Examine source code of JSLibCache

{
  "manifest_version": 2,
  "name": "JSLibCache",
  "version": "0.0.21",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "jslibcache@pass.dog"
    }
  },
  "description": "__MSG_description__",
  "icons": {
    "128": "icon256.png"
  },
  "permissions": [
    "*://*/*",
    "storage",
    "activeTab",
    "unlimitedStorage",
    "webRequest",
    "webRequestBlocking",
    "webNavigation"
  ],
  "background": {
    "scripts": [
      "utils.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "browser_style": false,
    "theme_icons": [
      {
        "dark": "icon256.png",
        "light": "icon256white.png",
        "size": 128
      }
    ]
  },
  "web_accessible_resources": [
    "resources/*"
  ]
}