Examine source code of scraps-clipper

{
  "manifest_version": 2,
  "name": "Scraps",
  "version": "1.0",
  "description": "Right-click to clip text from any page and view your collection in a popup.",
  "browser_specific_settings": {
    "gecko": {
      "id": "asevetkuluna@outlook.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "description": "Scraps collects no data. All clipped text remains on your device in local storage."
      }
    }
  },
  "browser_action": {
    "default_popup": "clipper/panel.html",
    "default_title": "Scraps",
    "default_icon": {
      "16": "icons/scrap-clip-16.png",
      "48": "icons/scrap-clip-48.png",
      "128": "icons/scrap-clip-128.png"
    }
  },
  "background": {
    "scripts": [
      "bin/collector.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "icons/scrap-clip-16.png",
    "48": "icons/scrap-clip-48.png",
    "128": "icons/scrap-clip-128.png"
  },
  "permissions": [
    "contextMenus",
    "storage",
    "clipboardWrite"
  ]
}