMenu

{
    "manifest_version": 2,
    "name": "iMenu",
    "version": "0.0.7",
    "description": "Set Your Context Menu",

    "icons": {
        "48": "icons/imenu-48.png",
        "96": "icons/imenu-96.png"
    },

    "background": {
        "scripts": ["utils.js", "actions.js", "background.js"]
    },
    
    "browser_action": {
        "default_title": "iMenu Options"
    },

    // "sidebar_action":{
    //     "default_title":"a",
    //     "default_panel":"a.html",
    //     "open_at_install":false
    // },

    "options_ui": {
        "page": "options/options.html",
        "open_in_tab": true
    },

    "permissions": [
        "storage",
        "contextMenus"
    ]
}