Examine source code of Containers with Transitions

{
  "manifest_version": 2,
  "name": "Containers with Transitions",
  "version": "1.0.6",
  "description": "Containers with Transitions is a fork of Multi-Account Containers that provides transition rules, which let you choose the container to open a page based on the container it was opened from. It also adds other improvements aiming to minimise papercuts and unwanted prompts.",
  "icons": {
    "48": "img/container-site-d-48.png",
    "96": "img/container-site-d-96.png"
  },
  "applications": {
    "gecko": {
      "id": "@containers-with-transitions",
      "strict_min_version": "57.0"
    }
  },
  "homepage_url": "https://github.com/blackhole89/multi-account-containers#readme",
  "permissions": [
    "<all_urls>",
    "activeTab",
    "cookies",
    "contextMenus",
    "contextualIdentities",
    "history",
    "idle",
    "management",
    "storage",
    "tabs",
    "webRequestBlocking",
    "webRequest"
  ],
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Period",
        "mac": "MacCtrl+Period"
      },
      "description": "Open containers panel"
    }
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "img/container-site.svg",
    "default_title": "Containers with Transitions",
    "default_popup": "popup.html"
  },
  "background": {
    "page": "js/background/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content-script.js"
      ],
      "css": [
        "css/content.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "/img/container-site-d-24.png"
  ]
}