Examine source code of Shimeji Browser Extension

{
  "manifest_version": 2,
  "name": "Shimeji Browser Extension",
  "version": "0.1.14",
  "description": "Import Shimeji ZIP packs into browser pages, activate up to five mascots, and manage shared alarms and reminders.",
  "permissions": [
    "http://*/*",
    "https://*/*",
    "storage",
    "tabs",
    "unlimitedStorage"
  ],
  "icons": {
    "48": "assets/extension/icon.svg",
    "96": "assets/extension/icon.svg"
  },
  "browser_action": {
    "default_title": "Open Shimeji Settings",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "assets/extension/icon.svg"
    }
  },
  "background": {
    "scripts": [
      "pack-utils.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "pack-utils.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "shimeji-browser-extension@local.invalid",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}