Examine source code of dLcompare companion

{
  "version": "0.5.2",
  "homepage_url": "https://www.dlcompare.com/",
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "browser_action": {
    "default_icon": {
      "48": "images/launcher-icon-1x.png",
      "96": "images/launcher-icon-2x.png",
      "192": "images/launcher-icon-4x.png",
      "512": "images/launcher-icon-8x.png"
    },
    "default_popup": "popup/popup.html"
  },
  "icons": {
    "48": "images/launcher-icon-1x.png",
    "96": "images/launcher-icon-2x.png",
    "192": "images/launcher-icon-4x.png",
    "512": "images/launcher-icon-8x.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "sw.js"
    ]
  },
  "content_scripts": [
    {
      "css": [
        "content/styles.css"
      ],
      "js": [
        "parameters.js",
        "vendor/jquery.js",
        "vendor/jquery-ui.js",
        "content/shop.js",
        "website/amazon.js",
        "website/baidu.js",
        "website/dlcompare.js",
        "website/g2a.js",
        "website/gamekult.js",
        "website/gamespot.js",
        "website/google.js",
        "website/hrk.js",
        "website/jeuxvideo.js",
        "website/origin.js",
        "website/qwant.js",
        "website/steam.js",
        "website/twitch.js",
        "website/yandex.js",
        "website/youtube.js",
        "website/other.js",
        "content/main.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "permissions": [
    "<all_urls>",
    "activeTab",
    "storage",
    "tabs"
  ],
  "web_accessible_resources": [
    "images/*.png",
    "content/*.css"
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@dlcompare.com",
      "strict_min_version": "58.0"
    }
  }
}